[PATCH] KVM: arm64: Remove the redundant ISB in __kvm_at_s1e2()

Zenghui Yu zenghui.yu at linux.dev
Thu Mar 5 23:44:22 PST 2026


From: "Zenghui Yu (Huawei)" <zenghui.yu at linux.dev>

We already have an ISB in __kvm_at() to make the address translation result
visible to subsequent reads of PAR_EL1. Remove the redundant one right
after it.

Signed-off-by: Zenghui Yu (Huawei) <zenghui.yu at linux.dev>
---
 arch/arm64/kvm/at.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm64/kvm/at.c b/arch/arm64/kvm/at.c
index 6588ea251ed7..c5c5644b1878 100644
--- a/arch/arm64/kvm/at.c
+++ b/arch/arm64/kvm/at.c
@@ -1504,8 +1504,6 @@ int __kvm_at_s1e2(struct kvm_vcpu *vcpu, u32 op, u64 vaddr)
 			fail = true;
 		}
 
-		isb();
-
 		if (!fail)
 			par = read_sysreg_par();
 
-- 
2.53.0




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