On Thu, Feb 16, 2023 at 08:31:00PM +0800, kernel test robot wrote: > drivers/infiniband/sw/rxe/rxe_mr.c: In function 'rxe_set_page': > >> arch/mips/include/asm/page.h:255:55: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] > 255 | #define virt_to_pfn(kaddr) > PFN_DOWN(virt_to_phys((void *)(kaddr))) Er.. Something has gone really wrong along here. 1) The type of DMA mapped addresses is dma_addr_t NOT u64, so things like this in ib_sg_to_pages() need fixing: u64 dma_addr = sg_dma_address(sg) + sg_offset; u64 prev_addr = dma_addr; 2) When ib_uses_virt_dma() == true we should have a function: struct page *ib_virt_dma_to_page(dma_addr_t dma_addr) That is the inverse of ib_dma_map_page() That should be called in all these places. virt_to_phys is being used because ib_dma_map_page() called page_address(), but arguably this is all wrong and the dma_addr_t should by the phys_addr_t of the page and the inverse should be phys_to_page() Jason
