mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-08-05 08:23:48 +00:00
c661b675f1
Instead of relying on substring search, tokenize the input and process each CPU flag separately. This ensures CPU flag detection will continue to work correctly even if we start looking for CPU flags whose name might appear as part of other CPU flags' names. The result of processing is stored in a virBitmap, which means we don't have to parse /proc/cpuinfo in its entirety for each single CPU flag we want to check. Moreover, use of the newly-introduced virHostValidateCPUFlag enumeration ensures we don't go looking for random CPU flags which might actually be simple typos.
106 lines
4.0 KiB
C
106 lines
4.0 KiB
C
/*
|
|
* virt-host-validate-qemu.c: Sanity check a QEMU hypervisor host
|
|
*
|
|
* Copyright (C) 2012 Red Hat, Inc.
|
|
*
|
|
* 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 <unistd.h>
|
|
|
|
#include "virt-host-validate-qemu.h"
|
|
#include "virt-host-validate-common.h"
|
|
#include "virbitmap.h"
|
|
|
|
int virHostValidateQEMU(void)
|
|
{
|
|
virBitmapPtr flags;
|
|
int ret = 0;
|
|
|
|
virHostMsgCheck("QEMU", "%s", ("for hardware virtualization"));
|
|
|
|
flags = virHostValidateGetCPUFlags();
|
|
|
|
if (flags &&
|
|
(virBitmapIsBitSet(flags, VIR_HOST_VALIDATE_CPU_FLAG_SVM) ||
|
|
virBitmapIsBitSet(flags, VIR_HOST_VALIDATE_CPU_FLAG_VMX))) {
|
|
virHostMsgPass();
|
|
if (virHostValidateDeviceExists("QEMU", "/dev/kvm",
|
|
VIR_HOST_VALIDATE_FAIL,
|
|
_("Check that the 'kvm-intel' or 'kvm-amd' modules are "
|
|
"loaded & the BIOS has enabled virtualization")) < 0)
|
|
ret = -1;
|
|
else if (virHostValidateDeviceAccessible("QEMU", "/dev/kvm",
|
|
VIR_HOST_VALIDATE_FAIL,
|
|
_("Check /dev/kvm is world writable or you are in "
|
|
"a group that is allowed to access it")) < 0)
|
|
ret = -1;
|
|
} else {
|
|
virHostMsgFail(VIR_HOST_VALIDATE_WARN,
|
|
_("Only emulated CPUs are available, performance will be significantly limited"));
|
|
}
|
|
|
|
virBitmapFree(flags);
|
|
|
|
if (virHostValidateDeviceExists("QEMU", "/dev/vhost-net",
|
|
VIR_HOST_VALIDATE_WARN,
|
|
_("Load the 'vhost_net' module to improve performance "
|
|
"of virtio networking")) < 0)
|
|
ret = -1;
|
|
|
|
if (virHostValidateDeviceExists("QEMU", "/dev/net/tun",
|
|
VIR_HOST_VALIDATE_FAIL,
|
|
_("Load the 'tun' module to enable networking for QEMU guests")) < 0)
|
|
ret = -1;
|
|
|
|
if (virHostValidateCGroupController("QEMU", "memory",
|
|
VIR_HOST_VALIDATE_WARN,
|
|
"MEMCG") < 0)
|
|
ret = -1;
|
|
|
|
if (virHostValidateCGroupController("QEMU", "cpu",
|
|
VIR_HOST_VALIDATE_WARN,
|
|
"CGROUP_CPU") < 0)
|
|
ret = -1;
|
|
|
|
if (virHostValidateCGroupController("QEMU", "cpuacct",
|
|
VIR_HOST_VALIDATE_WARN,
|
|
"CGROUP_CPUACCT") < 0)
|
|
ret = -1;
|
|
|
|
if (virHostValidateCGroupController("QEMU", "cpuset",
|
|
VIR_HOST_VALIDATE_WARN,
|
|
"CPUSETS") < 0)
|
|
ret = -1;
|
|
|
|
if (virHostValidateCGroupController("QEMU", "devices",
|
|
VIR_HOST_VALIDATE_WARN,
|
|
"CGROUP_DEVICES") < 0)
|
|
ret = -1;
|
|
|
|
if (virHostValidateCGroupController("QEMU", "blkio",
|
|
VIR_HOST_VALIDATE_WARN,
|
|
"BLK_CGROUP") < 0)
|
|
ret = -1;
|
|
|
|
if (virHostValidateIOMMU("QEMU",
|
|
VIR_HOST_VALIDATE_WARN) < 0)
|
|
ret = -1;
|
|
|
|
return ret;
|
|
}
|