diff options
| author | ZhuangYanying <ann.zhuangyanying@huawei.com> | 2016-11-04 16:16:38 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-11-10 16:01:06 +0100 |
| commit | 5122787580ad7fc8f8540c73cd33612604172607 (patch) | |
| tree | 6f2797cf9593194cba4a31872194df852f06eb30 /target-i386 | |
| parent | 004c8e0090025b4fde4e99fbc5a81049be8f79d1 (diff) | |
target-i386/machine: fix migrate faile because of Hyper-V HV_X64_MSR_VP_RUNTIME
Hyper-V HV_X64_MSR_VP_RUNTIME was introduced in linux-4.4 + qemu-2.5.
As long as the KVM module supports, qemu will save / load the
vmstate_msr_hyperv_runtime register during the migration.
Regardless of whether the hyperv_runtime configuration of x86_cpu_properties is
enabled.
The qemu-2.3 does not support this feature, of course, failed to migrate.
linux-BGSfqC:/home/qemu # ./x86_64-softmmu/qemu-system-x86_64 --enable-kvm \
-nodefaults -machine pc-i440fx-2.3,accel=kvm,usb=off -smp 4 -m 4096 -drive \
file=/work/suse/sles11sp3.img.bak,format=raw,if=none,id=drive-virtio-disk0,cache=none \
-device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0 \
-vnc :99 -device cirrus-vga,id=video0,vgamem_mb=8,bus=pci.0,addr=0x2 -monitor vc
save_section_header:se->section_id=3,se->idstr:ram,se->instance_id=0,se->version_id=4
save_section_header:se->section_id=0,se->idstr:timer,se->instance_id=0,se->version_id=2
save_section_header:se->section_id=4,se->idstr:cpu_common,se->instance_id=0,se->version_id=1
save_section_header:se->section_id=5,se->idstr:cpu,se->instance_id=0,se->version_id=12
vmstate_subsection_save:vmsd->name:cpu/async_pf_msr
hyperv_runtime_enable_needed:env->msr_hv_runtime=128902811
vmstate_subsection_save:vmsd->name:cpu/msr_hyperv_runtime
Since hyperv_runtime is false, vm will not use hv->runtime_offset, then
vmstate_msr_hyperv_runtime is no need to transfer while migrating.
Signed-off-by: ann.zhuangyanying@huawei.com
Message-Id: <1478247398-5016-1-git-send-email-ann.zhuangyanying@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/machine.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target-i386/machine.c b/target-i386/machine.c index 48037f1575..760f82b6c7 100644 --- a/target-i386/machine.c +++ b/target-i386/machine.c @@ -709,6 +709,10 @@ static bool hyperv_runtime_enable_needed(void *opaque) X86CPU *cpu = opaque; CPUX86State *env = &cpu->env; + if (!cpu->hyperv_runtime) { + return false; + } + return env->msr_hv_runtime != 0; } |