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b=s2heiyEqDcV3a7/Mlnc3aDnSnlB91n/iIZskVpJMq07doaJ4Y/+n8z6i9uQQ97TTI Jwn0N16sASMrrNaXjxejbTLPAT9lGF7/gcaarJFfI95wEN2Kz7h6p1b0JkTfrEfX1D VmbMlwmvB94SRPw2Xf00i3CbnZQu4DmD3LJOwOg2/BnEk/zOGMDtR/fPvAMB7TZrjt D2BZw3t3cwdHCfJg4yEMRZxnPlAGDpPyhGUZmjuuOELZDDsSP1Cj+D3TXKyV+f0pZ3 MnJhHXzeBublwqXE+kDR1RxC/k4p4smIMvq4VeNTH7oDc1ta1AFC3kGqyk5VZsiQTO Ve6+Tt4c6rKlg== From: Leon Romanovsky To: Alex Williamson Cc: Leon Romanovsky , Jason Gunthorpe , Andrew Morton , Bjorn Helgaas , =?UTF-8?q?Christian=20K=C3=B6nig?= , Christoph Hellwig , dri-devel@lists.freedesktop.org, iommu@lists.linux.dev, Jens Axboe , Joerg Roedel , kvm@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, Logan Gunthorpe , Marek Szyprowski , Robin Murphy , Sumit Semwal , Vivek Kasireddy , Will Deacon Subject: [PATCH v1 01/10] PCI/P2PDMA: Remove redundant bus_offset from map state Date: Mon, 4 Aug 2025 16:00:36 +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: 26C21C000E X-Rspam-User: X-Rspamd-Server: rspam09 X-Stat-Signature: sdd4gdicntq19rxkjb8fo1k9391h1nbf X-HE-Tag: 1754312461-624564 X-HE-Meta: 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 VKLDOhMV mwtRtSO4qh6KWJ6xPOeKJD2rbay0zWTBfSDEfswX0CmJtubH9MJs4j/M/7lo6V/nuYNZqz9J+W4znMM1GbZobjDSnoWr7Egk1ot8wF3g3gpXu6wswJAOk8zdUCoDH5QyF3JfevaSpzQcSUITv1M+8aGI4iXKyHF8HQmKRcH0XHDdCkYqkHuf3kd7L+zicFRQIRmTm0PuSABPMFFZHKdrWQMYbfTqCQOf7Ibp7aaYAX9BOsjzbn0YzdIpk5IoTjNkKsUGmz2uLsy/7PY8hZto0rVUD1MLqHolVeApfEQrS8Dk2q1OoPRv8ZrxK9XmdhRgySakP 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 Remove the bus_off field from pci_p2pdma_map_state since it duplicates information already available in the pgmap structure. The bus_offset is only used in one location (pci_p2pdma_bus_addr_map) and is always identical to pgmap->bus_offset. Reviewed-by: Christoph Hellwig Signed-off-by: Jason Gunthorpe Signed-off-by: Leon Romanovsky --- drivers/pci/p2pdma.c | 1 - include/linux/pci-p2pdma.h | 3 +-- 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index da5657a020074..274bb7bcc0bc5 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -1009,7 +1009,6 @@ void __pci_p2pdma_update_state(struct pci_p2pdma_map_state *state, { state->pgmap = page_pgmap(page); state->map = pci_p2pdma_map_type(state->pgmap, dev); - state->bus_off = to_p2p_pgmap(state->pgmap)->bus_offset; } /** diff --git a/include/linux/pci-p2pdma.h b/include/linux/pci-p2pdma.h index 075c20b161d98..b502fc8b49bf9 100644 --- a/include/linux/pci-p2pdma.h +++ b/include/linux/pci-p2pdma.h @@ -146,7 +146,6 @@ enum pci_p2pdma_map_type { struct pci_p2pdma_map_state { struct dev_pagemap *pgmap; enum pci_p2pdma_map_type map; - u64 bus_off; }; /* helper for pci_p2pdma_state(), do not use directly */ @@ -186,7 +185,7 @@ static inline dma_addr_t pci_p2pdma_bus_addr_map(struct pci_p2pdma_map_state *state, phys_addr_t paddr) { WARN_ON_ONCE(state->map != PCI_P2PDMA_MAP_BUS_ADDR); - return paddr + state->bus_off; + return paddr + to_p2p_pgmap(state->pgmap)->bus_offsetf; } #endif /* _LINUX_PCI_P2P_H */ -- 2.50.1