On 06/23/2009 01:20 AM, Andre Przywara wrote:
Linux tries to disable the flush filter on all AMD K8 CPUs. Since KVM does not handle the needed MSR, the injected #GP will panic the Linux kernel. Ignore setting of the HWCR.FFDIS bit in this MSR to let Linux boot with an AMD K8 family guest CPU.Signed-off-by: Andre Przywara<andre.przyw...@amd.com> --- arch/x86/kvm/x86.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5a66bb9..4c19c24 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -796,6 +796,13 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data) case MSR_EFER: set_efer(vcpu, data); break; + case MSR_K7_HWCR: + if (data != 0x40) { + pr_unimpl(vcpu, "unimplemented HWCR wrmsr: 0x%llx\n", + data); + return 1; + } + break;
Won't that printk() if writing a zero? Just mask out that bit. I also see some HWCR handling in svm.c, can probably be removed. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
