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=-9.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 AB478C4338F for ; Wed, 28 Jul 2021 14:11:22 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 7C3BF60EBB for ; Wed, 28 Jul 2021 14:11:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7C3BF60EBB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=CVO6NLVjSqTuQOCPUevYUATVDbPQxKo6hRtr5RFyv6k=; b=t799khKmP+wmJw irVAtQV/6Y0N/WUVXIpPutyU/lqN+DAY3OYO+8xIH4a6UZ7Ji6bEIMbmcW9o3XMTTmjecK1pIKmLN RxVrJTcvIYgChWECK+1LZd2uGV0e8IggQBlEe6nRE1o9e8L58IaN+a+Q/+Kc2DNtOIvw3KlRouRvd 87PO3WPKN3ZOwkEbhVJ8x4m4fsC7gx1gosJufVCimvx1084joReMgklLhv/TzJ7l60RygaD+L6v/e Wvi8j2MML+Da4++CB7A0mqVgX4CqxtaachcHW8ZEIXpdglvamt9g0/b4uNJYpblLQux21Luwn04AQ JQJZMgjqecYnJk8fhyyg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8kEm-000yPO-4u; Wed, 28 Jul 2021 14:08:45 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8k7J-000uNW-0P for linux-arm-kernel@lists.infradead.org; Wed, 28 Jul 2021 14:01:02 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id A326E600EF; Wed, 28 Jul 2021 14:00:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1627480860; bh=sNNg1eBjaBERoOL+pNGqJG1GnXOiFtnWCHGA3ZA1guw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=uSK3rYX334vCPmIzWf/THTX34yLnn8ni/QBiKG2wSaCIb8flS7V+h/B0eP4sytljM /dQCjspApub1KKi22poI11WUSYyfjIatH2hfq7qGrbqIBlbq4S7vAjAAhS+KS8TxV8 5woiYW5ZUA5Il7RUYHhP1Ry/YyXRyBxz8Ox2BtJMlMkWsKjuc9kKYiDOiacib9sy0i aPfPMZkkYmDggAK37mahkCnICO1fDZeN0JaiIFzgSxGeXShgdXEF1DAYPxU22ln/Di kGzFe7xSqPBokwQ8jjNqfX2hYMIrPy1ah7XaTQx6UwViWPpfyLEfsPSfZ5MEsWr3Ps NAkXFU5X3exlg== Date: Wed, 28 Jul 2021 17:00:53 +0300 From: Georgi Djakov To: Sai Prakash Ranjan Cc: Will Deacon , Robin Murphy , Joerg Roedel , Jordan Crouse , Rob Clark , Akhil P Oommen , isaacm@codeaurora.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno , Kristian H Kristensen , Sean Paul , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org Subject: Re: [PATCH 0/3] iommu/drm/msm: Allow non-coherent masters to use system cache Message-ID: <20210728140052.GB22887@mms-0441> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210728_070101_113173_344CC971 X-CRM114-Status: GOOD ( 19.16 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jan 11, 2021 at 07:45:02PM +0530, Sai Prakash Ranjan wrote: > commit ecd7274fb4cd ("iommu: Remove unused IOMMU_SYS_CACHE_ONLY flag") > removed unused IOMMU_SYS_CACHE_ONLY prot flag and along with it went > the memory type setting required for the non-coherent masters to use > system cache. Now that system cache support for GPU is added, we will > need to set the right PTE attribute for GPU buffers to be sys cached. > Without this, the system cache lines are not allocated for GPU. > > So the patches in this series introduces a new prot flag IOMMU_LLC, > renames IO_PGTABLE_QUIRK_ARM_OUTER_WBWA to IO_PGTABLE_QUIRK_PTW_LLC > and makes GPU the user of this protection flag. Hi Sai, Thank you for the patchset! Are you planning to refresh it, as it does not apply anymore? Thanks, Georgi > > The series slightly depends on following 2 patches posted earlier and > is based on msm-next branch: > * https://lore.kernel.org/patchwork/patch/1363008/ > * https://lore.kernel.org/patchwork/patch/1363010/ > > Sai Prakash Ranjan (3): > iommu/io-pgtable: Rename last-level cache quirk to > IO_PGTABLE_QUIRK_PTW_LLC > iommu/io-pgtable-arm: Add IOMMU_LLC page protection flag > drm/msm: Use IOMMU_LLC page protection flag to map gpu buffers > > drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 3 +++ > drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- > drivers/gpu/drm/msm/msm_iommu.c | 3 +++ > drivers/gpu/drm/msm/msm_mmu.h | 4 ++++ > drivers/iommu/io-pgtable-arm.c | 9 ++++++--- > include/linux/io-pgtable.h | 6 +++--- > include/linux/iommu.h | 6 ++++++ > 7 files changed, 26 insertions(+), 7 deletions(-) > > > base-commit: 00fd44a1a4700718d5d962432b55c09820f7e709 > -- > QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member > of Code Aurora Forum, hosted by The Linux Foundation > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel