Patchwork [v3,08/17] target-i386: Add Hypervisor vendor.

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Submitter Don Slutz
Date Sept. 17, 2012, 2 p.m.
Message ID <1347890467-9728-9-git-send-email-Don@CloudSwitch.com>
Download mbox | patch
Permalink /patch/184418/
State New
Headers show

Comments

Don Slutz - Sept. 17, 2012, 2 p.m.
Also known as Paravirtualization vendor.
This is EBX, ECX, EDX data for 0x40000000.

QEMU knows this is KVM_CPUID_SIGNATURE (0x40000000).

This 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.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

Patch

diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 05c0848..53ba4cf 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -784,6 +784,9 @@  typedef struct CPUX86State {
     uint32_t cpuid_7_0_ebx;
     /* Hypervisor CPUIDs */
     uint32_t cpuid_hv_level;
+    uint32_t cpuid_hv_vendor1;
+    uint32_t cpuid_hv_vendor2;
+    uint32_t cpuid_hv_vendor3;
 
     /* MTRRs */
     uint64_t mtrr_fixed[11];