From: Wanpeng Li <wanpeng.li@hotmail.com>
Date: Thu, 11 May 2017 09:58:56 +0000 (-0700)
Subject: KVM: VMX: Don't enable EPT A/D feature if EPT feature is disabled
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fce6ac4c0508b985d497e3d9c8eff28ec8a43182;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

KVM: VMX: Don't enable EPT A/D feature if EPT feature is disabled

We can observe eptad kvm_intel module parameter is still Y
even if ept is disabled which is weird. This patch will
not enable EPT A/D feature if EPT feature is disabled.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
---

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 7698e8f321bf..72f78396bc09 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6504,7 +6504,7 @@ static __init int hardware_setup(void)
 		enable_ept_ad_bits = 0;
 	}
 
-	if (!cpu_has_vmx_ept_ad_bits())
+	if (!cpu_has_vmx_ept_ad_bits() || !enable_ept)
 		enable_ept_ad_bits = 0;
 
 	if (!cpu_has_vmx_unrestricted_guest())