Commit 516a1a7e authored by Avi Kivity's avatar Avi Kivity
Browse files

KVM: VMX: Flush volatile msrs before emulating rdmsr 



Some msrs (notable MSR_KERNEL_GS_BASE) are held in the processor registers
and need to be flushed to the vcpu struture before they can be read.

This fixes cygwin longjmp() failure on Windows x64.

Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 682edb4c

arch/x86/kvm/vmx.c

+1 −0
Original line number Diff line number Diff line
@@ -903,6 +903,7 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata) 
		data = vmcs_readl(GUEST_SYSENTER_ESP);

		break;

	default:

		vmx_load_host_state(to_vmx(vcpu));

		msr = find_msr_entry(to_vmx(vcpu), msr_index);

		if (msr) {

			data = msr->data;