From f5f51586dba5bb29b21ed5d4c649f4edf72af327 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Thu, 24 Aug 2017 20:51:30 +0200 Subject: [PATCH] KVM: VMX: require INVEPT GLOBAL for EPT MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: David Hildenbrand Signed-off-by: Radim Krčmář --- arch/x86/kvm/vmx.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 7d944d3..7fffdd4 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -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; -- 2.7.4