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 4B35DE7717D for ; Wed, 11 Dec 2024 21:51:17 +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=TkNQtWhZUGtyJ2fxKJJU0zr4TXNwZCZlRe3ObHUcd9Y=; b=xzZUjKQuUMIt2mKzrsjl380wJi VEi1rYfcDurd1QPuGjG0KkxjhDqcV5x+/KlZrThNjfFrjf8+b5JD5CoPgiouWPU5MQHI6wajyehDi 3RPPV7xkxHbVPUZl0jHW7W869t3ZbrrmZEbBkGvocqdKvxwjxneSe2B0O+tAtGxx52vLEfaXlf+Hi E9gWLpRJ6WUa37hvMVNuO2oLV1utUIGILTHxjcuh7bhiZiKOzpTFKMsOdEFI9evXn+wH8weRN+qQg 8BtKXr8Y0WdqFyi9BP2a8iD6SLkUZ38onVBiyD4REz2EX2tPuk3jelkN+Y58zmHrrx9Qu1YlQ0KKM tlc4QsAQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tLUbg-0000000GEQQ-1mCq; Wed, 11 Dec 2024 21:51:00 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tLUac-0000000GEGg-2VzE for linux-arm-kernel@lists.infradead.org; Wed, 11 Dec 2024 21:49:51 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 84FFAA41C12; Wed, 11 Dec 2024 21:47:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35920C4CED2; Wed, 11 Dec 2024 21:49:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733953789; bh=9dEs7Uv/W3GFIdvWXNgPv9/RG/WPitz2vsK5/eV8epM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=MFaITdJIkZ1IZ7UigB5f9EhJDAqOApX0es7WvCaYIyDxpBqxTVztnpMhTSDhYdiPb 257hY2WpAkUzycQO10r8/Juah4PjhQt6ojA1tYClva3aSLV1cs3T9c33RHHemnCeLG 4nCMZiKzpKXK9A/lDjeS1hNe3FMwIvwkeLblSVCM0LBMFZ5Na32iXF4BXNO6e0sSrP gqwHbYpID10NcowjpWJQQtu9fsCV+/MbUb/pWJ75dwC+UsqPiCuGljkzXcJK7QuY+P nA1ASb4a6HJcJxjUGb6tz3ue79ctd/UDZJ0VkUZknepBmN5hjzG7ppeQ8vOnHJlsHq dsot4KoUZvQCA== Date: Wed, 11 Dec 2024 21:49:40 +0000 From: Will Deacon To: Ankit Agrawal Cc: Jason Gunthorpe , "maz@kernel.org" , "oliver.upton@linux.dev" , "joey.gouly@arm.com" , "suzuki.poulose@arm.com" , "yuzenghui@huawei.com" , "catalin.marinas@arm.com" , "ryan.roberts@arm.com" , "shahuang@redhat.com" , "lpieralisi@kernel.org" , Aniket Agashe , Neo Jia , Kirti Wankhede , "Tarun Gupta (SW-GPU)" , Vikram Sethi , Andy Currid , Alistair Popple , John Hubbard , Dan Williams , Zhi Wang , Matt Ochs , Uday Dhoke , Dheeraj Nigam , "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 1/1] KVM: arm64: Allow cacheable stage 2 mapping using VMA flags Message-ID: <20241211214939.GD17486@willie-the-truck> References: <20241118131958.4609-1-ankita@nvidia.com> <20241118131958.4609-2-ankita@nvidia.com> <20241210141334.GD15607@willie-the-truck> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241211_134950_698868_8C0B95DF X-CRM114-Status: GOOD ( 13.80 ) 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 Wed, Dec 11, 2024 at 02:58:38AM +0000, Ankit Agrawal wrote: > Thanks Will for taking a look. > > >> The device memory such as on the Grace Hopper systems is interchangeable > >> with DDR memory and retains its properties. Allow executable faults > >> on the memory determined as Normal cacheable. > > > > Sorry, but a change this subtle to the arch code is going to need a _much_ > > better explanation than the rambling text above. > > Understood, I'll work on the text and try to make it coherent. Heh, I thought it was the patch trying to make things coherent :p Will