mirror of https://gitee.com/openkylin/libvirt.git
135 lines
4.8 KiB
C
135 lines
4.8 KiB
C
/*
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* virt-host-validate-qemu.c: Sanity check a QEMU hypervisor host
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*
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* Copyright (C) 2012 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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#include <config.h>
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#include <unistd.h>
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#include "virt-host-validate-qemu.h"
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#include "virt-host-validate-common.h"
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#include "virarch.h"
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#include "virbitmap.h"
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int virHostValidateQEMU(void)
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{
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virBitmapPtr flags;
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int ret = 0;
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bool hasHwVirt = false;
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bool hasVirtFlag = false;
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virArch arch = virArchFromHost();
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const char *kvmhint = _("Check that CPU and firmware supports virtualization "
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"and kvm module is loaded");
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if (!(flags = virHostValidateGetCPUFlags()))
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return -1;
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switch ((int)arch) {
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case VIR_ARCH_I686:
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case VIR_ARCH_X86_64:
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hasVirtFlag = true;
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kvmhint = _("Check that the 'kvm-intel' or 'kvm-amd' modules are "
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"loaded & the BIOS has enabled virtualization");
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if (virBitmapIsBitSet(flags, VIR_HOST_VALIDATE_CPU_FLAG_SVM) ||
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virBitmapIsBitSet(flags, VIR_HOST_VALIDATE_CPU_FLAG_VMX))
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hasHwVirt = true;
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break;
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case VIR_ARCH_S390:
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case VIR_ARCH_S390X:
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hasVirtFlag = true;
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if (virBitmapIsBitSet(flags, VIR_HOST_VALIDATE_CPU_FLAG_SIE))
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hasHwVirt = true;
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break;
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default:
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hasHwVirt = false;
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}
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if (hasVirtFlag) {
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virHostMsgCheck("QEMU", "%s", _("for hardware virtualization"));
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if (hasHwVirt) {
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virHostMsgPass();
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} else {
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virHostMsgFail(VIR_HOST_VALIDATE_FAIL,
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_("Only emulated CPUs are available, performance will be significantly limited"));
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ret = -1;
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}
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}
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if (hasHwVirt || !hasVirtFlag) {
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if (virHostValidateDeviceExists("QEMU", "/dev/kvm",
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VIR_HOST_VALIDATE_FAIL,
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kvmhint) <0)
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ret = -1;
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else if (virHostValidateDeviceAccessible("QEMU", "/dev/kvm",
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VIR_HOST_VALIDATE_FAIL,
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_("Check /dev/kvm is world writable or you are in "
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"a group that is allowed to access it")) < 0)
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ret = -1;
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}
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virBitmapFree(flags);
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if (virHostValidateDeviceExists("QEMU", "/dev/vhost-net",
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VIR_HOST_VALIDATE_WARN,
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_("Load the 'vhost_net' module to improve performance "
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"of virtio networking")) < 0)
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ret = -1;
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if (virHostValidateDeviceExists("QEMU", "/dev/net/tun",
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VIR_HOST_VALIDATE_FAIL,
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_("Load the 'tun' module to enable networking for QEMU guests")) < 0)
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ret = -1;
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if (virHostValidateCGroupController("QEMU", "memory",
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VIR_HOST_VALIDATE_WARN,
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"MEMCG") < 0)
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ret = -1;
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if (virHostValidateCGroupController("QEMU", "cpu",
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VIR_HOST_VALIDATE_WARN,
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"CGROUP_CPU") < 0)
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ret = -1;
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if (virHostValidateCGroupController("QEMU", "cpuacct",
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VIR_HOST_VALIDATE_WARN,
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"CGROUP_CPUACCT") < 0)
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ret = -1;
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if (virHostValidateCGroupController("QEMU", "cpuset",
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VIR_HOST_VALIDATE_WARN,
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"CPUSETS") < 0)
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ret = -1;
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if (virHostValidateCGroupController("QEMU", "devices",
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VIR_HOST_VALIDATE_WARN,
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"CGROUP_DEVICES") < 0)
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ret = -1;
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if (virHostValidateCGroupController("QEMU", "blkio",
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VIR_HOST_VALIDATE_WARN,
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"BLK_CGROUP") < 0)
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ret = -1;
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if (virHostValidateIOMMU("QEMU",
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VIR_HOST_VALIDATE_WARN) < 0)
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ret = -1;
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return ret;
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}
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