Commit c79eb775 authored Nov 19, 2019 by Chenyi Qiang Committed by Paolo Bonzini Nov 20, 2019

KVM: nVMX: add CR4_LA57 bit to nested CR4_FIXED1



When L1 guest uses 5-level paging, it fails vm-entry to L2 due to
invalid host-state. It needs to add CR4_LA57 bit to nested CR4_FIXED1
MSR.

Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent cc877670

arch/x86/kvm/vmx/vmx.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -6962,6 +6962,7 @@ static void nested_vmx_cr_fixed1_bits_update(struct kvm_vcpu *vcpu)
		cr4_fixed1_update(X86_CR4_SMAP, ebx, bit(X86_FEATURE_SMAP));
		cr4_fixed1_update(X86_CR4_PKE, ecx, bit(X86_FEATURE_PKU));
		cr4_fixed1_update(X86_CR4_UMIP, ecx, bit(X86_FEATURE_UMIP));
		cr4_fixed1_update(X86_CR4_LA57, ecx, bit(X86_FEATURE_LA57));

		#undef cr4_fixed1_update
		}

Admin message