Also known as Paravirtualization level. 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 QEMU knows this as KVM_CPUID_SIGNATURE (0x40000000) in kvm on linux. This does not provide vendor support in tcg yet. Signed-off-by: Don Slutz <d...@cloudswitch.com> --- target-i386/cpu.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/target-i386/cpu.c b/target-i386/cpu.c index e5deca2..bf6faed 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -1650,6 +1650,21 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, index = env->cpuid_xlevel; } } + } else if (index & 0x40000000) { + if (env->cpuid_hv_level_set) { + uint32_t real_level = env->cpuid_hv_level; + + /* Handle Hypervisor CPUIDs */ + if (real_level < 0x40000000) { + real_level = 0x40000000; + } + if (index > real_level) { + index = real_level; + } + } else { + if (index > env->cpuid_level) + index = env->cpuid_level; + } } else { if (index > env->cpuid_level) index = env->cpuid_level; @@ -1788,6 +1803,18 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, *edx = 0; } break; + case 0x40000000: + *eax = env->cpuid_hv_level; + *ebx = 0; + *ecx = 0; + *edx = 0; + break; + case 0x40000001: + *eax = env->cpuid_kvm_features; + *ebx = 0; + *ecx = 0; + *edx = 0; + break; case 0x80000000: *eax = env->cpuid_xlevel; *ebx = env->cpuid_vendor1; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
