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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 v3 10/16] xen: swiotlb: Open code map_resource callback Date: Thu, 14 Aug 2025 20:54:01 +0300 Message-ID: X-Mailer: git-send-email 2.50.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: C05CF18000C X-Rspam-User: X-Stat-Signature: ppih7knfuy5jdxn7mbg4r3cxksugnmm5 X-Rspamd-Server: rspam09 X-HE-Tag: 1755194103-308683 X-HE-Meta: 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 vd5sYpTS CsZUTKiY1YJLEMn75qM3LS36AZuBD4QuY9CYmcAF3ZLboSEdAo45kzduvPr1gBYQKBRM8EEYSQNzxmyWD3nLPwdYgc756oQBvBC23OmHm8iGFbBFgWXfM47IvMfqUUExLhCFDO1USNU5Kg4b7TpeKUv+WXHaCHMMLF5bsLNH2tIN/8lo4tldKUBc8jlBsLwSjsAFKAKnEccVRUSektGhqEGMr9+HZEOxlYrSfraLiYt6hyJceW2jnov1R4TCvgeQUVH6ydQGNPf7wVAgFfVJD3HtYW66/8EClTCG0hOLVAVuDe+7kBAMJN3SvySFrJIATe7ib1R2WGkA3/3LHd+VdP/nTKGtczI2+KxVHBMZyV2Y5xJPxCYetPPnAIoJeAAm+ctCK5EijKJaORXMGcjCSFerRlDbjtDLiO1rJ X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Leon Romanovsky General dma_direct_map_resource() is going to be removed in next patch, so simply open-code it in xen driver. Reviewed-by: Juergen Gross Signed-off-by: Leon Romanovsky --- drivers/xen/swiotlb-xen.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index da1a7d3d377c..dd7747a2de87 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -392,6 +392,25 @@ xen_swiotlb_sync_sg_for_device(struct device *dev, struct scatterlist *sgl, } } +static dma_addr_t xen_swiotlb_direct_map_resource(struct device *dev, + phys_addr_t paddr, + size_t size, + enum dma_data_direction dir, + unsigned long attrs) +{ + dma_addr_t dma_addr = paddr; + + if (unlikely(!dma_capable(dev, dma_addr, size, false))) { + dev_err_once(dev, + "DMA addr %pad+%zu overflow (mask %llx, bus limit %llx).\n", + &dma_addr, size, *dev->dma_mask, dev->bus_dma_limit); + WARN_ON_ONCE(1); + return DMA_MAPPING_ERROR; + } + + return dma_addr; +} + /* * Return whether the given device DMA address mask can be supported * properly. For example, if your device can only drive the low 24-bits @@ -426,5 +445,5 @@ const struct dma_map_ops xen_swiotlb_dma_ops = { .alloc_pages_op = dma_common_alloc_pages, .free_pages = dma_common_free_pages, .max_mapping_size = swiotlb_max_mapping_size, - .map_resource = dma_direct_map_resource, + .map_resource = xen_swiotlb_direct_map_resource, }; -- 2.50.1