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[2620:137:e000::1:20]) by mx.google.com with ESMTP id eb14-20020a0564020d0e00b00451c76e7a25si253328edb.211.2022.09.16.05.23.00; Fri, 16 Sep 2022 05:23:25 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=R6QPhiyg; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230369AbiIPL5p (ORCPT + 99 others); Fri, 16 Sep 2022 07:57:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44110 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229999AbiIPL5l (ORCPT ); Fri, 16 Sep 2022 07:57:41 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 911FB37FA5 for ; Fri, 16 Sep 2022 04:57:39 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 20B8C62B39 for ; Fri, 16 Sep 2022 11:57:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 816C0C43142 for ; Fri, 16 Sep 2022 11:57:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1663329458; bh=4mAe95msSQk1H+17nLH8cwEk5y1qk5VEu4IIy8UaDa8=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=R6QPhiyg9IXbFuqFLDXgN+P1tpHp6w/wnaxSvuTy3k596sfMSPVyO5SIxdulHhQ6m lYtKfB/Cf5WDFmVsfOKhM8CcR9qNsz16L+9BxCvu4bOAGPgYhj+B3vQolsh58MhygI r1VBOyeDPwG9jbmPviGl0bPpu6ZKZvbpLI945/Um+8ZSU83ivWww5wmG4Se1x/SeqA TSZ6wtKQUBjN7ueYBxMqJdy2a/Hm2+EgY0J8X+CeTNqXlDc5Jt2cd8b6E3OqJB4fWa PPfWr5iLPngTKOgQ6mSPhN5Vj1ImY2vt3dPsD+p9brHvX6VGvexUUO/VECLn7ARPJm B3RIaFPKYhfEg== Received: by mail-vs1-f52.google.com with SMTP id j7so17040279vsr.13 for ; Fri, 16 Sep 2022 04:57:38 -0700 (PDT) X-Gm-Message-State: ACrzQf0g4rZ5mDp9/ECDdCwNRGZeFiz0+OiYM+PbZHzFqRPkwAg4jw3i KP7awMDqjEKrPbucVinzIu4YVIl3VdvCcQ0hGw== X-Received: by 2002:a67:c097:0:b0:390:d097:df91 with SMTP id x23-20020a67c097000000b00390d097df91mr1767890vsi.85.1663329457398; Fri, 16 Sep 2022 04:57:37 -0700 (PDT) MIME-Version: 1.0 References: <20220916094152.87137-1-j@jannau.net> <20220916094152.87137-4-j@jannau.net> In-Reply-To: <20220916094152.87137-4-j@jannau.net> From: Rob Herring Date: Fri, 16 Sep 2022 06:57:26 -0500 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v5 3/5] iommu/io-pgtable: Add DART subpage protection support To: Janne Grunau Cc: iommu@lists.linux.dev, Konrad Dybcio , asahi@lists.linux.dev, Sven Peter , Alyssa Rosenzweig , Hector Martin , Joerg Roedel , Will Deacon , Linux IOMMU , linux-arm-kernel , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 16, 2022 at 4:43 AM Janne Grunau wrote: > > From: Sven Peter > > DART allows to only expose a subpage to the device. While this is an > optional feature on the M1 DARTs the new ones present on the Pro/Max > models require this field in every PTE. > > Signed-off-by: Sven Peter > Signed-off-by: Janne Grunau > > --- > > (no changes since v3) > > Changes in v3: > - apply change to io-pgtable-dart.c > > drivers/iommu/io-pgtable-dart.c | 8 ++++++++ > 1 file changed, 8 insertions(+) Reviewed-by: Rob Herring