[v4,03/17] target-i386: Add Hypervisor level.

Message ID 1348171412-23669-4-git-send-email-Don@CloudSwitch.com
State New
Headers show

Commit Message

Don Slutz Sept. 20, 2012, 8:03 p.m.
Also known as Paravirtualization level or maximim cpuid function present in this leaf.
This is just the EAX value for 0x40000000.

QEMU knows this is KVM_CPUID_SIGNATURE (0x40000000).

This is based on:

Microsoft Hypervisor CPUID Leaves:

Linux kernel change starts with:

VMware documention on CPUIDs (Mechanisms to determine if software is
running in a VMware virtual machine):

QEMU has the value HYPERV_CPUID_MIN defined.

Signed-off-by: Don Slutz <Don@CloudSwitch.com>
 target-i386/cpu.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)


diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 5265c5a..05c0848 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -782,6 +782,8 @@  typedef struct CPUX86State {
     uint32_t cpuid_ext4_features;
     /* Flags from CPUID[EAX=7,ECX=0].EBX */
     uint32_t cpuid_7_0_ebx;
+    /* Hypervisor CPUIDs */
+    uint32_t cpuid_hv_level;
     /* MTRRs */
     uint64_t mtrr_fixed[11];