From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailout2.w1.samsung.com (mailout2.w1.samsung.com [210.118.77.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A633331B839 for ; Tue, 25 Nov 2025 12:20:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.118.77.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764073228; cv=none; b=qZ4RHTe9V9Eq68uXh4emYzg801MA4FmBWTVQyexqDqePsrso/toZ9tGdJvu+XKMBx1hi81P81fOEtFcKLN3fof5Nt64ZS/5g9oe6bgF+QzkUBbtOMEOZNYXWj8Ow8MQxo6Nqqyz4bri/pKZhAo6Jg5fY015VMMKR1pHuBM8C0DQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764073228; c=relaxed/simple; bh=GzcVinwaftNxCi4QNi4ACaQRyXgr3LiBA/5QCfyUTeQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:From:In-Reply-To: Content-Type:References; b=baOkxtlha3PD/ncojmK3RK4b1Cx0JivoJa2YhGiotvv3vLBqH7mSh4nXFYYvo0RnFPCsZiIDdN+5FP2Xaxp+qC1oZh3bxPPcrgh8A48u63Z3njaNMdCf5qJvmYTlKFJR7Jm059AfgfcWWEFHOxedG0VIuMx4QTXhaIWtCGC0oUU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com; spf=pass smtp.mailfrom=samsung.com; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b=uT4u6I+G; arc=none smtp.client-ip=210.118.77.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=samsung.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="uT4u6I+G" Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout2.w1.samsung.com (KnoxPortal) with ESMTP id 20251125122024euoutp029727a94dc8cbc8c2f86d41ee801b7a58~7P0BZpU_p1823918239euoutp02W for ; Tue, 25 Nov 2025 12:20:24 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.w1.samsung.com 20251125122024euoutp029727a94dc8cbc8c2f86d41ee801b7a58~7P0BZpU_p1823918239euoutp02W DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1764073224; bh=VGVL6jH+cfsN6E/RG/DNDJl9qK7gyfU7OZ28BKtUTvk=; h=Date:Subject:To:Cc:From:In-Reply-To:References:From; b=uT4u6I+GRTMjyBBF8LI6AwUxfoBf/pJG7qeeLs6SIvIWd+Vh+RP6AzKuOq2VVXNym aArrnUwQXvmR9tPdgjF01oZIxI2X7u3c2Pz8bfvr1VUp3pE5F4W6CIxwPXdE8sCnkt GMbygddg5tu+kM4PicThMt36KEdLdvtrk9Gx33vQ= Received: from eusmtip1.samsung.com (unknown [203.254.199.221]) by eucas1p1.samsung.com (KnoxPortal) with ESMTPA id 20251125122024eucas1p1b11fd80c28e1d11ff839db6ea5152778~7P0BKw_7i1843218432eucas1p1X; Tue, 25 Nov 2025 12:20:24 +0000 (GMT) Received: from [106.210.134.192] (unknown [106.210.134.192]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20251125122024eusmtip181472ea669440d5a2cc7fd86bf693e27~7P0Azf04s1902319023eusmtip1M; Tue, 25 Nov 2025 12:20:23 +0000 (GMT) Message-ID: <0d195d46-c409-484e-a3c8-1dac0ecc376f@samsung.com> Date: Tue, 25 Nov 2025 13:20:23 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Betterbird (Windows) Subject: Re: [PATCH] iommu/dma: add missing support for DMA_ATTR_MMIO for dma_iova_unlink() To: Leon Romanovsky Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org, Robin Murphy , Joerg Roedel , Will Deacon , Jason Gunthorpe Content-Language: en-US From: Marek Szyprowski In-Reply-To: <20251124172627.GE12483@unreal> Content-Transfer-Encoding: 7bit X-CMS-MailID: 20251125122024eucas1p1b11fd80c28e1d11ff839db6ea5152778 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20251124171014eucas1p21d3a0f2c10b43bfdb7861ee804f09951 X-EPHeader: CA X-CMS-RootMailID: 20251124171014eucas1p21d3a0f2c10b43bfdb7861ee804f09951 References: <20251124170955.3884351-1-m.szyprowski@samsung.com> <20251124172627.GE12483@unreal> On 24.11.2025 18:26, Leon Romanovsky wrote: > On Mon, Nov 24, 2025 at 06:09:55PM +0100, Marek Szyprowski wrote: >> Commit c288d657dd51 added support for DMA_ATTR_MMIO attribute in the >> dma_iova_link() code path, but missed that the CPU cache is being also >> touched in the dma_iova_unlink() path. Fix this. >> >> Fixes: c288d657dd51 ("iommu/dma: implement DMA_ATTR_MMIO for dma_iova_link().") >> Signed-off-by: Marek Szyprowski >> --- >> drivers/iommu/dma-iommu.c | 5 +++-- >> 1 file changed, 3 insertions(+), 2 deletions(-) > Reviewed-by: Leon Romanovsky Applied to dma-mapping-fixes. Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland