diff options
| author | Andre Przywara <andre.przywara@amd.com> | 2011-06-10 15:56:28 +0200 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2011-06-20 15:26:21 -0300 |
| commit | 31e8c69697becf5e0b54a6a0cef1d27109d469e9 (patch) | |
| tree | a62d3d6ca528d09106830e7bb2d05a1f687434d9 | |
| parent | 3d39c9593314946258bb334737aa7a4d113731d8 (diff) | |
KVM: Fix XSAVE feature bit enumeration
When iterating through the XSAVE feature enumeration CPUID leaf (0xD)
we should not stop at the first zero EAX, but instead keep scanning
since there are gaps in the enumeration (ECX=1 for instance).
This fixes the proper usage of AVX in KVM guests.
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| -rw-r--r-- | target-i386/kvm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 938e0a3e23..10fb2c4b07 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -416,6 +416,9 @@ int kvm_arch_init_vcpu(CPUState *env) case 0xb: case 0xd: for (j = 0; ; j++) { + if (i == 0xd && j == 64) { + break; + } c->function = i; c->flags = KVM_CPUID_FLAG_SIGNIFCANT_INDEX; c->index = j; @@ -428,7 +431,7 @@ int kvm_arch_init_vcpu(CPUState *env) break; } if (i == 0xd && c->eax == 0) { - break; + continue; } c = &cpuid_data.entries[cpuid_i++]; } |