Re: [PATCH] Qemu: Fix eax for cpuid leaf 0x40000000

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Il 04/06/2014 03:10, Jidong Xiao ha scritto:
diff --git a/qemu-2.0.0/target-i386/kvm.c.orig b/qemu-2.0.0/target-i386/kvm.c
index 4389959..b8b282d 100644
--- a/qemu-2.0.0/target-i386/kvm.c.orig
+++ b/qemu-2.0.0/target-i386/kvm.c
@@ -530,7 +530,7 @@ 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;
     c->ebx = signature[0];
     c->ecx = signature[1];
     c->edx = signature[2];

This should actually be "KVM_CPUID_FEATURES | kvm_base", in case Hyper-V leaves are available too. But it is a good catch!

Paolo

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