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authorVadim Rozenfeld <vrozenfe@redhat.com>2011-12-18 22:48:14 +0200
committerMarcelo Tosatti <mtosatti@redhat.com>2012-01-19 08:33:12 -0200
commiteab70139a6772f1735444d4f1daadc7bcfa7dc47 (patch)
tree6fba5b3325b3377e2e2458df307490c2523ac3bf /target-i386
parent28f52cc04d341045e810bd487a478fa9ec5f40be (diff)
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hyper-v: initialize Hyper-V CPUID leaves.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'target-i386')
-rw-r--r--target-i386/kvm.c65
1 files changed, 63 insertions, 2 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 04e65c5..1f56492 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -29,6 +29,7 @@
#include "hw/pc.h"
#include "hw/apic.h"
#include "ioport.h"
+#include "hyperv.h"
//#define DEBUG_KVM
@@ -373,11 +374,16 @@ int kvm_arch_init_vcpu(CPUState *env)
cpuid_i = 0;
/* Paravirtualization CPUIDs */
- memcpy(signature, "KVMKVMKVM\0\0\0", 12);
c = &cpuid_data.entries[cpuid_i++];
memset(c, 0, sizeof(*c));
c->function = KVM_CPUID_SIGNATURE;
- c->eax = 0;
+ if (!hyperv_enabled()) {
+ memcpy(signature, "KVMKVMKVM\0\0\0", 12);
+ c->eax = 0;
+ } else {
+ memcpy(signature, "Microsoft Hv", 12);
+ c->eax = HYPERV_CPUID_MIN;
+ }
c->ebx = signature[0];
c->ecx = signature[1];
c->edx = signature[2];
@@ -388,6 +394,54 @@ int kvm_arch_init_vcpu(CPUState *env)
c->eax = env->cpuid_kvm_features &
kvm_arch_get_supported_cpuid(s, KVM_CPUID_FEATURES, 0, R_EAX);
+ if (hyperv_enabled()) {
+ memcpy(signature, "Hv#1\0\0\0\0\0\0\0\0", 12);
+ c->eax = signature[0];
+
+ c = &cpuid_data.entries[cpuid_i++];
+ memset(c, 0, sizeof(*c));
+ c->function = HYPERV_CPUID_VERSION;
+ c->eax = 0x00001bbc;
+ c->ebx = 0x00060001;
+
+ c = &cpuid_data.entries[cpuid_i++];
+ memset(c, 0, sizeof(*c));
+ c->function = HYPERV_CPUID_FEATURES;
+ if (hyperv_relaxed_timing_enabled()) {
+ c->eax |= HV_X64_MSR_HYPERCALL_AVAILABLE;
+ }
+ if (hyperv_vapic_recommended()) {
+ c->eax |= HV_X64_MSR_HYPERCALL_AVAILABLE;
+ c->eax |= HV_X64_MSR_APIC_ACCESS_AVAILABLE;
+ }
+
+ c = &cpuid_data.entries[cpuid_i++];
+ memset(c, 0, sizeof(*c));
+ c->function = HYPERV_CPUID_ENLIGHTMENT_INFO;
+ if (hyperv_relaxed_timing_enabled()) {
+ c->eax |= HV_X64_RELAXED_TIMING_RECOMMENDED;
+ }
+ if (hyperv_vapic_recommended()) {
+ c->eax |= HV_X64_APIC_ACCESS_RECOMMENDED;
+ }
+ c->ebx = hyperv_get_spinlock_retries();
+
+ c = &cpuid_data.entries[cpuid_i++];
+ memset(c, 0, sizeof(*c));
+ c->function = HYPERV_CPUID_IMPLEMENT_LIMITS;
+ c->eax = 0x40;
+ c->ebx = 0x40;
+
+ c = &cpuid_data.entries[cpuid_i++];
+ memset(c, 0, sizeof(*c));
+ c->function = KVM_CPUID_SIGNATURE_NEXT;
+ memcpy(signature, "KVMKVMKVM\0\0\0", 12);
+ c->eax = 0;
+ c->ebx = signature[0];
+ c->ecx = signature[1];
+ c->edx = signature[2];
+ }
+
has_msr_async_pf_en = c->eax & (1 << KVM_FEATURE_ASYNC_PF);
cpu_x86_cpuid(env, 0, 0, &limit, &unused, &unused, &unused);
@@ -933,6 +987,13 @@ static int kvm_put_msrs(CPUState *env, int level)
kvm_msr_entry_set(&msrs[n++], MSR_KVM_ASYNC_PF_EN,
env->async_pf_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);
+ }
+ if (hyperv_vapic_recommended()) {
+ kvm_msr_entry_set(&msrs[n++], HV_X64_MSR_APIC_ASSIST_PAGE, 0);
+ }
}
if (env->mcg_cap) {
int i;