diff options
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index b83724dce879..19aa69af7c2d 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1200,6 +1200,11 @@ static inline bool cpu_has_vmx_ept_4levels(void) return vmx_capability.ept & VMX_EPT_PAGE_WALK_4_BIT; } +static inline bool cpu_has_vmx_ept_mt_wb(void) +{ + return vmx_capability.ept & VMX_EPTP_WB_BIT; +} + static inline bool cpu_has_vmx_ept_ad_bits(void) { return vmx_capability.ept & VMX_EPT_AD_BIT; @@ -4300,7 +4305,6 @@ static u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa) { u64 eptp = VMX_EPTP_MT_WB | VMX_EPTP_PWL_4; - /* TODO write the value reading from MSR */ if (enable_ept_ad_bits && (!is_guest_mode(vcpu) || nested_ept_ad_enabled(vcpu))) eptp |= VMX_EPTP_AD_ENABLE_BIT; @@ -6635,7 +6639,8 @@ static __init int hardware_setup(void) init_vmcs_shadow_fields(); if (!cpu_has_vmx_ept() || - !cpu_has_vmx_ept_4levels()) { + !cpu_has_vmx_ept_4levels() || + !cpu_has_vmx_ept_mt_wb()) { enable_ept = 0; enable_unrestricted_guest = 0; enable_ept_ad_bits = 0; |