From nobody Wed Oct 1 22:33:22 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 311AD23183F; Sun, 28 Sep 2025 15:03:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759071787; cv=none; b=c83JWQ0QD+KdGp2A7swiK8vAgBwGGYXEm0jeqAmsh7VoF9zzFmpth1MSUF2wYlJqBvmAB8YFmbNkNVf40AqC/4xRB6wkC2BN4RatilcsJcxCUJKp6qgb/S0RIVTExMVcrN3w51NrnJGBRMR66AVqX90hIHg7Ol+aw4kEhIV4Ue0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759071787; c=relaxed/simple; bh=4MEtXfdS28rAh2K80VhDxfAqakr0Nc2oB0/xCEv8vjk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JVUO0mtZlT0KI2kF0lju/eeTPQ6yjElh9vmOw6PhqJTFOpAGRj3JJkabTxnxUeX+OmoBJWlIV+1rnywoT84KeKTh6ExBWkU6G/CkeAnxn6QDPw7orGGr6LXc063qS1EX4iNH7tWqulFo4w2NMh1aBiEtB11HVoEThcKVGaabrtU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MLl/BjLp; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MLl/BjLp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 19E28C4CEF0; Sun, 28 Sep 2025 15:03:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1759071786; bh=4MEtXfdS28rAh2K80VhDxfAqakr0Nc2oB0/xCEv8vjk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MLl/BjLpSDt9SBh2norJcU2F46F/r6g6h87RuQBYkoAGcZPnCd215FCQzpvgxERCA JoAcWDlpaaGMBeilORD02wS46EGf5rRgJdiyxnTdl/dSUOOThvXNKsn2RYd2BOpQtn z6ab9Oz6SBGmGCyKrwpxkOF/E4FINpdFsv5bLV9vRy30LirIChJsKF36dmPdg/bAIF IwPNo8c23EdJkconmObCTIOoESZ2J20hDLi0fpZt7g0Y3Geyi0wHUvkyVUleo7ZhH3 UGMgKulTpskho2dGEbm7PUSwJmGYxd5S4PBVSl8pNrZ4ST3LrqqCETAWzyt5QLfi+Q 4J6w++XMD0tWg== From: Leon Romanovsky To: Marek Szyprowski Cc: Leon Romanovsky , Jason Gunthorpe , Andreas Larsson , Borislav Petkov , Dave Hansen , "David S. Miller" , Geoff Levand , Helge Deller , Ingo Molnar , iommu@lists.linux.dev, "James E.J. Bottomley" , Jason Wang , Juergen Gross , linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Madhavan Srinivasan , Matt Turner , Michael Ellerman , "Michael S. Tsirkin" , Richard Henderson , sparclinux@vger.kernel.org, Stefano Stabellini , Thomas Bogendoerfer , Thomas Gleixner , virtualization@lists.linux.dev, x86@kernel.org, xen-devel@lists.xenproject.org, Magnus Lindholm Subject: [PATCH v1 8/9] xen: swiotlb: Convert mapping routine to rely on physical address Date: Sun, 28 Sep 2025 18:02:28 +0300 Message-ID: <573fbadd743851838a91a8dbc84b4506cea2192c.1759071169.git.leon@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Leon Romanovsky Switch to .map_phys callback instead of .map_page. Signed-off-by: Leon Romanovsky --- drivers/xen/grant-dma-ops.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/drivers/xen/grant-dma-ops.c b/drivers/xen/grant-dma-ops.c index 29257d2639db..7f76e516fe24 100644 --- a/drivers/xen/grant-dma-ops.c +++ b/drivers/xen/grant-dma-ops.c @@ -163,18 +163,22 @@ static void xen_grant_dma_free_pages(struct device *d= ev, size_t size, xen_grant_dma_free(dev, size, page_to_virt(vaddr), dma_handle, 0); } =20 -static dma_addr_t xen_grant_dma_map_page(struct device *dev, struct page *= page, - unsigned long offset, size_t size, +static dma_addr_t xen_grant_dma_map_phys(struct device *dev, phys_addr_t p= hys, + size_t size, enum dma_data_direction dir, unsigned long attrs) { struct xen_grant_dma_data *data; + unsigned long offset =3D offset_in_page(phys); unsigned long dma_offset =3D xen_offset_in_page(offset), pfn_offset =3D XEN_PFN_DOWN(offset); unsigned int i, n_pages =3D XEN_PFN_UP(dma_offset + size); grant_ref_t grant; dma_addr_t dma_handle; =20 + if (attrs & DMA_ATTR_MMIO) + return DMA_MAPPING_ERROR; + if (WARN_ON(dir =3D=3D DMA_NONE)) return DMA_MAPPING_ERROR; =20 @@ -190,7 +194,7 @@ static dma_addr_t xen_grant_dma_map_page(struct device = *dev, struct page *page, =20 for (i =3D 0; i < n_pages; i++) { gnttab_grant_foreign_access_ref(grant + i, data->backend_domid, - pfn_to_gfn(page_to_xen_pfn(page) + i + pfn_offset), + pfn_to_gfn(page_to_xen_pfn(phys_to_page(phys)) + i + pfn_offset), dir =3D=3D DMA_TO_DEVICE); } =20 @@ -199,7 +203,7 @@ static dma_addr_t xen_grant_dma_map_page(struct device = *dev, struct page *page, return dma_handle; } =20 -static void xen_grant_dma_unmap_page(struct device *dev, dma_addr_t dma_ha= ndle, +static void xen_grant_dma_unmap_phys(struct device *dev, dma_addr_t dma_ha= ndle, size_t size, enum dma_data_direction dir, unsigned long attrs) { @@ -242,7 +246,7 @@ static void xen_grant_dma_unmap_sg(struct device *dev, = struct scatterlist *sg, return; =20 for_each_sg(sg, s, nents, i) - xen_grant_dma_unmap_page(dev, s->dma_address, sg_dma_len(s), dir, + xen_grant_dma_unmap_phys(dev, s->dma_address, sg_dma_len(s), dir, attrs); } =20 @@ -257,7 +261,7 @@ static int xen_grant_dma_map_sg(struct device *dev, str= uct scatterlist *sg, return -EINVAL; =20 for_each_sg(sg, s, nents, i) { - s->dma_address =3D xen_grant_dma_map_page(dev, sg_page(s), s->offset, + s->dma_address =3D xen_grant_dma_map_phys(dev, sg_phys(s), s->length, dir, attrs); if (s->dma_address =3D=3D DMA_MAPPING_ERROR) goto out; @@ -286,8 +290,8 @@ static const struct dma_map_ops xen_grant_dma_ops =3D { .free_pages =3D xen_grant_dma_free_pages, .mmap =3D dma_common_mmap, .get_sgtable =3D dma_common_get_sgtable, - .map_page =3D xen_grant_dma_map_page, - .unmap_page =3D xen_grant_dma_unmap_page, + .map_phys =3D xen_grant_dma_map_phys, + .unmap_phys =3D xen_grant_dma_unmap_phys, .map_sg =3D xen_grant_dma_map_sg, .unmap_sg =3D xen_grant_dma_unmap_sg, .dma_supported =3D xen_grant_dma_supported, --=20 2.51.0