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KVM: VMX: require INVEPT GLOBAL for EPT 

Without this, we won't be able to do any flushes, so let's just require
it. Should be absent in very strange configurations.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
David Hildenbrand 2017-08-24 20:51:30 +02:00 committed by Paolo Bonzini
parent fdf288bf72
commit f5f51586db
1 changed files with 3 additions and 3 deletions
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6
arch/x86/kvm/vmx.c
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@ -1598,8 +1598,7 @@ static inline void vpid_sync_context(int vpid)
static inline void ept_sync_global(void)
{
if (cpu_has_vmx_invept_global())
__invept(VMX_EPT_EXTENT_GLOBAL, 0, 0);
__invept(VMX_EPT_EXTENT_GLOBAL, 0, 0);
}
static inline void ept_sync_context(u64 eptp)
@ -6747,7 +6746,8 @@ static __init int hardware_setup(void)
if (!cpu_has_vmx_ept() ||
!cpu_has_vmx_ept_4levels() ||
!cpu_has_vmx_ept_mt_wb()) {
!cpu_has_vmx_ept_mt_wb() ||
!cpu_has_vmx_invept_global()) {
enable_ept = 0;
enable_unrestricted_guest = 0;
enable_ept_ad_bits = 0;