From: Nicolae Mogoreanu Date: Tue, 21 Feb 2012 21:44:21 +0000 (-0800) Subject: KVM: Ignore the writes to MSR_K7_HWCR(3) X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=a223c313cb13e9ab71051fc5b70610a2829a4082;p=linux-edison.git KVM: Ignore the writes to MSR_K7_HWCR(3) When CPUID Fn8000_0001_EAX reports 0x00100f22 Windows 7 x64 guest tries to set bit 3 in MSRC001_0015 in nt!KiDisableCacheErrataSource and fails. This patch will ignore this step and allow things to move on without having to fake CPUID value. Signed-off-by: Nicolae Mogoreanu Signed-off-by: Avi Kivity --- diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 6866083a48c..32096cf6c6c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1547,6 +1547,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data) case MSR_K7_HWCR: data &= ~(u64)0x40; /* ignore flush filter disable */ data &= ~(u64)0x100; /* ignore ignne emulation enable */ + data &= ~(u64)0x8; /* ignore TLB cache disable */ if (data != 0) { pr_unimpl(vcpu, "unimplemented HWCR wrmsr: 0x%llx\n", data);