From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 454BBC54EE9 for ; Tue, 27 Sep 2022 17:32:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232459AbiI0RcN (ORCPT ); Tue, 27 Sep 2022 13:32:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232590AbiI0RcL (ORCPT ); Tue, 27 Sep 2022 13:32:11 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63E6B151DC8 for ; Tue, 27 Sep 2022 10:32:11 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E7C446068E for ; Tue, 27 Sep 2022 17:32:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4E87AC433C1; Tue, 27 Sep 2022 17:32:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664299930; bh=ZozCbHUOMdOUag1q4SttTUqQ6zZ1VqsPbscqnnUWg5A=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=jzJD20MTSCY09aB6ktndBKFoxhVp0X1FOXsAtfGO3iFRPyt7zAGZQqvaLzLDNi6rY +xwqJILPiUx0ZXXiTK3yGVq34+J5MWOJiwui0c8fjp9N8KvTDoUxBC4wiqrfdlMIta m9fsf1uY3FJZF9caL+FbcS7DeofI+wDO/AOIfEPqv3Jvk8keRHloPqCMu3Y9vd0oZL h4oefO6zr+gV3jSK/htJ89bmaEqYKhaWGkN4Ntajtoh/P6zHT1ELX6WfMOzpdV/t6S dcC/NVJ0o3E6/OhX13os8qkRnlPgOFnNMOEnsOdJXapf9Gr3CWhtpdQXFIYATAgent bWmkZT1pSry2w== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1odERE-00D3s3-6C; Tue, 27 Sep 2022 18:32:08 +0100 Date: Tue, 27 Sep 2022 13:32:07 -0400 Message-ID: <86sfkc7mg8.wl-maz@kernel.org> From: Marc Zyngier To: Peter Xu Cc: Gavin Shan , kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, catalin.marinas@arm.com, bgardon@google.com, shuah@kernel.org, andrew.jones@linux.dev, will@kernel.org, dmatlack@google.com, pbonzini@redhat.com, zhenyzha@redhat.com, shan.gavin@gmail.com, james.morse@arm.com, suzuki.poulose@arm.com, alexandru.elisei@arm.com, oliver.upton@linux.dev Subject: Re: [PATCH v4 3/6] KVM: arm64: Enable ring-based dirty memory tracking In-Reply-To: References: <20220927005439.21130-1-gshan@redhat.com> <20220927005439.21130-4-gshan@redhat.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: peterx@redhat.com, gshan@redhat.com, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, catalin.marinas@arm.com, bgardon@google.com, shuah@kernel.org, andrew.jones@linux.dev, will@kernel.org, dmatlack@google.com, pbonzini@redhat.com, zhenyzha@redhat.com, shan.gavin@gmail.com, james.morse@arm.com, suzuki.poulose@arm.com, alexandru.elisei@arm.com, oliver.upton@linux.dev X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Tue, 27 Sep 2022 12:02:52 -0400, Peter Xu wrote: > > On Tue, Sep 27, 2022 at 08:54:36AM +0800, Gavin Shan wrote: > > Enable ring-based dirty memory tracking on arm64 by selecting > > CONFIG_HAVE_KVM_DIRTY_RING_ACQ_REL and providing the ring buffer's > > physical page offset (KVM_DIRTY_LOG_PAGE_OFFSET). > > > > Signed-off-by: Gavin Shan > > Gavin, > > Any decision made on how to tackle with the GIC status dirty bits? Which dirty bits? Are you talking of the per-RD pending bits? M. -- Without deviation from the norm, progress is not possible.