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kvm: make hyperv vapic assist page migratable

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Signed-off-by: Vadim Rozenfeld <vrozenfe@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vadim Rozenfeld 2014-01-24 00:40:48 +11:00 committed by Paolo Bonzini
parent 1c90ef2619
commit 5ef68987e5
3 changed files with 32 additions and 1 deletions
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1
target-i386/cpu.h
View File

@ -864,6 +864,7 @@ typedef struct CPUX86State {
uint64_t msr_gp_evtsel[MAX_GP_COUNTERS];
uint64_t msr_hv_hypercall;
uint64_t msr_hv_guest_os_id;
uint64_t msr_hv_vapic;
/* exception/interrupt handling */
int error_code;

10
target-i386/kvm.c
View File

@ -1236,7 +1236,8 @@ static int kvm_put_msrs(X86CPU *cpu, int level)
env->msr_hv_hypercall);
}
if (has_msr_hv_vapic) {
kvm_msr_entry_set(&msrs[n++], HV_X64_MSR_APIC_ASSIST_PAGE, 0);
kvm_msr_entry_set(&msrs[n++], HV_X64_MSR_APIC_ASSIST_PAGE,
env->msr_hv_vapic);
}
/* Note: MSR_IA32_FEATURE_CONTROL is written separately, see
@ -1526,6 +1527,10 @@ static int kvm_get_msrs(X86CPU *cpu)
msrs[n++].index = HV_X64_MSR_HYPERCALL;
msrs[n++].index = HV_X64_MSR_GUEST_OS_ID;
}
if (has_msr_hv_vapic) {
msrs[n++].index = HV_X64_MSR_APIC_ASSIST_PAGE;
}
msr_data.info.nmsrs = n;
ret = kvm_vcpu_ioctl(CPU(cpu), KVM_GET_MSRS, &msr_data);
if (ret < 0) {
@ -1639,6 +1644,9 @@ static int kvm_get_msrs(X86CPU *cpu)
case HV_X64_MSR_GUEST_OS_ID:
env->msr_hv_guest_os_id = msrs[i].data;
break;
case HV_X64_MSR_APIC_ASSIST_PAGE:
env->msr_hv_vapic = msrs[i].data;
break;
}
}

22
target-i386/machine.c
View File

@ -574,6 +574,25 @@ static const VMStateDescription vmstate_msr_hypercall_hypercall = {
}
};
static bool hyperv_vapic_enable_needed(void *opaque)
{
X86CPU *cpu = opaque;
CPUX86State *env = &cpu->env;
return env->msr_hv_vapic != 0;
}
static const VMStateDescription vmstate_msr_hyperv_vapic = {
.name = "cpu/msr_hyperv_vapic",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT64(env.msr_hv_vapic, X86CPU),
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_x86_cpu = {
.name = "cpu",
.version_id = 12,
@ -711,6 +730,9 @@ const VMStateDescription vmstate_x86_cpu = {
}, {
.vmsd = &vmstate_msr_hypercall_hypercall,
.needed = hyperv_hypercall_enable_needed,
}, {
.vmsd = &vmstate_msr_hyperv_vapic,
.needed = hyperv_vapic_enable_needed,
} , {
/* empty */
}