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 44755D59F48 for ; Wed, 6 Nov 2024 15:57:15 +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:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Dl3U4wSL+5LdLKtEEvFx0ANtJXl/d4JTR3XePPrdFwY=; b=eOi7s709fGfoR9Y7eiwSBwVca9 uhTLEv4FlDvYFDtroKyhZQeymR4L0+GDtK7d6V5IKcxEzWX1ekmkt01w4zPNc1OVCtdoraVDTZfu5 NUptykfPsYPv5wuDqfQ63+5aE+5NzxrSOzYM8ELp9MfpuCDLPacrVEcfQuUYSm5GT7X0xzI52jBrf 7NC25QFHOuWehsNtie8X7yr6H2UOEyZQDBGKJXD/pdcgfdkYZfKvnoah+5Xnarf1EII0HVnrSW+2O 7jJVUxIsusTwno04Y5GJ51+GALl01Y1jmleQnDKi0NHz7RF4sCJIgV2o4t+7XGp1Cj5YGd9W0mO82 eRv2+HbQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t8iP1-00000003ug3-3RV3; Wed, 06 Nov 2024 15:57:03 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t8iLe-00000003uB6-11gP for linux-arm-kernel@lists.infradead.org; Wed, 06 Nov 2024 15:53:35 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 9ADD6A43F97; Wed, 6 Nov 2024 15:51:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2DDAC4CECD; Wed, 6 Nov 2024 15:53:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730908413; bh=Eg7TVMu0q5lzDUTXHhoiurM6aMX5DshN2Hm+8U2txNg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Xy+3mwjAla+PCpUgJIAWjVJvAxy/sWMdntHcLHXg4t4MBCLlQUKPUTdEBJ9xKed5t Ks2GXpv5XKfiadr4Px/0LuF5VWyVKBfOsYc55xuB2UVnQ620qanS0fhmo/LFzJ/8L4 ZUmueb01LhGr9wKA1zJu2JaXIa9WP97ov5IJ+kWHmFDQluN2YatgrwxJKSZ99SGlQJ BufjhA3pihT4TISQ93n9mihnSxXrXjGOWSakfKuTtraNBX2kDuNhnNz75plYmxWW5a ogtXlWD70w7ub8mCGvZLUkmq0i9nvHF7OKPnuAcugmbyV6wxbomkjh+mh/hSmS8ga0 BovKWFWogz5Rg== From: Will Deacon To: iommu@lists.linux.dev, Joerg Roedel , linux-arm-kernel@lists.infradead.org, Robin Murphy , Jason Gunthorpe Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , Boris Brezillon , dri-devel@lists.freedesktop.org, Liviu Dudau , patches@lists.linux.dev, Steven Price Subject: Re: [PATCH v3 0/3] Remove split on unmap behavior Date: Wed, 6 Nov 2024 15:53:23 +0000 Message-Id: <173090505900.4167208.10850898110820689849.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <0-v3-b3a5b5937f56+7bb-arm_no_split_jgg@nvidia.com> References: <0-v3-b3a5b5937f56+7bb-arm_no_split_jgg@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241106_075334_369937_F3030107 X-CRM114-Status: GOOD ( 10.73 ) 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, 05 Nov 2024 14:14:23 -0400, Jason Gunthorpe wrote: > This is the result of the discussion on removing split. We agreed that > split is not required, and no application should ask for anything that > would not unmap a full large IOPTE. > > Instead of split the two ARM drivers will now WARN_ON and return 0. This > is in contrast to what several other drivers do of removing the whole > IOPTE and returning 0. > > [...] Applied to iommu (arm/smmu), thanks! [1/3] iommu/io-pgtable-arm: Remove split on unmap behavior https://git.kernel.org/iommu/c/33729a5fc0ca [2/3] iommu/io-pgtable-arm-v7s: Remove split on unmap behavior https://git.kernel.org/iommu/c/fd50651636fb [3/3] iommu: Add a kdoc to iommu_unmap() https://git.kernel.org/iommu/c/6ac7dffe7cca Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev