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

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Submitter Don Slutz
Date Sept. 24, 2012, 2:32 p.m.
Message ID <1348497138-2516-16-git-send-email-Don@CloudSwitch.com>
Download mbox | patch
Permalink /patch/186446/
State New
Headers show

Comments

Don Slutz - Sept. 24, 2012, 2:32 p.m.
Signed-off-by: Don Slutz <Don@CloudSwitch.com>
---
 target-i386/kvm.c |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)

Patch

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);