linux-kernel - [PATCH 14/15] kvm/vmx/nested: Support CR4.KL in nested

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Date:   Tue,  1 Jun 2021 16:47:53 +0800
From:   Robert Hoo <robert.hu@...ux.intel.com>
To:     pbonzini@...hat.com, seanjc@...gle.com, vkuznets@...hat.com,
        wanpengli@...cent.com, jmattson@...gle.com, joro@...tes.org,
        kvm@...r.kernel.org
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        chang.seok.bae@...el.com, robert.hu@...el.com,
        robert.hu@...ux.intel.com
Subject: [PATCH 14/15] kvm/vmx/nested: Support CR4.KL in nested

Add CR4.KL in nested.msr.cr4_fixed1 when guest CPUID supports KeyLocker. So
that it can pass check when preparing vmcs02.

Signed-off-by: Robert Hoo <robert.hu@...ux.intel.com>
---
 arch/x86/kvm/vmx/vmx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 5b46d7b..070ba81 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7440,6 +7440,7 @@ static void nested_vmx_cr_fixed1_bits_update(struct kvm_vcpu *vcpu)
 	cr4_fixed1_update(X86_CR4_PKE,        ecx, feature_bit(PKU));
 	cr4_fixed1_update(X86_CR4_UMIP,       ecx, feature_bit(UMIP));
 	cr4_fixed1_update(X86_CR4_LA57,       ecx, feature_bit(LA57));
+	cr4_fixed1_update(X86_CR4_KEYLOCKER,       ecx, feature_bit(KEYLOCKER));
 
 #undef cr4_fixed1_update
 }
-- 
1.8.3.1