From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=217.140.110.172 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793979445; b=KNLXSwTLFOz+Gu6UbuH/sTRTCtckuzGt2GGuXi81xSnEFvtV9g9naKz0cfXisEHQ3HCE cM+AQakJr6u1gbM122UaW3gFz7EqyA9h3ZfEpovhK2E+6Nz79B3/l0IL47HDSX1kuuVzi B57Dxp4z/QmpiqlobPK1X0ZK8Vk4z4AkQ1G5DiR+vZ8y1FP3uzDU4btP/UJ3RLabqYlDm Kh1BzKsRCrLG8VSov5EKYfT9pmYVHqcKOUBTdJ3zJi6Rr3wE9+SSioo6Bixvm7HjaikNo zPt4MgSkHtz6SCuqHmPyZWZ5OZ88jLdUJVOjen3odCFvOC401iEJuLX4unFo1wiUmKw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793979445; h=DMARC-Filter:Received:Received:DKIM-Signature:From:To:Cc:Subject: Date:Message-ID:X-Mailer:In-Reply-To:References:MIME-Version: Content-Type:Content-Disposition:Content-Transfer-Encoding; bh=WbInPTtgeVQVaR+YtMP5Ieeyl2biDusMLIdL8tIaNf8=; b=QTss/y1JyTyFYqMJlY3efmZgHnbLtAWI6kLs6ljiBVnHS8PortY/50umqgrroHUQfvPM bGfgXCpq7t8qp4LpckDY4sTiB4rW3SnNnfr0k4SN3tBEk1NEjwqcV56buId+uK+Czevwx 1gU93YL/U35LtOWnh/k767+BpYloALnktbKRHKHM5NX+QeEybUe/4xiA05HfjWvNMKfUS 7e9R7yjS1uCwBbdB1sYD+BuzerQ85wjB3pvAE7VGE4q7xdVelElmb92PcOcblCbYvZKKA D+kuIvOrvtigmdlrsV9Ict8Hh9vWtOFv3uAfJECWZ2hkDpjGAcL2ZEh/+Obq3gOGVnw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass header.d=arm.com header.i=@arm.com header.a=rsa-sha256 header.s=foss header.b=WX68Z5yL; arc=none smtp.remote-ip=217.140.110.172 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 024D3606A336; Fri, 6 Nov 2026 15:37:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 024D3606A336 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, unprotected) header.d=arm.com header.i=@arm.com header.a=rsa-sha256 header.s=foss header.b=WX68Z5yL 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 DEC4F1650; Fri, 6 Nov 2026 07:37:19 -0800 (PST) Received: from LeoBrasDK.cambridge.arm.com (LeoBrasDK.cambridge.arm.com [10.2.212.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 8047E3F632; Fri, 6 Nov 2026 07:37:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1793979442; bh=7EK+OV8cc6RynWDVsBo3aQX5rI+zXYDSLKEL403LmQM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WX68Z5yL6OyzNuu6ZywpIXZrFSwK9X2UJrdZ6ELbVJWB/Rx0VdMU5Rbmy0NZFI+PD m1eJazJZTMQLnD3Wv7gPUGVEW1c51bZ3fbQ9BWbBFFx622ozPIILzlDy0QQ8ZDBTKa ZKgMtPWWAQZ7ODXi1Gn2Q1+KL1k+y4WW/FQyfpNw= From: Leonardo Bras To: Tian Zheng Cc: Leonardo Bras , maz@kernel.org, oupton@kernel.org, catalin.marinas@arm.com, will@kernel.org, corbet@lwn.net, pbonzini@redhat.com, yuzenghui@huawei.com, wangzhou1@hisilicon.com, yangjinqian1@huawei.com, caijian11@h-partners.com, liuyonglong@huawei.com, tangchengchang@huawei.com, yezhenyu2@huawei.com, yubihong@huawei.com, linuxarm@huawei.com, joey.gouly@arm.com, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, seiden@linux.ibm.com, suzuki.poulose@arm.com, fuad.tabba@linux.dev, mark.rutland@arm.com, seanjc@google.com, rdunlap@infradead.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, skhan@linuxfoundation.org Subject: Re: [PATCH v5 12/15] KVM: arm64: Derive the VM hardware dirty mode from dirty logging Date: Fri, 6 Nov 2026 15:37:14 +0000 Message-ID: X-Mailer: git-send-email 2.56.0 In-Reply-To: <191ab0e3-9913-4927-9f84-c861c8f3bcd5@huawei.com> References: <20260929103655.85107-1-zhengtian10@huawei.com> <20260929103655.85107-13-zhengtian10@huawei.com> <191ab0e3-9913-4927-9f84-c861c8f3bcd5@huawei.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: 8bit On Fri, Nov 06, 2026 at 06:46:46PM +0800, Tian Zheng wrote: > > > On 11/2/2026 11:03 PM, Leonardo Bras wrote: > > On Tue, Sep 29, 2026 at 06:36:52PM +0800, Tian Zheng wrote: > > > Both HAFDBS and HDBSS flip VTCR_EL2.HD at memslot-update time. Two > > > independent toggles allow an intermediate HDBSS-set/HD-clear state, > > > an illegal combination, and need locking against concurrent updates. > > > > > > Replace both with kvm_arch_update_hw_dirty_mode(), a pure function > > > of the static capabilities and the number of logging memslots: > > > > > > - logging && HDBSS-capable -> HD|HA|HDBSS > > > - logging, no HDBSS -> off > > > - !logging && HAFDBS-cap. -> HD|HA > > > > This last one is gone now, so I guess most of this patch has to be > > reworked, right? > > > > Thanks! > > Leo > > Hi Leo, > > Yes, the last one is no longer needed as we discussed earlier in [1], so > I'll rework this patch. > Awesome, thanks! Leo