[PATCH v6 15/16] target-i386: Use Hypervisor leaf extra in -machine pc,accel=kvm.

Don Slutz
2012-09-24T14:33:22Z

Signed-off-by: Don Slutz <Don@CloudSwitch.com>
---
target-i386/kvm.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index f8a5177..ff82034 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -454,6 +454,25 @@ int kvm_arch_init_vcpu(CPUX86State *env)
c->ebx = signature[0];
c->ecx = signature[1];
c->edx = signature[2];
+ } else if (env->cpuid_hv_extra != 0) {
+ for (i = KVM_CPUID_FEATURES + 1; i <= env->cpuid_hv_level; i++) {
+ c = &cpuid_data.entries[cpuid_i++];
+ memset(c, 0, sizeof(*c));
+ c->function = i;
+ if (i == env->cpuid_hv_extra) {
+ c->eax = env->cpuid_hv_extra_a;
+ c->ebx = env->cpuid_hv_extra_b;
+ }
+ }
+
+ 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);
--
1.7.1