From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E3A5134E760; Tue, 19 May 2026 15:24:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779204275; cv=none; b=b9+1uHpx/Na542kIPkRhyeKHSW+bOMiuFsFrV3f77FmjzpyYHlnGjvtz0QZSACZAVuWR7W0wCv34iogNLdFVxNcR/oVbJgVAX/PqrQC5R0D+mT9uZBoQvOeCmILA5g/8jx1QE/CYTdajhK7tOR9THNKy5Rx+3PwCPNHrzmum65I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779204275; c=relaxed/simple; bh=nd/SFqFEnjKhIh8jdIA2Y3hV+o5FYf2nfi5Ar2FriVk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LlRisk8H+ZhiDOueTtkMCEa7430viPcFGPiRhJmSwm28U3N/qLXk41KAoCRKhY+FuG4sEFtl/9tLp6zUD0XL4kY/tLtuX1E7MhK92NZUvUlWmp1Etk+EPP/UcCmwIqnZo30EoKF5Z7Dj0mQvOZKD7keJCG1fr8VgrN63UEjDnAk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SZU/9Nk1; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SZU/9Nk1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C400C2BCB8; Tue, 19 May 2026 15:24:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779204274; bh=nd/SFqFEnjKhIh8jdIA2Y3hV+o5FYf2nfi5Ar2FriVk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SZU/9Nk1isibwbe/goA8rb23RTRh+TDHdGVHiJweVgoFLIlaLyRzOrwS1BowvouWW XenrcwvtqzcvxlAqhITZdQf9hYUeMs+gI2MdgR92uUqwQP2LBIU7SPyp6qGx6gbBOP qxVOY1l0Hhwe8JHeBzuxD0evaj0x7W+y+oLW5c93HbazWiqi0GAG4wuiOMzW6R2yeg XIaC4t8teRvWrIo4Xqyc3S70Nmw+ZV4CAGKYlxRrWTX3qixRRusoMKSBvtbM/0FjOK HSgKDcNXau/2MnWzfrD69KOkQ2gsuE0586E8+C/3t8eS87g67RVVwLnhTwzTobrB2m fWdtpV9EPdYoQ== From: Will Deacon To: maz@kernel.org, oupton@kernel.org, catalin.marinas@arm.com, corbet@lwn.net, pbonzini@redhat.com, Tian Zheng Cc: kernel-team@android.com, Will Deacon , 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, leo.bras@arm.com, Jonathan Cameron Subject: Re: [PATCH v3 0/5] Support the FEAT_HDBSS introduced in Armv9.5 Date: Tue, 19 May 2026 16:23:12 +0100 Message-ID: <177918656142.736362.17906576792384645789.b4-ty@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260225040421.2683931-1-zhengtian10@huawei.com> References: <20260225040421.2683931-1-zhengtian10@huawei.com> 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="utf-8" Content-Transfer-Encoding: 8bit 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 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev