linux-kernel - [PATCH v2 45/46] KVM: SVM: Drop redundant clearing of vcpu->arch.hflags at INIT/RESET

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Date:   Tue, 13 Jul 2021 09:33:23 -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 45/46] KVM: SVM: Drop redundant clearing of
 vcpu->arch.hflags at INIT/RESET

Drop redundant clears of vcpu->arch.hflags in init_vmcb() now that
init_vmcb() is invoked only through kvm_vcpu_reset(), which always clears
hflags.  And of course, the second clearing in init_vmcb() was always
redundant.

Suggested-by: Reiji Watanabe <reijiw@...gle.com>
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 arch/x86/kvm/svm/svm.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 285587a7fe80..46d341f57e26 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1177,8 +1177,6 @@ static void init_vmcb(struct kvm_vcpu *vcpu)
 	struct vmcb_control_area *control = &svm->vmcb->control;
 	struct vmcb_save_area *save = &svm->vmcb->save;
 
-	vcpu->arch.hflags = 0;
-
 	svm_set_intercept(svm, INTERCEPT_CR0_READ);
 	svm_set_intercept(svm, INTERCEPT_CR3_READ);
 	svm_set_intercept(svm, INTERCEPT_CR4_READ);
@@ -1277,7 +1275,6 @@ static void init_vmcb(struct kvm_vcpu *vcpu)
 
 	svm->nested.vmcb12_gpa = INVALID_GPA;
 	svm->nested.last_vmcb12_gpa = INVALID_GPA;
-	vcpu->arch.hflags = 0;
 
 	if (!kvm_pause_in_guest(vcpu->kvm)) {
 		control->pause_filter_count = pause_filter_count;
-- 
2.32.0.93.g670b81a890-goog