From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B38E9F01806 for ; Fri, 6 Mar 2026 07:44:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=kOHlri39bLdqWuALVeplzccv5GnuqSwkfxjMG5OT0y0=; b=d0tTkBrabaJPUWiukWjKQ13sYG HVyi2KfhHHIApxv00oThpM/nJvOv5MsuaETXHC+OedZxf4iXMRxy69zssDhQRykD607TzmYGliLgg QuszcbSEm5Ag3bS8rbvZfwDF5WSfmPboNJuuheFwSUKCcevoqYpYJd4zICQTScSXmDEP+hCEwv4Pw cAiBhSSARGpK2B50IwkEBqXuQ7dphB7zat6I00P+l0CRblVMYlIKc5na9DpJU/yquMplYyWdEJSGS AjZolLHiepjLoPBDmXCehJpstLt958T6SHuNFQmXfR55KBxLU5rjAQ2JeIVz40EsDIP1SNIdecbPb dVY0DXaQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vyPrS-00000003Alq-3RqL; Fri, 06 Mar 2026 07:44:38 +0000 Received: from out-173.mta1.migadu.com ([95.215.58.173]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vyPrP-00000003AlH-3VoQ for linux-arm-kernel@lists.infradead.org; Fri, 06 Mar 2026 07:44:37 +0000 X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1772783070; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=kOHlri39bLdqWuALVeplzccv5GnuqSwkfxjMG5OT0y0=; b=cR8/GLYSzD7JV1DG0HRAvoa1j7W2pUUuJV8ZLESltAhIu7itJIZ6sScp4vGLa4t9akEL14 MPUUCHWmn9qUTrwEix9LHyDRKNNWa9yXsyOvikU/BmCSM1SJOBflG54qRE9QX9N7Nq+JHL qD4MtitR2lb4sORGMyZT0rsqvpRdW3g= From: Zenghui Yu To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: maz@kernel.org, oupton@kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, "Zenghui Yu (Huawei)" Subject: [PATCH] KVM: arm64: Remove the redundant ISB in __kvm_at_s1e2() Date: Fri, 6 Mar 2026 15:44:22 +0800 Message-ID: <20260306074422.47694-1-zenghui.yu@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260305_234436_035163_ECBF0410 X-CRM114-Status: UNSURE ( 5.68 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: "Zenghui Yu (Huawei)" 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) --- 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