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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2010-02-03 21:16:37 +0100 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-02-03 19:47:34 -0200 |
| commit | 19ccb8ea1799f6f29ba5bc37d5f18dc8050d4029 (patch) | |
| tree | 9db6ad5c5a420776846e077557c8f90b44d26f5a /target-i386 | |
| parent | aee028b95d1d250a727583a14c864bc95ec27c69 (diff) | |
| download | qemu-19ccb8ea1799f6f29ba5bc37d5f18dc8050d4029.tar.gz | |
KVM: x86: Fix up misreported CPU features
From qemu-kvm: Kernels before 2.6.30 misreported some essential CPU
features via KVM_GET_SUPPORTED_CPUID. Fix them up.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/kvm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index b457b96d46..0d08cd532e 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -99,12 +99,18 @@ uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg) break; case R_EDX: ret = cpuid->entries[i].edx; - if (function == 0x80000001) { + switch (function) { + case 1: + /* KVM before 2.6.30 misreports the following features */ + ret |= CPUID_MTRR | CPUID_PAT | CPUID_MCE | CPUID_MCA; + break; + case 0x80000001: /* On Intel, kvm returns cpuid according to the Intel spec, * so add missing bits according to the AMD spec: */ cpuid_1_edx = kvm_arch_get_supported_cpuid(env, 1, R_EDX); ret |= cpuid_1_edx & 0xdfeff7ff; + break; } break; } |