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 61E25CAC597 for ; Wed, 10 Sep 2025 05:27:51 +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: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=a5WY4Vqi9EWQquRRNalN/tM7qFg/VUudcPB5gYO/EeU=; b=Y9JwZ8s4fqY+qcdb4TVfrq9Z+i oBWy3kQWiWKOANPSqe8OUeL3ejQyPH+Yd0zli5HPtSaSyMX6CFDrU4GG2BgmOl2i2JTz5yBFmAuw/ H5BQ1FN5yeOWZNDOtF54rjCQ4bq93wQmeEeXDd7Vj2a71f6xAciy2RwhNbHk/JdOJd/FZD7GOag/k jQPnxM5cAG8diBhjfD8XmGjpKHaq652rysCX1pvneKuBh8lKnhyTdwQijjTDOE+/YXjQ3ENLvbX/x eu7wAOk3YeEMLW68U9J0AXWHaP3kN8KXlcWL5ASEscXXs4JpJx66krdNcav/D1uu/Rw7qXm3apLmq rDrR7S0g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uwDMz-0000000C9Me-3dR4; Wed, 10 Sep 2025 05:27:49 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uvyPS-00000007NrP-3MLg for linux-nvme@lists.infradead.org; Tue, 09 Sep 2025 13:29:22 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 1B15F6022C; Tue, 9 Sep 2025 13:29:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D7C94C4CEF5; Tue, 9 Sep 2025 13:29:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757424561; bh=iTHTFebdJnIM4qjuR28g9oSbyH9qTLhzazcpZ251F1w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jsG+qsUJK7ffZ/z3OPchqA7x0yHguyPrENB1hNDceKyevn8Y0UY23vIlJKogKoOAV mdweaZvTaV73xdPNvzuLcSgBCkcKJinDpA+AFFif7FJFzPv/yP0eacNr7loyHWPJQl oDjSg5lytMZ5QZs3srGmQGs2aZnhiieWxGdijxV8InWTHYLEbMLD5nMB8zsJzQ7Y5/ n6m5X6Og8JA73w+GsQKGuK+FDZc8VM+Pv/R0ANeQAPkMSUkS/Z7Crlwiferwk3j/aY bciFy1DVrMp5bQJF6IrE2GwiFytJBqVGnuxPc5FU5fznd5ZzC/Ro1XzYA9SknCnnqK nq4YmMAH6+QaA== From: Leon Romanovsky To: Marek Szyprowski Cc: Leon Romanovsky , Jason Gunthorpe , Abdiel Janulgue , Alexander Potapenko , Alex Gaynor , Andrew Morton , Christoph Hellwig , Danilo Krummrich , David Hildenbrand , iommu@lists.linux.dev, Jason Wang , Jens Axboe , Joerg Roedel , Jonathan Corbet , Juergen Gross , kasan-dev@googlegroups.com, Keith Busch , linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-nvme@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-trace-kernel@vger.kernel.org, Madhavan Srinivasan , Masami Hiramatsu , Michael Ellerman , "Michael S. Tsirkin" , Miguel Ojeda , Robin Murphy , rust-for-linux@vger.kernel.org, Sagi Grimberg , Stefano Stabellini , Steven Rostedt , virtualization@lists.linux.dev, Will Deacon , xen-devel@lists.xenproject.org Subject: [PATCH v6 16/16] nvme-pci: unmap MMIO pages with appropriate interface Date: Tue, 9 Sep 2025 16:27:44 +0300 Message-ID: X-Mailer: git-send-email 2.51.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Tue, 09 Sep 2025 22:27:42 -0700 X-BeenThere: linux-nvme@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-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Leon Romanovsky Block layer maps MMIO memory through dma_map_phys() interface with help of DMA_ATTR_MMIO attribute. There is a need to unmap that memory with the appropriate unmap function, something which wasn't possible before adding new REQ attribute to block layer in previous patch. Reviewed-by: Keith Busch Signed-off-by: Leon Romanovsky --- drivers/nvme/host/pci.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 2c6d9506b1725..f8ecc0e0f576d 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -682,11 +682,15 @@ static void nvme_free_prps(struct request *req) { struct nvme_iod *iod = blk_mq_rq_to_pdu(req); struct nvme_queue *nvmeq = req->mq_hctx->driver_data; + unsigned int attrs = 0; unsigned int i; + if (req->cmd_flags & REQ_MMIO) + attrs = DMA_ATTR_MMIO; + for (i = 0; i < iod->nr_dma_vecs; i++) - dma_unmap_page(nvmeq->dev->dev, iod->dma_vecs[i].addr, - iod->dma_vecs[i].len, rq_dma_dir(req)); + dma_unmap_phys(nvmeq->dev->dev, iod->dma_vecs[i].addr, + iod->dma_vecs[i].len, rq_dma_dir(req), attrs); mempool_free(iod->dma_vecs, nvmeq->dev->dmavec_mempool); } @@ -699,15 +703,19 @@ static void nvme_free_sgls(struct request *req) unsigned int sqe_dma_len = le32_to_cpu(iod->cmd.common.dptr.sgl.length); struct nvme_sgl_desc *sg_list = iod->descriptors[0]; enum dma_data_direction dir = rq_dma_dir(req); + unsigned int attrs = 0; + + if (req->cmd_flags & REQ_MMIO) + attrs = DMA_ATTR_MMIO; if (iod->nr_descriptors) { unsigned int nr_entries = sqe_dma_len / sizeof(*sg_list), i; for (i = 0; i < nr_entries; i++) - dma_unmap_page(dma_dev, le64_to_cpu(sg_list[i].addr), - le32_to_cpu(sg_list[i].length), dir); + dma_unmap_phys(dma_dev, le64_to_cpu(sg_list[i].addr), + le32_to_cpu(sg_list[i].length), dir, attrs); } else { - dma_unmap_page(dma_dev, sqe_dma_addr, sqe_dma_len, dir); + dma_unmap_phys(dma_dev, sqe_dma_addr, sqe_dma_len, dir, attrs); } } -- 2.51.0