linux-kernel - [PATCH 02/15] KVM: VMX: Mark VCPU_EXREG_PDPTR available in ept_save

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Date:   Mon,  8 Nov 2021 20:43:54 +0800
From:   Lai Jiangshan <jiangshanlai@...il.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     Lai Jiangshan <laijs@...ux.alibaba.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 02/15] KVM: VMX: Mark VCPU_EXREG_PDPTR available in ept_save_pdptrs()

From: Lai Jiangshan <laijs@...ux.alibaba.com>

mmu->pdptrs[] and vmcs.GUEST_PDPTR[0-3] are synced, so mmu->pdptrs is
available and GUEST_PDPTR[0-3] is not dirty.

Signed-off-by: Lai Jiangshan <laijs@...ux.alibaba.com>
---
 arch/x86/kvm/vmx/vmx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 39db4f56bffd..79e5df5fbb32 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -3001,7 +3001,7 @@ void ept_save_pdptrs(struct kvm_vcpu *vcpu)
 	mmu->pdptrs[2] = vmcs_read64(GUEST_PDPTR2);
 	mmu->pdptrs[3] = vmcs_read64(GUEST_PDPTR3);
 
-	kvm_register_mark_dirty(vcpu, VCPU_EXREG_PDPTR);
+	kvm_register_mark_available(vcpu, VCPU_EXREG_PDPTR);
 }
 
 #define CR3_EXITING_BITS (CPU_BASED_CR3_LOAD_EXITING | \
-- 
2.19.1.6.gb485710b