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>

1 files changed, 53 insertions, 0 deletions

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 80e1767fe0..4e179b9b95 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -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,