From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [78.32.30.218]) (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 D0BC52DCF72 for ; Sat, 14 Mar 2026 19:52:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=78.32.30.218 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773517969; cv=none; b=aX5EwqcpkLMv8N7wlpMxfRHOqIlABx5xt/rv1EAwz1Rd6rZhNcWVJ3ygZ0AoNowVazP0eC2eCVmRumv7fJGnwHe/kvBeBWOdu0gYfGUsifM2k6lLlB5EB82IEyYuwNpBRCivY+vOdfwHLa8lRdzEy64KHy91VE6TolsTFHQzsVQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773517969; c=relaxed/simple; bh=HnCyBoLhJF5AzbmaE+EC2jtx/3wIQDW2tdgdT0dFxCk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=usr9cYZwcsvFpV9yqOBJBHnYi/e81oNflIUO7myfAjY8l8kLW2bhUYq0UVKmWtVeXOurpZhJDrj7XA6JWZmJNP9YTK5mASxWiIwdGWjHzwFbHcDPw2NWwcliyWT3b50S6D5bYcFLYDzca54XBLdrtJfw1PHm6UWXo6tGe631JSs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk; spf=none smtp.mailfrom=armlinux.org.uk; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b=audYKytx; arc=none smtp.client-ip=78.32.30.218 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="audYKytx" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=oiOJoFUw+Hyic1c78IIqHGXE+74cb7sOJmmgItlPy5A=; b=audYKytx6H6NiRokYT2ySXaNhA gtgvys4WuAAWpjvQgjH7WGQaqXvxwlof+myParFA0qFr7D/buY8r5fuE/rtHPLsmfL/J+RI1JiTHd jPmQgUUhSu6tg250OpkO9Bt00CSM/CyXEagiq9tlReuJmCOM+w3A4KOwRB6OAJpz3BfZ1aJo5kMHL 55uGRuyOM5K9hMIy4LX8XTRxHBRKmJOFzeQfKdVhJwF1e7IXCBVEaqGvhmHK2aLoJUxJhEHACVwVL JVRw2dlDhcuwVPQOAei9BMPyP+AvhOhRpQvA18cC/UpufEi6UMldln32FmYu7pq2W/aI9xPy4h35x BR89FqSw==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:42084) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1w1V2R-000000002Q5-3jnz; Sat, 14 Mar 2026 19:52:44 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.98.2) (envelope-from ) id 1w1V2Q-0000000013C-1Av5; Sat, 14 Mar 2026 19:52:42 +0000 Date: Sat, 14 Mar 2026 19:52:42 +0000 From: "Russell King (Oracle)" To: Wang YanQing Cc: akpm@linux-foundation.org, willy@infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] arm: lpae: fix non-atomic page table entry update issue Message-ID: References: <20260314175958.GA7956@udknight> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260314175958.GA7956@udknight> Sender: Russell King (Oracle) On Sun, Mar 15, 2026 at 01:59:58AM +0800, Wang YanQing wrote: > > The ARM Architecture Reference Manual explicitly dictates that writes of 64-bit > translation table descriptors must be single-copy atomic Please provide a documentation reference. Thanks. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!