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kvm: Fix eax for cpuid leaf 0x40000000

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Since Linux kernel 3.5, KVM has documented eax for leaf 0x40000000
to be KVM_CPUID_FEATURES:

https://github.com/torvalds/linux/commit/57c22e5f35aa4b9b2fe11f73f3e62bbf9ef36190

But qemu still tries to set it to 0. It would be better to make qemu
and kvm consistent. This patch just fixes this issue.

Signed-off-by: Jidong Xiao <jidong.xiao@gmail.com>
[Include kvm_base in the value. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jidong Xiao
2014-06-04 09:12:04 +02:00
committed by Paolo Bonzini
parent 9b1786829a
commit 79b6f2f651
1 changed files with 1 additions and 1 deletions
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target-i386/kvm.c
+1 -1
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@@ -532,7 +532,7 @@ int kvm_arch_init_vcpu(CPUState *cs)
memcpy(signature, "KVMKVMKVM\0\0\0", 12);
c = &cpuid_data.entries[cpuid_i++];
c->function = KVM_CPUID_SIGNATURE | kvm_base;
c->eax = 0;
c->eax = KVM_CPUID_FEATURES | kvm_base;
c->ebx = signature[0];
c->ecx = signature[1];
c->edx = signature[2];