From: Jia Qingtong <jiaqingtong97@gmail.com>
Date: Tue, 9 Jul 2024 08:25:51 +0000 (+0800)
Subject: LoongArch: KVM: always make pte young in page map's fast path
X-Git-Tag: v6.11-rc1~89^2~18^2~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d7ad41a31d91abd01a4d9b040074d808899636ea;p=thirdparty%2Flinux.git

LoongArch: KVM: always make pte young in page map's fast path

It seems redundant to check if pte is young before the call to
kvm_pte_mkyoung() in kvm_map_page_fast(). Just remove the check.

Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Jia Qingtong <jiaqingtong97@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---

diff --git a/arch/loongarch/kvm/mmu.c b/arch/loongarch/kvm/mmu.c
index ad80a837e068e..2634a9e8d82cc 100644
--- a/arch/loongarch/kvm/mmu.c
+++ b/arch/loongarch/kvm/mmu.c
@@ -569,10 +569,8 @@ static int kvm_map_page_fast(struct kvm_vcpu *vcpu, unsigned long gpa, bool writ
 	}
 
 	/* Track access to pages marked old */
-	new = *ptep;
-	if (!kvm_pte_young(new))
-		new = kvm_pte_mkyoung(new);
-		/* call kvm_set_pfn_accessed() after unlock */
+	new = kvm_pte_mkyoung(*ptep);
+	/* call kvm_set_pfn_accessed() after unlock */
 
 	if (write && !kvm_pte_dirty(new)) {
 		if (!kvm_pte_write(new)) {