libvirt/tests/testutilsqemu.c

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#include <config.h>
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#ifdef WITH_QEMU
# include <stdlib.h>
# include "testutilsqemu.h"
# include "testutils.h"
# include "memory.h"
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# include "cpu_conf.h"
# include "qemu/qemu_driver.h"
# include "qemu/qemu_domain.h"
static virCapsGuestMachinePtr *testQemuAllocMachines(int *nmachines)
{
virCapsGuestMachinePtr *machines;
static const char *const x86_machines[] = {
"pc", "isapc"
};
machines = virCapabilitiesAllocMachines(x86_machines,
ARRAY_CARDINALITY(x86_machines));
if (machines == NULL)
return NULL;
*nmachines = ARRAY_CARDINALITY(x86_machines);
return machines;
}
/* Newer versions of qemu have versioned machine types to allow
* compatibility with older releases.
* The 'pc' machine type is an alias of the newest machine type.
*/
static virCapsGuestMachinePtr *testQemuAllocNewerMachines(int *nmachines)
{
virCapsGuestMachinePtr *machines;
char *canonical;
static const char *const x86_machines[] = {
"pc-0.11", "pc", "pc-0.10", "isapc"
};
if ((canonical = strdup(x86_machines[0])) == NULL)
return NULL;
machines = virCapabilitiesAllocMachines(x86_machines,
ARRAY_CARDINALITY(x86_machines));
if (machines == NULL) {
VIR_FREE(canonical);
return NULL;
}
machines[1]->canonical = canonical;
*nmachines = ARRAY_CARDINALITY(x86_machines);
return machines;
}
static int testQemuDefaultConsoleType(const char *ostype ATTRIBUTE_UNUSED)
{
return VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_SERIAL;
}
static int testQemuAddPPC64Guest(virCapsPtr caps)
{
static const char *machine[] = { "pseries" };
virCapsGuestMachinePtr *machines = NULL;
virCapsGuestPtr guest;
machines = virCapabilitiesAllocMachines(machine, 1);
if (!machines)
goto error;
guest = virCapabilitiesAddGuest(caps, "hvm", "ppc64", 64,
"/usr/bin/qemu-system-ppc64", NULL,
1, machines);
if (!guest)
goto error;
if (!virCapabilitiesAddGuestDomain(guest, "qemu", NULL, NULL, 0, NULL))
goto error;
return 0;
error:
/* No way to free a guest? */
virCapabilitiesFreeMachines(machines, 1);
return -1;
}
virCapsPtr testQemuCapsInit(void) {
virCapsPtr caps;
virCapsGuestPtr guest;
virCapsGuestMachinePtr *machines = NULL;
int nmachines = 0;
static const char *const xen_machines[] = {
"xenner"
};
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static virCPUFeatureDef host_cpu_features[] = {
{ (char *) "lahf_lm", -1 },
{ (char *) "xtpr", -1 },
{ (char *) "cx16", -1 },
{ (char *) "tm2", -1 },
{ (char *) "est", -1 },
{ (char *) "vmx", -1 },
{ (char *) "ds_cpl", -1 },
{ (char *) "pbe", -1 },
{ (char *) "tm", -1 },
{ (char *) "ht", -1 },
{ (char *) "ss", -1 },
{ (char *) "acpi", -1 },
{ (char *) "ds", -1 }
};
static virCPUDef host_cpu = {
VIR_CPU_TYPE_HOST, /* type */
Add support for cpu mode attribute The mode can be either of "custom" (default), "host-model", "host-passthrough". The semantics of each mode is described in the following examples: - guest CPU is a default model with specified topology: <cpu> <topology sockets='1' cores='2' threads='1'/> </cpu> - guest CPU matches selected model: <cpu mode='custom' match='exact'> <model>core2duo</model> </cpu> - guest CPU should be a copy of host CPU as advertised by capabilities XML (this is a short cut for manually copying host CPU specification from capabilities to domain XML): <cpu mode='host-model'/> In case a hypervisor does not support the exact host model, libvirt automatically falls back to a closest supported CPU model and removes/adds features to match host. This behavior can be disabled by <cpu mode='host-model'> <model fallback='forbid'/> </cpu> - the same as previous returned by virDomainGetXMLDesc with VIR_DOMAIN_XML_UPDATE_CPU flag: <cpu mode='host-model' match='exact'> <model fallback='allow'>Penryn</model> --+ <vendor>Intel</vendor> | <topology sockets='2' cores='4' threads='1'/> + copied from <feature policy='require' name='dca'/> | capabilities XML <feature policy='require' name='xtpr'/> | ... --+ </cpu> - guest CPU should be exactly the same as host CPU even in the aspects libvirt doesn't model (such domain cannot be migrated unless both hosts contain exactly the same CPUs): <cpu mode='host-passthrough'/> - the same as previous returned by virDomainGetXMLDesc with VIR_DOMAIN_XML_UPDATE_CPU flag: <cpu mode='host-passthrough' match='minimal'> <model>Penryn</model> --+ copied from caps <vendor>Intel</vendor> | XML but doesn't <topology sockets='2' cores='4' threads='1'/> | describe all <feature policy='require' name='dca'/> | aspects of the <feature policy='require' name='xtpr'/> | actual guest CPU ... --+ </cpu>
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0, /* mode */
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0, /* match */
(char *) "x86_64", /* arch */
(char *) "core2duo", /* model */
0, /* fallback */
(char *) "Intel", /* vendor */
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1, /* sockets */
2, /* cores */
1, /* threads */
ARRAY_CARDINALITY(host_cpu_features), /* nfeatures */
ARRAY_CARDINALITY(host_cpu_features), /* nfeatures_max */
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host_cpu_features /* features */
};
if ((caps = virCapabilitiesNew(host_cpu.arch,
0, 0)) == NULL)
return NULL;
caps->defaultConsoleTargetType = testQemuDefaultConsoleType;
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if ((caps->host.cpu = virCPUDefCopy(&host_cpu)) == NULL ||
(machines = testQemuAllocMachines(&nmachines)) == NULL)
goto cleanup;
qemuDomainSetNamespaceHooks(caps);
if ((guest = virCapabilitiesAddGuest(caps, "hvm", "i686", 32,
"/usr/bin/qemu", NULL,
nmachines, machines)) == NULL ||
!virCapabilitiesAddGuestFeature(guest, "cpuselection", 1, 0))
goto cleanup;
machines = NULL;
if (virCapabilitiesAddGuestDomain(guest,
"qemu",
NULL,
NULL,
0,
NULL) == NULL)
goto cleanup;
if ((machines = testQemuAllocNewerMachines(&nmachines)) == NULL)
goto cleanup;
if ((guest = virCapabilitiesAddGuest(caps, "hvm", "x86_64", 64,
"/usr/bin/qemu-system-x86_64", NULL,
nmachines, machines)) == NULL ||
!virCapabilitiesAddGuestFeature(guest, "cpuselection", 1, 0))
goto cleanup;
machines = NULL;
if (virCapabilitiesAddGuestDomain(guest,
"qemu",
NULL,
NULL,
0,
NULL) == NULL)
goto cleanup;
if ((machines = testQemuAllocMachines(&nmachines)) == NULL)
goto cleanup;
if (virCapabilitiesAddGuestDomain(guest,
"kvm",
"/usr/bin/kvm",
NULL,
nmachines,
machines) == NULL)
goto cleanup;
machines = NULL;
nmachines = ARRAY_CARDINALITY(xen_machines);
if ((machines = virCapabilitiesAllocMachines(xen_machines, nmachines)) == NULL)
goto cleanup;
if ((guest = virCapabilitiesAddGuest(caps, "xen", "x86_64", 64,
"/usr/bin/xenner", NULL,
nmachines, machines)) == NULL)
goto cleanup;
machines = NULL;
if (virCapabilitiesAddGuestDomain(guest,
"kvm",
"/usr/bin/kvm",
NULL,
0,
NULL) == NULL)
goto cleanup;
if (testQemuAddPPC64Guest(caps))
goto cleanup;
if (virTestGetDebug()) {
char *caps_str;
caps_str = virCapabilitiesFormatXML(caps);
if (!caps_str)
goto cleanup;
fprintf(stderr, "QEMU driver capabilities:\n%s", caps_str);
VIR_FREE(caps_str);
}
return caps;
cleanup:
virCapabilitiesFreeMachines(machines, nmachines);
virCapabilitiesFree(caps);
return NULL;
}
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#endif