From mboxrd@z Thu Jan 1 00:00:00 1970 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 39D6B298991; Wed, 15 Oct 2025 09:13:08 +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=1760519589; cv=none; b=HanzYuve6EgCSNIsvyhGO3QT2csxkcB5xNYy9bGwQGElpHlR+MjWjxalrne5SLbWsmi5EJ0nccBiibG9P4B8+La3Z6F+t+j2WW1J11XhFISTMxGxvzx8q17jd2AiF0cuR0/gT793vkn9BnuArsOAf1lHZ4omIA63k4WVezeFVNE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760519589; c=relaxed/simple; bh=ywR7wdHo9iJDPAMnOLxx2KSfcpdMYgaVYoeQgeEMVE0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=ZHyCeU7uvFcnjiWkFUPfmd2Chjd5/pSDqcrgc0b8qlE5fwCUb367tTeM3CfTc780AfX7ruNQXkiMLkJhxJ/KpTRLE1HLOoJUTGT5wiaeKuyIscXcFkLzqlTHARHrIQVFw71tR1meoRWn9iTP+/S99Eo92qJDLNLZzO28EAUVDKU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=T/fn/Q7E; 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="T/fn/Q7E" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0D5DDC4CEF8; Wed, 15 Oct 2025 09:13:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760519588; bh=ywR7wdHo9iJDPAMnOLxx2KSfcpdMYgaVYoeQgeEMVE0=; h=From:To:Cc:Subject:Date:From; b=T/fn/Q7Et3W/XoUP2+BW/BncjyLdn9Q59dx4I+uKrVGVx83N3CoqpvJHFxWuqRsC+ XdbXTMel6OirvBhxiFjPLifrL1qZ1WA1GV0CfnbnyJ0gLcqjgJlrUBUk085bytleC1 Ps1/U8qadzNDPEXTFtbAw3rfhPCKp+JJvyNHVNWiVzxBuTqLX4e1h0uwpfnG6FXSGu ahv0t+DTPlJs6QFO33ojzLxd9DpyMUAoYg7u/ZEvqC360GdrnKWc4kvzqrKjjOzNyu sfpnfCdbcfzoWkUMqnORIpnF4VZ9xrYID8Bc3PCTstBRCa5sVe3z7x9f1ejmwsSTxY 9ePteT4berpfg== From: Leon Romanovsky To: Marek Szyprowski , Robin Murphy , Russell King , Juergen Gross , Stefano Stabellini , Oleksandr Tyshchenko , Richard Henderson , Matt Turner , Thomas Bogendoerfer , "James E.J. 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, Magnus Lindholm , Jason Gunthorpe Subject: [PATCH v5 00/14] Remove DMA map_page/map_resource and their unmap callbacks Date: Wed, 15 Oct 2025 12:12:46 +0300 Message-ID: <20251015-remove-map-page-v5-0-3bbfe3a25cdf@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-alpha@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Change-ID: 20251015-remove-map-page-a28302e6cc7d X-Mailer: b4 0.15-dev Content-Transfer-Encoding: 8bit This series is a combination of previous two steps [1, 2] to reduce number of accesses to struct page in the code "below" DMA layer. In this series, the DMA .map_page/.map_resource/.unmap_page/.unmap_resource callbacks are converted to newly introduced .map_phys/.unmap_phys interfaces. Thanks [1] https://lore.kernel.org/all/cover.1758203802.git.leon@kernel.org [2] https://lore.kernel.org/all/cover.1759071169.git.leon@kernel.org --- Leon Romanovsky (14): dma-mapping: prepare dma_map_ops to conversion to physical address dma-mapping: convert dummy ops to physical address mapping ARM: dma-mapping: Reduce struct page exposure in arch_sync_dma*() ARM: dma-mapping: Switch to physical address mapping callbacks xen: swiotlb: Switch to physical address mapping callbacks dma-mapping: remove unused mapping resource callbacks alpha: Convert mapping routine to rely on physical address MIPS/jazzdma: Provide physical address directly parisc: Convert DMA map_page to map_phys interface powerpc: Convert to physical address DMA mapping sparc: Use physical address DMA mapping x86: Use physical address for DMA mapping xen: swiotlb: Convert mapping routine to rely on physical address dma-mapping: remove unused map_page callback arch/alpha/kernel/pci_iommu.c | 48 ++++----- arch/arm/mm/dma-mapping.c | 180 +++++++++---------------------- arch/mips/jazz/jazzdma.c | 20 ++-- arch/powerpc/include/asm/iommu.h | 8 +- arch/powerpc/kernel/dma-iommu.c | 22 ++-- arch/powerpc/kernel/iommu.c | 14 +-- arch/powerpc/platforms/ps3/system-bus.c | 33 +++--- arch/powerpc/platforms/pseries/ibmebus.c | 15 +-- arch/powerpc/platforms/pseries/vio.c | 21 ++-- arch/sparc/kernel/iommu.c | 30 ++++-- arch/sparc/kernel/pci_sun4v.c | 31 +++--- arch/sparc/mm/io-unit.c | 38 +++---- arch/sparc/mm/iommu.c | 46 ++++---- arch/x86/kernel/amd_gart_64.c | 19 ++-- drivers/parisc/ccio-dma.c | 54 +++++----- drivers/parisc/iommu-helpers.h | 10 +- drivers/parisc/sba_iommu.c | 54 +++++----- drivers/xen/grant-dma-ops.c | 20 ++-- drivers/xen/swiotlb-xen.c | 63 +++++------ include/linux/dma-map-ops.h | 14 +-- kernel/dma/dummy.c | 13 ++- kernel/dma/mapping.c | 26 +---- kernel/dma/ops_helpers.c | 12 ++- 23 files changed, 361 insertions(+), 430 deletions(-) --- base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 change-id: 20251015-remove-map-page-a28302e6cc7d Best regards, -- Leon Romanovsky