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libvirt/src/qemu/qemu_capabilities.c
Yi Li 7dfa87aed3 virQEMUCapsInitQMPArch: Refactor cleanup 
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Signed-off-by: Yi Li <yili@winhong.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2021-03-10 19:57:49 +01:00

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/*
* qemu_capabilities.c: QEMU capabilities generation
*
* Copyright (C) 2006-2016 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "qemu_capabilities.h"
#include "viralloc.h"
#include "virarch.h"
#include "vircrypto.h"
#include "virlog.h"
#include "virerror.h"
#include "virfile.h"
#include "virfilecache.h"
#include "virpidfile.h"
#include "virprocess.h"
#include "cpu/cpu.h"
#include "cpu/cpu_x86.h"
#include "domain_conf.h"
#include "vircommand.h"
#include "virbitmap.h"
#include "virnodesuspend.h"
#include "virnuma.h"
#include "virhostcpu.h"
#include "qemu_monitor.h"
#include "virstring.h"
#include "qemu_hostdev.h"
#include "qemu_domain.h"
#define LIBVIRT_QEMU_CAPSPRIV_H_ALLOW
#include "qemu_capspriv.h"
#include "qemu_qapi.h"
#include "qemu_process.h"
#include "qemu_firmware.h"
#include "virutil.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdarg.h>
#include <sys/utsname.h>
#define VIR_FROM_THIS VIR_FROM_QEMU
VIR_LOG_INIT("qemu.qemu_capabilities");
/* While not public, these strings must not change. They
* are used in domain status files which are read on
* daemon restarts
*/
VIR_ENUM_IMPL(virQEMUCaps,
QEMU_CAPS_LAST, /* virQEMUCaps grouping marker */
/* 0 */
"vnc-colon",
"no-reboot",
"drive",
"drive-boot",
"name",
/* 5 */
"uuid",
"domid",
"vnet-hdr",
"migrate-kvm-stdio",
"migrate-qemu-tcp",
/* 10 */
"migrate-qemu-exec",
"drive-cache-v2",
"kvm",
"drive-format",
"vga",
/* 15 */
"0.10",
"pci-device",
"mem-path",
"drive-serial",
"xen-domid",
/* 20 */
"migrate-qemu-unix",
"chardev",
"enable-kvm",
"monitor-json",
"balloon",
/* 25 */
"device",
"sdl",
"smp-topology",
"netdev",
"rtc",
/* 30 */
"vhost-net",
"rtc-td-hack",
"no-hpet",
"no-kvm-pit",
"tdf",
/* 35 */
"pci-configfd",
"nodefconfig",
"boot-menu",
"fsdev",
"nesting",
/* 40 */
"name-process",
"drive-readonly",
"smbios-type",
"vga-qxl",
"spice",
/* 45 */
"vga-none",
"migrate-qemu-fd",
"boot-index",
"hda-duplex",
"drive-aio",
/* 50 */
"pci-multibus",
"pci-bootindex",
"ccid-emulated",
"ccid-passthru",
"chardev-spicevmc",
/* 55 */
"device-spicevmc",
"virtio-tx-alg",
"device-qxl-vga",
"pci-multifunction",
"virtio-blk-pci.ioeventfd",
/* 60 */
"sga",
"virtio-blk-pci.event_idx",
"virtio-net-pci.event_idx",
"cache-directsync",
"piix3-usb-uhci",
/* 65 */
"piix4-usb-uhci",
"usb-ehci",
"ich9-usb-ehci1",
"vt82c686b-usb-uhci",
"pci-ohci",
/* 70 */
"usb-redir",
"usb-hub",
"no-shutdown",
"cache-unsafe",
"rombar",
/* 75 */
"ich9-ahci",
"no-acpi",
"fsdev-readonly",
"virtio-blk-pci.scsi",
"blk-sg-io",
/* 80 */
"drive-copy-on-read",
"cpu-host",
"fsdev-writeout",
"drive-iotune",
"system_wakeup",
/* 85 */
"scsi-disk.channel",
"scsi-block",
"transaction",
"block-job-sync",
"block-job-async",
/* 90 */
"scsi-cd",
"ide-cd",
"no-user-config",
"hda-micro",
"dump-guest-memory",
/* 95 */
"nec-usb-xhci",
"virtio-s390",
"balloon-event",
"bridge",
"lsi",
/* 100 */
"virtio-scsi-pci",
"blockio",
"disable-s3",
"disable-s4",
"usb-redir.filter",
/* 105 */
"ide-drive.wwn",
"scsi-disk.wwn",
"seccomp-sandbox",
"reboot-timeout",
"dump-guest-core",
/* 110 */
"seamless-migration",
"block-commit",
"vnc",
"drive-mirror",
"usb-redir.bootindex",
/* 115 */
"usb-host.bootindex",
"blockdev-snapshot-sync",
"qxl",
"VGA",
"cirrus-vga",
/* 120 */
"vmware-svga",
"device-video-primary",
"s390-sclp",
"usb-serial",
"usb-net",
/* 125 */
"add-fd",
"nbd-server",
"virtio-rng",
"rng-random",
"rng-egd",
/* 130 */
"virtio-ccw",
"dtb",
"megasas",
"ipv6-migration",
"machine-opt",
/* 135 */
"machine-usb-opt",
"tpm-passthrough",
"tpm-tis",
"nvram",
"pci-bridge",
/* 140 */
"vfio-pci",
"vfio-pci.bootindex",
"scsi-generic",
"scsi-generic.bootindex",
"mem-merge",
/* 145 */
"vnc-websocket",
"drive-discard",
"mlock",
"vnc-share-policy",
"device-del-event",
/* 150 */
"dmi-to-pci-bridge",
"i440fx-pci-hole64-size",
"q35-pci-hole64-size",
"usb-storage",
"usb-storage.removable",
/* 155 */
"virtio-mmio",
"ich9-intel-hda",
"kvm-pit-lost-tick-policy",
"boot-strict",
"pvpanic",
/* 160 */
"enable-fips",
"spice-file-xfer-disable",
"spiceport",
"usb-kbd",
"host-pci-multidomain",
/* 165 */
"msg-timestamp",
"active-commit",
"change-backing-file",
"memory-backend-ram",
"numa",
/* 170 */
"memory-backend-file",
"usb-audio",
"rtc-reset-reinjection",
"splash-timeout",
"iothread",
/* 175 */
"migrate-rdma",
"ivshmem",
"drive-iotune-max",
"VGA.vgamem_mb",
"vmware-svga.vgamem_mb",
/* 180 */
"qxl.vgamem_mb",
"qxl-vga.vgamem_mb",
"pc-dimm",
"machine-vmport-opt",
"aes-key-wrap",
/* 185 */
"dea-key-wrap",
"pci-serial",
"aarch64-off",
"vhost-user-multiqueue",
"migration-event",
/* 190 */
"gpex-pcihost",
"ioh3420",
"x3130-upstream",
"xio3130-downstream",
"rtl8139",
/* 195 */
"e1000",
"virtio-net",
"gic-version",
"incoming-defer",
"virtio-gpu",
/* 200 */
"virtio-gpu.virgl",
"virtio-keyboard",
"virtio-mouse",
"virtio-tablet",
"virtio-input-host",
/* 205 */
"chardev-file-append",
"ich9-disable-s3",
"ich9-disable-s4",
"vserport-change-event",
"virtio-balloon-pci.deflate-on-oom",
/* 210 */
"mptsas1068",
"spice-gl",
"qxl.vram64_size_mb",
"qxl-vga.vram64_size_mb",
"chardev-logfile",
/* 215 */
"debug-threads",
"secret",
"pxb",
"pxb-pcie",
"device-tray-moved-event",
/* 220 */
"nec-usb-xhci-ports",
"virtio-scsi-pci.iothread",
"name-guest",
"qxl.max_outputs",
"qxl-vga.max_outputs",
/* 225 */
"spice-unix",
"drive-detect-zeroes",
"tls-creds-x509",
"display",
"intel-iommu",
/* 230 */
"smm",
"virtio-pci-disable-legacy",
"query-hotpluggable-cpus",
"virtio-net.rx_queue_size",
"machine-iommu",
/* 235 */
"virtio-vga",
"drive-iotune-max-length",
"ivshmem-plain",
"ivshmem-doorbell",
"query-qmp-schema",
/* 240 */
"gluster.debug_level",
"vhost-scsi",
"drive-iotune-group",
"query-cpu-model-expansion",
"virtio-net.host_mtu",
/* 245 */
"spice-rendernode",
"nvdimm",
"pcie-root-port",
"query-cpu-definitions",
"block-write-threshold",
/* 250 */
"query-named-block-nodes",
"cpu-cache",
"qemu-xhci",
"kernel-irqchip",
"kernel-irqchip.split",
/* 255 */
"intel-iommu.intremap",
"intel-iommu.caching-mode",
"intel-iommu.eim",
"intel-iommu.device-iotlb",
"virtio.iommu_platform",
/* 260 */
"virtio.ats",
"loadparm",
"spapr-pci-host-bridge",
"spapr-pci-host-bridge.numa_node",
"vnc-multi-servers",
/* 265 */
"virtio-net.tx_queue_size",
"chardev-reconnect",
"virtio-gpu.max_outputs",
"vxhs",
"virtio-blk.num-queues",
/* 270 */
"machine.pseries.resize-hpt",
"vmcoreinfo",
"spapr-vty",
"sclplmconsole",
"numa.dist",
/* 275 */
"disk-share-rw",
"iscsi.password-secret",
"isa-serial",
"pl011",
"machine.pseries.max-cpu-compat",
/* 280 */
"dump-completed",
"virtio-gpu-ccw",
"virtio-keyboard-ccw",
"virtio-mouse-ccw",
"virtio-tablet-ccw",
/* 285 */
"qcow2-luks",
"pcie-pci-bridge",
"seccomp-blacklist",
"query-cpus-fast",
"disk-write-cache",
/* 290 */
"nbd-tls",
"tpm-crb",
"pr-manager-helper",
"qom-list-properties",
"memory-backend-file.discard-data",
/* 295 */
"virtual-css-bridge",
"virtual-css-bridge.cssid-unrestricted",
"vfio-ccw",
"sdl-gl",
"screendump_device",
/* 300 */
"hda-output",
"blockdev-del",
"vmgenid",
"vhost-vsock",
"chardev-fd-pass",
/* 305 */
"tpm-emulator",
"mch",
"mch.extended-tseg-mbytes",
"sev-guest",
"machine.pseries.cap-hpt-max-page-size",
/* 310 */
"machine.pseries.cap-htm",
"usb-storage.werror",
"egl-headless",
"vfio-pci.display",
"blockdev",
/* 315 */
"vfio-ap",
"zpci",
"memory-backend-memfd",
"memory-backend-memfd.hugetlb",
"iothread.poll-max-ns",
/* 320 */
"machine.pseries.cap-nested-hv",
"egl-headless.rendernode",
"memory-backend-file.align",
"memory-backend-file.pmem",
"nvdimm.unarmed",
/* 325 */
"scsi-disk.device_id",
"virtio-pci-non-transitional",
"overcommit",
"query-current-machine",
"machine.virt.iommu",
/* 330 */
"bitmap-merge",
"nbd-bitmap",
"x86-max-cpu",
"cpu-unavailable-features",
"canonical-cpu-features",
/* 335 */
"bochs-display",
"migration-file-drop-cache",
"dbus-vmstate",
"vhost-user-gpu",
"vhost-user-vga",
/* 340 */
"incremental-backup",
"query-cpu-model-baseline",
"query-cpu-model-comparison",
"ramfb",
"machine.pseries.cap-ccf-assist",
/* 345 */
"arm-max-cpu",
"blockdev-file-dynamic-auto-read-only",
"savevm-monitor-nodes",
"drive-nvme",
"smp-dies",
/* 350 */
"i8042",
"rng-builtin",
"virtio-net.failover",
"tpm-spapr",
"cpu.kvm-no-adjvtime",
/* 355 */
"vhost-user-fs",
"query-named-block-nodes.flat",
"blockdev-snapshot.allow-write-only-overlay",
"blockdev-reopen",
"storage.werror",
/* 360 */
"fsdev.multidevs",
"virtio.packed",
"pcie-root-port.hotplug",
"aio.io_uring",
"machine.pseries.cap-cfpc",
/* 365 */
"machine.pseries.cap-sbbc",
"machine.pseries.cap-ibs",
"tcg",
"virtio-blk-pci.scsi.default.disabled",
"pvscsi",
/* 370 */
"cpu.migratable",
"query-cpu-model-expansion.migratable",
"fw_cfg",
"migration-param.bandwidth",
"migration-param.downtime",
/* 375 */
"migration-param.xbzrle-cache-size",
"intel-iommu.aw-bits",
"spapr-tpm-proxy",
"numa.hmat",
"blockdev-hostdev-scsi",
/* 380 */
"usb-host.hostdevice",
"virtio-balloon.free-page-reporting",
"block-export-add",
"netdev.vhost-vdpa",
"fsdev.createmode",
/* 385 */
"ncr53c90",
"dc390",
"am53c974",
"virtio-pmem-pci",
"vhost-user-fs.bootindex",
/* 390 */
"vhost-user-blk",
"cpu-max",
"memory-backend-file.x-use-canonical-path-for-ramblock-id",
"vnc-opts",
"migration-param.block-bitmap-mapping",
/* 395 */
"vnc-power-control",
"audiodev",
);
typedef struct _virQEMUCapsMachineType virQEMUCapsMachineType;
typedef virQEMUCapsMachineType *virQEMUCapsMachineTypePtr;
struct _virQEMUCapsMachineType {
char *name;
char *alias;
unsigned int maxCpus;
bool hotplugCpus;
bool qemuDefault;
char *defaultCPU;
bool numaMemSupported;
char *defaultRAMid;
bool deprecated;
};
typedef struct _virQEMUCapsHostCPUData virQEMUCapsHostCPUData;
typedef virQEMUCapsHostCPUData *virQEMUCapsHostCPUDataPtr;
struct _virQEMUCapsHostCPUData {
/* Only the "info" part is stored in the capabilities cache, the rest is
* re-computed from other fields and external data sources every time we
* probe QEMU or load the cache.
*/
qemuMonitorCPUModelInfoPtr info;
/* Host CPU definition reported in domain capabilities. */
virCPUDefPtr reported;
/* Migratable host CPU definition used for updating guest CPU. */
virCPUDefPtr migratable;
/* CPU definition with features detected by libvirt using virCPUGetHost
* combined with features reported by QEMU. This is used for backward
* compatible comparison between a guest CPU and a host CPU. */
virCPUDefPtr full;
};
typedef struct _virQEMUCapsAccel virQEMUCapsAccel;
typedef virQEMUCapsAccel *virQEMUCapsAccelPtr;
struct _virQEMUCapsAccel {
size_t nmachineTypes;
virQEMUCapsMachineTypePtr machineTypes;
virQEMUCapsHostCPUData hostCPU;
qemuMonitorCPUDefsPtr cpuModels;
};
/*
* Update the XML parser/formatter when adding more
* information to this struct so that it gets cached
* correctly. It does not have to be ABI-stable, as
* the cache will be discarded & repopulated if the
* timestamp on the libvirtd binary changes.
*
* And don't forget to update virQEMUCapsNewCopy.
*/
struct _virQEMUCaps {
virObject parent;
bool kvmSupportsNesting;
bool kvmSupportsSecureGuest;
char *binary;
time_t ctime;
time_t libvirtCtime;
time_t modDirMtime;
bool invalidation;
virBitmapPtr flags;
unsigned int version;
unsigned int kvmVersion;
unsigned int libvirtVersion;
unsigned int microcodeVersion;
char *hostCPUSignature;
char *package;
char *kernelVersion;
virArch arch;
size_t ngicCapabilities;
virGICCapability *gicCapabilities;
virSEVCapability *sevCapabilities;
/* Capabilities which may differ depending on the accelerator. */
virQEMUCapsAccel kvm;
virQEMUCapsAccel tcg;
};
struct virQEMUCapsSearchData {
virArch arch;
const char *binaryFilter;
};
static virClassPtr virQEMUCapsClass;
static void virQEMUCapsDispose(void *obj);
static int virQEMUCapsOnceInit(void)
{
if (!VIR_CLASS_NEW(virQEMUCaps, virClassForObject()))
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(virQEMUCaps);
virArch virQEMUCapsArchFromString(const char *arch)
{
if (STREQ(arch, "i386"))
return VIR_ARCH_I686;
if (STREQ(arch, "arm"))
return VIR_ARCH_ARMV7L;
if (STREQ(arch, "or32"))
return VIR_ARCH_OR32;
return virArchFromString(arch);
}
const char *virQEMUCapsArchToString(virArch arch)
{
if (arch == VIR_ARCH_I686)
return "i386";
else if (arch == VIR_ARCH_ARMV6L || arch == VIR_ARCH_ARMV7L)
return "arm";
else if (arch == VIR_ARCH_OR32)
return "or32";
return virArchToString(arch);
}
/* Checks whether a domain with @guest arch can run natively on @host.
*/
bool
virQEMUCapsGuestIsNative(virArch host,
virArch guest)
{
/* host & guest arches match */
if (host == guest)
return true;
/* hostarch is x86_64 and guest arch is i686 (needs -cpu qemu32) */
if (host == VIR_ARCH_X86_64 && guest == VIR_ARCH_I686)
return true;
/* hostarch is aarch64 and guest arch is armv7l (needs -cpu aarch64=off) */
if (host == VIR_ARCH_AARCH64 && guest == VIR_ARCH_ARMV7L)
return true;
/* hostarch and guestarch are both ppc64 */
if (ARCH_IS_PPC64(host) && ARCH_IS_PPC64(guest))
return true;
return false;
}
/* Given a host and guest architectures, find a suitable QEMU target.
*
* This is meant to be used as a second attempt if qemu-system-$guestarch
* can't be found, eg. on a x86_64 host you want to use qemu-system-i386,
* if available, instead of qemu-system-x86_64 to run i686 guests */
static virArch
virQEMUCapsFindTarget(virArch hostarch,
virArch guestarch)
{
if (virQEMUCapsGuestIsNative(hostarch, guestarch))
guestarch = hostarch;
/* Both ppc64 and ppc64le guests can use the ppc64 target */
if (ARCH_IS_PPC64(guestarch))
guestarch = VIR_ARCH_PPC64;
return guestarch;
}
static virQEMUCapsAccelPtr
virQEMUCapsGetAccel(virQEMUCapsPtr qemuCaps,
virDomainVirtType type)
{
if (type == VIR_DOMAIN_VIRT_KVM)
return &qemuCaps->kvm;
return &qemuCaps->tcg;
}
static void
virQEMUCapsSetDefaultMachine(virQEMUCapsAccelPtr caps,
size_t defIdx)
{
virQEMUCapsMachineType tmp = caps->machineTypes[defIdx];
memmove(caps->machineTypes + 1,
caps->machineTypes,
sizeof(caps->machineTypes[0]) * defIdx);
caps->machineTypes[0] = tmp;
}
static char *
virQEMUCapsFindBinary(const char *format,
const char *archstr)
{
char *ret = NULL;
char *binary = NULL;
binary = g_strdup_printf(format, archstr);
ret = virFindFileInPath(binary);
VIR_FREE(binary);
return ret;
}
static char *
virQEMUCapsFindBinaryForArch(virArch hostarch,
virArch guestarch)
{
char *ret = NULL;
const char *archstr;
virArch target;
/* armv7l guests can only take advantage of KVM on aarch64 hosts by
* using the qemu-system-aarch64 binary, so look for that one first
* to avoid using qemu-system-arm (and thus TCG) instead */
if (hostarch == VIR_ARCH_AARCH64 && guestarch == VIR_ARCH_ARMV7L) {
archstr = virQEMUCapsArchToString(hostarch);
if ((ret = virQEMUCapsFindBinary("qemu-system-%s", archstr)) != NULL)
return ret;
}
/* First attempt: try the guest architecture as it is */
archstr = virQEMUCapsArchToString(guestarch);
if ((ret = virQEMUCapsFindBinary("qemu-system-%s", archstr)) != NULL)
return ret;
/* Second attempt: try looking up by target instead */
target = virQEMUCapsFindTarget(hostarch, guestarch);
if (target != guestarch) {
archstr = virQEMUCapsArchToString(target);
if ((ret = virQEMUCapsFindBinary("qemu-system-%s", archstr)) != NULL)
return ret;
}
return ret;
}
char *
virQEMUCapsGetDefaultEmulator(virArch hostarch,
virArch guestarch)
{
char *binary = NULL;
/* Check for existence of base emulator, or alternate base
* which can be used with magic cpu choice
*/
binary = virQEMUCapsFindBinaryForArch(hostarch, guestarch);
/* RHEL doesn't follow the usual naming for QEMU binaries and ships
* a single binary named qemu-kvm outside of $PATH instead */
if (virQEMUCapsGuestIsNative(hostarch, guestarch) && !binary)
binary = g_strdup("/usr/libexec/qemu-kvm");
return binary;
}
static int
virQEMUCapsInitGuest(virCapsPtr caps,
virFileCachePtr cache,
virArch hostarch,
virArch guestarch)
{
char *binary = NULL;
virQEMUCapsPtr qemuCaps = NULL;
int ret = -1;
binary = virQEMUCapsGetDefaultEmulator(hostarch, guestarch);
/* Ignore binary if extracting version info fails */
if (binary) {
if (!(qemuCaps = virQEMUCapsCacheLookup(cache, binary))) {
virResetLastError();
VIR_FREE(binary);
}
}
ret = virQEMUCapsInitGuestFromBinary(caps,
binary, qemuCaps,
guestarch);
VIR_FREE(binary);
virObjectUnref(qemuCaps);
return ret;
}
static int
virQEMUCapsGetMachineTypesCaps(virQEMUCapsPtr qemuCaps,
size_t *nmachines,
virCapsGuestMachinePtr **machines)
{
size_t i;
virQEMUCapsAccelPtr accel;
/* Guest capabilities do not report TCG vs. KVM caps separately. We just
* take the set of machine types we probed first. */
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM))
accel = &qemuCaps->kvm;
else
accel = &qemuCaps->tcg;
*machines = NULL;
*nmachines = accel->nmachineTypes;
if (*nmachines)
*machines = g_new0(virCapsGuestMachinePtr, accel->nmachineTypes);
for (i = 0; i < accel->nmachineTypes; i++) {
virCapsGuestMachinePtr mach;
mach = g_new0(virCapsGuestMachine, 1);
(*machines)[i] = mach;
if (accel->machineTypes[i].alias) {
mach->name = g_strdup(accel->machineTypes[i].alias);
mach->canonical = g_strdup(accel->machineTypes[i].name);
} else {
mach->name = g_strdup(accel->machineTypes[i].name);
}
mach->maxCpus = accel->machineTypes[i].maxCpus;
mach->deprecated = accel->machineTypes[i].deprecated;
}
/* Make sure all canonical machine types also have their own entry so that
* /capabilities/guest/arch[@name='...']/machine/text() XPath selects all
* supported machine types.
*/
i = 0;
while (i < *nmachines) {
size_t j;
bool found = false;
virCapsGuestMachinePtr machine = (*machines)[i];
if (!machine->canonical) {
i++;
continue;
}
for (j = 0; j < *nmachines; j++) {
if (STREQ(machine->canonical, (*machines)[j]->name)) {
found = true;
break;
}
}
if (!found) {
virCapsGuestMachinePtr mach;
mach = g_new0(virCapsGuestMachine, 1);
if (VIR_INSERT_ELEMENT_COPY(*machines, i, *nmachines, mach) < 0) {
VIR_FREE(mach);
goto error;
}
mach->name = g_strdup(machine->canonical);
mach->maxCpus = machine->maxCpus;
mach->deprecated = machine->deprecated;
i++;
}
i++;
}
return 0;
error:
virCapabilitiesFreeMachines(*machines, *nmachines);
*nmachines = 0;
*machines = NULL;
return -1;
}
int
virQEMUCapsInitGuestFromBinary(virCapsPtr caps,
const char *binary,
virQEMUCapsPtr qemuCaps,
virArch guestarch)
{
virCapsGuestPtr guest;
virCapsGuestMachinePtr *machines = NULL;
size_t nmachines = 0;
int ret = -1;
if (!binary)
return 0;
if (virQEMUCapsGetMachineTypesCaps(qemuCaps, &nmachines, &machines) < 0)
goto cleanup;
/* We register kvm as the base emulator too, since we can
* just give -no-kvm to disable acceleration if required */
if ((guest = virCapabilitiesAddGuest(caps,
VIR_DOMAIN_OSTYPE_HVM,
guestarch,
binary,
NULL,
nmachines,
machines)) == NULL)
goto cleanup;
machines = NULL;
nmachines = 0;
/* CPU selection is always available, because all QEMU versions
* we support can use at least '-cpu host' */
virCapabilitiesAddGuestFeature(guest, VIR_CAPS_GUEST_FEATURE_TYPE_CPUSELECTION);
virCapabilitiesAddGuestFeature(guest, VIR_CAPS_GUEST_FEATURE_TYPE_DEVICEBOOT);
virCapabilitiesAddGuestFeatureWithToggle(guest, VIR_CAPS_GUEST_FEATURE_TYPE_DISKSNAPSHOT,
true, false);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_TCG)) {
if (virCapabilitiesAddGuestDomain(guest,
VIR_DOMAIN_VIRT_QEMU,
NULL,
NULL,
0,
NULL) == NULL) {
goto cleanup;
}
}
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
if (virCapabilitiesAddGuestDomain(guest,
VIR_DOMAIN_VIRT_KVM,
NULL,
NULL,
0,
NULL) == NULL) {
goto cleanup;
}
}
if ((ARCH_IS_X86(guestarch) || guestarch == VIR_ARCH_AARCH64))
virCapabilitiesAddGuestFeatureWithToggle(guest, VIR_CAPS_GUEST_FEATURE_TYPE_ACPI,
true, true);
if (ARCH_IS_X86(guestarch))
virCapabilitiesAddGuestFeatureWithToggle(guest, VIR_CAPS_GUEST_FEATURE_TYPE_APIC,
true, false);
if (guestarch == VIR_ARCH_I686) {
virCapabilitiesAddGuestFeature(guest, VIR_CAPS_GUEST_FEATURE_TYPE_PAE);
virCapabilitiesAddGuestFeature(guest, VIR_CAPS_GUEST_FEATURE_TYPE_NONPAE);
}
ret = 0;
cleanup:
virCapabilitiesFreeMachines(machines, nmachines);
return ret;
}
virCPUDefPtr
virQEMUCapsProbeHostCPU(virArch hostArch,
virDomainCapsCPUModelsPtr models)
{
return virCPUGetHost(hostArch, VIR_CPU_TYPE_GUEST, NULL, models);
}
virCapsPtr
virQEMUCapsInit(virFileCachePtr cache)
{
virCapsPtr caps;
size_t i;
virArch hostarch = virArchFromHost();
if ((caps = virCapabilitiesNew(hostarch,
true, true)) == NULL)
goto error;
if (virCapabilitiesInitCaches(caps) < 0)
VIR_WARN("Failed to get host CPU cache info");
/* Add the power management features of the host */
if (virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
VIR_WARN("Failed to get host power management capabilities");
/* Add IOMMU info */
virCapabilitiesHostInitIOMMU(caps);
/* Add huge pages info */
if (virCapabilitiesInitPages(caps) < 0)
VIR_WARN("Failed to get pages info");
/* Add domain migration transport URIs */
virCapabilitiesAddHostMigrateTransport(caps, "tcp");
virCapabilitiesAddHostMigrateTransport(caps, "rdma");
/* QEMU can support pretty much every arch that exists,
* so just probe for them all - we gracefully fail
* if a qemu-system-$ARCH binary can't be found
*/
for (i = 0; i < VIR_ARCH_LAST; i++)
if (virQEMUCapsInitGuest(caps, cache,
hostarch,
i) < 0)
goto error;
return caps;
error:
virObjectUnref(caps);
return NULL;
}
struct virQEMUCapsStringFlags {
const char *value;
int flag;
};
struct virQEMUCapsStringFlags virQEMUCapsCommands[] = {
{ "dump-guest-memory", QEMU_CAPS_DUMP_GUEST_MEMORY },
{ "query-spice", QEMU_CAPS_SPICE },
{ "query-vnc", QEMU_CAPS_VNC },
{ "nbd-server-start", QEMU_CAPS_NBD_SERVER },
{ "change-backing-file", QEMU_CAPS_CHANGE_BACKING_FILE },
{ "rtc-reset-reinjection", QEMU_CAPS_RTC_RESET_REINJECTION },
{ "migrate-incoming", QEMU_CAPS_INCOMING_DEFER },
{ "query-hotpluggable-cpus", QEMU_CAPS_QUERY_HOTPLUGGABLE_CPUS },
{ "query-qmp-schema", QEMU_CAPS_QUERY_QMP_SCHEMA },
{ "query-cpu-model-expansion", QEMU_CAPS_QUERY_CPU_MODEL_EXPANSION },
{ "query-cpu-definitions", QEMU_CAPS_QUERY_CPU_DEFINITIONS },
{ "query-named-block-nodes", QEMU_CAPS_QUERY_NAMED_BLOCK_NODES },
{ "query-cpus-fast", QEMU_CAPS_QUERY_CPUS_FAST },
{ "qom-list-properties", QEMU_CAPS_QOM_LIST_PROPERTIES },
{ "blockdev-del", QEMU_CAPS_BLOCKDEV_DEL },
{ "query-current-machine", QEMU_CAPS_QUERY_CURRENT_MACHINE },
{ "block-dirty-bitmap-merge", QEMU_CAPS_BITMAP_MERGE },
{ "query-cpu-model-baseline", QEMU_CAPS_QUERY_CPU_MODEL_BASELINE },
{ "query-cpu-model-comparison", QEMU_CAPS_QUERY_CPU_MODEL_COMPARISON },
{ "block-export-add", QEMU_CAPS_BLOCK_EXPORT_ADD },
};
struct virQEMUCapsStringFlags virQEMUCapsMigration[] = {
{ "rdma-pin-all", QEMU_CAPS_MIGRATE_RDMA },
};
/* Use virQEMUCapsQMPSchemaQueries for querying parameters of events */
struct virQEMUCapsStringFlags virQEMUCapsEvents[] = {
{ "MIGRATION", QEMU_CAPS_MIGRATION_EVENT },
{ "VSERPORT_CHANGE", QEMU_CAPS_VSERPORT_CHANGE },
{ "BLOCK_WRITE_THRESHOLD", QEMU_CAPS_BLOCK_WRITE_THRESHOLD },
{ "DUMP_COMPLETED", QEMU_CAPS_DUMP_COMPLETED },
};
struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
{ "hda-duplex", QEMU_CAPS_HDA_DUPLEX },
{ "hda-micro", QEMU_CAPS_HDA_MICRO },
{ "ccid-card-emulated", QEMU_CAPS_CCID_EMULATED },
{ "ccid-card-passthru", QEMU_CAPS_CCID_PASSTHRU },
{ "piix3-usb-uhci", QEMU_CAPS_PIIX3_USB_UHCI },
{ "piix4-usb-uhci", QEMU_CAPS_PIIX4_USB_UHCI },
{ "usb-ehci", QEMU_CAPS_USB_EHCI },
{ "ich9-usb-ehci1", QEMU_CAPS_ICH9_USB_EHCI1 },
{ "vt82c686b-usb-uhci", QEMU_CAPS_VT82C686B_USB_UHCI },
{ "pci-ohci", QEMU_CAPS_PCI_OHCI },
{ "nec-usb-xhci", QEMU_CAPS_NEC_USB_XHCI },
{ "usb-redir", QEMU_CAPS_USB_REDIR },
{ "usb-hub", QEMU_CAPS_USB_HUB },
{ "ich9-ahci", QEMU_CAPS_ICH9_AHCI },
{ "virtio-blk-s390", QEMU_CAPS_VIRTIO_S390 },
{ "virtio-blk-ccw", QEMU_CAPS_VIRTIO_CCW },
{ "sclpconsole", QEMU_CAPS_DEVICE_SCLPCONSOLE },
{ "lsi53c895a", QEMU_CAPS_SCSI_LSI },
{ "virtio-scsi-pci", QEMU_CAPS_VIRTIO_SCSI },
{ "virtio-scsi-s390", QEMU_CAPS_VIRTIO_SCSI },
{ "virtio-scsi-ccw", QEMU_CAPS_VIRTIO_SCSI },
{ "virtio-scsi-device", QEMU_CAPS_VIRTIO_SCSI },
{ "megasas", QEMU_CAPS_SCSI_MEGASAS },
{ "qxl", QEMU_CAPS_DEVICE_QXL },
{ "sga", QEMU_CAPS_SGA },
{ "scsi-block", QEMU_CAPS_SCSI_BLOCK },
{ "VGA", QEMU_CAPS_DEVICE_VGA },
{ "cirrus-vga", QEMU_CAPS_DEVICE_CIRRUS_VGA },
{ "vmware-svga", QEMU_CAPS_DEVICE_VMWARE_SVGA },
{ "usb-serial", QEMU_CAPS_DEVICE_USB_SERIAL },
{ "virtio-rng-pci", QEMU_CAPS_DEVICE_VIRTIO_RNG },
{ "virtio-rng-s390", QEMU_CAPS_DEVICE_VIRTIO_RNG },
{ "virtio-rng-ccw", QEMU_CAPS_DEVICE_VIRTIO_RNG },
{ "virtio-rng-device", QEMU_CAPS_DEVICE_VIRTIO_RNG },
{ "rng-random", QEMU_CAPS_OBJECT_RNG_RANDOM },
{ "rng-egd", QEMU_CAPS_OBJECT_RNG_EGD },
{ "spapr-nvram", QEMU_CAPS_DEVICE_NVRAM },
{ "pci-bridge", QEMU_CAPS_DEVICE_PCI_BRIDGE },
{ "vfio-pci", QEMU_CAPS_DEVICE_VFIO_PCI },
{ "i82801b11-bridge", QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE },
{ "usb-storage", QEMU_CAPS_DEVICE_USB_STORAGE },
{ "virtio-mmio", QEMU_CAPS_DEVICE_VIRTIO_MMIO },
{ "ich9-intel-hda", QEMU_CAPS_DEVICE_ICH9_INTEL_HDA },
{ "pvpanic", QEMU_CAPS_DEVICE_PANIC },
{ "usb-kbd", QEMU_CAPS_DEVICE_USB_KBD },
{ "memory-backend-ram", QEMU_CAPS_OBJECT_MEMORY_RAM },
{ "memory-backend-file", QEMU_CAPS_OBJECT_MEMORY_FILE },
{ "usb-audio", QEMU_CAPS_OBJECT_USB_AUDIO },
{ "iothread", QEMU_CAPS_OBJECT_IOTHREAD},
{ "ivshmem", QEMU_CAPS_DEVICE_IVSHMEM },
{ "pc-dimm", QEMU_CAPS_DEVICE_PC_DIMM },
{ "pci-serial", QEMU_CAPS_DEVICE_PCI_SERIAL },
{ "gpex-pcihost", QEMU_CAPS_OBJECT_GPEX},
{ "ioh3420", QEMU_CAPS_DEVICE_IOH3420 },
{ "x3130-upstream", QEMU_CAPS_DEVICE_X3130_UPSTREAM },
{ "xio3130-downstream", QEMU_CAPS_DEVICE_XIO3130_DOWNSTREAM },
{ "rtl8139", QEMU_CAPS_DEVICE_RTL8139 },
{ "e1000", QEMU_CAPS_DEVICE_E1000 },
{ "virtio-net-pci", QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-net-ccw", QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-net-s390", QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-net-device", QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-gpu-pci", QEMU_CAPS_DEVICE_VIRTIO_GPU },
{ "virtio-gpu-device", QEMU_CAPS_DEVICE_VIRTIO_GPU },
{ "virtio-vga", QEMU_CAPS_DEVICE_VIRTIO_VGA },
{ "virtio-keyboard-device", QEMU_CAPS_VIRTIO_KEYBOARD },
{ "virtio-keyboard-pci", QEMU_CAPS_VIRTIO_KEYBOARD },
{ "virtio-mouse-device", QEMU_CAPS_VIRTIO_MOUSE },
{ "virtio-mouse-pci", QEMU_CAPS_VIRTIO_MOUSE },
{ "virtio-tablet-device", QEMU_CAPS_VIRTIO_TABLET },
{ "virtio-tablet-pci", QEMU_CAPS_VIRTIO_TABLET },
{ "virtio-input-host-device", QEMU_CAPS_VIRTIO_INPUT_HOST },
{ "virtio-input-host-pci", QEMU_CAPS_VIRTIO_INPUT_HOST },
{ "mptsas1068", QEMU_CAPS_SCSI_MPTSAS1068 },
{ "secret", QEMU_CAPS_OBJECT_SECRET },
{ "pxb", QEMU_CAPS_DEVICE_PXB },
{ "pxb-pcie", QEMU_CAPS_DEVICE_PXB_PCIE },
{ "tls-creds-x509", QEMU_CAPS_OBJECT_TLS_CREDS_X509 },
{ "intel-iommu", QEMU_CAPS_DEVICE_INTEL_IOMMU },
{ "ivshmem-plain", QEMU_CAPS_DEVICE_IVSHMEM_PLAIN },
{ "ivshmem-doorbell", QEMU_CAPS_DEVICE_IVSHMEM_DOORBELL },
{ "vhost-scsi", QEMU_CAPS_DEVICE_VHOST_SCSI },
{ "nvdimm", QEMU_CAPS_DEVICE_NVDIMM },
{ "pcie-root-port", QEMU_CAPS_DEVICE_PCIE_ROOT_PORT },
{ "qemu-xhci", QEMU_CAPS_DEVICE_QEMU_XHCI },
{ "spapr-pci-host-bridge", QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE },
{ "vmcoreinfo", QEMU_CAPS_DEVICE_VMCOREINFO },
{ "spapr-vty", QEMU_CAPS_DEVICE_SPAPR_VTY },
{ "sclplmconsole", QEMU_CAPS_DEVICE_SCLPLMCONSOLE },
{ "isa-serial", QEMU_CAPS_DEVICE_ISA_SERIAL },
{ "pl011", QEMU_CAPS_DEVICE_PL011 },
{ "virtio-gpu-ccw", QEMU_CAPS_DEVICE_VIRTIO_GPU_CCW },
{ "virtio-keyboard-ccw", QEMU_CAPS_DEVICE_VIRTIO_KEYBOARD_CCW },
{ "virtio-mouse-ccw", QEMU_CAPS_DEVICE_VIRTIO_MOUSE_CCW },
{ "virtio-tablet-ccw", QEMU_CAPS_DEVICE_VIRTIO_TABLET_CCW },
{ "pcie-pci-bridge", QEMU_CAPS_DEVICE_PCIE_PCI_BRIDGE },
{ "pr-manager-helper", QEMU_CAPS_PR_MANAGER_HELPER },
{ "virtual-css-bridge", QEMU_CAPS_CCW },
{ "vfio-ccw", QEMU_CAPS_DEVICE_VFIO_CCW },
{ "hda-output", QEMU_CAPS_HDA_OUTPUT },
{ "vmgenid", QEMU_CAPS_DEVICE_VMGENID },
{ "vhost-vsock-device", QEMU_CAPS_DEVICE_VHOST_VSOCK },
{ "mch", QEMU_CAPS_DEVICE_MCH },
{ "sev-guest", QEMU_CAPS_SEV_GUEST },
{ "vfio-ap", QEMU_CAPS_DEVICE_VFIO_AP },
{ "zpci", QEMU_CAPS_DEVICE_ZPCI },
{ "memory-backend-memfd", QEMU_CAPS_OBJECT_MEMORY_MEMFD },
{ "virtio-blk-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-blk-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-net-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-net-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "vhost-scsi-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "vhost-scsi-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-rng-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-rng-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-9p-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-9p-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-balloon-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-balloon-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "vhost-vsock-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "vhost-vsock-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-input-host-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-input-host-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-scsi-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-scsi-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-serial-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-serial-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "max-x86_64-cpu", QEMU_CAPS_X86_MAX_CPU },
{ "bochs-display", QEMU_CAPS_DEVICE_BOCHS_DISPLAY },
{ "dbus-vmstate", QEMU_CAPS_DBUS_VMSTATE },
{ "vhost-user-gpu", QEMU_CAPS_DEVICE_VHOST_USER_GPU },
{ "vhost-user-vga", QEMU_CAPS_DEVICE_VHOST_USER_VGA },
{ "ramfb", QEMU_CAPS_DEVICE_RAMFB },
{ "max-arm-cpu", QEMU_CAPS_ARM_MAX_CPU },
{ "i8042", QEMU_CAPS_DEVICE_I8042 },
{ "rng-builtin", QEMU_CAPS_OBJECT_RNG_BUILTIN },
{ "tpm-spapr", QEMU_CAPS_DEVICE_TPM_SPAPR },
{ "vhost-user-fs-device", QEMU_CAPS_DEVICE_VHOST_USER_FS },
{ "tcg-accel", QEMU_CAPS_TCG },
{ "pvscsi", QEMU_CAPS_SCSI_PVSCSI },
{ "spapr-tpm-proxy", QEMU_CAPS_DEVICE_SPAPR_TPM_PROXY },
/*
* We don't probe 'esp' directly, because it is often reported
* as present for all QEMU binaries, due to it being enabled
* for built as a dependancy of dc390/am53c974 PCI SCSI
* controllers.
*
* The base 'esp' device is only used as a built-in device
* and is not user-creatable. So we turn this cap on later
* based on arch.
*
* { "esp", QEMU_CAPS_SCSI_NCR53C90 },
*/
{ "dc390", QEMU_CAPS_SCSI_DC390 },
{ "am53c974", QEMU_CAPS_SCSI_AM53C974 },
{ "virtio-pmem-pci", QEMU_CAPS_DEVICE_VIRTIO_PMEM_PCI },
{ "vhost-user-blk", QEMU_CAPS_DEVICE_VHOST_USER_BLK },
};
struct virQEMUCapsDevicePropsFlags {
const char *value;
int flag;
int (*cb)(virJSONValuePtr props, virQEMUCapsPtr caps);
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioBalloon[] = {
{ "deflate-on-oom", QEMU_CAPS_VIRTIO_BALLOON_AUTODEFLATE, NULL },
{ "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY, NULL },
{ "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM, NULL },
{ "ats", QEMU_CAPS_VIRTIO_PCI_ATS, NULL },
{ "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES, NULL },
{ "free-page-reporting", QEMU_CAPS_VIRTIO_BALLOON_FREE_PAGE_REPORTING, NULL },
};
static int
virQEMUCapsDevicePropsVirtioBlkSCSIDefault(virJSONValuePtr props,
virQEMUCapsPtr qemuCaps)
{
bool def = false;
if (virJSONValueObjectGetBoolean(props, "default-value", &def) < 0)
return 0;
if (def == false)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VIRTIO_BLK_SCSI_DEFAULT_DISABLED);
return 0;
}
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioBlk[] = {
{ "ioeventfd", QEMU_CAPS_VIRTIO_IOEVENTFD, NULL },
{ "event_idx", QEMU_CAPS_VIRTIO_BLK_EVENT_IDX, NULL },
{ "scsi", QEMU_CAPS_VIRTIO_BLK_SCSI, virQEMUCapsDevicePropsVirtioBlkSCSIDefault },
{ "logical_block_size", QEMU_CAPS_BLOCKIO, NULL },
{ "num-queues", QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES, NULL },
{ "share-rw", QEMU_CAPS_DISK_SHARE_RW, NULL },
{ "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY, NULL },
{ "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM, NULL },
{ "ats", QEMU_CAPS_VIRTIO_PCI_ATS, NULL },
{ "write-cache", QEMU_CAPS_DISK_WRITE_CACHE, NULL },
{ "werror", QEMU_CAPS_STORAGE_WERROR, NULL },
{ "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioNet[] = {
{ "tx", QEMU_CAPS_VIRTIO_TX_ALG, NULL },
{ "event_idx", QEMU_CAPS_VIRTIO_NET_EVENT_IDX, NULL },
{ "rx_queue_size", QEMU_CAPS_VIRTIO_NET_RX_QUEUE_SIZE, NULL },
{ "tx_queue_size", QEMU_CAPS_VIRTIO_NET_TX_QUEUE_SIZE, NULL },
{ "host_mtu", QEMU_CAPS_VIRTIO_NET_HOST_MTU, NULL },
{ "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY, NULL },
{ "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM, NULL },
{ "ats", QEMU_CAPS_VIRTIO_PCI_ATS, NULL },
{ "failover", QEMU_CAPS_VIRTIO_NET_FAILOVER, NULL },
{ "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsPCIeRootPort[] = {
{ "hotplug", QEMU_CAPS_PCIE_ROOT_PORT_HOTPLUG, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsUSBHost[] = {
{ "hostdevice", QEMU_CAPS_USB_HOST_HOSTDEVICE, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsSpaprPCIHostBridge[] = {
{ "numa_node", QEMU_CAPS_SPAPR_PCI_HOST_BRIDGE_NUMA_NODE, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioSCSI[] = {
{ "iothread", QEMU_CAPS_VIRTIO_SCSI_IOTHREAD, NULL },
{ "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY, NULL },
{ "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM, NULL },
{ "ats", QEMU_CAPS_VIRTIO_PCI_ATS, NULL },
{ "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVfioPCI[] = {
{ "display", QEMU_CAPS_VFIO_PCI_DISPLAY, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsSCSIDisk[] = {
{ "channel", QEMU_CAPS_SCSI_DISK_CHANNEL, NULL },
{ "wwn", QEMU_CAPS_SCSI_DISK_WWN, NULL },
{ "share-rw", QEMU_CAPS_DISK_SHARE_RW, NULL },
{ "write-cache", QEMU_CAPS_DISK_WRITE_CACHE, NULL },
{ "device_id", QEMU_CAPS_SCSI_DISK_DEVICE_ID, NULL },
{ "werror", QEMU_CAPS_STORAGE_WERROR, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsIDEDrive[] = {
{ "wwn", QEMU_CAPS_IDE_DRIVE_WWN, NULL },
{ "share-rw", QEMU_CAPS_DISK_SHARE_RW, NULL },
{ "write-cache", QEMU_CAPS_DISK_WRITE_CACHE, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsPiix4PM[] = {
{ "disable_s3", QEMU_CAPS_PIIX_DISABLE_S3, NULL },
{ "disable_s4", QEMU_CAPS_PIIX_DISABLE_S4, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsUSBRedir[] = {
{ "filter", QEMU_CAPS_USB_REDIR_FILTER, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsI440FXPCIHost[] = {
{ "pci-hole64-size", QEMU_CAPS_I440FX_PCI_HOLE64_SIZE, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsQ35PCIHost[] = {
{ "pci-hole64-size", QEMU_CAPS_Q35_PCI_HOLE64_SIZE, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsUSBStorage[] = {
{ "removable", QEMU_CAPS_USB_STORAGE_REMOVABLE, NULL },
{ "share-rw", QEMU_CAPS_DISK_SHARE_RW, NULL },
{ "write-cache", QEMU_CAPS_DISK_WRITE_CACHE, NULL },
{ "werror", QEMU_CAPS_USB_STORAGE_WERROR, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsKVMPit[] = {
{ "lost_tick_policy", QEMU_CAPS_KVM_PIT_TICK_POLICY, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVGA[] = {
{ "vgamem_mb", QEMU_CAPS_VGA_VGAMEM, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVmwareSvga[] = {
{ "vgamem_mb", QEMU_CAPS_VMWARE_SVGA_VGAMEM, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsQxl[] = {
{ "vgamem_mb", QEMU_CAPS_QXL_VGAMEM, NULL },
{ "vram64_size_mb", QEMU_CAPS_QXL_VRAM64, NULL },
{ "max_outputs", QEMU_CAPS_QXL_MAX_OUTPUTS, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioGpu[] = {
{ "virgl", QEMU_CAPS_VIRTIO_GPU_VIRGL, NULL },
{ "max_outputs", QEMU_CAPS_VIRTIO_GPU_MAX_OUTPUTS, NULL },
{ "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY, NULL },
{ "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM, NULL },
{ "ats", QEMU_CAPS_VIRTIO_PCI_ATS, NULL },
{ "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsICH9[] = {
{ "disable_s3", QEMU_CAPS_ICH9_DISABLE_S3, NULL },
{ "disable_s4", QEMU_CAPS_ICH9_DISABLE_S4, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsUSBNECXHCI[] = {
{ "p3", QEMU_CAPS_NEC_USB_XHCI_PORTS, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsIntelIOMMU[] = {
{ "intremap", QEMU_CAPS_INTEL_IOMMU_INTREMAP, NULL },
{ "caching-mode", QEMU_CAPS_INTEL_IOMMU_CACHING_MODE, NULL },
{ "eim", QEMU_CAPS_INTEL_IOMMU_EIM, NULL },
{ "device-iotlb", QEMU_CAPS_INTEL_IOMMU_DEVICE_IOTLB, NULL },
{ "aw-bits", QEMU_CAPS_INTEL_IOMMU_AW_BITS, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsObjectPropsVirtualCSSBridge[] = {
{ "cssid-unrestricted", QEMU_CAPS_CCW_CSSID_UNRESTRICTED, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsMCH[] = {
{ "extended-tseg-mbytes", QEMU_CAPS_MCH_EXTENDED_TSEG_MBYTES, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsNVDIMM[] = {
{ "unarmed", QEMU_CAPS_DEVICE_NVDIMM_UNARMED, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVhostUserFS[] = {
{ "bootindex", QEMU_CAPS_VHOST_USER_FS_BOOTINDEX, NULL },
};
/* see documentation for virQEMUQAPISchemaPathGet for the query format */
static struct virQEMUCapsStringFlags virQEMUCapsQMPSchemaQueries[] = {
{ "blockdev-add/arg-type/options/+gluster/debug-level", QEMU_CAPS_GLUSTER_DEBUG_LEVEL},
{ "blockdev-add/arg-type/+gluster/debug", QEMU_CAPS_GLUSTER_DEBUG_LEVEL},
{ "blockdev-add/arg-type/+vxhs", QEMU_CAPS_VXHS},
{ "blockdev-add/arg-type/+iscsi/password-secret", QEMU_CAPS_ISCSI_PASSWORD_SECRET },
{ "blockdev-add/arg-type/+qcow2/encrypt/+luks/key-secret", QEMU_CAPS_QCOW2_LUKS },
{ "nbd-server-start/arg-type/tls-creds", QEMU_CAPS_NBD_TLS },
{ "screendump/arg-type/device", QEMU_CAPS_SCREENDUMP_DEVICE },
{ "block-commit/arg-type/*top", QEMU_CAPS_ACTIVE_COMMIT },
{ "query-iothreads/ret-type/poll-max-ns", QEMU_CAPS_IOTHREAD_POLLING },
{ "query-display-options/ret-type/+egl-headless/rendernode", QEMU_CAPS_EGL_HEADLESS_RENDERNODE },
{ "nbd-server-add/arg-type/bitmap", QEMU_CAPS_NBD_BITMAP },
{ "blockdev-add/arg-type/+file/drop-cache", QEMU_CAPS_MIGRATION_FILE_DROP_CACHE },
{ "blockdev-add/arg-type/+file/$dynamic-auto-read-only", QEMU_CAPS_BLOCK_FILE_AUTO_READONLY_DYNAMIC },
{ "human-monitor-command/$savevm-monitor-nodes", QEMU_CAPS_SAVEVM_MONITOR_NODES },
{ "blockdev-add/arg-type/+nvme", QEMU_CAPS_DRIVE_NVME },
{ "query-named-block-nodes/arg-type/flat", QEMU_CAPS_QMP_QUERY_NAMED_BLOCK_NODES_FLAT },
{ "blockdev-snapshot/$allow-write-only-overlay", QEMU_CAPS_BLOCKDEV_SNAPSHOT_ALLOW_WRITE_ONLY },
{ "blockdev-add/arg-type/+file/aio/^io_uring", QEMU_CAPS_AIO_IO_URING },
{ "migrate-set-parameters/arg-type/max-bandwidth", QEMU_CAPS_MIGRATION_PARAM_BANDWIDTH },
{ "migrate-set-parameters/arg-type/downtime-limit", QEMU_CAPS_MIGRATION_PARAM_DOWNTIME },
{ "migrate-set-parameters/arg-type/xbzrle-cache-size", QEMU_CAPS_MIGRATION_PARAM_XBZRLE_CACHE_SIZE },
{ "set-numa-node/arg-type/+hmat-lb", QEMU_CAPS_NUMA_HMAT },
{ "netdev_add/arg-type/+vhost-vdpa", QEMU_CAPS_NETDEV_VHOST_VDPA },
{ "migrate-set-parameters/arg-type/block-bitmap-mapping/bitmaps/transform",
QEMU_CAPS_MIGRATION_PARAM_BLOCK_BITMAP_MAPPING },
};
typedef struct _virQEMUCapsObjectTypeProps virQEMUCapsObjectTypeProps;
struct _virQEMUCapsObjectTypeProps {
const char *type;
struct virQEMUCapsStringFlags *props;
size_t nprops;
int capsCondition;
};
typedef struct _virQEMUCapsDeviceTypeProps virQEMUCapsDeviceTypeProps;
struct _virQEMUCapsDeviceTypeProps {
const char *type;
struct virQEMUCapsDevicePropsFlags *props;
size_t nprops;
int capsCondition;
};
static virQEMUCapsDeviceTypeProps virQEMUCapsDeviceProps[] = {
{ "virtio-blk-pci", virQEMUCapsDevicePropsVirtioBlk,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioBlk),
-1 },
{ "virtio-net-pci", virQEMUCapsDevicePropsVirtioNet,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioNet),
QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-scsi-pci", virQEMUCapsDevicePropsVirtioSCSI,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioSCSI),
QEMU_CAPS_VIRTIO_SCSI },
{ "virtio-blk-ccw", virQEMUCapsDevicePropsVirtioBlk,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioBlk),
QEMU_CAPS_VIRTIO_CCW },
{ "virtio-net-ccw", virQEMUCapsDevicePropsVirtioNet,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioNet),
QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "virtio-scsi-ccw", virQEMUCapsDevicePropsVirtioSCSI,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioSCSI),
QEMU_CAPS_VIRTIO_SCSI },
{ "virtio-blk-s390", virQEMUCapsDevicePropsVirtioBlk,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioBlk),
QEMU_CAPS_VIRTIO_S390 },
{ "virtio-net-s390", virQEMUCapsDevicePropsVirtioNet,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioNet),
QEMU_CAPS_DEVICE_VIRTIO_NET },
{ "vfio-pci", virQEMUCapsDevicePropsVfioPCI,
G_N_ELEMENTS(virQEMUCapsDevicePropsVfioPCI),
QEMU_CAPS_DEVICE_VFIO_PCI },
{ "scsi-hd", virQEMUCapsDevicePropsSCSIDisk,
G_N_ELEMENTS(virQEMUCapsDevicePropsSCSIDisk),
-1 },
{ "ide-hd", virQEMUCapsDevicePropsIDEDrive,
G_N_ELEMENTS(virQEMUCapsDevicePropsIDEDrive),
-1 },
{ "PIIX4_PM", virQEMUCapsDevicePropsPiix4PM,
G_N_ELEMENTS(virQEMUCapsDevicePropsPiix4PM),
-1 },
{ "usb-redir", virQEMUCapsDevicePropsUSBRedir,
G_N_ELEMENTS(virQEMUCapsDevicePropsUSBRedir),
QEMU_CAPS_USB_REDIR },
{ "i440FX-pcihost", virQEMUCapsDevicePropsI440FXPCIHost,
G_N_ELEMENTS(virQEMUCapsDevicePropsI440FXPCIHost),
-1 },
{ "q35-pcihost", virQEMUCapsDevicePropsQ35PCIHost,
G_N_ELEMENTS(virQEMUCapsDevicePropsQ35PCIHost),
-1 },
{ "usb-storage", virQEMUCapsDevicePropsUSBStorage,
G_N_ELEMENTS(virQEMUCapsDevicePropsUSBStorage),
QEMU_CAPS_DEVICE_USB_STORAGE },
{ "kvm-pit", virQEMUCapsDevicePropsKVMPit,
G_N_ELEMENTS(virQEMUCapsDevicePropsKVMPit),
-1 },
{ "VGA", virQEMUCapsDevicePropsVGA,
G_N_ELEMENTS(virQEMUCapsDevicePropsVGA),
QEMU_CAPS_DEVICE_VGA },
{ "vmware-svga", virQEMUCapsDevicePropsVmwareSvga,
G_N_ELEMENTS(virQEMUCapsDevicePropsVmwareSvga),
QEMU_CAPS_DEVICE_VMWARE_SVGA },
{ "qxl", virQEMUCapsDevicePropsQxl,
G_N_ELEMENTS(virQEMUCapsDevicePropsQxl),
QEMU_CAPS_DEVICE_QXL },
{ "virtio-gpu-pci", virQEMUCapsDevicePropsVirtioGpu,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioGpu),
QEMU_CAPS_DEVICE_VIRTIO_GPU },
{ "virtio-gpu-device", virQEMUCapsDevicePropsVirtioGpu,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioGpu),
QEMU_CAPS_DEVICE_VIRTIO_GPU },
{ "ICH9-LPC", virQEMUCapsDevicePropsICH9,
G_N_ELEMENTS(virQEMUCapsDevicePropsICH9),
-1 },
{ "virtio-balloon-pci", virQEMUCapsDevicePropsVirtioBalloon,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioBalloon),
-1 },
{ "virtio-balloon-ccw", virQEMUCapsDevicePropsVirtioBalloon,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioBalloon),
-1 },
{ "virtio-balloon-device", virQEMUCapsDevicePropsVirtioBalloon,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioBalloon),
-1 },
{ "nec-usb-xhci", virQEMUCapsDevicePropsUSBNECXHCI,
G_N_ELEMENTS(virQEMUCapsDevicePropsUSBNECXHCI),
QEMU_CAPS_NEC_USB_XHCI },
{ "intel-iommu", virQEMUCapsDevicePropsIntelIOMMU,
G_N_ELEMENTS(virQEMUCapsDevicePropsIntelIOMMU),
QEMU_CAPS_DEVICE_INTEL_IOMMU },
{ "spapr-pci-host-bridge", virQEMUCapsDevicePropsSpaprPCIHostBridge,
G_N_ELEMENTS(virQEMUCapsDevicePropsSpaprPCIHostBridge),
QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE },
{ "virtio-gpu-ccw", virQEMUCapsDevicePropsVirtioGpu,
G_N_ELEMENTS(virQEMUCapsDevicePropsVirtioGpu),
QEMU_CAPS_DEVICE_VIRTIO_GPU_CCW },
{ "virtual-css-bridge", virQEMUCapsObjectPropsVirtualCSSBridge,
G_N_ELEMENTS(virQEMUCapsObjectPropsVirtualCSSBridge),
QEMU_CAPS_CCW },
{ "mch", virQEMUCapsDevicePropsMCH,
G_N_ELEMENTS(virQEMUCapsDevicePropsMCH),
QEMU_CAPS_DEVICE_MCH },
{ "nvdimm", virQEMUCapsDevicePropsNVDIMM,
G_N_ELEMENTS(virQEMUCapsDevicePropsNVDIMM),
QEMU_CAPS_DEVICE_NVDIMM },
{ "pcie-root-port", virQEMUCapsDevicePropsPCIeRootPort,
G_N_ELEMENTS(virQEMUCapsDevicePropsPCIeRootPort),
QEMU_CAPS_DEVICE_PCIE_ROOT_PORT },
{ "usb-host", virQEMUCapsDevicePropsUSBHost,
G_N_ELEMENTS(virQEMUCapsDevicePropsUSBHost),
-1 },
{ "vhost-user-fs-device", virQEMUCapsDevicePropsVhostUserFS,
G_N_ELEMENTS(virQEMUCapsDevicePropsVhostUserFS),
QEMU_CAPS_DEVICE_VHOST_USER_FS },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsMemoryBackendFile[] = {
{ "discard-data", QEMU_CAPS_OBJECT_MEMORY_FILE_DISCARD },
{ "align", QEMU_CAPS_OBJECT_MEMORY_FILE_ALIGN },
{ "pmem", QEMU_CAPS_OBJECT_MEMORY_FILE_PMEM },
/* As of QEMU commit 8db0b20415c129cf5e577a593a4a0372d90b7cc9 the
* "x-use-canonical-path-for-ramblock-id" property is considered stable and
* supported. The 'x-' prefix was kept for compatibility with already
* released qemu versions. */
{ "x-use-canonical-path-for-ramblock-id", QEMU_CAPS_X_USE_CANONICAL_PATH_FOR_RAMBLOCK_ID },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsMemoryBackendMemfd[] = {
{ "hugetlb", QEMU_CAPS_OBJECT_MEMORY_MEMFD_HUGETLB },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsMaxCPU[] = {
{ "unavailable-features", QEMU_CAPS_CPU_UNAVAILABLE_FEATURES },
{ "kvm-no-adjvtime", QEMU_CAPS_CPU_KVM_NO_ADJVTIME },
{ "migratable", QEMU_CAPS_CPU_MIGRATABLE },
};
static virQEMUCapsObjectTypeProps virQEMUCapsObjectProps[] = {
{ "memory-backend-file", virQEMUCapsObjectPropsMemoryBackendFile,
G_N_ELEMENTS(virQEMUCapsObjectPropsMemoryBackendFile),
QEMU_CAPS_OBJECT_MEMORY_FILE },
{ "memory-backend-memfd", virQEMUCapsObjectPropsMemoryBackendMemfd,
G_N_ELEMENTS(virQEMUCapsObjectPropsMemoryBackendMemfd),
QEMU_CAPS_OBJECT_MEMORY_MEMFD },
{ "max-x86_64-cpu", virQEMUCapsObjectPropsMaxCPU,
G_N_ELEMENTS(virQEMUCapsObjectPropsMaxCPU),
QEMU_CAPS_X86_MAX_CPU },
{ "max-arm-cpu", virQEMUCapsObjectPropsMaxCPU,
G_N_ELEMENTS(virQEMUCapsObjectPropsMaxCPU),
QEMU_CAPS_ARM_MAX_CPU },
};
static struct virQEMUCapsStringFlags virQEMUCapsMachinePropsPSeries[] = {
{ "cap-hpt-max-page-size", QEMU_CAPS_MACHINE_PSERIES_CAP_HPT_MAX_PAGE_SIZE },
{ "cap-htm", QEMU_CAPS_MACHINE_PSERIES_CAP_HTM },
{ "cap-nested-hv", QEMU_CAPS_MACHINE_PSERIES_CAP_NESTED_HV },
{ "cap-ccf-assist", QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST },
{ "cap-cfpc", QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC },
{ "cap-sbbc", QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC },
{ "cap-ibs", QEMU_CAPS_MACHINE_PSERIES_CAP_IBS },
};
static struct virQEMUCapsStringFlags virQEMUCapsMachinePropsVirt[] = {
{ "iommu", QEMU_CAPS_MACHINE_VIRT_IOMMU },
};
static virQEMUCapsObjectTypeProps virQEMUCapsMachineProps[] = {
{ "pseries", virQEMUCapsMachinePropsPSeries,
G_N_ELEMENTS(virQEMUCapsMachinePropsPSeries),
-1 },
{ "virt", virQEMUCapsMachinePropsVirt,
G_N_ELEMENTS(virQEMUCapsMachinePropsVirt),
-1 },
};
static void
virQEMUCapsProcessStringFlags(virQEMUCapsPtr qemuCaps,
size_t nflags,
struct virQEMUCapsStringFlags *flags,
size_t nvalues,
char *const*values)
{
size_t i, j;
for (i = 0; i < nflags; i++) {
if (virQEMUCapsGet(qemuCaps, flags[i].flag))
continue;
for (j = 0; j < nvalues; j++) {
if (STREQ(values[j], flags[i].value)) {
virQEMUCapsSet(qemuCaps, flags[i].flag);
break;
}
}
}
}
int virQEMUCapsGetDefaultVersion(virCapsPtr caps,
virFileCachePtr capsCache,
unsigned int *version)
{
virQEMUCapsPtr qemucaps;
virArch hostarch;
virCapsDomainDataPtr capsdata;
if (*version > 0)
return 0;
hostarch = virArchFromHost();
if (!(capsdata = virCapabilitiesDomainDataLookup(caps,
VIR_DOMAIN_OSTYPE_HVM, hostarch, VIR_DOMAIN_VIRT_QEMU,
NULL, NULL))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Cannot find suitable emulator for %s"),
virArchToString(hostarch));
return -1;
}
qemucaps = virQEMUCapsCacheLookup(capsCache, capsdata->emulator);
VIR_FREE(capsdata);
if (!qemucaps)
return -1;
*version = virQEMUCapsGetVersion(qemucaps);
virObjectUnref(qemucaps);
return 0;
}
virQEMUCapsPtr
virQEMUCapsNew(void)
{
virQEMUCapsPtr qemuCaps;
if (virQEMUCapsInitialize() < 0)
return NULL;
if (!(qemuCaps = virObjectNew(virQEMUCapsClass)))
return NULL;
qemuCaps->invalidation = true;
qemuCaps->flags = virBitmapNew(QEMU_CAPS_LAST);
return qemuCaps;
}
virQEMUCapsPtr
virQEMUCapsNewBinary(const char *binary)
{
virQEMUCapsPtr qemuCaps = virQEMUCapsNew();
if (qemuCaps)
qemuCaps->binary = g_strdup(binary);
return qemuCaps;
}
static int
virQEMUCapsHostCPUDataCopy(virQEMUCapsHostCPUDataPtr dst,
virQEMUCapsHostCPUDataPtr src)
{
if (src->info &&
!(dst->info = qemuMonitorCPUModelInfoCopy(src->info)))
return -1;
if (src->reported &&
!(dst->reported = virCPUDefCopy(src->reported)))
return -1;
if (src->migratable &&
!(dst->migratable = virCPUDefCopy(src->migratable)))
return -1;
if (src->full &&
!(dst->full = virCPUDefCopy(src->full)))
return -1;
return 0;
}
static void
virQEMUCapsHostCPUDataClear(virQEMUCapsHostCPUDataPtr cpuData)
{
qemuMonitorCPUModelInfoFree(cpuData->info);
virCPUDefFree(cpuData->reported);
virCPUDefFree(cpuData->migratable);
virCPUDefFree(cpuData->full);
memset(cpuData, 0, sizeof(*cpuData));
}
static int
virQEMUCapsSEVInfoCopy(virSEVCapabilityPtr *dst,
virSEVCapabilityPtr src)
{
g_autoptr(virSEVCapability) tmp = NULL;
tmp = g_new0(virSEVCapability, 1);
tmp->pdh = g_strdup(src->pdh);
tmp->cert_chain = g_strdup(src->cert_chain);
tmp->cbitpos = src->cbitpos;
tmp->reduced_phys_bits = src->reduced_phys_bits;
*dst = g_steal_pointer(&tmp);
return 0;
}
static void
virQEMUCapsAccelCopyMachineTypes(virQEMUCapsAccelPtr dst,
virQEMUCapsAccelPtr src)
{
size_t i;
dst->machineTypes = g_new0(virQEMUCapsMachineType, src->nmachineTypes);
dst->nmachineTypes = src->nmachineTypes;
for (i = 0; i < src->nmachineTypes; i++) {
dst->machineTypes[i].name = g_strdup(src->machineTypes[i].name);
dst->machineTypes[i].alias = g_strdup(src->machineTypes[i].alias);
dst->machineTypes[i].defaultCPU = g_strdup(src->machineTypes[i].defaultCPU);
dst->machineTypes[i].maxCpus = src->machineTypes[i].maxCpus;
dst->machineTypes[i].hotplugCpus = src->machineTypes[i].hotplugCpus;
dst->machineTypes[i].qemuDefault = src->machineTypes[i].qemuDefault;
dst->machineTypes[i].numaMemSupported = src->machineTypes[i].numaMemSupported;
dst->machineTypes[i].defaultRAMid = g_strdup(src->machineTypes[i].defaultRAMid);
dst->machineTypes[i].deprecated = src->machineTypes[i].deprecated;
}
}
static int
virQEMUCapsAccelCopy(virQEMUCapsAccelPtr dst,
virQEMUCapsAccelPtr src)
{
virQEMUCapsAccelCopyMachineTypes(dst, src);
if (virQEMUCapsHostCPUDataCopy(&dst->hostCPU, &src->hostCPU) < 0)
return -1;
dst->cpuModels = qemuMonitorCPUDefsCopy(src->cpuModels);
return 0;
}
virQEMUCapsPtr virQEMUCapsNewCopy(virQEMUCapsPtr qemuCaps)
{
virQEMUCapsPtr ret = virQEMUCapsNewBinary(qemuCaps->binary);
size_t i;
if (!ret)
return NULL;
ret->invalidation = qemuCaps->invalidation;
ret->kvmSupportsNesting = qemuCaps->kvmSupportsNesting;
ret->kvmSupportsSecureGuest = qemuCaps->kvmSupportsSecureGuest;
ret->ctime = qemuCaps->ctime;
virBitmapFree(ret->flags);
ret->flags = virBitmapNewCopy(qemuCaps->flags);
ret->version = qemuCaps->version;
ret->kvmVersion = qemuCaps->kvmVersion;
ret->microcodeVersion = qemuCaps->microcodeVersion;
ret->hostCPUSignature = g_strdup(qemuCaps->hostCPUSignature);
ret->package = g_strdup(qemuCaps->package);
ret->kernelVersion = g_strdup(qemuCaps->kernelVersion);
ret->arch = qemuCaps->arch;
if (virQEMUCapsAccelCopy(&ret->kvm, &qemuCaps->kvm) < 0 ||
virQEMUCapsAccelCopy(&ret->tcg, &qemuCaps->tcg) < 0)
goto error;
ret->gicCapabilities = g_new0(virGICCapability, qemuCaps->ngicCapabilities);
ret->ngicCapabilities = qemuCaps->ngicCapabilities;
for (i = 0; i < qemuCaps->ngicCapabilities; i++)
ret->gicCapabilities[i] = qemuCaps->gicCapabilities[i];
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_SEV_GUEST) &&
virQEMUCapsSEVInfoCopy(&ret->sevCapabilities,
qemuCaps->sevCapabilities) < 0)
goto error;
return ret;
error:
virObjectUnref(ret);
return NULL;
}
static void
virQEMUCapsAccelClear(virQEMUCapsAccelPtr caps)
{
size_t i;
for (i = 0; i < caps->nmachineTypes; i++) {
VIR_FREE(caps->machineTypes[i].name);
VIR_FREE(caps->machineTypes[i].alias);
VIR_FREE(caps->machineTypes[i].defaultCPU);
VIR_FREE(caps->machineTypes[i].defaultRAMid);
}
VIR_FREE(caps->machineTypes);
virQEMUCapsHostCPUDataClear(&caps->hostCPU);
qemuMonitorCPUDefsFree(caps->cpuModels);
}
void virQEMUCapsDispose(void *obj)
{
virQEMUCapsPtr qemuCaps = obj;
virBitmapFree(qemuCaps->flags);
g_free(qemuCaps->package);
g_free(qemuCaps->kernelVersion);
g_free(qemuCaps->binary);
g_free(qemuCaps->hostCPUSignature);
g_free(qemuCaps->gicCapabilities);
virSEVCapabilitiesFree(qemuCaps->sevCapabilities);
virQEMUCapsAccelClear(&qemuCaps->kvm);
virQEMUCapsAccelClear(&qemuCaps->tcg);
}
void
virQEMUCapsSet(virQEMUCapsPtr qemuCaps,
virQEMUCapsFlags flag)
{
ignore_value(virBitmapSetBit(qemuCaps->flags, flag));
}
void
virQEMUCapsSetList(virQEMUCapsPtr qemuCaps, ...)
{
va_list list;
int flag;
va_start(list, qemuCaps);
while ((flag = va_arg(list, int)) < QEMU_CAPS_LAST)
virQEMUCapsSet(qemuCaps, flag);
va_end(list);
}
void
virQEMUCapsClear(virQEMUCapsPtr qemuCaps,
virQEMUCapsFlags flag)
{
ignore_value(virBitmapClearBit(qemuCaps->flags, flag));
}
bool
virQEMUCapsGet(virQEMUCapsPtr qemuCaps,
virQEMUCapsFlags flag)
{
return qemuCaps && virBitmapIsBitSet(qemuCaps->flags, flag);
}
bool virQEMUCapsHasPCIMultiBus(virQEMUCapsPtr qemuCaps,
const virDomainDef *def)
{
/* x86_64 and i686 support PCI-multibus on all machine types
* since forever */
if (ARCH_IS_X86(def->os.arch))
return true;
if (def->os.arch == VIR_ARCH_PPC ||
ARCH_IS_PPC64(def->os.arch)) {
/*
* Usage of pci.0 naming:
*
* ref405ep: no pci
* taihu: no pci
* bamboo: 1.1.0 (<= 1.5.0, so basically forever)
* mac99: 2.0.0
* g3beige: 2.0.0
* prep: 1.4.0 (<= 1.5.0, so basically forever)
* pseries: 2.0.0
* mpc8544ds: forever
* virtex-m507: no pci
* ppce500: 1.6.0
*/
/* We do not store the qemu version in domain status XML.
* Hope the user is using a QEMU new enough to use 'pci.0',
* otherwise the results of this function will be wrong
* for domains already running at the time of daemon
* restart */
if (qemuCaps->version == 0)
return true;
if (qemuCaps->version >= 2000000)
return true;
if (qemuCaps->version >= 1006000 &&
STREQ(def->os.machine, "ppce500"))
return true;
if (STREQ(def->os.machine, "bamboo") ||
STREQ(def->os.machine, "mpc8544ds") ||
STREQ(def->os.machine, "prep")) {
return true;
}
return false;
}
/* S390 supports PCI-multibus. */
if (ARCH_IS_S390(def->os.arch))
return true;
/* If the virt machine, both on ARM and RISC-V, supports PCI,
* then it also supports multibus */
if (qemuDomainIsARMVirt(def) ||
qemuDomainIsRISCVVirt(def)) {
return true;
}
return false;
}
const char *virQEMUCapsGetBinary(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->binary;
}
void
virQEMUCapsSetArch(virQEMUCapsPtr qemuCaps,
virArch arch)
{
qemuCaps->arch = arch;
}
virArch virQEMUCapsGetArch(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->arch;
}
unsigned int virQEMUCapsGetVersion(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->version;
}
unsigned int virQEMUCapsGetKVMVersion(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->kvmVersion;
}
const char *virQEMUCapsGetPackage(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->package;
}
int
virQEMUCapsAddCPUDefinitions(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
const char **name,
size_t count,
virDomainCapsCPUUsable usable)
{
size_t i;
size_t start;
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, type);
qemuMonitorCPUDefsPtr defs = accel->cpuModels;
if (defs) {
start = defs->ncpus;
if (VIR_EXPAND_N(defs->cpus, defs->ncpus, count) < 0)
return -1;
} else {
start = 0;
if (!(defs = qemuMonitorCPUDefsNew(count)))
return -1;
accel->cpuModels = defs;
}
for (i = 0; i < count; i++) {
qemuMonitorCPUDefInfoPtr cpu = defs->cpus + start + i;
cpu->usable = usable;
cpu->name = g_strdup(name[i]);
}
return 0;
}
static virDomainCapsCPUModelsPtr
virQEMUCapsCPUDefsToModels(qemuMonitorCPUDefsPtr defs,
const char **modelAllowed,
const char **modelForbidden)
{
g_autoptr(virDomainCapsCPUModels) cpuModels = NULL;
size_t i;
if (!(cpuModels = virDomainCapsCPUModelsNew(defs->ncpus)))
return NULL;
for (i = 0; i < defs->ncpus; i++) {
qemuMonitorCPUDefInfoPtr cpu = defs->cpus + i;
if (modelAllowed && !g_strv_contains(modelAllowed, cpu->name))
continue;
if (modelForbidden && g_strv_contains(modelForbidden, cpu->name))
continue;
if (virDomainCapsCPUModelsAdd(cpuModels, cpu->name, cpu->usable,
cpu->blockers, cpu->deprecated) < 0)
return NULL;
}
return g_steal_pointer(&cpuModels);
}
virDomainCapsCPUModelsPtr
virQEMUCapsGetCPUModels(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
const char **modelAllowed,
const char **modelForbidden)
{
qemuMonitorCPUDefsPtr defs;
if (!(defs = virQEMUCapsGetAccel(qemuCaps, type)->cpuModels))
return NULL;
return virQEMUCapsCPUDefsToModels(defs, modelAllowed, modelForbidden);
}
virCPUDefPtr
virQEMUCapsGetHostModel(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
virQEMUCapsHostCPUType cpuType)
{
virQEMUCapsHostCPUDataPtr cpuData;
cpuData = &virQEMUCapsGetAccel(qemuCaps, type)->hostCPU;
switch (cpuType) {
case VIR_QEMU_CAPS_HOST_CPU_REPORTED:
return cpuData->reported;
case VIR_QEMU_CAPS_HOST_CPU_MIGRATABLE:
return cpuData->migratable;
case VIR_QEMU_CAPS_HOST_CPU_FULL:
/* 'full' is non-NULL only if we have data from both QEMU and
* virCPUGetHost */
return cpuData->full ? cpuData->full : cpuData->reported;
}
return NULL;
}
static void
virQEMUCapsSetHostModel(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
virCPUDefPtr reported,
virCPUDefPtr migratable,
virCPUDefPtr full)
{
virQEMUCapsHostCPUDataPtr cpuData;
cpuData = &virQEMUCapsGetAccel(qemuCaps, type)->hostCPU;
cpuData->reported = reported;
cpuData->migratable = migratable;
cpuData->full = full;
}
bool
virQEMUCapsIsArchSupported(virQEMUCapsPtr qemuCaps,
virArch arch)
{
if (arch == qemuCaps->arch)
return true;
if (qemuCaps->arch == VIR_ARCH_X86_64 && arch == VIR_ARCH_I686)
return true;
if (qemuCaps->arch == VIR_ARCH_AARCH64 && arch == VIR_ARCH_ARMV7L)
return true;
if (qemuCaps->arch == VIR_ARCH_ARMV7L && arch == VIR_ARCH_ARMV6L)
return true;
if (qemuCaps->arch == VIR_ARCH_PPC64 && arch == VIR_ARCH_PPC64LE)
return true;
return false;
}
bool
virQEMUCapsIsVirtTypeSupported(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType)
{
if (virtType == VIR_DOMAIN_VIRT_QEMU &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_TCG))
return true;
if (virtType == VIR_DOMAIN_VIRT_KVM &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM))
return true;
return false;
}
const char *s390HostPassthroughOnlyMachines[] = {
"s390-ccw-virtio-2.4",
"s390-ccw-virtio-2.5",
"s390-ccw-virtio-2.6",
"s390-ccw-virtio-2.7",
NULL
};
bool
virQEMUCapsIsCPUModeSupported(virQEMUCapsPtr qemuCaps,
virArch hostarch,
virDomainVirtType type,
virCPUMode mode,
const char *machineType)
{
qemuMonitorCPUDefsPtr cpus;
/* CPU models (except for "host") are not supported by QEMU for on s390
* KVM domains with old machine types regardless on QEMU version. */
if (ARCH_IS_S390(qemuCaps->arch) &&
type == VIR_DOMAIN_VIRT_KVM &&
mode != VIR_CPU_MODE_HOST_PASSTHROUGH &&
machineType &&
g_strv_contains(s390HostPassthroughOnlyMachines, machineType)) {
return false;
}
switch (mode) {
case VIR_CPU_MODE_HOST_PASSTHROUGH:
return type == VIR_DOMAIN_VIRT_KVM &&
virQEMUCapsGuestIsNative(hostarch, qemuCaps->arch);
case VIR_CPU_MODE_HOST_MODEL:
return !!virQEMUCapsGetHostModel(qemuCaps, type,
VIR_QEMU_CAPS_HOST_CPU_REPORTED);
case VIR_CPU_MODE_CUSTOM:
cpus = virQEMUCapsGetAccel(qemuCaps, type)->cpuModels;
return cpus && cpus->ncpus > 0;
case VIR_CPU_MODE_MAXIMUM:
return virQEMUCapsGet(qemuCaps, QEMU_CAPS_CPU_MAX);
case VIR_CPU_MODE_LAST:
break;
}
return false;
}
/**
* virQEMUCapsGetCanonicalMachine:
* @qemuCaps: qemu capabilities object
* @name: machine name
*
* Resolves aliased machine names to the actual machine name. If qemuCaps isn't
* present @name is returned.
*/
const char *
virQEMUCapsGetCanonicalMachine(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
const char *name)
{
virQEMUCapsAccelPtr accel;
size_t i;
if (!name || !qemuCaps)
return name;
accel = virQEMUCapsGetAccel(qemuCaps, virtType);
for (i = 0; i < accel->nmachineTypes; i++) {
if (!accel->machineTypes[i].alias)
continue;
if (STREQ(accel->machineTypes[i].alias, name))
return accel->machineTypes[i].name;
}
return name;
}
int
virQEMUCapsGetMachineMaxCpus(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
const char *name)
{
virQEMUCapsAccelPtr accel;
size_t i;
if (!name)
return 0;
accel = virQEMUCapsGetAccel(qemuCaps, virtType);
for (i = 0; i < accel->nmachineTypes; i++) {
if (!accel->machineTypes[i].maxCpus)
continue;
if (STREQ(accel->machineTypes[i].name, name))
return accel->machineTypes[i].maxCpus;
}
return 0;
}
bool
virQEMUCapsGetMachineHotplugCpus(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
const char *name)
{
virQEMUCapsAccelPtr accel;
size_t i;
accel = virQEMUCapsGetAccel(qemuCaps, virtType);
for (i = 0; i < accel->nmachineTypes; i++) {
if (STREQ_NULLABLE(accel->machineTypes[i].name, name))
return accel->machineTypes[i].hotplugCpus;
}
return false;
}
const char *
virQEMUCapsGetMachineDefaultCPU(virQEMUCapsPtr qemuCaps,
const char *name,
virDomainVirtType type)
{
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, type);
qemuMonitorCPUDefsPtr defs = accel->cpuModels;
const char *cpuType = NULL;
size_t i;
if (!name || !defs)
return NULL;
for (i = 0; i < accel->nmachineTypes; i++) {
if (STREQ(accel->machineTypes[i].name, name)) {
cpuType = accel->machineTypes[i].defaultCPU;
break;
}
}
if (!cpuType)
return NULL;
for (i = 0; i < defs->ncpus; i++) {
if (STREQ_NULLABLE(defs->cpus[i].type, cpuType))
return defs->cpus[i].name;
}
return NULL;
}
bool
virQEMUCapsIsCPUDeprecated(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
const char *model)
{
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, type);
qemuMonitorCPUDefsPtr defs = accel->cpuModels;
size_t i;
for (i = 0; i < defs->ncpus; i++) {
if (STREQ_NULLABLE(defs->cpus[i].name, model))
return defs->cpus[i].deprecated;
}
return false;
}
bool
virQEMUCapsIsMachineDeprecated(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
const char *machine)
{
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, type);
size_t i;
for (i = 0; i < accel->nmachineTypes; i++) {
if (STREQ_NULLABLE(accel->machineTypes[i].name, machine))
return accel->machineTypes[i].deprecated;
}
return false;
}
bool
virQEMUCapsGetMachineNumaMemSupported(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
const char *name)
{
virQEMUCapsAccelPtr accel;
size_t i;
accel = virQEMUCapsGetAccel(qemuCaps, virtType);
for (i = 0; i < accel->nmachineTypes; i++) {
if (STREQ(accel->machineTypes[i].name, name))
return accel->machineTypes[i].numaMemSupported;
}
return false;
}
const char *
virQEMUCapsGetMachineDefaultRAMid(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
const char *name)
{
virQEMUCapsAccelPtr accel;
size_t i;
accel = virQEMUCapsGetAccel(qemuCaps, virtType);
for (i = 0; i < accel->nmachineTypes; i++) {
if (STREQ(accel->machineTypes[i].name, name))
return accel->machineTypes[i].defaultRAMid;
}
return NULL;
}
/**
* virQEMUCapsSetGICCapabilities:
* @qemuCaps: QEMU capabilities
* @capabilities: GIC capabilities
* @ncapabilities: number of GIC capabilities
*
* Set the GIC capabilities for @qemuCaps.
*
* The ownership of @capabilities is taken away from the caller, ie. this
* function will not make a copy of @capabilities, so releasing that memory
* after it's been called is a bug.
*/
void
virQEMUCapsSetGICCapabilities(virQEMUCapsPtr qemuCaps,
virGICCapability *capabilities,
size_t ncapabilities)
{
VIR_FREE(qemuCaps->gicCapabilities);
qemuCaps->gicCapabilities = capabilities;
qemuCaps->ngicCapabilities = ncapabilities;
}
virSEVCapabilityPtr
virQEMUCapsGetSEVCapabilities(virQEMUCapsPtr qemuCaps)
{
return qemuCaps->sevCapabilities;
}
static int
virQEMUCapsProbeQMPCommands(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
char **commands = NULL;
int ncommands;
if ((ncommands = qemuMonitorGetCommands(mon, &commands)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
G_N_ELEMENTS(virQEMUCapsCommands),
virQEMUCapsCommands,
ncommands, commands);
virStringListFreeCount(commands, ncommands);
/* Probe for active commit of qemu 2.1. We don't need to query directly
* if we have QMP schema support */
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_QMP_SCHEMA) &&
qemuMonitorSupportsActiveCommit(mon))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_ACTIVE_COMMIT);
return 0;
}
static int
virQEMUCapsProbeQMPEvents(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
char **events = NULL;
int nevents;
/* we can probe events also from the QMP schema so we can skip this here */
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_QMP_SCHEMA))
return 0;
if ((nevents = qemuMonitorGetEvents(mon, &events)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
G_N_ELEMENTS(virQEMUCapsEvents),
virQEMUCapsEvents,
nevents, events);
virStringListFreeCount(events, nevents);
return 0;
}
static int
virQEMUCapsProbeQMPObjectTypes(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
int nvalues;
char **values;
if ((nvalues = qemuMonitorGetObjectTypes(mon, &values)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
G_N_ELEMENTS(virQEMUCapsObjectTypes),
virQEMUCapsObjectTypes,
nvalues, values);
virStringListFreeCount(values, nvalues);
return 0;
}
static int
virQEMUCapsProbeQMPDeviceProperties(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
size_t i;
for (i = 0; i < G_N_ELEMENTS(virQEMUCapsDeviceProps); i++) {
virQEMUCapsDeviceTypeProps *device = virQEMUCapsDeviceProps + i;
g_autoptr(GHashTable) qemuprops = NULL;
size_t j;
if (device->capsCondition >= 0 &&
!virQEMUCapsGet(qemuCaps, device->capsCondition))
continue;
if (!(qemuprops = qemuMonitorGetDeviceProps(mon, device->type)))
return -1;
for (j = 0; j < device->nprops; j++) {
virJSONValuePtr entry = virHashLookup(qemuprops, device->props[j].value);
if (!entry)
continue;
virQEMUCapsSet(qemuCaps, device->props[j].flag);
if (device->props[j].cb &&
device->props[j].cb(entry, qemuCaps) < 0)
return -1;
}
}
return 0;
}
static int
virQEMUCapsProbeQMPObjectProperties(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
size_t i;
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_QOM_LIST_PROPERTIES))
return 0;
for (i = 0; i < G_N_ELEMENTS(virQEMUCapsObjectProps); i++) {
virQEMUCapsObjectTypeProps *props = virQEMUCapsObjectProps + i;
g_auto(GStrv) values = NULL;
int nvalues;
if (props->capsCondition >= 0 &&
!virQEMUCapsGet(qemuCaps, props->capsCondition))
continue;
if ((nvalues = qemuMonitorGetObjectProps(mon, props->type, &values)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
props->nprops,
props->props,
nvalues, values);
}
return 0;
}
/* Historically QEMU x86 targets defaulted to 'pc' machine type but
* in future x86_64 might switch to 'q35'. Such a change is considered
* an ABI break from libvirt's POV. Other QEMU targets may not declare
* a default machine at all, causing libvirt to use the first reported
* machine in the list.
*
* Here we record a preferred default machine for all arches, so
* that we're not vulnerable to changes in QEMU defaults or machine
* list ordering.
*/
static const char *preferredMachines[] =
{
NULL, /* VIR_ARCH_NONE (not a real arch :) */
"clipper", /* VIR_ARCH_ALPHA */
"integratorcp", /* VIR_ARCH_ARMV6L */
"integratorcp", /* VIR_ARCH_ARMV7L */
"integratorcp", /* VIR_ARCH_ARMV7B */
"integratorcp", /* VIR_ARCH_AARCH64 */
"axis-dev88", /* VIR_ARCH_CRIS */
"pc", /* VIR_ARCH_I686 */
NULL, /* VIR_ARCH_ITANIUM (doesn't exist in QEMU any more) */
"lm32-evr", /* VIR_ARCH_LM32 */
"mcf5208evb", /* VIR_ARCH_M68K */
"petalogix-s3adsp1800", /* VIR_ARCH_MICROBLAZE */
"petalogix-s3adsp1800", /* VIR_ARCH_MICROBLAZEEL */
"malta", /* VIR_ARCH_MIPS */
"malta", /* VIR_ARCH_MIPSEL */
"malta", /* VIR_ARCH_MIPS64 */
"malta", /* VIR_ARCH_MIPS64EL */
"or1k-sim", /* VIR_ARCH_OR32 */
NULL, /* VIR_ARCH_PARISC (no QEMU impl) */
NULL, /* VIR_ARCH_PARISC64 (no QEMU impl) */
"g3beige", /* VIR_ARCH_PPC */
"g3beige", /* VIR_ARCH_PPCLE */
"pseries", /* VIR_ARCH_PPC64 */
"pseries", /* VIR_ARCH_PPC64LE */
"bamboo", /* VIR_ARCH_PPCEMB */
"spike_v1.10", /* VIR_ARCH_RISCV32 */
"spike_v1.10", /* VIR_ARCH_RISCV64 */
NULL, /* VIR_ARCH_S390 (no QEMU impl) */
"s390-ccw-virtio", /* VIR_ARCH_S390X */
"shix", /* VIR_ARCH_SH4 */
"shix", /* VIR_ARCH_SH4EB */
"SS-5", /* VIR_ARCH_SPARC */
"sun4u", /* VIR_ARCH_SPARC64 */
"puv3", /* VIR_ARCH_UNICORE32 */
"pc", /* VIR_ARCH_X86_64 */
"sim", /* VIR_ARCH_XTENSA */
"sim", /* VIR_ARCH_XTENSAEB */
};
G_STATIC_ASSERT(G_N_ELEMENTS(preferredMachines) == VIR_ARCH_LAST);
void
virQEMUCapsAddMachine(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
const char *name,
const char *alias,
const char *defaultCPU,
int maxCpus,
bool hotplugCpus,
bool isDefault,
bool numaMemSupported,
const char *defaultRAMid,
bool deprecated)
{
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, virtType);
virQEMUCapsMachineTypePtr mach;
accel->machineTypes = g_renew(virQEMUCapsMachineType,
accel->machineTypes,
++accel->nmachineTypes);
mach = &(accel->machineTypes[accel->nmachineTypes - 1]);
mach->alias = g_strdup(alias);
mach->name = g_strdup(name);
mach->defaultCPU = g_strdup(defaultCPU);
mach->maxCpus = maxCpus;
mach->hotplugCpus = hotplugCpus;
mach->qemuDefault = isDefault;
mach->numaMemSupported = numaMemSupported;
mach->defaultRAMid = g_strdup(defaultRAMid);
mach->deprecated = deprecated;
}
/**
* virQEMUCapsHasMachines:
* @qemuCaps: qemu capabilities object
*
* Returns true if @qemuCaps has at least one machine type defined. This is
* called by the test suite to figure out whether to populate fake machine types
* into the list.
*/
bool
virQEMUCapsHasMachines(virQEMUCapsPtr qemuCaps)
{
return !!qemuCaps->kvm.nmachineTypes || !!qemuCaps->tcg.nmachineTypes;
}
static int
virQEMUCapsProbeQMPMachineTypes(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
qemuMonitorPtr mon)
{
qemuMonitorMachineInfoPtr *machines = NULL;
int nmachines = 0;
size_t i;
ssize_t defIdx = -1;
ssize_t preferredIdx = -1;
const char *preferredMachine = preferredMachines[qemuCaps->arch];
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, virtType);
if ((nmachines = qemuMonitorGetMachines(mon, &machines)) < 0)
return -1;
for (i = 0; i < nmachines; i++) {
if (STREQ(machines[i]->name, "none"))
continue;
virQEMUCapsAddMachine(qemuCaps,
virtType,
machines[i]->name,
machines[i]->alias,
machines[i]->defaultCPU,
machines[i]->maxCpus,
machines[i]->hotplugCpus,
machines[i]->isDefault,
machines[i]->numaMemSupported,
machines[i]->defaultRAMid,
machines[i]->deprecated);
if (preferredMachine &&
(STREQ_NULLABLE(machines[i]->alias, preferredMachine) ||
STREQ(machines[i]->name, preferredMachine))) {
preferredIdx = accel->nmachineTypes - 1;
}
if (machines[i]->isDefault)
defIdx = accel->nmachineTypes - 1;
}
/*
* We'll prefer to use our own historical default machine
* to avoid mgmt apps seeing semantics changes when QEMU
* alters its defaults.
*
* Our preferred machine might have been compiled out of
* QEMU at build time though, so we still fallback to honouring
* QEMU's reported default in that case
*/
if (preferredIdx == -1)
preferredIdx = defIdx;
if (preferredIdx != -1)
virQEMUCapsSetDefaultMachine(accel, preferredIdx);
for (i = 0; i < nmachines; i++)
qemuMonitorMachineInfoFree(machines[i]);
VIR_FREE(machines);
return 0;
}
bool
virQEMUCapsIsMachineSupported(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
const char *canonical_machine)
{
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, virtType);
size_t i;
for (i = 0; i < accel->nmachineTypes; i++) {
if (STREQ(canonical_machine, accel->machineTypes[i].name))
return true;
}
return false;
}
static int
virQEMUCapsProbeQMPMachineProps(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
qemuMonitorPtr mon)
{
char **values;
int nvalues;
size_t i;
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_QOM_LIST_PROPERTIES))
return 0;
for (i = 0; i < G_N_ELEMENTS(virQEMUCapsMachineProps); i++) {
virQEMUCapsObjectTypeProps props = virQEMUCapsMachineProps[i];
const char *canon = virQEMUCapsGetCanonicalMachine(qemuCaps, virtType, props.type);
g_autofree char *type = NULL;
if (!virQEMUCapsIsMachineSupported(qemuCaps, virtType, canon))
continue;
/* The QOM type for machine types is the machine type name
* followed by the -machine suffix */
type = g_strdup_printf("%s-machine", canon);
if ((nvalues = qemuMonitorGetObjectProps(mon, type, &values)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
props.nprops,
props.props,
nvalues, values);
virStringListFreeCount(values, nvalues);
}
return 0;
}
static int
virQEMUCapsFetchCPUDefinitions(qemuMonitorPtr mon,
virArch arch,
qemuMonitorCPUDefsPtr *cpuDefs)
{
g_autoptr(qemuMonitorCPUDefs) defs = NULL;
size_t i;
*cpuDefs = NULL;
if (qemuMonitorGetCPUDefinitions(mon, &defs) < 0)
return -1;
if (!defs)
return 0;
/* QEMU 2.11 for Power renamed all CPU models to lower case, we need to
* translate them back to libvirt's upper case model names. */
if (ARCH_IS_PPC64(arch)) {
g_auto(GStrv) libvirtModels = NULL;
char **name;
if (virCPUGetModels(arch, &libvirtModels) < 0)
return -1;
for (name = libvirtModels; name && *name; name++) {
for (i = 0; i < defs->ncpus; i++) {
if (STRCASENEQ(defs->cpus[i].name, *name))
continue;
VIR_FREE(defs->cpus[i].name);
defs->cpus[i].name = g_strdup(*name);
}
}
}
*cpuDefs = g_steal_pointer(&defs);
return 0;
}
int
virQEMUCapsFetchCPUModels(qemuMonitorPtr mon,
virArch arch,
virDomainCapsCPUModelsPtr *cpuModels)
{
g_autoptr(qemuMonitorCPUDefs) defs = NULL;
*cpuModels = NULL;
if (virQEMUCapsFetchCPUDefinitions(mon, arch, &defs) < 0)
return -1;
if (defs && !(*cpuModels = virQEMUCapsCPUDefsToModels(defs, NULL, NULL)))
return -1;
return 0;
}
static int
virQEMUCapsProbeQMPCPUDefinitions(virQEMUCapsPtr qemuCaps,
virQEMUCapsAccelPtr accel,
qemuMonitorPtr mon)
{
qemuMonitorCPUDefsPtr defs;
size_t i;
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_CPU_DEFINITIONS))
return 0;
if (virQEMUCapsFetchCPUDefinitions(mon, qemuCaps->arch, &accel->cpuModels) < 0)
return -1;
defs = accel->cpuModels;
for (i = 0; i < defs->ncpus; i++) {
if (STREQ_NULLABLE(defs->cpus[i].name, "max")) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CPU_MAX);
break;
}
}
return 0;
}
int
virQEMUCapsProbeCPUDefinitionsTest(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
return virQEMUCapsProbeQMPCPUDefinitions(qemuCaps, &qemuCaps->kvm, mon);
}
static int
virQEMUCapsProbeQMPHostCPU(virQEMUCapsPtr qemuCaps,
virQEMUCapsAccelPtr accel,
qemuMonitorPtr mon,
virDomainVirtType virtType)
{
const char *model = virtType == VIR_DOMAIN_VIRT_KVM ? "host" : "max";
qemuMonitorCPUModelInfoPtr modelInfo = NULL;
qemuMonitorCPUModelInfoPtr nonMigratable = NULL;
GHashTable *hash = NULL;
virCPUDefPtr cpu;
qemuMonitorCPUModelExpansionType type;
bool fail_no_props = true;
int ret = -1;
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_CPU_MODEL_EXPANSION))
return 0;
cpu = virCPUDefNew();
cpu->model = g_strdup(model);
/* Some x86_64 features defined in src/cpu_map/ use spelling which differ
* from the one preferred by QEMU. Static expansion would give us only the
* preferred spelling. With new QEMU we always use the QEMU's canonical
* names of all features and translate between them and our names. But for
* older version of QEMU we need to do a full expansion on the result of
* the initial static expansion to get all variants of feature names.
*/
if (ARCH_IS_X86(qemuCaps->arch) &&
!virQEMUCapsGet(qemuCaps, QEMU_CAPS_CANONICAL_CPU_FEATURES)) {
type = QEMU_MONITOR_CPU_MODEL_EXPANSION_STATIC_FULL;
} else if (ARCH_IS_ARM(qemuCaps->arch)) {
type = QEMU_MONITOR_CPU_MODEL_EXPANSION_FULL;
} else {
type = QEMU_MONITOR_CPU_MODEL_EXPANSION_STATIC;
}
/* Older s390 models do not report a feature set */
if (ARCH_IS_S390(qemuCaps->arch))
fail_no_props = false;
if (qemuMonitorGetCPUModelExpansion(mon, type, cpu, true, fail_no_props,
&modelInfo) < 0)
goto cleanup;
/* Try to check migratability of each feature. */
if (modelInfo &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_CPU_MODEL_EXPANSION_MIGRATABLE) &&
qemuMonitorGetCPUModelExpansion(mon, type, cpu, false, fail_no_props,
&nonMigratable) < 0)
goto cleanup;
if (nonMigratable) {
qemuMonitorCPUPropertyPtr prop;
qemuMonitorCPUPropertyPtr nmProp;
size_t i;
if (!(hash = virHashNew(NULL)))
goto cleanup;
for (i = 0; i < modelInfo->nprops; i++) {
prop = modelInfo->props + i;
if (virHashAddEntry(hash, prop->name, prop) < 0)
goto cleanup;
}
for (i = 0; i < nonMigratable->nprops; i++) {
nmProp = nonMigratable->props + i;
if (!(prop = virHashLookup(hash, nmProp->name)) ||
prop->type != QEMU_MONITOR_CPU_PROPERTY_BOOLEAN ||
prop->type != nmProp->type)
continue;
if (prop->value.boolean) {
prop->migratable = VIR_TRISTATE_BOOL_YES;
} else if (nmProp->value.boolean) {
prop->value.boolean = true;
prop->migratable = VIR_TRISTATE_BOOL_NO;
}
}
modelInfo->migratability = true;
}
accel->hostCPU.info = g_steal_pointer(&modelInfo);
ret = 0;
cleanup:
virHashFree(hash);
qemuMonitorCPUModelInfoFree(nonMigratable);
qemuMonitorCPUModelInfoFree(modelInfo);
virCPUDefFree(cpu);
return ret;
}
/**
* Get NULL terminated list of features supported by QEMU.
*
* Returns -1 on error,
* 0 on success (@features will be NULL if QEMU does not support this),
* 1 when @features is filled in, but migratability info is not available.
*/
int
virQEMUCapsGetCPUFeatures(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
bool migratable,
char ***features)
{
qemuMonitorCPUModelInfoPtr modelInfo;
char **list;
size_t i;
size_t n;
int ret = -1;
*features = NULL;
modelInfo = virQEMUCapsGetCPUModelInfo(qemuCaps, virtType);
if (!modelInfo)
return 0;
list = g_new0(char *, modelInfo->nprops + 1);
n = 0;
for (i = 0; i < modelInfo->nprops; i++) {
qemuMonitorCPUPropertyPtr prop = modelInfo->props + i;
if (migratable && prop->migratable == VIR_TRISTATE_BOOL_NO)
continue;
list[n++] = g_strdup(virQEMUCapsCPUFeatureFromQEMU(qemuCaps, prop->name));
}
*features = g_steal_pointer(&list);
if (migratable && !modelInfo->migratability)
ret = 1;
else
ret = 0;
g_strfreev(list);
return ret;
}
struct tpmTypeToCaps {
int type;
virQEMUCapsFlags caps;
};
static const struct tpmTypeToCaps virQEMUCapsTPMTypesToCaps[] = {
{
.type = VIR_DOMAIN_TPM_TYPE_PASSTHROUGH,
.caps = QEMU_CAPS_DEVICE_TPM_PASSTHROUGH,
},
{
.type = VIR_DOMAIN_TPM_TYPE_EMULATOR,
.caps = QEMU_CAPS_DEVICE_TPM_EMULATOR,
},
};
const struct tpmTypeToCaps virQEMUCapsTPMModelsToCaps[] = {
{
.type = VIR_DOMAIN_TPM_MODEL_TIS,
.caps = QEMU_CAPS_DEVICE_TPM_TIS,
},
{
.type = VIR_DOMAIN_TPM_MODEL_CRB,
.caps = QEMU_CAPS_DEVICE_TPM_CRB,
},
{
.type = VIR_DOMAIN_TPM_MODEL_SPAPR,
.caps = QEMU_CAPS_DEVICE_TPM_SPAPR,
},
};
static int
virQEMUCapsProbeQMPTPM(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
int nentries;
size_t i;
char **entries = NULL;
if ((nentries = qemuMonitorGetTPMModels(mon, &entries)) < 0)
return -1;
if (nentries > 0) {
for (i = 0; i < G_N_ELEMENTS(virQEMUCapsTPMModelsToCaps); i++) {
const char *needle = virDomainTPMModelTypeToString(
virQEMUCapsTPMModelsToCaps[i].type);
if (g_strv_contains((const char **)entries, needle))
virQEMUCapsSet(qemuCaps,
virQEMUCapsTPMModelsToCaps[i].caps);
}
}
g_strfreev(entries);
if ((nentries = qemuMonitorGetTPMTypes(mon, &entries)) < 0)
return -1;
if (nentries > 0) {
for (i = 0; i < G_N_ELEMENTS(virQEMUCapsTPMTypesToCaps); i++) {
const char *needle = virDomainTPMBackendTypeToString(
virQEMUCapsTPMTypesToCaps[i].type);
if (g_strv_contains((const char **)entries, needle))
virQEMUCapsSet(qemuCaps, virQEMUCapsTPMTypesToCaps[i].caps);
}
}
g_strfreev(entries);
return 0;
}
static int
virQEMUCapsProbeQMPKVMState(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
bool enabled = false;
bool present = false;
if (qemuMonitorGetKVMState(mon, &enabled, &present) < 0)
return -1;
if (present && enabled)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_KVM);
return 0;
}
struct virQEMUCapsCommandLineProps {
const char *option;
const char *param;
int flag;
};
static struct virQEMUCapsCommandLineProps virQEMUCapsCommandLine[] = {
{ "machine", "mem-merge", QEMU_CAPS_MEM_MERGE },
{ "machine", "vmport", QEMU_CAPS_MACHINE_VMPORT_OPT },
{ "drive", "discard", QEMU_CAPS_DRIVE_DISCARD },
{ "drive", "detect-zeroes", QEMU_CAPS_DRIVE_DETECT_ZEROES },
{ "boot-opts", "strict", QEMU_CAPS_BOOT_STRICT },
{ "boot-opts", "reboot-timeout", QEMU_CAPS_REBOOT_TIMEOUT },
{ "boot-opts", "splash-time", QEMU_CAPS_SPLASH_TIMEOUT },
{ "spice", "disable-agent-file-xfer", QEMU_CAPS_SPICE_FILE_XFER_DISABLE },
{ "msg", "timestamp", QEMU_CAPS_MSG_TIMESTAMP },
{ "numa", NULL, QEMU_CAPS_NUMA },
{ "drive", "throttling.bps-total-max", QEMU_CAPS_DRIVE_IOTUNE_MAX},
{ "machine", "aes-key-wrap", QEMU_CAPS_AES_KEY_WRAP },
{ "machine", "dea-key-wrap", QEMU_CAPS_DEA_KEY_WRAP },
{ "chardev", "append", QEMU_CAPS_CHARDEV_FILE_APPEND },
{ "spice", "gl", QEMU_CAPS_SPICE_GL },
{ "chardev", "logfile", QEMU_CAPS_CHARDEV_LOGFILE },
{ "name", "debug-threads", QEMU_CAPS_NAME_DEBUG_THREADS },
{ "name", "guest", QEMU_CAPS_NAME_GUEST },
{ "spice", "unix", QEMU_CAPS_SPICE_UNIX },
{ "drive", "throttling.bps-total-max-length", QEMU_CAPS_DRIVE_IOTUNE_MAX_LENGTH },
{ "drive", "throttling.group", QEMU_CAPS_DRIVE_IOTUNE_GROUP },
{ "spice", "rendernode", QEMU_CAPS_SPICE_RENDERNODE },
{ "machine", "kernel_irqchip", QEMU_CAPS_MACHINE_KERNEL_IRQCHIP },
{ "machine", "loadparm", QEMU_CAPS_LOADPARM },
{ "vnc", "vnc", QEMU_CAPS_VNC_MULTI_SERVERS },
{ "chardev", "reconnect", QEMU_CAPS_CHARDEV_RECONNECT },
{ "sandbox", "enable", QEMU_CAPS_SECCOMP_SANDBOX },
{ "sandbox", "elevateprivileges", QEMU_CAPS_SECCOMP_BLACKLIST },
{ "chardev", "fd", QEMU_CAPS_CHARDEV_FD_PASS },
{ "overcommit", NULL, QEMU_CAPS_OVERCOMMIT },
{ "smp-opts", "dies", QEMU_CAPS_SMP_DIES },
{ "fsdev", "multidevs", QEMU_CAPS_FSDEV_MULTIDEVS },
{ "fw_cfg", "file", QEMU_CAPS_FW_CFG },
{ "fsdev", "fmode", QEMU_CAPS_FSDEV_CREATEMODE }, /* Could have also checked fsdev->dmode */
{ "vnc", "display", QEMU_CAPS_VNC_OPTS },
{ "vnc", "power-control", QEMU_CAPS_VNC_POWER_CONTROL },
{ "vnc", "audiodev", QEMU_CAPS_AUDIODEV },
};
static int
virQEMUCapsProbeQMPCommandLine(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
g_autoptr(GHashTable) options = NULL;
size_t i;
if (!(options = qemuMonitorGetCommandLineOptions(mon)))
return -1;
for (i = 0; i < G_N_ELEMENTS(virQEMUCapsCommandLine); i++) {
virJSONValuePtr option = g_hash_table_lookup(options, virQEMUCapsCommandLine[i].option);
size_t j;
if (!option)
continue;
/* not looking for a specific argument */
if (!virQEMUCapsCommandLine[i].param) {
virQEMUCapsSet(qemuCaps, virQEMUCapsCommandLine[i].flag);
continue;
}
for (j = 0; j < virJSONValueArraySize(option); j++) {
virJSONValuePtr param = virJSONValueArrayGet(option, j);
const char *paramname = virJSONValueObjectGetString(param, "name");
if (STREQ_NULLABLE(virQEMUCapsCommandLine[i].param, paramname))
virQEMUCapsSet(qemuCaps, virQEMUCapsCommandLine[i].flag);
}
}
return 0;
}
static int
virQEMUCapsProbeQMPMigrationCapabilities(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
char **caps = NULL;
int ncaps;
if ((ncaps = qemuMonitorGetMigrationCapabilities(mon, &caps)) < 0)
return -1;
virQEMUCapsProcessStringFlags(qemuCaps,
G_N_ELEMENTS(virQEMUCapsMigration),
virQEMUCapsMigration,
ncaps, caps);
virStringListFreeCount(caps, ncaps);
return 0;
}
/**
* virQEMUCapsProbeQMPGICCapabilities:
* @qemuCaps: QEMU binary capabilities
* @mon: QEMU monitor
*
* Use @mon to obtain information about the GIC capabilities for the
* corresponding QEMU binary, and store them in @qemuCaps.
*
* Returns: 0 on success, <0 on failure
*/
static int
virQEMUCapsProbeQMPGICCapabilities(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
virGICCapability *caps = NULL;
int ncaps;
if (!(qemuCaps->arch == VIR_ARCH_AARCH64 ||
qemuCaps->arch == VIR_ARCH_ARMV6L ||
qemuCaps->arch == VIR_ARCH_ARMV7L))
return 0;
if ((ncaps = qemuMonitorGetGICCapabilities(mon, &caps)) < 0)
return -1;
virQEMUCapsSetGICCapabilities(qemuCaps, caps, ncaps);
return 0;
}
static int
virQEMUCapsProbeQMPSEVCapabilities(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
int rc = -1;
virSEVCapability *caps = NULL;
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_SEV_GUEST))
return 0;
if ((rc = qemuMonitorGetSEVCapabilities(mon, &caps)) < 0)
return -1;
/* SEV isn't actually supported */
if (rc == 0) {
virQEMUCapsClear(qemuCaps, QEMU_CAPS_SEV_GUEST);
return 0;
}
virSEVCapabilitiesFree(qemuCaps->sevCapabilities);
qemuCaps->sevCapabilities = caps;
return 0;
}
/*
* Filter for features which should never be passed to QEMU. Either because
* QEMU never supported them or they were dropped as they never did anything
* useful.
*/
bool
virQEMUCapsCPUFilterFeatures(const char *name,
virCPUFeaturePolicy policy G_GNUC_UNUSED,
void *opaque)
{
virArch *arch = opaque;
if (!ARCH_IS_X86(*arch))
return true;
if (STREQ(name, "cmt") ||
STREQ(name, "mbm_total") ||
STREQ(name, "mbm_local") ||
STREQ(name, "osxsave") ||
STREQ(name, "ospke"))
return false;
return true;
}
typedef struct _virQEMUCapsCPUFeatureTranslationTable virQEMUCapsCPUFeatureTranslationTable;
typedef virQEMUCapsCPUFeatureTranslationTable *virQEMUCapsCPUFeatureTranslationTablePtr;
struct _virQEMUCapsCPUFeatureTranslationTable {
const char *libvirt;
const char *qemu;
};
virQEMUCapsCPUFeatureTranslationTable virQEMUCapsCPUFeaturesX86[] = {
{"cmp_legacy", "cmp-legacy"},
{"ds_cpl", "ds-cpl"},
{"fxsr_opt", "fxsr-opt"},
{"kvm_pv_eoi", "kvm-pv-eoi"},
{"kvm_pv_unhalt", "kvm-pv-unhalt"},
{"lahf_lm", "lahf-lm"},
{"nodeid_msr", "nodeid-msr"},
{"pclmuldq", "pclmulqdq"},
{"perfctr_core", "perfctr-core"},
{"perfctr_nb", "perfctr-nb"},
{"tsc_adjust", "tsc-adjust"},
{NULL, NULL}
};
static const char *
virQEMUCapsCPUFeatureTranslate(virQEMUCapsPtr qemuCaps,
const char *feature,
bool reversed)
{
virQEMUCapsCPUFeatureTranslationTablePtr table = NULL;
virQEMUCapsCPUFeatureTranslationTablePtr entry;
if (ARCH_IS_X86(qemuCaps->arch))
table = virQEMUCapsCPUFeaturesX86;
if (!table ||
!feature ||
!virQEMUCapsGet(qemuCaps, QEMU_CAPS_CANONICAL_CPU_FEATURES))
return feature;
for (entry = table; entry->libvirt; entry++) {
const char *key = reversed ? entry->qemu : entry->libvirt;
if (STREQ(feature, key))
return reversed ? entry->libvirt : entry->qemu;
}
return feature;
}
const char *
virQEMUCapsCPUFeatureToQEMU(virQEMUCapsPtr qemuCaps,
const char *feature)
{
return virQEMUCapsCPUFeatureTranslate(qemuCaps, feature, false);
}
const char *
virQEMUCapsCPUFeatureFromQEMU(virQEMUCapsPtr qemuCaps,
const char *feature)
{
return virQEMUCapsCPUFeatureTranslate(qemuCaps, feature, true);
}
/**
* Returns 0 when host CPU model provided by QEMU was filled in qemuCaps,
* 1 when the caller should fall back to using virCapsPtr->host.cpu,
* 2 when cpu model info is not supported for this configuration,
* -1 on error.
*/
static int
virQEMUCapsInitCPUModelS390(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
qemuMonitorCPUModelInfoPtr modelInfo,
virCPUDefPtr cpu,
bool migratable)
{
size_t i;
if (!modelInfo) {
if (type == VIR_DOMAIN_VIRT_KVM) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("missing host CPU model info from QEMU "
"capabilities for binary %s"),
qemuCaps->binary);
return -1;
}
return 2;
}
cpu->model = g_strdup(modelInfo->name);
cpu->features = g_new0(virCPUFeatureDef, modelInfo->nprops);
cpu->nfeatures_max = modelInfo->nprops;
cpu->nfeatures = 0;
for (i = 0; i < modelInfo->nprops; i++) {
virCPUFeatureDefPtr feature = cpu->features + cpu->nfeatures;
qemuMonitorCPUPropertyPtr prop = modelInfo->props + i;
const char *name = virQEMUCapsCPUFeatureFromQEMU(qemuCaps, prop->name);
if (prop->type != QEMU_MONITOR_CPU_PROPERTY_BOOLEAN)
continue;
feature->name = g_strdup(name);
if (!prop->value.boolean ||
(migratable && prop->migratable == VIR_TRISTATE_BOOL_NO))
feature->policy = VIR_CPU_FEATURE_DISABLE;
else
feature->policy = VIR_CPU_FEATURE_REQUIRE;
cpu->nfeatures++;
}
return 0;
}
virCPUDataPtr
virQEMUCapsGetCPUModelX86Data(virQEMUCapsPtr qemuCaps,
qemuMonitorCPUModelInfoPtr model,
bool migratable)
{
unsigned long long sigFamily = 0;
unsigned long long sigModel = 0;
unsigned long long sigStepping = 0;
virCPUDataPtr data = NULL;
virCPUDataPtr ret = NULL;
size_t i;
if (!(data = virCPUDataNew(VIR_ARCH_X86_64)))
goto cleanup;
for (i = 0; i < model->nprops; i++) {
qemuMonitorCPUPropertyPtr prop = model->props + i;
const char *name = virQEMUCapsCPUFeatureFromQEMU(qemuCaps, prop->name);
switch (prop->type) {
case QEMU_MONITOR_CPU_PROPERTY_BOOLEAN:
if (!prop->value.boolean ||
(migratable && prop->migratable == VIR_TRISTATE_BOOL_NO))
continue;
if (virCPUDataAddFeature(data, name) < 0)
goto cleanup;
break;
case QEMU_MONITOR_CPU_PROPERTY_STRING:
if (STREQ(name, "vendor") &&
virCPUx86DataSetVendor(data, prop->value.string) < 0)
goto cleanup;
break;
case QEMU_MONITOR_CPU_PROPERTY_NUMBER:
if (STREQ(name, "family"))
sigFamily = prop->value.number;
else if (STREQ(name, "model"))
sigModel = prop->value.number;
else if (STREQ(name, "stepping"))
sigStepping = prop->value.number;
break;
case QEMU_MONITOR_CPU_PROPERTY_LAST:
break;
}
}
if (virCPUx86DataSetSignature(data, sigFamily, sigModel, sigStepping) < 0)
goto cleanup;
ret = g_steal_pointer(&data);
cleanup:
virCPUDataFree(data);
return ret;
}
/**
* Returns 0 when host CPU model provided by QEMU was filled in qemuCaps,
* 1 when the caller should fall back to using virCapsPtr->host.cpu,
* -1 on error.
*/
static int
virQEMUCapsInitCPUModelX86(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
qemuMonitorCPUModelInfoPtr model,
virCPUDefPtr cpu,
bool migratable)
{
g_autoptr(virDomainCapsCPUModels) cpuModels = NULL;
virCPUDataPtr data = NULL;
int ret = -1;
if (!model)
return 1;
if (!(data = virQEMUCapsGetCPUModelX86Data(qemuCaps, model, migratable)))
goto cleanup;
cpuModels = virQEMUCapsGetCPUModels(qemuCaps, type, NULL, NULL);
if (cpuDecode(cpu, data, cpuModels) < 0)
goto cleanup;
ret = 0;
cleanup:
virCPUDataFree(data);
return ret;
}
/**
* Returns 0 when host CPU model provided by QEMU was filled in qemuCaps,
* 1 when the caller should fall back to other methods,
* 2 when cpu model info is not supported for this configuration,
* -1 on error.
*/
int
virQEMUCapsInitCPUModel(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
virCPUDefPtr cpu,
bool migratable)
{
qemuMonitorCPUModelInfoPtr modelInfo = virQEMUCapsGetCPUModelInfo(qemuCaps, type);
int ret = 1;
if (migratable && modelInfo && !modelInfo->migratability)
return 1;
if (ARCH_IS_S390(qemuCaps->arch)) {
ret = virQEMUCapsInitCPUModelS390(qemuCaps, type, modelInfo,
cpu, migratable);
} else if (ARCH_IS_X86(qemuCaps->arch)) {
ret = virQEMUCapsInitCPUModelX86(qemuCaps, type, modelInfo,
cpu, migratable);
} else if (ARCH_IS_ARM(qemuCaps->arch)) {
ret = 2;
}
if (ret == 0)
cpu->fallback = VIR_CPU_FALLBACK_FORBID;
return ret;
}
static virCPUDefPtr
virQEMUCapsNewHostCPUModel(void)
{
virCPUDefPtr cpu = virCPUDefNew();
cpu->type = VIR_CPU_TYPE_GUEST;
cpu->mode = VIR_CPU_MODE_CUSTOM;
cpu->match = VIR_CPU_MATCH_EXACT;
cpu->fallback = VIR_CPU_FALLBACK_ALLOW;
return cpu;
}
void
virQEMUCapsInitHostCPUModel(virQEMUCapsPtr qemuCaps,
virArch hostArch,
virDomainVirtType type)
{
virCPUDefPtr cpu = NULL;
virCPUDefPtr cpuExpanded = NULL;
virCPUDefPtr migCPU = NULL;
virCPUDefPtr hostCPU = NULL;
virCPUDefPtr fullCPU = NULL;
size_t i;
int rc;
if (!virQEMUCapsGuestIsNative(hostArch, qemuCaps->arch))
return;
if (!(cpu = virQEMUCapsNewHostCPUModel()))
goto error;
if ((rc = virQEMUCapsInitCPUModel(qemuCaps, type, cpu, false)) < 0) {
goto error;
} else if (rc == 1) {
g_autoptr(virDomainCapsCPUModels) cpuModels = NULL;
VIR_DEBUG("No host CPU model info from QEMU; probing host CPU directly");
cpuModels = virQEMUCapsGetCPUModels(qemuCaps, type, NULL, NULL);
hostCPU = virQEMUCapsProbeHostCPU(hostArch, cpuModels);
if (!hostCPU ||
virCPUDefCopyModelFilter(cpu, hostCPU, true,
virQEMUCapsCPUFilterFeatures,
&qemuCaps->arch) < 0)
goto error;
} else if (rc == 2) {
VIR_DEBUG("QEMU does not provide CPU model for arch=%s virttype=%s",
virArchToString(qemuCaps->arch),
virDomainVirtTypeToString(type));
goto error;
} else if (type == VIR_DOMAIN_VIRT_KVM &&
virCPUGetHostIsSupported(qemuCaps->arch)) {
if (!(fullCPU = virQEMUCapsProbeHostCPU(qemuCaps->arch, NULL)))
goto error;
if (!(cpuExpanded = virCPUDefCopy(cpu)) ||
virCPUExpandFeatures(qemuCaps->arch, cpuExpanded) < 0)
goto error;
for (i = 0; i < cpuExpanded->nfeatures; i++) {
if (cpuExpanded->features[i].policy == VIR_CPU_FEATURE_REQUIRE &&
virCPUDefUpdateFeature(fullCPU, cpuExpanded->features[i].name,
VIR_CPU_FEATURE_REQUIRE) < 0)
goto error;
}
}
if (!(migCPU = virQEMUCapsNewHostCPUModel()))
goto error;
if ((rc = virQEMUCapsInitCPUModel(qemuCaps, type, migCPU, true)) < 0) {
goto error;
} else if (rc == 1) {
VIR_DEBUG("CPU migratability not provided by QEMU");
virCPUDefFree(migCPU);
if (!(migCPU = virCPUCopyMigratable(qemuCaps->arch, cpu)))
goto error;
}
if (ARCH_IS_X86(qemuCaps->arch) &&
!virQEMUCapsGet(qemuCaps, QEMU_CAPS_CPU_UNAVAILABLE_FEATURES)) {
if (cpu &&
virCPUDefFilterFeatures(cpu, virCPUx86FeatureFilterDropMSR, NULL) < 0)
goto error;
if (migCPU &&
virCPUDefFilterFeatures(migCPU, virCPUx86FeatureFilterDropMSR, NULL) < 0)
goto error;
if (fullCPU &&
virCPUDefFilterFeatures(fullCPU, virCPUx86FeatureFilterDropMSR, NULL) < 0)
goto error;
}
virQEMUCapsSetHostModel(qemuCaps, type, cpu, migCPU, fullCPU);
cleanup:
virCPUDefFree(cpuExpanded);
virCPUDefFree(hostCPU);
return;
error:
virCPUDefFree(cpu);
virCPUDefFree(migCPU);
virCPUDefFree(fullCPU);
virResetLastError();
goto cleanup;
}
qemuMonitorCPUModelInfoPtr
virQEMUCapsGetCPUModelInfo(virQEMUCapsPtr qemuCaps,
virDomainVirtType type)
{
return virQEMUCapsGetAccel(qemuCaps, type)->hostCPU.info;
}
void
virQEMUCapsSetCPUModelInfo(virQEMUCapsPtr qemuCaps,
virDomainVirtType type,
qemuMonitorCPUModelInfoPtr modelInfo)
{
virQEMUCapsGetAccel(qemuCaps, type)->hostCPU.info = modelInfo;
}
static int
virQEMUCapsLoadHostCPUModelInfo(virQEMUCapsAccelPtr caps,
xmlXPathContextPtr ctxt,
const char *typeStr)
{
char *str = NULL;
xmlNodePtr hostCPUNode;
xmlNodePtr *nodes = NULL;
VIR_XPATH_NODE_AUTORESTORE(ctxt)
qemuMonitorCPUModelInfoPtr hostCPU = NULL;
g_autofree char *xpath = g_strdup_printf("./hostCPU[@type='%s']", typeStr);
int ret = -1;
size_t i;
int n;
int val;
if (!(hostCPUNode = virXPathNode(xpath, ctxt))) {
ret = 0;
goto cleanup;
}
hostCPU = g_new0(qemuMonitorCPUModelInfo, 1);
if (!(hostCPU->name = virXMLPropString(hostCPUNode, "model"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing host CPU model name in QEMU "
"capabilities cache"));
goto cleanup;
}
if (!(str = virXMLPropString(hostCPUNode, "migratability")) ||
(val = virTristateBoolTypeFromString(str)) <= 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("invalid migratability value for host CPU model"));
goto cleanup;
}
hostCPU->migratability = val == VIR_TRISTATE_BOOL_YES;
VIR_FREE(str);
ctxt->node = hostCPUNode;
if ((n = virXPathNodeSet("./property", ctxt, &nodes)) > 0) {
hostCPU->props = g_new0(qemuMonitorCPUProperty, n);
hostCPU->nprops = n;
for (i = 0; i < n; i++) {
qemuMonitorCPUPropertyPtr prop = hostCPU->props + i;
ctxt->node = nodes[i];
if (!(prop->name = virXMLPropString(ctxt->node, "name"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing 'name' attribute for a host CPU"
" model property in QEMU capabilities cache"));
goto cleanup;
}
if (!(str = virXMLPropString(ctxt->node, "type")) ||
(val = qemuMonitorCPUPropertyTypeFromString(str)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing or invalid CPU model property type "
"in QEMU capabilities cache"));
goto cleanup;
}
VIR_FREE(str);
prop->type = val;
switch (prop->type) {
case QEMU_MONITOR_CPU_PROPERTY_BOOLEAN:
if (virXPathBoolean("./@value='true'", ctxt))
prop->value.boolean = true;
break;
case QEMU_MONITOR_CPU_PROPERTY_STRING:
prop->value.string = virXMLPropString(ctxt->node, "value");
if (!prop->value.string) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("invalid string value for '%s' host CPU "
"model property in QEMU capabilities cache"),
prop->name);
goto cleanup;
}
break;
case QEMU_MONITOR_CPU_PROPERTY_NUMBER:
if (virXPathLongLong("string(./@value)", ctxt,
&prop->value.number) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("invalid number value for '%s' host CPU "
"model property in QEMU capabilities cache"),
prop->name);
goto cleanup;
}
break;
case QEMU_MONITOR_CPU_PROPERTY_LAST:
break;
}
if ((str = virXMLPropString(ctxt->node, "migratable"))) {
if ((val = virTristateBoolTypeFromString(str)) <= 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown migratable value for '%s' host "
"CPU model property"),
prop->name);
goto cleanup;
}
prop->migratable = val;
VIR_FREE(str);
}
}
}
caps->hostCPU.info = g_steal_pointer(&hostCPU);
ret = 0;
cleanup:
VIR_FREE(str);
VIR_FREE(nodes);
qemuMonitorCPUModelInfoFree(hostCPU);
return ret;
}
static int
virQEMUCapsLoadCPUModels(virQEMUCapsAccelPtr caps,
xmlXPathContextPtr ctxt,
const char *typeStr)
{
g_autoptr(qemuMonitorCPUDefs) defs = NULL;
g_autofree xmlNodePtr * nodes = NULL;
g_autofree char *xpath = g_strdup_printf("./cpu[@type='%s']", typeStr);
size_t i;
int n;
xmlNodePtr node;
if ((n = virXPathNodeSet(xpath, ctxt, &nodes)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to parse qemu capabilities cpus"));
return -1;
}
if (n == 0)
return 0;
if (!(defs = qemuMonitorCPUDefsNew(n)))
return -1;
for (i = 0; i < n; i++) {
qemuMonitorCPUDefInfoPtr cpu = defs->cpus + i;
int usable = VIR_DOMCAPS_CPU_USABLE_UNKNOWN;
g_autofree char * strUsable = NULL;
g_autofree xmlNodePtr * blockerNodes = NULL;
g_autofree char *deprecated = NULL;
int nblockers;
if ((strUsable = virXMLPropString(nodes[i], "usable")) &&
(usable = virDomainCapsCPUUsableTypeFromString(strUsable)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown value '%s' in attribute 'usable'"),
strUsable);
return -1;
}
cpu->usable = usable;
if (!(cpu->name = virXMLPropString(nodes[i], "name"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing cpu name in QEMU capabilities cache"));
return -1;
}
cpu->type = virXMLPropString(nodes[i], "typename");
node = ctxt->node;
ctxt->node = nodes[i];
nblockers = virXPathNodeSet("./blocker", ctxt, &blockerNodes);
ctxt->node = node;
if (nblockers < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to parse CPU blockers in QEMU capabilities"));
return -1;
}
if (nblockers > 0) {
size_t j;
cpu->blockers = g_new0(char *, nblockers + 1);
for (j = 0; j < nblockers; j++) {
if (!(cpu->blockers[j] = virXMLPropString(blockerNodes[j], "name"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing blocker name in QEMU "
"capabilities cache"));
return -1;
}
}
}
deprecated = virXMLPropString(nodes[i], "deprecated");
if (deprecated &&
STREQ(deprecated, "yes"))
cpu->deprecated = true;
}
caps->cpuModels = g_steal_pointer(&defs);
return 0;
}
static int
virQEMUCapsLoadMachines(virQEMUCapsAccelPtr caps,
xmlXPathContextPtr ctxt,
const char *typeStr)
{
g_autofree char *xpath = g_strdup_printf("./machine[@type='%s']", typeStr);
g_autofree xmlNodePtr *nodes = NULL;
size_t i;
int n;
if ((n = virXPathNodeSet(xpath, ctxt, &nodes)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to parse qemu capabilities machines"));
return -1;
}
if (n == 0)
return 0;
caps->nmachineTypes = n;
caps->machineTypes = g_new0(virQEMUCapsMachineType, caps->nmachineTypes);
for (i = 0; i < n; i++) {
g_autofree char *str = NULL;
if (!(caps->machineTypes[i].name = virXMLPropString(nodes[i], "name"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing machine name in QEMU capabilities cache"));
return -1;
}
caps->machineTypes[i].alias = virXMLPropString(nodes[i], "alias");
str = virXMLPropString(nodes[i], "maxCpus");
if (str &&
virStrToLong_ui(str, NULL, 10, &(caps->machineTypes[i].maxCpus)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed machine cpu count in QEMU capabilities cache"));
return -1;
}
VIR_FREE(str);
str = virXMLPropString(nodes[i], "hotplugCpus");
if (STREQ_NULLABLE(str, "yes"))
caps->machineTypes[i].hotplugCpus = true;
VIR_FREE(str);
str = virXMLPropString(nodes[i], "default");
if (STREQ_NULLABLE(str, "yes"))
caps->machineTypes[i].qemuDefault = true;
VIR_FREE(str);
str = virXMLPropString(nodes[i], "numaMemSupported");
if (STREQ_NULLABLE(str, "yes"))
caps->machineTypes[i].numaMemSupported = true;
VIR_FREE(str);
caps->machineTypes[i].defaultCPU = virXMLPropString(nodes[i], "defaultCPU");
caps->machineTypes[i].defaultRAMid = virXMLPropString(nodes[i], "defaultRAMid");
str = virXMLPropString(nodes[i], "deprecated");
if (STREQ_NULLABLE(str, "yes"))
caps->machineTypes[i].deprecated = true;
VIR_FREE(str);
}
return 0;
}
static int
virQEMUCapsLoadAccel(virQEMUCapsPtr qemuCaps,
xmlXPathContextPtr ctxt,
virDomainVirtType type)
{
virQEMUCapsAccelPtr caps = virQEMUCapsGetAccel(qemuCaps, type);
const char *typeStr = type == VIR_DOMAIN_VIRT_KVM ? "kvm" : "tcg";
if (virQEMUCapsLoadHostCPUModelInfo(caps, ctxt, typeStr) < 0)
return -1;
if (virQEMUCapsLoadCPUModels(caps, ctxt, typeStr) < 0)
return -1;
if (virQEMUCapsLoadMachines(caps, ctxt, typeStr) < 0)
return -1;
return 0;
}
struct _virQEMUCapsCachePriv {
char *libDir;
uid_t runUid;
gid_t runGid;
virArch hostArch;
unsigned int microcodeVersion;
char *kernelVersion;
char *hostCPUSignature;
/* cache whether /dev/kvm is usable as runUid:runGuid */
virTristateBool kvmUsable;
time_t kvmCtime;
};
typedef struct _virQEMUCapsCachePriv virQEMUCapsCachePriv;
typedef virQEMUCapsCachePriv *virQEMUCapsCachePrivPtr;
static void
virQEMUCapsCachePrivFree(void *privData)
{
virQEMUCapsCachePrivPtr priv = privData;
g_free(priv->libDir);
g_free(priv->kernelVersion);
g_free(priv->hostCPUSignature);
g_free(priv);
}
static int
virQEMUCapsParseSEVInfo(virQEMUCapsPtr qemuCaps, xmlXPathContextPtr ctxt)
{
g_autoptr(virSEVCapability) sev = NULL;
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_SEV_GUEST))
return 0;
if (virXPathBoolean("boolean(./sev)", ctxt) == 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing SEV platform data in QEMU "
"capabilities cache"));
return -1;
}
sev = g_new0(virSEVCapability, 1);
if (virXPathUInt("string(./sev/cbitpos)", ctxt, &sev->cbitpos) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing or malformed SEV cbitpos information "
"in QEMU capabilities cache"));
return -1;
}
if (virXPathUInt("string(./sev/reducedPhysBits)", ctxt,
&sev->reduced_phys_bits) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing or malformed SEV reducedPhysBits information "
"in QEMU capabilities cache"));
return -1;
}
if (!(sev->pdh = virXPathString("string(./sev/pdh)", ctxt))) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing SEV pdh information "
"in QEMU capabilities cache"));
return -1;
}
if (!(sev->cert_chain = virXPathString("string(./sev/certChain)", ctxt))) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing SEV certChain information "
"in QEMU capabilities cache"));
return -1;
}
qemuCaps->sevCapabilities = g_steal_pointer(&sev);
return 0;
}
/*
* Parsing a doc that looks like
*
* <qemuCaps>
* <emulator>/some/path</emulator>
* <qemuctime>234235253</qemuctime>
* <qemumoddirmtime>234235253</qemumoddirmtime>
* <selfctime>234235253</selfctime>
* <selfvers>1002016</selfvers>
* <flag name='foo'/>
* <flag name='bar'/>
* ...
* <cpu name="pentium3"/>
* ...
* <machine name='pc-1.0' alias='pc' hotplugCpus='yes' maxCpus='4' default='yes' numaMemSupported='yes'/>
* ...
* </qemuCaps>
*
* Returns 0 on success, 1 if outdated, -1 on error
*/
int
virQEMUCapsLoadCache(virArch hostArch,
virQEMUCapsPtr qemuCaps,
const char *filename,
bool skipInvalidation)
{
xmlDocPtr doc = NULL;
int ret = -1;
size_t i;
int n;
xmlNodePtr *nodes = NULL;
xmlXPathContextPtr ctxt = NULL;
char *str = NULL;
long long int l;
unsigned long lu;
if (!(doc = virXMLParseFile(filename)))
goto cleanup;
if (!(ctxt = virXMLXPathContextNew(doc)))
goto cleanup;
ctxt->node = xmlDocGetRootElement(doc);
if (STRNEQ((const char *)ctxt->node->name, "qemuCaps")) {
virReportError(VIR_ERR_XML_ERROR,
_("unexpected root element <%s>, "
"expecting <qemuCaps>"),
ctxt->node->name);
goto cleanup;
}
if (virXPathLongLong("string(./selfctime)", ctxt, &l) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing selfctime in QEMU capabilities XML"));
goto cleanup;
}
qemuCaps->libvirtCtime = (time_t)l;
qemuCaps->libvirtVersion = 0;
if (virXPathULong("string(./selfvers)", ctxt, &lu) == 0)
qemuCaps->libvirtVersion = lu;
if (!skipInvalidation &&
(qemuCaps->libvirtCtime != virGetSelfLastChanged() ||
qemuCaps->libvirtVersion != LIBVIR_VERSION_NUMBER)) {
VIR_DEBUG("Outdated capabilities in %s: libvirt changed "
"(%lld vs %lld, %lu vs %lu), stopping load",
qemuCaps->binary,
(long long)qemuCaps->libvirtCtime,
(long long)virGetSelfLastChanged(),
(unsigned long)qemuCaps->libvirtVersion,
(unsigned long)LIBVIR_VERSION_NUMBER);
ret = 1;
goto cleanup;
}
if (!(str = virXPathString("string(./emulator)", ctxt))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing emulator in QEMU capabilities cache"));
goto cleanup;
}
if (STRNEQ(str, qemuCaps->binary)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Expected caps for '%s' but saw '%s'"),
qemuCaps->binary, str);
goto cleanup;
}
VIR_FREE(str);
if (virXPathLongLong("string(./qemuctime)", ctxt, &l) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing qemuctime in QEMU capabilities XML"));
goto cleanup;
}
qemuCaps->ctime = (time_t)l;
if (virXPathLongLong("string(./qemumoddirmtime)", ctxt, &l) == 0)
qemuCaps->modDirMtime = (time_t)l;
if ((n = virXPathNodeSet("./flag", ctxt, &nodes)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to parse qemu capabilities flags"));
goto cleanup;
}
VIR_DEBUG("Got flags %d", n);
for (i = 0; i < n; i++) {
int flag;
if (!(str = virXMLPropString(nodes[i], "name"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing flag name in QEMU capabilities cache"));
goto cleanup;
}
flag = virQEMUCapsTypeFromString(str);
if (flag < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unknown qemu capabilities flag %s"), str);
goto cleanup;
}
VIR_FREE(str);
virQEMUCapsSet(qemuCaps, flag);
}
VIR_FREE(nodes);
if (virXPathUInt("string(./version)", ctxt, &qemuCaps->version) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing version in QEMU capabilities cache"));
goto cleanup;
}
if (virXPathUInt("string(./kvmVersion)", ctxt, &qemuCaps->kvmVersion) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing version in QEMU capabilities cache"));
goto cleanup;
}
if (virXPathUInt("string(./microcodeVersion)", ctxt,
&qemuCaps->microcodeVersion) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing microcode version in QEMU capabilities cache"));
goto cleanup;
}
qemuCaps->hostCPUSignature = virXPathString("string(./hostCPUSignature)", ctxt);
if (virXPathBoolean("boolean(./package)", ctxt) > 0) {
qemuCaps->package = virXPathString("string(./package)", ctxt);
if (!qemuCaps->package)
qemuCaps->package = g_strdup("");
}
if (virXPathBoolean("boolean(./kernelVersion)", ctxt) > 0) {
qemuCaps->kernelVersion = virXPathString("string(./kernelVersion)", ctxt);
if (!qemuCaps->kernelVersion)
goto cleanup;
}
if (!(str = virXPathString("string(./arch)", ctxt))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing arch in QEMU capabilities cache"));
goto cleanup;
}
if (!(qemuCaps->arch = virArchFromString(str))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown arch %s in QEMU capabilities cache"), str);
goto cleanup;
}
VIR_FREE(str);
if (virQEMUCapsLoadAccel(qemuCaps, ctxt, VIR_DOMAIN_VIRT_KVM) < 0 ||
virQEMUCapsLoadAccel(qemuCaps, ctxt, VIR_DOMAIN_VIRT_QEMU) < 0)
goto cleanup;
if ((n = virXPathNodeSet("./gic", ctxt, &nodes)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("failed to parse qemu capabilities gic"));
goto cleanup;
}
if (n > 0) {
unsigned int uintValue;
bool boolValue;
qemuCaps->ngicCapabilities = n;
qemuCaps->gicCapabilities = g_new0(virGICCapability, n);
for (i = 0; i < n; i++) {
virGICCapabilityPtr cap = &qemuCaps->gicCapabilities[i];
if (!(str = virXMLPropString(nodes[i], "version"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing GIC version "
"in QEMU capabilities cache"));
goto cleanup;
}
if (virStrToLong_ui(str, NULL, 10, &uintValue) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed GIC version "
"in QEMU capabilities cache"));
goto cleanup;
}
cap->version = uintValue;
VIR_FREE(str);
if (!(str = virXMLPropString(nodes[i], "kernel"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing in-kernel GIC information "
"in QEMU capabilities cache"));
goto cleanup;
}
if (!(boolValue = STREQ(str, "yes")) && STRNEQ(str, "no")) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed in-kernel GIC information "
"in QEMU capabilities cache"));
goto cleanup;
}
if (boolValue)
cap->implementation |= VIR_GIC_IMPLEMENTATION_KERNEL;
VIR_FREE(str);
if (!(str = virXMLPropString(nodes[i], "emulated"))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing emulated GIC information "
"in QEMU capabilities cache"));
goto cleanup;
}
if (!(boolValue = STREQ(str, "yes")) && STRNEQ(str, "no")) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed emulated GIC information "
"in QEMU capabilities cache"));
goto cleanup;
}
if (boolValue)
cap->implementation |= VIR_GIC_IMPLEMENTATION_EMULATED;
VIR_FREE(str);
}
}
VIR_FREE(nodes);
if (virQEMUCapsParseSEVInfo(qemuCaps, ctxt) < 0)
goto cleanup;
virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_KVM);
virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_QEMU);
if (virXPathBoolean("boolean(./kvmSupportsNesting)", ctxt) > 0)
qemuCaps->kvmSupportsNesting = true;
if (virXPathBoolean("boolean(./kvmSupportsSecureGuest)", ctxt) > 0)
qemuCaps->kvmSupportsSecureGuest = true;
if (skipInvalidation)
qemuCaps->invalidation = false;
ret = 0;
cleanup:
VIR_FREE(str);
VIR_FREE(nodes);
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
return ret;
}
static void
virQEMUCapsFormatHostCPUModelInfo(virQEMUCapsAccelPtr caps,
virBufferPtr buf,
const char *typeStr)
{
qemuMonitorCPUModelInfoPtr model = caps->hostCPU.info;
size_t i;
if (!model)
return;
virBufferAsprintf(buf,
"<hostCPU type='%s' model='%s' migratability='%s'>\n",
typeStr, model->name,
model->migratability ? "yes" : "no");
virBufferAdjustIndent(buf, 2);
for (i = 0; i < model->nprops; i++) {
qemuMonitorCPUPropertyPtr prop = model->props + i;
virBufferAsprintf(buf, "<property name='%s' type='%s' ",
prop->name,
qemuMonitorCPUPropertyTypeToString(prop->type));
switch (prop->type) {
case QEMU_MONITOR_CPU_PROPERTY_BOOLEAN:
virBufferAsprintf(buf, "value='%s'",
prop->value.boolean ? "true" : "false");
break;
case QEMU_MONITOR_CPU_PROPERTY_STRING:
virBufferEscapeString(buf, "value='%s'", prop->value.string);
break;
case QEMU_MONITOR_CPU_PROPERTY_NUMBER:
virBufferAsprintf(buf, "value='%lld'", prop->value.number);
break;
case QEMU_MONITOR_CPU_PROPERTY_LAST:
break;
}
if (prop->migratable > 0)
virBufferAsprintf(buf, " migratable='%s'",
virTristateBoolTypeToString(prop->migratable));
virBufferAddLit(buf, "/>\n");
}
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</hostCPU>\n");
}
static void
virQEMUCapsFormatCPUModels(virQEMUCapsAccelPtr caps,
virBufferPtr buf,
const char *typeStr)
{
qemuMonitorCPUDefsPtr defs = caps->cpuModels;
size_t i;
if (!defs)
return;
for (i = 0; i < defs->ncpus; i++) {
qemuMonitorCPUDefInfoPtr cpu = defs->cpus + i;
virBufferAsprintf(buf, "<cpu type='%s' ", typeStr);
virBufferEscapeString(buf, "name='%s'", cpu->name);
virBufferEscapeString(buf, " typename='%s'", cpu->type);
if (cpu->usable) {
virBufferAsprintf(buf, " usable='%s'",
virDomainCapsCPUUsableTypeToString(cpu->usable));
}
if (cpu->deprecated)
virBufferAddLit(buf, " deprecated='yes'");
if (cpu->blockers) {
size_t j;
virBufferAddLit(buf, ">\n");
virBufferAdjustIndent(buf, 2);
for (j = 0; cpu->blockers[j]; j++)
virBufferAsprintf(buf, "<blocker name='%s'/>\n", cpu->blockers[j]);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</cpu>\n");
} else {
virBufferAddLit(buf, "/>\n");
}
}
}
static void
virQEMUCapsFormatMachines(virQEMUCapsAccelPtr caps,
virBufferPtr buf,
const char *typeStr)
{
size_t i;
for (i = 0; i < caps->nmachineTypes; i++) {
virBufferAsprintf(buf, "<machine type='%s'", typeStr);
virBufferEscapeString(buf, " name='%s'",
caps->machineTypes[i].name);
virBufferEscapeString(buf, " alias='%s'",
caps->machineTypes[i].alias);
if (caps->machineTypes[i].hotplugCpus)
virBufferAddLit(buf, " hotplugCpus='yes'");
virBufferAsprintf(buf, " maxCpus='%u'",
caps->machineTypes[i].maxCpus);
if (caps->machineTypes[i].qemuDefault)
virBufferAddLit(buf, " default='yes'");
virBufferEscapeString(buf, " defaultCPU='%s'",
caps->machineTypes[i].defaultCPU);
if (caps->machineTypes[i].numaMemSupported)
virBufferAddLit(buf, " numaMemSupported='yes'");
virBufferEscapeString(buf, " defaultRAMid='%s'",
caps->machineTypes[i].defaultRAMid);
if (caps->machineTypes[i].deprecated)
virBufferAddLit(buf, " deprecated='yes'");
virBufferAddLit(buf, "/>\n");
}
}
static void
virQEMUCapsFormatAccel(virQEMUCapsPtr qemuCaps,
virBufferPtr buf,
virDomainVirtType type)
{
virQEMUCapsAccelPtr caps = virQEMUCapsGetAccel(qemuCaps, type);
const char *typeStr = type == VIR_DOMAIN_VIRT_KVM ? "kvm" : "tcg";
virQEMUCapsFormatHostCPUModelInfo(caps, buf, typeStr);
virQEMUCapsFormatCPUModels(caps, buf, typeStr);
virQEMUCapsFormatMachines(caps, buf, typeStr);
}
static void
virQEMUCapsFormatSEVInfo(virQEMUCapsPtr qemuCaps, virBufferPtr buf)
{
virSEVCapabilityPtr sev = virQEMUCapsGetSEVCapabilities(qemuCaps);
virBufferAddLit(buf, "<sev>\n");
virBufferAdjustIndent(buf, 2);
virBufferAsprintf(buf, "<cbitpos>%u</cbitpos>\n", sev->cbitpos);
virBufferAsprintf(buf, "<reducedPhysBits>%u</reducedPhysBits>\n",
sev->reduced_phys_bits);
virBufferEscapeString(buf, "<pdh>%s</pdh>\n", sev->pdh);
virBufferEscapeString(buf, "<certChain>%s</certChain>\n",
sev->cert_chain);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</sev>\n");
}
char *
virQEMUCapsFormatCache(virQEMUCapsPtr qemuCaps)
{
g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
size_t i;
virBufferAddLit(&buf, "<qemuCaps>\n");
virBufferAdjustIndent(&buf, 2);
virBufferEscapeString(&buf, "<emulator>%s</emulator>\n",
qemuCaps->binary);
virBufferAsprintf(&buf, "<qemuctime>%llu</qemuctime>\n",
(long long)qemuCaps->ctime);
if (qemuCaps->modDirMtime > 0) {
virBufferAsprintf(&buf, "<qemumoddirmtime>%llu</qemumoddirmtime>\n",
(long long)qemuCaps->modDirMtime);
}
virBufferAsprintf(&buf, "<selfctime>%llu</selfctime>\n",
(long long)qemuCaps->libvirtCtime);
virBufferAsprintf(&buf, "<selfvers>%lu</selfvers>\n",
(unsigned long)qemuCaps->libvirtVersion);
for (i = 0; i < QEMU_CAPS_LAST; i++) {
if (virQEMUCapsGet(qemuCaps, i)) {
virBufferAsprintf(&buf, "<flag name='%s'/>\n",
virQEMUCapsTypeToString(i));
}
}
virBufferAsprintf(&buf, "<version>%d</version>\n",
qemuCaps->version);
virBufferAsprintf(&buf, "<kvmVersion>%d</kvmVersion>\n",
qemuCaps->kvmVersion);
virBufferAsprintf(&buf, "<microcodeVersion>%u</microcodeVersion>\n",
qemuCaps->microcodeVersion);
virBufferEscapeString(&buf, "<hostCPUSignature>%s</hostCPUSignature>\n",
qemuCaps->hostCPUSignature);
if (qemuCaps->package)
virBufferAsprintf(&buf, "<package>%s</package>\n",
qemuCaps->package);
if (qemuCaps->kernelVersion)
virBufferAsprintf(&buf, "<kernelVersion>%s</kernelVersion>\n",
qemuCaps->kernelVersion);
virBufferAsprintf(&buf, "<arch>%s</arch>\n",
virArchToString(qemuCaps->arch));
virQEMUCapsFormatAccel(qemuCaps, &buf, VIR_DOMAIN_VIRT_KVM);
virQEMUCapsFormatAccel(qemuCaps, &buf, VIR_DOMAIN_VIRT_QEMU);
for (i = 0; i < qemuCaps->ngicCapabilities; i++) {
virGICCapabilityPtr cap;
bool kernel;
bool emulated;
cap = &qemuCaps->gicCapabilities[i];
kernel = (cap->implementation & VIR_GIC_IMPLEMENTATION_KERNEL);
emulated = (cap->implementation & VIR_GIC_IMPLEMENTATION_EMULATED);
virBufferAsprintf(&buf,
"<gic version='%d' kernel='%s' emulated='%s'/>\n",
cap->version,
kernel ? "yes" : "no",
emulated ? "yes" : "no");
}
if (qemuCaps->sevCapabilities)
virQEMUCapsFormatSEVInfo(qemuCaps, &buf);
if (qemuCaps->kvmSupportsNesting)
virBufferAddLit(&buf, "<kvmSupportsNesting/>\n");
if (qemuCaps->kvmSupportsSecureGuest)
virBufferAddLit(&buf, "<kvmSupportsSecureGuest/>\n");
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</qemuCaps>\n");
return virBufferContentAndReset(&buf);
}
static int
virQEMUCapsSaveFile(void *data,
const char *filename,
void *privData G_GNUC_UNUSED)
{
virQEMUCapsPtr qemuCaps = data;
char *xml = NULL;
int ret = -1;
xml = virQEMUCapsFormatCache(qemuCaps);
if (virFileWriteStr(filename, xml, 0600) < 0) {
virReportSystemError(errno,
_("Failed to save '%s' for '%s'"),
filename, qemuCaps->binary);
goto cleanup;
}
VIR_DEBUG("Saved caps '%s' for '%s' with (%lld, %lld)",
filename, qemuCaps->binary,
(long long)qemuCaps->ctime,
(long long)qemuCaps->libvirtCtime);
ret = 0;
cleanup:
VIR_FREE(xml);
return ret;
}
/*
* Check whether IBM Secure Execution (S390) is enabled
*/
static bool
virQEMUCapsKVMSupportsSecureGuestS390(void)
{
g_autofree char *cmdline = NULL;
static const char *kValues[] = {"y", "Y", "on", "ON", "oN", "On", "1"};
if (!virFileIsDir("/sys/firmware/uv"))
return false;
if (virFileReadValueString(&cmdline, "/proc/cmdline") < 0)
return false;
/* we're prefix matching rather than equality matching here, because kernel
* would treat even something like prot_virt='yFOO' as enabled */
if (virKernelCmdlineMatchParam(cmdline, "prot_virt", kValues,
G_N_ELEMENTS(kValues),
VIR_KERNEL_CMDLINE_FLAGS_SEARCH_FIRST |
VIR_KERNEL_CMDLINE_FLAGS_CMP_PREFIX))
return true;
return false;
}
/*
* Check whether AMD Secure Encrypted Virtualization (x86) is enabled
*/
static bool
virQEMUCapsKVMSupportsSecureGuestAMD(void)
{
g_autofree char *modValue = NULL;
if (virFileReadValueString(&modValue, "/sys/module/kvm_amd/parameters/sev") < 0)
return false;
if (modValue[0] != '1')
return false;
if (virFileExists(QEMU_DEV_SEV))
return true;
return false;
}
/*
* Check whether the secure guest functionality is enabled.
* See the specific architecture function for details on the verifications made.
*/
static bool
virQEMUCapsKVMSupportsSecureGuest(void)
{
virArch arch = virArchFromHost();
if (ARCH_IS_S390(arch))
return virQEMUCapsKVMSupportsSecureGuestS390();
if (ARCH_IS_X86(arch))
return virQEMUCapsKVMSupportsSecureGuestAMD();
return false;
}
/* Check the kernel module parameters 'nested' file to determine if enabled
*
* Intel: 'kvm_intel' uses 'Y'
* AMD: 'kvm_amd' uses '1'
* PPC64: 'kvm_hv' uses 'Y'
* S390: 'kvm' uses '1'
*/
static bool
virQEMUCapsKVMSupportsNesting(void)
{
static char const * const kmod[] = {"kvm_intel", "kvm_amd",
"kvm_hv", "kvm"};
g_autofree char *value = NULL;
int rc;
size_t i;
for (i = 0; i < G_N_ELEMENTS(kmod); i++) {
VIR_FREE(value);
rc = virFileReadValueString(&value, "/sys/module/%s/parameters/nested",
kmod[i]);
if (rc == -2)
continue;
if (rc < 0) {
virResetLastError();
return false;
}
if (value[0] == 'Y' || value[0] == 'y' || value[0] == '1')
return true;
}
return false;
}
/* Determine whether '/dev/kvm' is usable as QEMU user:QEMU group. */
static bool
virQEMUCapsKVMUsable(virQEMUCapsCachePrivPtr priv)
{
struct stat sb;
static const char *kvm_device = "/dev/kvm";
virTristateBool value;
virTristateBool cached_value = priv->kvmUsable;
time_t kvm_ctime;
time_t cached_kvm_ctime = priv->kvmCtime;
if (stat(kvm_device, &sb) < 0) {
if (errno != ENOENT) {
virReportSystemError(errno,
_("Failed to stat %s"), kvm_device);
}
return false;
}
kvm_ctime = sb.st_ctime;
if (kvm_ctime != cached_kvm_ctime) {
VIR_DEBUG("%s has changed (%lld vs %lld)", kvm_device,
(long long)kvm_ctime, (long long)cached_kvm_ctime);
cached_value = VIR_TRISTATE_BOOL_ABSENT;
}
if (cached_value != VIR_TRISTATE_BOOL_ABSENT)
return cached_value == VIR_TRISTATE_BOOL_YES;
if (virFileAccessibleAs(kvm_device, R_OK | W_OK,
priv->runUid, priv->runGid) == 0) {
value = VIR_TRISTATE_BOOL_YES;
} else {
value = VIR_TRISTATE_BOOL_NO;
}
/* There is a race window between 'stat' and
* 'virFileAccessibleAs'. However, since we're only interested in
* detecting changes *after* the virFileAccessibleAs check, we can
* neglect this here.
*/
priv->kvmCtime = kvm_ctime;
priv->kvmUsable = value;
return value == VIR_TRISTATE_BOOL_YES;
}
static bool
virQEMUCapsIsValid(void *data,
void *privData)
{
virQEMUCapsPtr qemuCaps = data;
virQEMUCapsCachePrivPtr priv = privData;
bool kvmUsable;
struct stat sb;
bool kvmSupportsNesting;
if (!qemuCaps->invalidation)
return true;
if (!qemuCaps->binary)
return true;
if (virFileExists(QEMU_MODDIR)) {
if (stat(QEMU_MODDIR, &sb) < 0) {
VIR_DEBUG("Failed to stat QEMU module directory '%s': %s",
QEMU_MODDIR,
g_strerror(errno));
return false;
}
if (sb.st_mtime != qemuCaps->modDirMtime) {
VIR_DEBUG("Outdated capabilities for '%s': QEMU modules "
"directory '%s' changed (%lld vs %lld)",
qemuCaps->binary, QEMU_MODDIR,
(long long)sb.st_mtime, (long long)qemuCaps->modDirMtime);
return false;
}
}
if (qemuCaps->libvirtCtime != virGetSelfLastChanged() ||
qemuCaps->libvirtVersion != LIBVIR_VERSION_NUMBER) {
VIR_DEBUG("Outdated capabilities for '%s': libvirt changed "
"(%lld vs %lld, %lu vs %lu)",
qemuCaps->binary,
(long long)qemuCaps->libvirtCtime,
(long long)virGetSelfLastChanged(),
(unsigned long)qemuCaps->libvirtVersion,
(unsigned long)LIBVIR_VERSION_NUMBER);
return false;
}
if (stat(qemuCaps->binary, &sb) < 0) {
VIR_DEBUG("Failed to stat QEMU binary '%s': %s",
qemuCaps->binary,
g_strerror(errno));
return false;
}
if (sb.st_ctime != qemuCaps->ctime) {
VIR_DEBUG("Outdated capabilities for '%s': QEMU binary changed "
"(%lld vs %lld)",
qemuCaps->binary,
(long long)sb.st_ctime, (long long)qemuCaps->ctime);
return false;
}
if (!virQEMUCapsGuestIsNative(priv->hostArch, qemuCaps->arch)) {
VIR_DEBUG("Guest arch (%s) is not native to host arch (%s), "
"skipping KVM-related checks",
virArchToString(qemuCaps->arch),
virArchToString(priv->hostArch));
return true;
}
kvmUsable = virQEMUCapsKVMUsable(priv);
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM) &&
kvmUsable) {
VIR_DEBUG("KVM was not enabled when probing '%s', "
"but it should be usable now",
qemuCaps->binary);
return false;
}
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM) &&
!kvmUsable) {
VIR_DEBUG("KVM was enabled when probing '%s', "
"but it is not available now",
qemuCaps->binary);
return false;
}
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
if (STRNEQ_NULLABLE(priv->hostCPUSignature, qemuCaps->hostCPUSignature)) {
VIR_DEBUG("Outdated capabilities for '%s': host CPU changed "
"('%s' vs '%s')",
qemuCaps->binary,
priv->hostCPUSignature,
qemuCaps->hostCPUSignature);
return false;
}
if (priv->microcodeVersion != qemuCaps->microcodeVersion) {
VIR_DEBUG("Outdated capabilities for '%s': microcode version "
"changed (%u vs %u)",
qemuCaps->binary,
priv->microcodeVersion,
qemuCaps->microcodeVersion);
return false;
}
if (STRNEQ_NULLABLE(priv->kernelVersion, qemuCaps->kernelVersion)) {
VIR_DEBUG("Outdated capabilities for '%s': kernel version changed "
"('%s' vs '%s')",
qemuCaps->binary,
priv->kernelVersion,
qemuCaps->kernelVersion);
return false;
}
kvmSupportsNesting = virQEMUCapsKVMSupportsNesting();
if (kvmSupportsNesting != qemuCaps->kvmSupportsNesting) {
VIR_DEBUG("Outdated capabilities for '%s': kvm kernel nested "
"value changed from %d",
qemuCaps->binary, qemuCaps->kvmSupportsNesting);
return false;
}
if (virQEMUCapsKVMSupportsSecureGuest() != qemuCaps->kvmSupportsSecureGuest) {
VIR_DEBUG("Outdated capabilities for '%s': kvm kernel secure guest "
"value changed from %d",
qemuCaps->binary, qemuCaps->kvmSupportsSecureGuest);
return false;
}
}
return true;
}
/**
* virQEMUCapsInitQMPArch:
* @qemuCaps: QEMU capabilities
* @mon: QEMU monitor
*
* Initialize the architecture for @qemuCaps by asking @mon.
*
* Returns: 0 on success, <0 on failure
*/
static int
virQEMUCapsInitQMPArch(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
g_autofree char *archstr = NULL;
if (!(archstr = qemuMonitorGetTargetArch(mon)))
return -1;
if ((qemuCaps->arch = virQEMUCapsArchFromString(archstr)) == VIR_ARCH_NONE) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unknown QEMU arch %s"), archstr);
return -1;
}
return 0;
}
/**
* virQEMUCapsInitQMPBasicArch:
* @qemuCaps: QEMU capabilities
*
* Initialize @qemuCaps with basic architecture-dependent capabilities.
*/
void
virQEMUCapsInitQMPBasicArch(virQEMUCapsPtr qemuCaps)
{
/* ACPI only works on x86 and aarch64 */
if (ARCH_IS_X86(qemuCaps->arch) ||
qemuCaps->arch == VIR_ARCH_AARCH64) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_ACPI);
}
/* HPET is x86 specific */
if (ARCH_IS_X86(qemuCaps->arch))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NO_HPET);
}
/**
* virQEMUCapsInitQMPVersionCaps:
* @qemuCaps: QEMU capabilities
*
* Add all QEMU capabilities based on version of QEMU.
*/
static void
virQEMUCapsInitQMPVersionCaps(virQEMUCapsPtr qemuCaps)
{
if (qemuCaps->version >= 1006000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_DEVICE_VIDEO_PRIMARY);
/* vmport option is supported v2.2.0 onwards */
if (qemuCaps->version >= 2002000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_VMPORT_OPT);
/* -cpu ...,aarch64=off supported in v2.3.0 and onwards. But it
isn't detectable via qmp at this point */
if (qemuCaps->arch == VIR_ARCH_AARCH64 &&
qemuCaps->version >= 2003000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CPU_AARCH64_OFF);
/* vhost-user supports multi-queue from v2.4.0 onwards,
* but there is no way to query for that capability */
if (qemuCaps->version >= 2004000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_VHOSTUSER_MULTIQUEUE);
/* smm option is supported from v2.4.0 */
if (qemuCaps->version >= 2004000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_SMM_OPT);
/* sdl -gl option is supported from v2.4.0 (qemu commit id 0b71a5d5) */
if (qemuCaps->version >= 2004000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SDL_GL);
/* Since 2.4.50 ARM virt machine supports gic-version option */
if (qemuCaps->version >= 2004050)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACH_VIRT_GIC_VERSION);
/* no way to query if -machine kernel_irqchip supports split */
if (qemuCaps->version >= 2006000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_KERNEL_IRQCHIP_SPLIT);
/* HPT resizing is supported since QEMU 2.10 on ppc64; unfortunately
* there's no sane way to probe for it */
if (qemuCaps->version >= 2010000 &&
ARCH_IS_PPC64(qemuCaps->arch)) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT);
}
/* '-display egl-headless' cmdline option is supported since QEMU 2.10, but
* there's no way to probe it */
if (qemuCaps->version >= 2010000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_EGL_HEADLESS);
/* no way to query for -numa dist */
if (qemuCaps->version >= 2010000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_NUMA_DIST);
/* no way to query max-cpu-compat */
if (qemuCaps->version >= 2010000 &&
ARCH_IS_PPC64(qemuCaps->arch)) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_MAX_CPU_COMPAT);
}
/* TCG couldn't be disabled nor queried until QEMU 2.10 */
if (qemuCaps->version < 2010000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_TCG);
/* -enable-fips is deprecated in QEMU 5.2.0, and QEMU
* should be built with gcrypt to achieve FIPS compliance
* automatically / implicitly
*/
if (qemuCaps->version < 5002000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_ENABLE_FIPS);
}
/**
* virQEMUCapsInitProcessCapsInterlock:
* @qemuCaps: QEMU capabilities
*
* A capability which requires a different capability being present in order
* for libvirt to be able to drive it properly should be processed here.
*/
void
virQEMUCapsInitProcessCapsInterlock(virQEMUCapsPtr qemuCaps)
{
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCKDEV) &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCKDEV_REOPEN) &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_MIGRATION_PARAM_BLOCK_BITMAP_MAPPING))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_INCREMENTAL_BACKUP);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_USB_STORAGE) &&
!virQEMUCapsGet(qemuCaps, QEMU_CAPS_USB_STORAGE_WERROR)) {
virQEMUCapsClear(qemuCaps, QEMU_CAPS_STORAGE_WERROR);
}
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCKDEV))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_BLOCKDEV_HOSTDEV_SCSI);
}
/**
* virQEMUCapsInitProcessCaps:
* @qemuCaps: QEMU capabilities
*
* Some capability bits are enabled or disabled according to specific logic.
* This function collects all capability processing after the capabilities
* are detected.
*/
static void
virQEMUCapsInitProcessCaps(virQEMUCapsPtr qemuCaps)
{
/* 'intel-iommu' shows up as a device since 2.2.0, but can
* not be used with -device until 2.7.0. Before that it
* requires -machine iommu=on. So we must clear the device
* capability we detected on older QEMUs
*/
if (qemuCaps->version < 2007000 &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_INTEL_IOMMU)) {
virQEMUCapsClear(qemuCaps, QEMU_CAPS_DEVICE_INTEL_IOMMU);
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_IOMMU);
}
/* Prealloc on NVDIMMs is broken on older QEMUs leading to
* user data corruption. If we are dealing with such version
* of QEMU pretend we don't know how to NVDIMM. */
if (qemuCaps->version < 2009000)
virQEMUCapsClear(qemuCaps, QEMU_CAPS_DEVICE_NVDIMM);
if (ARCH_IS_X86(qemuCaps->arch) &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_CPU_MODEL_EXPANSION)) {
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CPU_CACHE);
/* Old x86 QEMU supported migratable:false property in
* query-cpu-model-expansion arguments even though it was not properly
* advertised as a CPU property.
*/
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_CPU_MIGRATABLE) ||
qemuCaps->version < 2012000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_QUERY_CPU_MODEL_EXPANSION_MIGRATABLE);
}
if (ARCH_IS_S390(qemuCaps->arch)) {
/* Legacy assurance for QEMU_CAPS_CCW */
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_CCW) &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_CCW))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CCW);
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_CCW_CSSID_UNRESTRICTED))
virQEMUCapsClear(qemuCaps, QEMU_CAPS_DEVICE_VFIO_CCW);
}
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_CPU_UNAVAILABLE_FEATURES))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CANONICAL_CPU_FEATURES);
/* To avoid guest ABI regression, blockdev shall be enabled only when
* we are able to pass the custom 'device_id' for SCSI disks and cdroms. */
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCK_FILE_AUTO_READONLY_DYNAMIC) &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_SCSI_DISK_DEVICE_ID) &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_SAVEVM_MONITOR_NODES))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_BLOCKDEV);
/* We can't probe "esp" as a type via virQEMUCapsObjectTypes
* array as it is only usable when builtin to the machine type
*/
if (qemuCaps->arch == VIR_ARCH_SPARC ||
qemuCaps->arch == VIR_ARCH_M68K ||
qemuCaps->arch == VIR_ARCH_MIPS)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_SCSI_NCR53C90);
virQEMUCapsInitProcessCapsInterlock(qemuCaps);
}
static int
virQEMUCapsProbeQMPSchemaCapabilities(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
struct virQEMUCapsStringFlags *entry;
virJSONValuePtr schemareply;
GHashTable *schema = NULL;
size_t i;
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_QMP_SCHEMA))
return 0;
if (!(schemareply = qemuMonitorQueryQMPSchema(mon)))
return -1;
if (!(schema = virQEMUQAPISchemaConvert(schemareply)))
return -1;
schemareply = NULL;
for (i = 0; i < G_N_ELEMENTS(virQEMUCapsQMPSchemaQueries); i++) {
entry = virQEMUCapsQMPSchemaQueries + i;
if (virQEMUQAPISchemaPathExists(entry->value, schema))
virQEMUCapsSet(qemuCaps, entry->flag);
}
/* probe also for basic event support */
for (i = 0; i < G_N_ELEMENTS(virQEMUCapsEvents); i++) {
entry = virQEMUCapsEvents + i;
if (virQEMUQAPISchemaPathExists(entry->value, schema))
virQEMUCapsSet(qemuCaps, entry->flag);
}
virHashFree(schema);
return 0;
}
#define QEMU_MIN_MAJOR 1
#define QEMU_MIN_MINOR 5
#define QEMU_MIN_MICRO 0
virDomainVirtType
virQEMUCapsGetVirtType(virQEMUCapsPtr qemuCaps)
{
virDomainVirtType type;
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM))
type = VIR_DOMAIN_VIRT_KVM;
else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_TCG))
type = VIR_DOMAIN_VIRT_QEMU;
else
type = VIR_DOMAIN_VIRT_NONE;
return type;
}
int
virQEMUCapsInitQMPMonitor(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
int major, minor, micro;
g_autofree char *package = NULL;
virQEMUCapsAccelPtr accel;
virDomainVirtType type;
/* @mon is supposed to be locked by callee */
if (qemuMonitorGetVersion(mon, &major, &minor, &micro, &package) < 0)
return -1;
VIR_DEBUG("Got version %d.%d.%d (%s)",
major, minor, micro, NULLSTR(package));
if (major < QEMU_MIN_MAJOR ||
(major == QEMU_MIN_MAJOR && minor < QEMU_MIN_MINOR)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("QEMU version >= %d.%d.%d is required, but %d.%d.%d found"),
QEMU_MIN_MAJOR, QEMU_MIN_MINOR, QEMU_MIN_MICRO,
major, minor, micro);
return -1;
}
qemuCaps->version = major * 1000000 + minor * 1000 + micro;
qemuCaps->package = g_steal_pointer(&package);
if (virQEMUCapsInitQMPArch(qemuCaps, mon) < 0)
return -1;
virQEMUCapsInitQMPBasicArch(qemuCaps);
/* initiate all capabilities based on qemu version */
virQEMUCapsInitQMPVersionCaps(qemuCaps);
if (virQEMUCapsProbeQMPCommands(qemuCaps, mon) < 0)
return -1;
/* Some capabilities may differ depending on KVM state */
if (virQEMUCapsProbeQMPKVMState(qemuCaps, mon) < 0)
return -1;
type = virQEMUCapsGetVirtType(qemuCaps);
accel = virQEMUCapsGetAccel(qemuCaps, type);
if (virQEMUCapsProbeQMPEvents(qemuCaps, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPObjectTypes(qemuCaps, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPDeviceProperties(qemuCaps, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPObjectProperties(qemuCaps, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPMachineTypes(qemuCaps, type, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPMachineProps(qemuCaps, type, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPCPUDefinitions(qemuCaps, accel, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPTPM(qemuCaps, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPCommandLine(qemuCaps, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPMigrationCapabilities(qemuCaps, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPSchemaCapabilities(qemuCaps, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPGICCapabilities(qemuCaps, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPSEVCapabilities(qemuCaps, mon) < 0)
return -1;
virQEMUCapsInitProcessCaps(qemuCaps);
/* The following probes rely on other previously probed capabilities.
* No capabilities bits should be set below this point. */
if (virQEMUCapsProbeQMPHostCPU(qemuCaps, accel, mon, type) < 0)
return -1;
return 0;
}
int
virQEMUCapsInitQMPMonitorTCG(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
{
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, VIR_DOMAIN_VIRT_QEMU);
if (virQEMUCapsProbeQMPCPUDefinitions(qemuCaps, accel, mon) < 0)
return -1;
if (virQEMUCapsProbeQMPHostCPU(qemuCaps, accel, mon, VIR_DOMAIN_VIRT_QEMU) < 0)
return -1;
if (virQEMUCapsProbeQMPMachineTypes(qemuCaps, VIR_DOMAIN_VIRT_QEMU, mon) < 0)
return -1;
return 0;
}
#define MESSAGE_ID_CAPS_PROBE_FAILURE "8ae2f3fb-2dbe-498e-8fbd-012d40afa361"
static void
virQEMUCapsLogProbeFailure(const char *binary)
{
virLogMetadata meta[] = {
{ .key = "MESSAGE_ID", .s = MESSAGE_ID_CAPS_PROBE_FAILURE, .iv = 0 },
{ .key = "LIBVIRT_QEMU_BINARY", .s = binary, .iv = 0 },
{ .key = NULL },
};
virLogMessage(&virLogSelf,
VIR_LOG_WARN,
__FILE__, __LINE__, __func__,
meta,
_("Failed to probe capabilities for %s: %s"),
binary, virGetLastErrorMessage());
}
static int
virQEMUCapsInitQMPSingle(virQEMUCapsPtr qemuCaps,
const char *libDir,
uid_t runUid,
gid_t runGid,
bool onlyTCG)
{
g_autoptr(qemuProcessQMP) proc = NULL;
int ret = -1;
if (!(proc = qemuProcessQMPNew(qemuCaps->binary, libDir,
runUid, runGid, onlyTCG)))
goto cleanup;
if (qemuProcessQMPStart(proc) < 0)
goto cleanup;
if (onlyTCG)
ret = virQEMUCapsInitQMPMonitorTCG(qemuCaps, proc->mon);
else
ret = virQEMUCapsInitQMPMonitor(qemuCaps, proc->mon);
cleanup:
if (ret < 0)
virQEMUCapsLogProbeFailure(qemuCaps->binary);
return ret;
}
static int
virQEMUCapsInitQMP(virQEMUCapsPtr qemuCaps,
const char *libDir,
uid_t runUid,
gid_t runGid)
{
if (virQEMUCapsInitQMPSingle(qemuCaps, libDir, runUid, runGid, false) < 0)
return -1;
/*
* If KVM was enabled during the first probe, we need to explicitly probe
* for TCG capabilities by asking the same binary again and turning KVM
* off.
*/
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM) &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_TCG) &&
virQEMUCapsInitQMPSingle(qemuCaps, libDir, runUid, runGid, true) < 0)
return -1;
return 0;
}
virQEMUCapsPtr
virQEMUCapsNewForBinaryInternal(virArch hostArch,
const char *binary,
const char *libDir,
uid_t runUid,
gid_t runGid,
const char *hostCPUSignature,
unsigned int microcodeVersion,
const char *kernelVersion)
{
virQEMUCapsPtr qemuCaps;
struct stat sb;
if (!(qemuCaps = virQEMUCapsNewBinary(binary)))
goto error;
/* We would also want to check faccessat if we cared about ACLs,
* but we don't. */
if (stat(binary, &sb) < 0) {
virReportSystemError(errno, _("Cannot check QEMU binary %s"),
binary);
goto error;
}
qemuCaps->ctime = sb.st_ctime;
/* Make sure the binary we are about to try exec'ing exists.
* Technically we could catch the exec() failure, but that's
* in a sub-process so it's hard to feed back a useful error.
*/
if (!virFileIsExecutable(binary)) {
virReportSystemError(errno, _("QEMU binary %s is not executable"),
binary);
goto error;
}
if (virFileExists(QEMU_MODDIR)) {
if (stat(QEMU_MODDIR, &sb) < 0) {
virReportSystemError(errno, _("Cannot check QEMU module directory %s"),
QEMU_MODDIR);
goto error;
}
qemuCaps->modDirMtime = sb.st_mtime;
}
if (virQEMUCapsInitQMP(qemuCaps, libDir, runUid, runGid) < 0)
goto error;
qemuCaps->libvirtCtime = virGetSelfLastChanged();
qemuCaps->libvirtVersion = LIBVIR_VERSION_NUMBER;
virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_KVM);
virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_QEMU);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
qemuCaps->hostCPUSignature = g_strdup(hostCPUSignature);
qemuCaps->microcodeVersion = microcodeVersion;
qemuCaps->kernelVersion = g_strdup(kernelVersion);
qemuCaps->kvmSupportsNesting = virQEMUCapsKVMSupportsNesting();
qemuCaps->kvmSupportsSecureGuest = virQEMUCapsKVMSupportsSecureGuest();
}
return qemuCaps;
error:
virObjectUnref(qemuCaps);
return NULL;
}
static void *
virQEMUCapsNewData(const char *binary,
void *privData)
{
virQEMUCapsCachePrivPtr priv = privData;
return virQEMUCapsNewForBinaryInternal(priv->hostArch,
binary,
priv->libDir,
priv->runUid,
priv->runGid,
priv->hostCPUSignature,
virHostCPUGetMicrocodeVersion(priv->hostArch),
priv->kernelVersion);
}
static void *
virQEMUCapsLoadFile(const char *filename,
const char *binary,
void *privData,
bool *outdated)
{
virQEMUCapsPtr qemuCaps = virQEMUCapsNewBinary(binary);
virQEMUCapsCachePrivPtr priv = privData;
int ret;
if (!qemuCaps)
return NULL;
ret = virQEMUCapsLoadCache(priv->hostArch, qemuCaps, filename, false);
if (ret < 0)
goto error;
if (ret == 1) {
*outdated = true;
goto error;
}
return qemuCaps;
error:
virObjectUnref(qemuCaps);
return NULL;
}
struct virQEMUCapsMachineTypeFilter {
const char *machineType;
virQEMUCapsFlags *flags;
size_t nflags;
};
static const struct virQEMUCapsMachineTypeFilter virQEMUCapsMachineFilter[] = {
/* { "blah", virQEMUCapsMachineBLAHFilter,
G_N_ELEMENTS(virQEMUCapsMachineBLAHFilter) }, */
{ "", NULL, 0 },
};
void
virQEMUCapsFilterByMachineType(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
const char *machineType)
{
size_t i;
if (!machineType)
return;
for (i = 0; i < G_N_ELEMENTS(virQEMUCapsMachineFilter); i++) {
const struct virQEMUCapsMachineTypeFilter *filter = &virQEMUCapsMachineFilter[i];
size_t j;
if (STRNEQ(filter->machineType, machineType))
continue;
for (j = 0; j < filter->nflags; j++)
virQEMUCapsClear(qemuCaps, filter->flags[j]);
}
if (!virQEMUCapsGetMachineHotplugCpus(qemuCaps, virtType, machineType))
virQEMUCapsClear(qemuCaps, QEMU_CAPS_QUERY_HOTPLUGGABLE_CPUS);
}
virFileCacheHandlers qemuCapsCacheHandlers = {
.isValid = virQEMUCapsIsValid,
.newData = virQEMUCapsNewData,
.loadFile = virQEMUCapsLoadFile,
.saveFile = virQEMUCapsSaveFile,
.privFree = virQEMUCapsCachePrivFree,
};
virFileCachePtr
virQEMUCapsCacheNew(const char *libDir,
const char *cacheDir,
uid_t runUid,
gid_t runGid)
{
char *capsCacheDir = NULL;
virFileCachePtr cache = NULL;
virQEMUCapsCachePrivPtr priv = NULL;
struct utsname uts;
capsCacheDir = g_strdup_printf("%s/capabilities", cacheDir);
if (!(cache = virFileCacheNew(capsCacheDir, "xml", &qemuCapsCacheHandlers)))
goto error;
priv = g_new0(virQEMUCapsCachePriv, 1);
virFileCacheSetPriv(cache, priv);
priv->libDir = g_strdup(libDir);
priv->hostArch = virArchFromHost();
if (virHostCPUGetSignature(&priv->hostCPUSignature) < 0)
goto error;
priv->runUid = runUid;
priv->runGid = runGid;
priv->kvmUsable = VIR_TRISTATE_BOOL_ABSENT;
if (uname(&uts) == 0)
priv->kernelVersion = g_strdup_printf("%s %s", uts.release, uts.version);
cleanup:
VIR_FREE(capsCacheDir);
return cache;
error:
virObjectUnref(cache);
cache = NULL;
goto cleanup;
}
virQEMUCapsPtr
virQEMUCapsCacheLookup(virFileCachePtr cache,
const char *binary)
{
virQEMUCapsCachePrivPtr priv = virFileCacheGetPriv(cache);
virQEMUCapsPtr ret = NULL;
priv->microcodeVersion = virHostCPUGetMicrocodeVersion(priv->hostArch);
ret = virFileCacheLookup(cache, binary);
VIR_DEBUG("Returning caps %p for %s", ret, binary);
return ret;
}
virQEMUCapsPtr
virQEMUCapsCacheLookupCopy(virFileCachePtr cache,
virDomainVirtType virtType,
const char *binary,
const char *machineType)
{
virQEMUCapsPtr qemuCaps = virQEMUCapsCacheLookup(cache, binary);
virQEMUCapsPtr ret;
if (!qemuCaps)
return NULL;
ret = virQEMUCapsNewCopy(qemuCaps);
virObjectUnref(qemuCaps);
if (!ret)
return NULL;
virQEMUCapsFilterByMachineType(ret, virtType, machineType);
return ret;
}
/**
* virQEMUCapsCacheLookupDefault:
* @cache: QEMU capabilities cache
* @binary: optional path to QEMU binary
* @archStr: optional guest architecture
* @virttypeStr: optional virt type
* @machine: optional machine type
* @retArch: if non-NULL, guest architecture will be returned here
* @retVirttype: if non-NULL, domain virt type will be returned here
* @retMachine: if non-NULL, canonical machine type will be returned here
*
* Looks up the QEMU binary specified by @binary and @archStr, checks it can
* provide the required @virttypeStr and @machine and returns its capabilities.
* Sensible defaults are used for any argument which is NULL (the function can
* even be called with all NULL arguments).
*
* Returns QEMU capabilities matching the requirements, NULL on error.
*/
virQEMUCapsPtr
virQEMUCapsCacheLookupDefault(virFileCachePtr cache,
const char *binary,
const char *archStr,
const char *virttypeStr,
const char *machine,
virArch *retArch,
virDomainVirtType *retVirttype,
const char **retMachine)
{
int virttype = VIR_DOMAIN_VIRT_NONE;
virArch hostarch = virArchFromHost();
virArch arch = hostarch;
virDomainVirtType capsType;
g_autoptr(virQEMUCaps) qemuCaps = NULL;
virArch arch_from_caps;
g_autofree char *probedbinary = NULL;
if (virttypeStr &&
(virttype = virDomainVirtTypeFromString(virttypeStr)) < 0) {
virReportError(VIR_ERR_INVALID_ARG,
_("unknown virttype: %s"), virttypeStr);
return NULL;
}
if (archStr &&
(arch = virArchFromString(archStr)) == VIR_ARCH_NONE) {
virReportError(VIR_ERR_INVALID_ARG,
_("unknown architecture: %s"), archStr);
return NULL;
}
if (!binary) {
probedbinary = virQEMUCapsGetDefaultEmulator(hostarch, arch);
binary = probedbinary;
}
if (!binary) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unable to find any emulator to serve '%s' architecture"),
archStr);
return NULL;
}
if (!(qemuCaps = virQEMUCapsCacheLookup(cache, binary)))
return NULL;
arch_from_caps = virQEMUCapsGetArch(qemuCaps);
if (arch_from_caps != arch &&
!((ARCH_IS_X86(arch) && ARCH_IS_X86(arch_from_caps)) ||
(ARCH_IS_PPC(arch) && ARCH_IS_PPC(arch_from_caps)) ||
(ARCH_IS_ARM(arch) && ARCH_IS_ARM(arch_from_caps)) ||
(ARCH_IS_S390(arch) && ARCH_IS_S390(arch_from_caps)))) {
virReportError(VIR_ERR_INVALID_ARG,
_("architecture from emulator '%s' doesn't "
"match given architecture '%s'"),
virArchToString(arch_from_caps),
virArchToString(arch));
return NULL;
}
capsType = virQEMUCapsGetVirtType(qemuCaps);
if (virttype == VIR_DOMAIN_VIRT_NONE)
virttype = capsType;
if (virttype == VIR_DOMAIN_VIRT_KVM && capsType == VIR_DOMAIN_VIRT_QEMU) {
virReportError(VIR_ERR_INVALID_ARG,
_("KVM is not supported by '%s' on this host"),
binary);
return NULL;
}
if (machine) {
/* Turn @machine into canonical name */
machine = virQEMUCapsGetCanonicalMachine(qemuCaps, virttype, machine);
if (!virQEMUCapsIsMachineSupported(qemuCaps, virttype, machine)) {
virReportError(VIR_ERR_INVALID_ARG,
_("the machine '%s' is not supported by emulator '%s'"),
machine, binary);
return NULL;
}
} else {
machine = virQEMUCapsGetPreferredMachine(qemuCaps, virttype);
}
if (retArch)
*retArch = arch;
if (retVirttype)
*retVirttype = virttype;
if (retMachine)
*retMachine = machine;
return g_steal_pointer(&qemuCaps);
}
bool
virQEMUCapsSupportsVmport(virQEMUCapsPtr qemuCaps,
const virDomainDef *def)
{
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_VMPORT_OPT))
return false;
return qemuDomainIsI440FX(def) ||
qemuDomainIsQ35(def) ||
STREQ(def->os.machine, "isapc");
}
/*
* The preferred machine to use if none is listed explicitly
* Note that this may differ from QEMU's own default machine
*/
const char *
virQEMUCapsGetPreferredMachine(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType)
{
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, virtType);
if (!accel->nmachineTypes)
return NULL;
return accel->machineTypes[0].name;
}
static int
virQEMUCapsFillDomainLoaderCaps(virDomainCapsLoaderPtr capsLoader,
bool secure,
virFirmwarePtr *firmwares,
size_t nfirmwares)
{
size_t i;
capsLoader->supported = VIR_TRISTATE_BOOL_YES;
capsLoader->type.report = true;
capsLoader->readonly.report = true;
capsLoader->secure.report = true;
capsLoader->values.values = g_new0(char *, nfirmwares);
for (i = 0; i < nfirmwares; i++) {
const char *filename = firmwares[i]->name;
size_t j;
if (!virFileExists(filename)) {
VIR_DEBUG("loader filename=%s does not exist", filename);
continue;
}
/* Put only unique FW images onto the list */
for (j = 0; j < capsLoader->values.nvalues; j++) {
if (STREQ(filename, capsLoader->values.values[j]))
break;
}
if (j != capsLoader->values.nvalues)
continue;
capsLoader->values.values[capsLoader->values.nvalues] = g_strdup(filename);
capsLoader->values.nvalues++;
}
VIR_DOMAIN_CAPS_ENUM_SET(capsLoader->type,
VIR_DOMAIN_LOADER_TYPE_ROM);
VIR_DOMAIN_CAPS_ENUM_SET(capsLoader->type,
VIR_DOMAIN_LOADER_TYPE_PFLASH);
VIR_DOMAIN_CAPS_ENUM_SET(capsLoader->readonly,
VIR_TRISTATE_BOOL_YES,
VIR_TRISTATE_BOOL_NO);
VIR_DOMAIN_CAPS_ENUM_SET(capsLoader->secure,
VIR_TRISTATE_BOOL_NO);
if (secure)
VIR_DOMAIN_CAPS_ENUM_SET(capsLoader->secure,
VIR_TRISTATE_BOOL_YES);
return 0;
}
static int
virQEMUCapsFillDomainOSCaps(virDomainCapsOSPtr os,
const char *machine,
virArch arch,
bool privileged,
virFirmwarePtr *firmwares,
size_t nfirmwares)
{
virDomainCapsLoaderPtr capsLoader = &os->loader;
uint64_t autoFirmwares = 0;
bool secure = false;
virFirmwarePtr *firmwaresAlt = NULL;
size_t nfirmwaresAlt = 0;
int ret = -1;
os->supported = VIR_TRISTATE_BOOL_YES;
os->firmware.report = true;
if (qemuFirmwareGetSupported(machine, arch, privileged,
&autoFirmwares, &secure,
&firmwaresAlt, &nfirmwaresAlt) < 0)
return -1;
if (autoFirmwares & (1ULL << VIR_DOMAIN_OS_DEF_FIRMWARE_BIOS))
VIR_DOMAIN_CAPS_ENUM_SET(os->firmware, VIR_DOMAIN_OS_DEF_FIRMWARE_BIOS);
if (autoFirmwares & (1ULL << VIR_DOMAIN_OS_DEF_FIRMWARE_EFI))
VIR_DOMAIN_CAPS_ENUM_SET(os->firmware, VIR_DOMAIN_OS_DEF_FIRMWARE_EFI);
if (virQEMUCapsFillDomainLoaderCaps(capsLoader, secure,
firmwaresAlt ? firmwaresAlt : firmwares,
firmwaresAlt ? nfirmwaresAlt : nfirmwares) < 0)
goto cleanup;
ret = 0;
cleanup:
virFirmwareFreeList(firmwaresAlt, nfirmwaresAlt);
return ret;
}
static void
virQEMUCapsFillDomainCPUCaps(virQEMUCapsPtr qemuCaps,
virArch hostarch,
virDomainCapsPtr domCaps)
{
if (virQEMUCapsIsCPUModeSupported(qemuCaps, hostarch, domCaps->virttype,
VIR_CPU_MODE_HOST_PASSTHROUGH,
domCaps->machine)) {
domCaps->cpu.hostPassthrough = true;
domCaps->cpu.hostPassthroughMigratable.report = true;
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_CPU_MIGRATABLE)) {
VIR_DOMAIN_CAPS_ENUM_SET(domCaps->cpu.hostPassthroughMigratable,
VIR_TRISTATE_SWITCH_ON);
}
VIR_DOMAIN_CAPS_ENUM_SET(domCaps->cpu.hostPassthroughMigratable,
VIR_TRISTATE_SWITCH_OFF);
}
if (virQEMUCapsIsCPUModeSupported(qemuCaps, hostarch, domCaps->virttype,
VIR_CPU_MODE_MAXIMUM,
domCaps->machine)) {
domCaps->cpu.maximum = true;
domCaps->cpu.maximumMigratable.report = true;
VIR_DOMAIN_CAPS_ENUM_SET(domCaps->cpu.maximumMigratable,
VIR_TRISTATE_SWITCH_ON);
VIR_DOMAIN_CAPS_ENUM_SET(domCaps->cpu.maximumMigratable,
VIR_TRISTATE_SWITCH_OFF);
}
if (virQEMUCapsIsCPUModeSupported(qemuCaps, hostarch, domCaps->virttype,
VIR_CPU_MODE_HOST_MODEL,
domCaps->machine)) {
virCPUDefPtr cpu = virQEMUCapsGetHostModel(qemuCaps, domCaps->virttype,
VIR_QEMU_CAPS_HOST_CPU_REPORTED);
domCaps->cpu.hostModel = virCPUDefCopy(cpu);
}
if (virQEMUCapsIsCPUModeSupported(qemuCaps, hostarch, domCaps->virttype,
VIR_CPU_MODE_CUSTOM,
domCaps->machine)) {
const char *forbidden[] = { "host", NULL };
g_auto(GStrv) models = NULL;
if (virCPUGetModels(domCaps->arch, &models) >= 0) {
domCaps->cpu.custom = virQEMUCapsGetCPUModels(qemuCaps,
domCaps->virttype,
(const char **)models,
forbidden);
} else {
domCaps->cpu.custom = NULL;
}
}
}
struct virQEMUCapsDomainFeatureCapabilityTuple {
virDomainCapsFeature domcap;
virQEMUCapsFlags qemucap;
};
/**
* This maps the qemu features to the entries in <features> of the domain
* capability XML.
* */
static const struct virQEMUCapsDomainFeatureCapabilityTuple domCapsTuples[] = {
{ VIR_DOMAIN_CAPS_FEATURE_IOTHREADS, QEMU_CAPS_OBJECT_IOTHREAD },
{ VIR_DOMAIN_CAPS_FEATURE_VMCOREINFO, QEMU_CAPS_DEVICE_VMCOREINFO },
{ VIR_DOMAIN_CAPS_FEATURE_GENID, QEMU_CAPS_DEVICE_VMGENID },
{ VIR_DOMAIN_CAPS_FEATURE_BACKING_STORE_INPUT, QEMU_CAPS_BLOCKDEV },
{ VIR_DOMAIN_CAPS_FEATURE_BACKUP, QEMU_CAPS_INCREMENTAL_BACKUP },
};
static void
virQEMUCapsFillDomainFeaturesFromQEMUCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsPtr domCaps)
{
size_t i;
for (i = 0; i < G_N_ELEMENTS(domCapsTuples); i++) {
if (virQEMUCapsGet(qemuCaps, domCapsTuples[i].qemucap))
domCaps->features[domCapsTuples[i].domcap] = VIR_TRISTATE_BOOL_YES;
else
domCaps->features[domCapsTuples[i].domcap] = VIR_TRISTATE_BOOL_NO;
}
}
static void
virQEMUCapsFillDomainDeviceDiskCaps(virQEMUCapsPtr qemuCaps,
const char *machine,
virDomainCapsDeviceDiskPtr disk)
{
disk->supported = VIR_TRISTATE_BOOL_YES;
disk->diskDevice.report = true;
disk->bus.report = true;
disk->model.report = true;
/* QEMU supports all of these */
VIR_DOMAIN_CAPS_ENUM_SET(disk->diskDevice,
VIR_DOMAIN_DISK_DEVICE_DISK,
VIR_DOMAIN_DISK_DEVICE_CDROM,
VIR_DOMAIN_DISK_DEVICE_LUN);
/* PowerPC pseries based VMs do not support floppy device */
if (!qemuDomainMachineIsPSeries(machine, qemuCaps->arch)) {
VIR_DOMAIN_CAPS_ENUM_SET(disk->diskDevice, VIR_DOMAIN_DISK_DEVICE_FLOPPY);
VIR_DOMAIN_CAPS_ENUM_SET(disk->bus, VIR_DOMAIN_DISK_BUS_FDC);
}
if (qemuDomainMachineHasBuiltinIDE(machine, qemuCaps->arch))
VIR_DOMAIN_CAPS_ENUM_SET(disk->bus, VIR_DOMAIN_DISK_BUS_IDE);
VIR_DOMAIN_CAPS_ENUM_SET(disk->bus,
VIR_DOMAIN_DISK_BUS_SCSI,
VIR_DOMAIN_DISK_BUS_VIRTIO,
/* VIR_DOMAIN_DISK_BUS_SD */);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_USB_STORAGE))
VIR_DOMAIN_CAPS_ENUM_SET(disk->bus, VIR_DOMAIN_DISK_BUS_USB);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_ICH9_AHCI))
VIR_DOMAIN_CAPS_ENUM_SET(disk->bus, VIR_DOMAIN_DISK_BUS_SATA);
/* disk->model values */
VIR_DOMAIN_CAPS_ENUM_SET(disk->model, VIR_DOMAIN_DISK_MODEL_VIRTIO);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY) ||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL)) {
VIR_DOMAIN_CAPS_ENUM_SET(disk->model,
VIR_DOMAIN_DISK_MODEL_VIRTIO_TRANSITIONAL);
VIR_DOMAIN_CAPS_ENUM_SET(disk->model,
VIR_DOMAIN_DISK_MODEL_VIRTIO_NON_TRANSITIONAL);
}
}
void
virQEMUCapsFillDomainDeviceGraphicsCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsDeviceGraphicsPtr dev)
{
dev->supported = VIR_TRISTATE_BOOL_YES;
dev->type.report = true;
VIR_DOMAIN_CAPS_ENUM_SET(dev->type, VIR_DOMAIN_GRAPHICS_TYPE_SDL);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VNC))
VIR_DOMAIN_CAPS_ENUM_SET(dev->type, VIR_DOMAIN_GRAPHICS_TYPE_VNC);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_SPICE))
VIR_DOMAIN_CAPS_ENUM_SET(dev->type, VIR_DOMAIN_GRAPHICS_TYPE_SPICE);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_EGL_HEADLESS))
VIR_DOMAIN_CAPS_ENUM_SET(dev->type, VIR_DOMAIN_GRAPHICS_TYPE_EGL_HEADLESS);
}
void
virQEMUCapsFillDomainDeviceVideoCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsDeviceVideoPtr dev)
{
dev->supported = VIR_TRISTATE_BOOL_YES;
dev->modelType.report = true;
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_NONE);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VGA))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_VGA);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_CIRRUS_VGA))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_CIRRUS);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VMWARE_SVGA))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_VMVGA);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_QXL))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_QXL);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VIRTIO_GPU))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_VIRTIO);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_BOCHS_DISPLAY))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_BOCHS);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_RAMFB))
VIR_DOMAIN_CAPS_ENUM_SET(dev->modelType, VIR_DOMAIN_VIDEO_TYPE_RAMFB);
}
static void
virQEMUCapsFillDomainDeviceHostdevCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsDeviceHostdevPtr hostdev)
{
bool supportsPassthroughVFIO = qemuHostdevHostSupportsPassthroughVFIO();
hostdev->supported = VIR_TRISTATE_BOOL_YES;
hostdev->mode.report = true;
hostdev->startupPolicy.report = true;
hostdev->subsysType.report = true;
hostdev->capsType.report = true;
hostdev->pciBackend.report = true;
/* VIR_DOMAIN_HOSTDEV_MODE_CAPABILITIES is for containers only */
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->mode,
VIR_DOMAIN_HOSTDEV_MODE_SUBSYS);
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->startupPolicy,
VIR_DOMAIN_STARTUP_POLICY_DEFAULT,
VIR_DOMAIN_STARTUP_POLICY_MANDATORY,
VIR_DOMAIN_STARTUP_POLICY_REQUISITE,
VIR_DOMAIN_STARTUP_POLICY_OPTIONAL);
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->subsysType,
VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI,
VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_PIIX3_USB_UHCI) ||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_PIIX4_USB_UHCI) ||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_USB_EHCI) ||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_ICH9_USB_EHCI1) ||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_VT82C686B_USB_UHCI) ||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_PCI_OHCI) ||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_NEC_USB_XHCI) ||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_QEMU_XHCI)) {
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->subsysType,
VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB);
}
/* No virDomainHostdevCapsType for QEMU */
virDomainCapsEnumClear(&hostdev->capsType);
virDomainCapsEnumClear(&hostdev->pciBackend);
if (supportsPassthroughVFIO &&
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VFIO_PCI)) {
VIR_DOMAIN_CAPS_ENUM_SET(hostdev->pciBackend,
VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT,
VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO);
}
}
void
virQEMUCapsFillDomainDeviceRNGCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsDeviceRNGPtr rng)
{
rng->supported = VIR_TRISTATE_BOOL_YES;
rng->model.report = true;
rng->backendModel.report = true;
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VIRTIO_RNG)) {
VIR_DOMAIN_CAPS_ENUM_SET(rng->model, VIR_DOMAIN_RNG_MODEL_VIRTIO);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL) ||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY)) {
VIR_DOMAIN_CAPS_ENUM_SET(rng->model,
VIR_DOMAIN_RNG_MODEL_VIRTIO_TRANSITIONAL,
VIR_DOMAIN_RNG_MODEL_VIRTIO_NON_TRANSITIONAL);
}
}
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_RNG_EGD))
VIR_DOMAIN_CAPS_ENUM_SET(rng->backendModel, VIR_DOMAIN_RNG_BACKEND_EGD);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_RNG_RANDOM))
VIR_DOMAIN_CAPS_ENUM_SET(rng->backendModel, VIR_DOMAIN_RNG_BACKEND_RANDOM);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_RNG_BUILTIN))
VIR_DOMAIN_CAPS_ENUM_SET(rng->backendModel, VIR_DOMAIN_RNG_BACKEND_BUILTIN);
}
/**
* virQEMUCapsSupportsGICVersion:
* @qemuCaps: QEMU capabilities
* @virtType: domain type
* @version: GIC version
*
* Checks the QEMU binary with capabilities @qemuCaps supports a specific
* GIC version for a domain of type @virtType. If @qemuCaps is NULL, the GIC
* @version is considered unsupported.
*
* Returns: true if the binary supports the requested GIC version, false
* otherwise
*/
bool
virQEMUCapsSupportsGICVersion(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType,
virGICVersion version)
{
size_t i;
if (!qemuCaps)
return false;
for (i = 0; i < qemuCaps->ngicCapabilities; i++) {
virGICCapabilityPtr cap = &(qemuCaps->gicCapabilities[i]);
if (cap->version != version)
continue;
if (virtType == VIR_DOMAIN_VIRT_KVM &&
cap->implementation & VIR_GIC_IMPLEMENTATION_KERNEL)
return true;
if (virtType == VIR_DOMAIN_VIRT_QEMU &&
cap->implementation & VIR_GIC_IMPLEMENTATION_EMULATED)
return true;
}
return false;
}
/**
* virQEMUCapsFillDomainFeatureGICCaps:
* @qemuCaps: QEMU capabilities
* @domCaps: domain capabilities
*
* Take the information about GIC capabilities that has been obtained
* using the 'query-gic-capabilities' QMP command and stored in @qemuCaps
* and convert it to a form suitable for @domCaps.
*
* @qemuCaps contains complete information about the GIC capabilities for
* the corresponding QEMU binary, stored as custom objects; @domCaps, on
* the other hand, should only contain information about the GIC versions
* available for the specific combination of architecture, machine type
* and virtualization type. Moreover, a common format is used to store
* information about enumerations in @domCaps, so further processing is
* required.
*/
static void
virQEMUCapsFillDomainFeatureGICCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsPtr domCaps)
{
virDomainCapsFeatureGICPtr gic = &domCaps->gic;
virGICVersion version;
gic->supported = VIR_TRISTATE_BOOL_NO;
if (!qemuDomainMachineIsARMVirt(domCaps->machine, domCaps->arch))
return;
for (version = VIR_GIC_VERSION_LAST - 1;
version > VIR_GIC_VERSION_NONE;
version--) {
if (!virQEMUCapsSupportsGICVersion(qemuCaps,
domCaps->virttype,
version))
continue;
gic->supported = VIR_TRISTATE_BOOL_YES;
gic->version.report = true;
VIR_DOMAIN_CAPS_ENUM_SET(gic->version,
version);
}
}
/**
* virQEMUCapsFillDomainFeatureSEVCaps:
* @qemuCaps: QEMU capabilities
* @domCaps: domain capabilities
*
* Take the information about SEV capabilities that has been obtained
* using the 'query-sev-capabilities' QMP command and stored in @qemuCaps
* and convert it to a form suitable for @domCaps.
*/
static void
virQEMUCapsFillDomainFeatureSEVCaps(virQEMUCapsPtr qemuCaps,
virDomainCapsPtr domCaps)
{
virSEVCapability *cap = qemuCaps->sevCapabilities;
if (!cap)
return;
domCaps->sev = g_new0(virSEVCapability, 1);
domCaps->sev->pdh = g_strdup(cap->pdh);
domCaps->sev->cert_chain = g_strdup(cap->cert_chain);
domCaps->sev->cbitpos = cap->cbitpos;
domCaps->sev->reduced_phys_bits = cap->reduced_phys_bits;
}
int
virQEMUCapsFillDomainCaps(virQEMUCapsPtr qemuCaps,
virArch hostarch,
virDomainCapsPtr domCaps,
bool privileged,
virFirmwarePtr *firmwares,
size_t nfirmwares)
{
virDomainCapsOSPtr os = &domCaps->os;
virDomainCapsDeviceDiskPtr disk = &domCaps->disk;
virDomainCapsDeviceHostdevPtr hostdev = &domCaps->hostdev;
virDomainCapsDeviceGraphicsPtr graphics = &domCaps->graphics;
virDomainCapsDeviceVideoPtr video = &domCaps->video;
virDomainCapsDeviceRNGPtr rng = &domCaps->rng;
virQEMUCapsFillDomainFeaturesFromQEMUCaps(qemuCaps, domCaps);
domCaps->maxvcpus = virQEMUCapsGetMachineMaxCpus(qemuCaps,
domCaps->virttype,
domCaps->machine);
if (domCaps->virttype == VIR_DOMAIN_VIRT_KVM) {
int hostmaxvcpus;
if ((hostmaxvcpus = virHostCPUGetKVMMaxVCPUs()) < 0)
return -1;
domCaps->maxvcpus = MIN(domCaps->maxvcpus, hostmaxvcpus);
}
if (virQEMUCapsFillDomainOSCaps(os,
domCaps->machine,
domCaps->arch,
privileged,
firmwares, nfirmwares) < 0)
return -1;
virQEMUCapsFillDomainCPUCaps(qemuCaps, hostarch, domCaps);
virQEMUCapsFillDomainDeviceDiskCaps(qemuCaps, domCaps->machine, disk);
virQEMUCapsFillDomainDeviceGraphicsCaps(qemuCaps, graphics);
virQEMUCapsFillDomainDeviceVideoCaps(qemuCaps, video);
virQEMUCapsFillDomainDeviceHostdevCaps(qemuCaps, hostdev);
virQEMUCapsFillDomainDeviceRNGCaps(qemuCaps, rng);
virQEMUCapsFillDomainFeatureGICCaps(qemuCaps, domCaps);
virQEMUCapsFillDomainFeatureSEVCaps(qemuCaps, domCaps);
return 0;
}
void
virQEMUCapsSetMicrocodeVersion(virQEMUCapsPtr qemuCaps,
unsigned int microcodeVersion)
{
qemuCaps->microcodeVersion = microcodeVersion;
}
static void
virQEMUCapsStripMachineAliasesForVirtType(virQEMUCapsPtr qemuCaps,
virDomainVirtType virtType)
{
virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, virtType);
size_t i;
for (i = 0; i < accel->nmachineTypes; i++) {
virQEMUCapsMachineTypePtr mach = &accel->machineTypes[i];
g_autofree char *name = g_steal_pointer(&mach->alias);
if (name) {
virQEMUCapsAddMachine(qemuCaps, virtType, name, NULL, mach->defaultCPU,
mach->maxCpus, mach->hotplugCpus, mach->qemuDefault,
mach->numaMemSupported, mach->defaultRAMid,
mach->deprecated);
}
}
}
/**
* virQEMUCapsStripMachineAliases:
* @qemuCaps: capabilities object to process
*
* Replace all aliases by the copy of the machine type they point to without
* actually having to modify the name. This allows us to add tests with the
* aliased machine without having to change the output files all the time.
*
* Remove all aliases so that the tests depending on the latest capabilities
* file can be stable when new files are added.
*/
void
virQEMUCapsStripMachineAliases(virQEMUCapsPtr qemuCaps)
{
virQEMUCapsStripMachineAliasesForVirtType(qemuCaps, VIR_DOMAIN_VIRT_KVM);
virQEMUCapsStripMachineAliasesForVirtType(qemuCaps, VIR_DOMAIN_VIRT_QEMU);
}
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