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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 87358E77180 for ; Tue, 10 Dec 2024 16:13:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id: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-Owner; bh=UhGwtCZQPUWo8JC928lQsGKK4ZTYsXyCnf30A3VDezM=; b=o4wQn+E5hOW8tmmRbFNYgRX6sI aI2Ni+G9HlX1y4JzQkT7r5rYsfBWopp0vzEUnHw4lTI5LYj5iNEFSZJtwo2TEVlyphe2X4ADHKOly 4vNJ9RfD3RPCkYyIn0a47FiaVzqtN6GsD+/WaUFx43JR+ydOC80GiTzFzAi7clx1Pxq8+YUxm+1mp Bg7rYPQH8nnftw5gY5+iE3x2creybg3ByVKO+DxuShPcsxjTY4gcklZjAy9eadxCVVMs/RnwvDl1A FXXORtYIeOeKWgiNTRS6JSwjoQGhqg5Mz3r+pMmI9RuDgCLkClKae2vH6/V5f8hH0heWxpjgVKwMS 51FLY3Eg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tL2rR-0000000C37t-3bsE; Tue, 10 Dec 2024 16:13:21 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tL2mX-0000000C2IV-0mkE for linux-arm-kernel@lists.infradead.org; Tue, 10 Dec 2024 16:08:18 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 060F95C481A; Tue, 10 Dec 2024 16:07:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C2401C4CED6; Tue, 10 Dec 2024 16:08:09 +0000 (UTC) Date: Tue, 10 Dec 2024 16:08:07 +0000 From: Catalin Marinas To: Donald Dutile Cc: Jason Gunthorpe , Will Deacon , ankita@nvidia.com, maz@kernel.org, oliver.upton@linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, ryan.roberts@arm.com, shahuang@redhat.com, lpieralisi@kernel.org, aniketa@nvidia.com, cjia@nvidia.com, kwankhede@nvidia.com, targupta@nvidia.com, vsethi@nvidia.com, acurrid@nvidia.com, apopple@nvidia.com, jhubbard@nvidia.com, danw@nvidia.com, zhiw@nvidia.com, mochs@nvidia.com, udhoke@nvidia.com, dnigam@nvidia.com, alex.williamson@redhat.com, sebastianene@google.com, coltonlewis@google.com, kevin.tian@intel.com, yi.l.liu@intel.com, ardb@kernel.org, akpm@linux-foundation.org, gshan@redhat.com, linux-mm@kvack.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 0/1] KVM: arm64: Map GPU memory with no struct pages Message-ID: References: <20241118131958.4609-1-ankita@nvidia.com> <20241210140739.GC15607@willie-the-truck> <20241210141806.GI2347147@nvidia.com> <0723d890-1f90-463b-a814-9f7bb7e2200b@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0723d890-1f90-463b-a814-9f7bb7e2200b@redhat.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241210_080817_266553_BCDB9FD8 X-CRM114-Status: GOOD ( 12.34 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Dec 10, 2024 at 10:56:43AM -0500, Donald Dutile wrote: > So, I'm not sure I read what is needed to resolve this patch. I read > Will's reply to split it further and basically along what logical > lines of functionality; is there still an MTE complexity that has to > be resolved/included in the series? Since MTE is still around, the complexity did not go away. But I need to properly read the patch and Will's comment and page in the whole discussion from last year. There's now FEAT_MTE_PERM as well but we don't have those patches in yet: https://lore.kernel.org/r/20241028094014.2596619-1-aneesh.kumar@kernel.org/ -- Catalin