From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 60102246774; Tue, 19 May 2026 15:35:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779204961; cv=none; b=Va+DQCwAm7r7/64xSZ/s6ZbxwF9RL/yTdXX0ktbrHiOFIJUZUd3HwfvPifKLLoe4brsTB/uXVFIITSk6VCyrkBhEf9cBOoCK1ZDPnP3EdHe67mNQvoywsFCxOMBtOo8XamoRh/5FsleNV6dRoFvGzn+z3D6tOu9TnYxpLjVv+bI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779204961; c=relaxed/simple; bh=ZkRz0E7rghIRIQ6Vas5WZriK1yQc+rUOKfruBiITXEI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type:Content-Disposition; b=F6Pin+4BeKLGQncWgzZqx9tNKLw29gv/WZkRAzXBCZsde8wyXuVipKI1xpNTjm8erkvuaGbetMJIFvEfpOzxFAHj3hWuEuj2ZIkrjaRDD/I5Rpowysn0mLPPFejS23hcK9hRtKrC/FbjFQKT/OWRA2PVCsIclgGz+HhAFnixKj4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=Tr5Iy+eF; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="Tr5Iy+eF" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 46E243528; Tue, 19 May 2026 08:35:52 -0700 (PDT) Received: from devkitleo.cambridge.arm.com (devkitleo.cambridge.arm.com [10.1.196.90]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 06D2F3F632; Tue, 19 May 2026 08:35:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1779204957; bh=ZkRz0E7rghIRIQ6Vas5WZriK1yQc+rUOKfruBiITXEI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Tr5Iy+eFwtAYt3ObIw+VJv4hqD8NnNXrVImS/KaM3B7UPx2teDebcJMl0o/sqAvrd eVGCpt/7KscfUVWRWqRTlVXYKxM8aygDha8hQMG0DXl0eAjjoV6H0iM0KGW2GzQFrT S5BU9CCBk23N6+39Bw8htB9d60IxSCooMRuRfvlI= From: Leonardo Bras To: Will Deacon Cc: Leonardo Bras , maz@kernel.org, oupton@kernel.org, catalin.marinas@arm.com, corbet@lwn.net, pbonzini@redhat.com, Tian Zheng , kernel-team@android.com, yuzenghui@huawei.com, wangzhou1@hisilicon.com, liuyonglong@huawei.com, yezhenyu2@huawei.com, linuxarm@huawei.com, joey.gouly@arm.com, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, skhan@linuxfoundation.org, suzuki.poulose@arm.com, Jonathan Cameron Subject: Re: [PATCH v3 0/5] Support the FEAT_HDBSS introduced in Armv9.5 Date: Tue, 19 May 2026 16:35:47 +0100 Message-ID: X-Mailer: git-send-email 2.54.0 In-Reply-To: <177918656142.736362.17906576792384645789.b4-ty@kernel.org> References: <20260225040421.2683931-1-zhengtian10@huawei.com> <177918656142.736362.17906576792384645789.b4-ty@kernel.org> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: 8bit On Tue, May 19, 2026 at 04:23:12PM +0100, Will Deacon wrote: > On Wed, 25 Feb 2026 12:04:16 +0800, Tian Zheng wrote: > > This series of patches add support to the Hardware Dirty state tracking > > Structure(HDBSS) feature, which is introduced by the ARM architecture > > in the DDI0601(ID121123) version. > > > > The HDBSS feature is an extension to the architecture that enhances > > tracking translation table descriptors' dirty state, identified as > > FEAT_HDBSS. This feature utilizes hardware assistance to achieve dirty > > page tracking, aiming to significantly reduce the overhead of scanning > > for dirty pages. > > > > [...] > > Applied sysreg definitions to arm64 (for-next/sysregs), thanks! > > [1/5] arm64/sysreg: Add HDBSS related register information > https://git.kernel.org/arm64/c/72f7be0c2e30 > Thanks! Leo > Cheers, > -- > Will > > https://fixes.arm64.dev > https://next.arm64.dev > https://will.arm64.dev