diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2012-08-28 20:43:56 +0300 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-08-29 10:51:28 -0500 |
| commit | bc9a839d569d4d8532c5c097bf1f4583226e3aa0 (patch) | |
| tree | 721b6c3f7652903f634815a00390c8115fffdc97 /target-i386/kvm.c | |
| parent | 651682dcf54c4f2e07904bd822a97895900f6d8a (diff) | |
kvm: get/set PV EOI MSR
Support get/set of new PV EOI MSR, for migration.
Add an optional section for MSR value - send it
out in case MSR was changed from the default value (0).
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'target-i386/kvm.c')
| -rw-r--r-- | target-i386/kvm.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 696b14a04..ffc294ec3 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -63,6 +63,7 @@ static bool has_msr_star; static bool has_msr_hsave_pa; static bool has_msr_tsc_deadline; static bool has_msr_async_pf_en; +static bool has_msr_pv_eoi_en; static bool has_msr_misc_enable; static int lm_capable_kernel; @@ -455,6 +456,8 @@ int kvm_arch_init_vcpu(CPUX86State *env) has_msr_async_pf_en = c->eax & (1 << KVM_FEATURE_ASYNC_PF); + has_msr_pv_eoi_en = c->eax & (1 << KVM_FEATURE_PV_EOI); + cpu_x86_cpuid(env, 0, 0, &limit, &unused, &unused, &unused); for (i = 0; i <= limit; i++) { @@ -1017,6 +1020,10 @@ static int kvm_put_msrs(CPUX86State *env, int level) kvm_msr_entry_set(&msrs[n++], MSR_KVM_ASYNC_PF_EN, env->async_pf_en_msr); } + if (has_msr_pv_eoi_en) { + kvm_msr_entry_set(&msrs[n++], MSR_KVM_PV_EOI_EN, + env->pv_eoi_en_msr); + } if (hyperv_hypercall_available()) { kvm_msr_entry_set(&msrs[n++], HV_X64_MSR_GUEST_OS_ID, 0); kvm_msr_entry_set(&msrs[n++], HV_X64_MSR_HYPERCALL, 0); @@ -1259,6 +1266,9 @@ static int kvm_get_msrs(CPUX86State *env) if (has_msr_async_pf_en) { msrs[n++].index = MSR_KVM_ASYNC_PF_EN; } + if (has_msr_pv_eoi_en) { + msrs[n++].index = MSR_KVM_PV_EOI_EN; + } if (env->mcg_cap) { msrs[n++].index = MSR_MCG_STATUS; @@ -1338,6 +1348,9 @@ static int kvm_get_msrs(CPUX86State *env) case MSR_KVM_ASYNC_PF_EN: env->async_pf_en_msr = msrs[i].data; break; + case MSR_KVM_PV_EOI_EN: + env->pv_eoi_en_msr = msrs[i].data; + break; } } |