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 X-Spam-Level: X-Spam-Status: No, score=-14.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BBD89C64E8A for ; Wed, 25 Nov 2020 14:05:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 60C6520715 for ; Wed, 25 Nov 2020 14:05:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="OLniI8sF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729933AbgKYOFm (ORCPT ); Wed, 25 Nov 2020 09:05:42 -0500 Received: from mail.kernel.org ([198.145.29.99]:36428 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729902AbgKYOFk (ORCPT ); Wed, 25 Nov 2020 09:05:40 -0500 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 96049206D8; Wed, 25 Nov 2020 14:05:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606313140; bh=CrW9VJQR3WVXiruWhGTnLGV91u/uR09AoTYqRiq51WQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OLniI8sFhqbr1EsqH5ak+Bj8H223FzLjqgx9hy4JvMdUTPhk8AxEK7UuZ3YhHe6vU HCfNTbwZEkTHi2hmkE5h42MvHfwZgRL7CY5oNbB7mb2njdp//PCzN1FeiwISPN8BLB 2KZP2Yo7RgeexiluKCl5OSZ0Qa7qIDoRtkcB+oGc= From: Will Deacon To: Robin Murphy , Sai Prakash Ranjan , Rob Clark , Jordan Crouse , Joerg Roedel Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , Kristian H Kristensen , iommu@lists.linux-foundation.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, Akhil P Oommen , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, freedreno@lists.freedesktop.org Subject: Re: [PATCHv10 0/9] System Cache support for GPU and required SMMU support Date: Wed, 25 Nov 2020 14:05:20 +0000 Message-Id: <160630795189.1943614.1845602767779998183.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 25 Nov 2020 12:30:09 +0530, Sai Prakash Ranjan wrote: > Some hardware variants contain a system cache or the last level > cache(llc). This cache is typically a large block which is shared > by multiple clients on the SOC. GPU uses the system cache to cache > both the GPU data buffers(like textures) as well the SMMU pagetables. > This helps with improved render performance as well as lower power > consumption by reducing the bus traffic to the system memory. > > [...] Applied first two patches on a shared branch for Rob: arm64 (for-next/iommu/io-pgtable-domain-attr), thanks! [1/9] iommu/io-pgtable: Add a domain attribute for pagetable configuration https://git.kernel.org/arm64/c/a7656ecf825a [2/9] iommu/io-pgtable-arm: Add support to use system cache https://git.kernel.org/arm64/c/e67890c97944 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev