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[142.68.25.194]) by smtp.gmail.com with ESMTPSA id g1-20020ac80701000000b003b6325dfc4esm1303137qth.67.2023.02.16.06.36.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Feb 2023 06:36:33 -0800 (PST) Received: from jgg by wakko with local (Exim 4.95) (envelope-from ) id 1pSfNB-002TxB-6K; Thu, 16 Feb 2023 10:36:33 -0400 Date: Thu, 16 Feb 2023 10:36:33 -0400 From: Jason Gunthorpe To: kernel test robot , linux-rdma@vger.kernel.org Cc: Bob Pearson , oe-kbuild-all@lists.linux.dev, Linux Memory Management List Subject: Re: [linux-next:master 7236/13217] arch/mips/include/asm/page.h:255:55: warning: cast to pointer from integer of different size Message-ID: References: <202302162019.2WhIRkSA-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202302162019.2WhIRkSA-lkp@intel.com> X-Rspamd-Queue-Id: BCD3214000C X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: p55impxb1xybchyy39jea7nm4ah168dh X-HE-Tag: 1676558195-397199 X-HE-Meta: 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 BHiMhScm 1kEq0L3F3WZafrAlhBQUiDGC4bUqhDOvIbOIb/qfmAMqCeTWqFwYzzjMli+hU+/kXRbXPDMsiwbi/i52r9gCHbfCzy62vOu4zZP5TRbWIpoLzhK1TQZJ4MboCZiLadOmJFDfEQmnl3/aTL96KQAwMve9p9srtjFAiLSNfANbg+VH5u41Wo3Z2vmE7bTFkymCHkjbii0eW1Ssi1nzgqEcKqFPt3FvXUsNSmWU/iynnK9Os4nlSFf6twygXop6ngXohu2jO1YE1uBvaaqCWhRcn3XCiVba2ofw7SS6xNRhB8VtgEuu6lTLPWXJ9OaRxm4lF8vVxKtOXasOXperLYaPWlmhf/Q== 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: 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