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target-i386: Report hyperv feature words through qom 

This change adds hyperv feature words report through qom rpc.

When VM is configured with hyperv features enabled
libvirt will check that required feature words are set
in cpuid leaf 40000003 through qom request.

Currently qemu does not report hyperv feature words
which prevents windows guests from starting with libvirt.

To avoid conflicting with current hyperv properties all added feature
words cannot be set directly with -cpu +feature yet.

Signed-off-by: Evgeny Yakovlev <eyakovlev@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
CC: Marcelo Tosatti <mtosatti@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Evgeny Yakovlev 2016-06-24 13:49:36 +03:00 committed by Eduardo Habkost
parent d6276d26bd
commit c35bd19a5c
3 changed files with 120 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
target-i386/cpu.c
View File

@ -245,6 +245,47 @@ static const char *kvm_feature_name[] = {
NULL, NULL, NULL, NULL,
};
static const char *hyperv_priv_feature_name[] = {
NULL /* hv_msr_vp_runtime_access */, NULL /* hv_msr_time_refcount_access */,
NULL /* hv_msr_synic_access */, NULL /* hv_msr_stimer_access */,
NULL /* hv_msr_apic_access */, NULL /* hv_msr_hypercall_access */,
NULL /* hv_vpindex_access */, NULL /* hv_msr_reset_access */,
NULL /* hv_msr_stats_access */, NULL /* hv_reftsc_access */,
NULL /* hv_msr_idle_access */, NULL /* hv_msr_frequency_access */,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
};
static const char *hyperv_ident_feature_name[] = {
NULL /* hv_create_partitions */, NULL /* hv_access_partition_id */,
NULL /* hv_access_memory_pool */, NULL /* hv_adjust_message_buffers */,
NULL /* hv_post_messages */, NULL /* hv_signal_events */,
NULL /* hv_create_port */, NULL /* hv_connect_port */,
NULL /* hv_access_stats */, NULL, NULL, NULL /* hv_debugging */,
NULL /* hv_cpu_power_management */, NULL /* hv_configure_profiler */,
NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
};
static const char *hyperv_misc_feature_name[] = {
NULL /* hv_mwait */, NULL /* hv_guest_debugging */,
NULL /* hv_perf_monitor */, NULL /* hv_cpu_dynamic_part */,
NULL /* hv_hypercall_params_xmm */, NULL /* hv_guest_idle_state */,
NULL, NULL,
NULL, NULL, NULL /* hv_guest_crash_msr */, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
};
static const char *svm_feature_name[] = {
"npt", "lbrv", "svm_lock", "nrip_save",
"tsc_scale", "vmcb_clean", "flushbyasid", "decodeassists",
@ -412,6 +453,18 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
.cpuid_eax = KVM_CPUID_FEATURES, .cpuid_reg = R_EAX,
.tcg_features = TCG_KVM_FEATURES,
},
[FEAT_HYPERV_EAX] = {
.feat_names = hyperv_priv_feature_name,
.cpuid_eax = 0x40000003, .cpuid_reg = R_EAX,
},
[FEAT_HYPERV_EBX] = {
.feat_names = hyperv_ident_feature_name,
.cpuid_eax = 0x40000003, .cpuid_reg = R_EBX,
},
[FEAT_HYPERV_EDX] = {
.feat_names = hyperv_misc_feature_name,
.cpuid_eax = 0x40000003, .cpuid_reg = R_EDX,
},
[FEAT_SVM] = {
.feat_names = svm_feature_name,
.cpuid_eax = 0x8000000A, .cpuid_reg = R_EDX,

3
target-i386/cpu.h
View File

@ -440,6 +440,9 @@ typedef enum FeatureWord {
FEAT_8000_0007_EDX, /* CPUID[8000_0007].EDX */
FEAT_C000_0001_EDX, /* CPUID[C000_0001].EDX */
FEAT_KVM, /* CPUID[4000_0001].EAX (KVM_CPUID_FEATURES) */
FEAT_HYPERV_EAX, /* CPUID[4000_0003].EAX */
FEAT_HYPERV_EBX, /* CPUID[4000_0003].EBX */
FEAT_HYPERV_EDX, /* CPUID[4000_0003].EDX */
FEAT_SVM, /* CPUID[8000_000A].EDX */
FEAT_XSAVE, /* CPUID[EAX=0xd,ECX=1].EAX */
FEAT_6_EAX, /* CPUID[6].EAX */

112
target-i386/kvm.c
View File

@ -576,6 +576,64 @@ static int kvm_arch_set_tsc_khz(CPUState *cs)
return 0;
}
static int hyperv_handle_properties(CPUState *cs)
{
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
if (cpu->hyperv_relaxed_timing) {
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_HYPERCALL_AVAILABLE;
}
if (cpu->hyperv_vapic) {
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_HYPERCALL_AVAILABLE;
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_APIC_ACCESS_AVAILABLE;
has_msr_hv_vapic = true;
}
if (cpu->hyperv_time &&
kvm_check_extension(cs->kvm_state, KVM_CAP_HYPERV_TIME) > 0) {
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_HYPERCALL_AVAILABLE;
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_TIME_REF_COUNT_AVAILABLE;
env->features[FEAT_HYPERV_EAX] |= 0x200;
has_msr_hv_tsc = true;
}
if (cpu->hyperv_crash && has_msr_hv_crash) {
env->features[FEAT_HYPERV_EDX] |= HV_X64_GUEST_CRASH_MSR_AVAILABLE;
}
env->features[FEAT_HYPERV_EDX] |= HV_X64_CPU_DYNAMIC_PARTITIONING_AVAILABLE;
if (cpu->hyperv_reset && has_msr_hv_reset) {
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_RESET_AVAILABLE;
}
if (cpu->hyperv_vpindex && has_msr_hv_vpindex) {
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_VP_INDEX_AVAILABLE;
}
if (cpu->hyperv_runtime && has_msr_hv_runtime) {
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_VP_RUNTIME_AVAILABLE;
}
if (cpu->hyperv_synic) {
int sint;
if (!has_msr_hv_synic ||
kvm_vcpu_enable_cap(cs, KVM_CAP_HYPERV_SYNIC, 0)) {
fprintf(stderr, "Hyper-V SynIC is not supported by kernel\n");
return -ENOSYS;
}
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_SYNIC_AVAILABLE;
env->msr_hv_synic_version = HV_SYNIC_VERSION_1;
for (sint = 0; sint < ARRAY_SIZE(env->msr_hv_synic_sint); sint++) {
env->msr_hv_synic_sint[sint] = HV_SYNIC_SINT_MASKED;
}
}
if (cpu->hyperv_stimer) {
if (!has_msr_hv_stimer) {
fprintf(stderr, "Hyper-V timers aren't supported by kernel\n");
return -ENOSYS;
}
env->features[FEAT_HYPERV_EAX] |= HV_X64_MSR_SYNTIMER_AVAILABLE;
}
return 0;
}
static Error *invtsc_mig_blocker;
#define KVM_MAX_CPUID_ENTRIES 100
@ -635,56 +693,14 @@ int kvm_arch_init_vcpu(CPUState *cs)
c = &cpuid_data.entries[cpuid_i++];
c->function = HYPERV_CPUID_FEATURES;
if (cpu->hyperv_relaxed_timing) {
c->eax |= HV_X64_MSR_HYPERCALL_AVAILABLE;
r = hyperv_handle_properties(cs);
if (r) {
return r;
}
if (cpu->hyperv_vapic) {
c->eax |= HV_X64_MSR_HYPERCALL_AVAILABLE;
c->eax |= HV_X64_MSR_APIC_ACCESS_AVAILABLE;
has_msr_hv_vapic = true;
}
if (cpu->hyperv_time &&
kvm_check_extension(cs->kvm_state, KVM_CAP_HYPERV_TIME) > 0) {
c->eax |= HV_X64_MSR_HYPERCALL_AVAILABLE;
c->eax |= HV_X64_MSR_TIME_REF_COUNT_AVAILABLE;
c->eax |= 0x200;
has_msr_hv_tsc = true;
}
if (cpu->hyperv_crash && has_msr_hv_crash) {
c->edx |= HV_X64_GUEST_CRASH_MSR_AVAILABLE;
}
c->edx |= HV_X64_CPU_DYNAMIC_PARTITIONING_AVAILABLE;
if (cpu->hyperv_reset && has_msr_hv_reset) {
c->eax |= HV_X64_MSR_RESET_AVAILABLE;
}
if (cpu->hyperv_vpindex && has_msr_hv_vpindex) {
c->eax |= HV_X64_MSR_VP_INDEX_AVAILABLE;
}
if (cpu->hyperv_runtime && has_msr_hv_runtime) {
c->eax |= HV_X64_MSR_VP_RUNTIME_AVAILABLE;
}
if (cpu->hyperv_synic) {
int sint;
c->eax = env->features[FEAT_HYPERV_EAX];
c->ebx = env->features[FEAT_HYPERV_EBX];
c->edx = env->features[FEAT_HYPERV_EDX];
if (!has_msr_hv_synic ||
kvm_vcpu_enable_cap(cs, KVM_CAP_HYPERV_SYNIC, 0)) {
fprintf(stderr, "Hyper-V SynIC is not supported by kernel\n");
return -ENOSYS;
}
c->eax |= HV_X64_MSR_SYNIC_AVAILABLE;
env->msr_hv_synic_version = HV_SYNIC_VERSION_1;
for (sint = 0; sint < ARRAY_SIZE(env->msr_hv_synic_sint); sint++) {
env->msr_hv_synic_sint[sint] = HV_SYNIC_SINT_MASKED;
}
}
if (cpu->hyperv_stimer) {
if (!has_msr_hv_stimer) {
fprintf(stderr, "Hyper-V timers aren't supported by kernel\n");
return -ENOSYS;
}
c->eax |= HV_X64_MSR_SYNTIMER_AVAILABLE;
}
c = &cpuid_data.entries[cpuid_i++];
c->function = HYPERV_CPUID_ENLIGHTMENT_INFO;
if (cpu->hyperv_relaxed_timing) {