From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-178.mta1.migadu.com (out-178.mta1.migadu.com [95.215.58.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A393F3C0C for ; Fri, 6 Mar 2026 07:44:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772783074; cv=none; b=GEtVDAEXjg+tQxDzQILzTRix3reJMjR8vnDyi5Cx84boUCHwBN0Fbr47XQAHudvpWXdADjgK31rhDmiqGJEAarxXj08bUGYCsPltz7sLFmiGKslsm/AAmZBg9RcQS+YtKCIEOFVvulgV9L931pGRuiBlwetX6QSbLFGHs35PncE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772783074; c=relaxed/simple; bh=ceac8py+hJd7v6E7ofHLa9+viDLZkZfsQBoO6g0Y/Pk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ah6rzD6Bfy+j8FV2qs8WL9MbP0FHYmnxrahYmut357dE2hkYnOQFNKdc3k+CnMNjLDTtqOwsF20QZY44Kot9ES4bzTplOwvgu0YSy4TisCDK1ob1EmYt/W4vxKJwykWXyjBV90MI54UFDrfdBuJUZkRjOllsrqWPhri2oD+sw0A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=cR8/GLYS; arc=none smtp.client-ip=95.215.58.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="cR8/GLYS" 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> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT 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