Patchwork [v3,11/17] target-i386: Use Hypervisor vendor in -machine pc, accel=tcg.

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Submitter Don Slutz
Date Sept. 17, 2012, 2:01 p.m.
Message ID <1347890467-9728-12-git-send-email-Don@CloudSwitch.com>
Download mbox | patch
Permalink /patch/184445/
State New
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Comments

Don Slutz - Sept. 17, 2012, 2:01 p.m.
Also known as Paravirtualization vendor.

This change is based on:

Microsoft Hypervisor CPUID Leaves:
  http://msdn.microsoft.com/en-us/library/windows/hardware/ff542428%28v=vs.85%29.aspx

Linux kernel change starts with:
  http://fixunix.com/kernel/538707-use-cpuid-communicate-hypervisor.html
Also:
  http://lkml.indiana.edu/hypermail/linux/kernel/1205.0/00100.html

VMware documention on CPUIDs (Mechanisms to determine if software is
running in a VMware virtual machine):
  http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458

Signed-off-by: Don Slutz <Don@CloudSwitch.com>
---
 target-i386/cpu.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

Patch

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 5afb188..1b3a472 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1842,9 +1842,9 @@  void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
         break;
     case 0x40000000:
         *eax = env->cpuid_hv_level;
-        *ebx = 0;
-        *ecx = 0;
-        *edx = 0;
+        *ebx = env->cpuid_hv_vendor1;
+        *ecx = env->cpuid_hv_vendor2;
+        *edx = env->cpuid_hv_vendor3;
         break;
     case 0x40000001:
         *eax = env->cpuid_kvm_features;