From nobody Sun Oct 5 14:31:49 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8DCEB15746F; Mon, 4 Aug 2025 13:01:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754312462; cv=none; b=iaD6fjR3Uwp3kS2kCVihYTmPiIayRlupkUXSDrUXIbMOLWec6qsHTyL8zXTBhK5JWfbP6e+06dJFG9TpGZkublHWG17MFpep/aHAgHJm+u122Dz1wcn/E+DuKQP8yA6UERO9OImEqEtNtttOHmTl2zB8FrOEi4g1vV+tn1GY/FU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754312462; c=relaxed/simple; bh=NGf1AYRJqA3TDpKjHdv56/eFxItdmJcxurU8Pl18z1c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=g6A340UqNlfK0xu9jocjAgV8N8dZt9YoGW3ZUXlnM/H7+qIK58hctE8jpt91JVeuE8nZFKuF5bGV8JHQGB2UEEd66JO0X0lgmTcffxQ1h9WuRQaPm5Q54aOPrQNEsUZr/hfWQrqxoPWCHX4Ednfr51S4+uD6x9UA0MtPRmYtjrc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=s2heiyEq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="s2heiyEq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3FECEC4CEF7; Mon, 4 Aug 2025 13:01:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754312461; bh=NGf1AYRJqA3TDpKjHdv56/eFxItdmJcxurU8Pl18z1c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; 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: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 =3D page_pgmap(page); state->map =3D pci_p2pdma_map_type(state->pgmap, dev); - state->bus_off =3D to_p2p_pgmap(state->pgmap)->bus_offset; } =20 /** 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; }; =20 /* 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 pa= ddr) { WARN_ON_ONCE(state->map !=3D PCI_P2PDMA_MAP_BUS_ADDR); - return paddr + state->bus_off; + return paddr + to_p2p_pgmap(state->pgmap)->bus_offsetf; } =20 #endif /* _LINUX_PCI_P2P_H */ --=20 2.50.1