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Bottomley" , Helge Deller , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Geoff Levand , "David S. Miller" , Andreas Larsson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, Jason Gunthorpe , Jason Gunthorpe Subject: [PATCH v5 02/14] dma-mapping: convert dummy ops to physical address mapping Date: Wed, 15 Oct 2025 12:12:48 +0300 Message-ID: <20251015-remove-map-page-v5-2-3bbfe3a25cdf@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251015-remove-map-page-v5-0-3bbfe3a25cdf@kernel.org> References: <20251015-remove-map-page-v5-0-3bbfe3a25cdf@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.15-dev Content-Transfer-Encoding: 8bit From: Leon Romanovsky Change dma_dummy_map_page and dma_dummy_unmap_page routines to accept physical address and rename them. Reviewed-by: Jason Gunthorpe Signed-off-by: Leon Romanovsky --- kernel/dma/dummy.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/kernel/dma/dummy.c b/kernel/dma/dummy.c index 92de80e5b057..16a51736a2a3 100644 --- a/kernel/dma/dummy.c +++ b/kernel/dma/dummy.c @@ -11,17 +11,16 @@ static int dma_dummy_mmap(struct device *dev, struct vm_area_struct *vma, return -ENXIO; } -static dma_addr_t dma_dummy_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, enum dma_data_direction dir, - unsigned long attrs) +static dma_addr_t dma_dummy_map_phys(struct device *dev, phys_addr_t phys, + size_t size, enum dma_data_direction dir, unsigned long attrs) { return DMA_MAPPING_ERROR; } -static void dma_dummy_unmap_page(struct device *dev, dma_addr_t dma_handle, +static void dma_dummy_unmap_phys(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction dir, unsigned long attrs) { /* - * Dummy ops doesn't support map_page, so unmap_page should never be + * Dummy ops doesn't support map_phys, so unmap_page should never be * called. */ WARN_ON_ONCE(true); @@ -51,8 +50,8 @@ static int dma_dummy_supported(struct device *hwdev, u64 mask) const struct dma_map_ops dma_dummy_ops = { .mmap = dma_dummy_mmap, - .map_page = dma_dummy_map_page, - .unmap_page = dma_dummy_unmap_page, + .map_phys = dma_dummy_map_phys, + .unmap_phys = dma_dummy_unmap_phys, .map_sg = dma_dummy_map_sg, .unmap_sg = dma_dummy_unmap_sg, .dma_supported = dma_dummy_supported, -- 2.51.0