Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Wei Liu <wei.liu@kernel.org>
To:     kvm@vger.kernel.org
Cc:     Wei Liu <wei.liu@kernel.org>,
        Sean Christopherson <seanjc@google.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
        "H. Peter Anvin" <hpa@zytor.com>,
        linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND
        64-BIT))
Subject: [PATCH] KVM: x86/mmu: fix an incorrect comment in kvm_mmu_new_pgd
Date:   Sun, 27 Nov 2022 22:12:45 +0000
Message-Id: <20221127221245.204208-1-wei.liu@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

There is no function named kvm_mmu_ensure_valid_pgd.

Fix the comment and remove the pair of braces to conform to Linux kernel
coding style.

Signed-off-by: Wei Liu <wei.liu@kernel.org>
---
 arch/x86/kvm/mmu/mmu.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index b6f96d47e596..361574124fbe 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4452,10 +4452,12 @@ void kvm_mmu_new_pgd(struct kvm_vcpu *vcpu, gpa_t new_pgd)
 	struct kvm_mmu *mmu = vcpu->arch.mmu;
 	union kvm_mmu_page_role new_role = mmu->root_role;
 
-	if (!fast_pgd_switch(vcpu->kvm, mmu, new_pgd, new_role)) {
-		/* kvm_mmu_ensure_valid_pgd will set up a new root.  */
+	/*
+	 * Return immediately if no usable root is found. A new root will be
+	 * set up in vcpu_enter_guest prior to the next vmenter.
+	 */
+	if (!fast_pgd_switch(vcpu->kvm, mmu, new_pgd, new_role))
 		return;
-	}
 
 	/*
 	 * It's possible that the cached previous root page is obsolete because
-- 
2.35.1