linux-kernel - [PATCH v2 08/46] KVM: SVM: Drop explicit MMU reset at RESET/INIT

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Date:   Tue, 13 Jul 2021 09:32:46 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     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>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Reiji Watanabe <reijiw@...gle.com>
Subject: [PATCH v2 08/46] KVM: SVM: Drop explicit MMU reset at RESET/INIT

Drop an explicit MMU reset in SVM's vCPU RESET/INIT flow now that the
common x86 path correctly handles conditional MMU resets, e.g. if INIT
arrives while the vCPU is in 64-bit mode.

This reverts commit ebae871a509d ("kvm: svm: reset mmu on VCPU reset").

Reviewed-by: Reiji Watanabe <reijiw@...gle.com>
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 arch/x86/kvm/svm/svm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 7da214660c64..44248548be7d 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1274,7 +1274,6 @@ static void init_vmcb(struct kvm_vcpu *vcpu)
 	 * It also updates the guest-visible cr0 value.
 	 */
 	svm_set_cr0(vcpu, X86_CR0_NW | X86_CR0_CD | X86_CR0_ET);
-	kvm_mmu_reset_context(vcpu);
 
 	save->cr4 = X86_CR4_PAE;
 
-- 
2.32.0.93.g670b81a890-goog