mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-05 18:13:26 -04:00
Code Issues Packages Projects Releases Wiki Activity

KVM: x86: Make CR4.VMXE reserved for the guest

Browse Source 
CR4.VMXE is reserved unless the VMX CPUID bit is set.  On Intel,
it is also tested by vmx_set_cr4, but AMD relies on kvm_valid_cr4,
so fix it.

Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2020-07-08 07:02:50 -04:00
parent b899c13277
commit 53efe527ca
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kvm/x86.h
View File

@@ -391,6 +391,8 @@ bool kvm_vcpu_exit_request(struct kvm_vcpu *vcpu);
__reserved_bits |= X86_CR4_LA57; \
if (!__cpu_has(__c, X86_FEATURE_UMIP)) \
__reserved_bits |= X86_CR4_UMIP; \
if (!__cpu_has(__c, X86_FEATURE_VMX)) \
__reserved_bits |= X86_CR4_VMXE; \
__reserved_bits; \
})