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Message-ID: <20181221094812.GA2713@lst.de>
Date: Fri, 21 Dec 2018 10:48:12 +0100
From: Christoph Hellwig <hch@....de>
To: Christoph Hellwig <hch@...radead.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
iommu@...ts.linux-foundation.org,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Robin Murphy <robin.murphy@....com>,
linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL] dma-mapping updates for Linux 4.21
On Fri, Dec 21, 2018 at 10:45:49AM +0100, Christoph Hellwig wrote:
> The following changes since commit c9d76d0655c06b8c1f944e46c4fd9e9cf4b331c0:
>
> dma-mapping: fix return type of dma_set_max_seg_size() (2018-11-27 08:39:52 +0100)
And that actually is the first commit already in the tree, sorry.
Updated git-request-pull output attached:
The following changes since commit ef78e5ec9214376c5cb989f5da70b02d0c117b66:
ia64: export node_distance function (2018-11-26 18:30:40 -0800)
are available in the Git repository at:
git://git.infradead.org/users/hch/dma-mapping.git tags/dma-mapping-4.21
for you to fetch changes up to 8b1cce9f5832a8eda17d37a3c49fb7dd2d650f46:
dma-mapping: fix inverted logic in dma_supported (2018-12-20 17:47:55 +0100)
----------------------------------------------------------------
DMA mapping updates for Linux 4.21
A huge update this time, but a lot of that is just consolidating or
removing code:
- provide a common DMA_MAPPING_ERROR definition and avoid indirect
calls for dma_map_* error checking
- use direct calls for the DMA direct mapping case, avoiding huge
retpoline overhead for high performance workloads
- merge the swiotlb dma_map_ops into dma-direct
- provide a generic remapping DMA consistent allocator for architectures
that have devices that perform DMA that is not cache coherent. Based
on the existing arm64 implementation and also used for csky now.
- improve the dma-debug infrastructure, including dynamic allocation
of entries (Robin Murphy)
- default to providing chaining scatterlist everywhere, with opt-outs
for the few architectures (alpha, parisc, most arm32 variants) that
can't cope with it
- misc sparc32 dma-related cleanups
- remove the dma_mark_clean arch hook used by swiotlb on ia64 and
replace it with the generic noncoherent infrastructure
- fix the return type of dma_set_max_seg_size (Niklas Söderlund)
- move the dummy dma ops for not DMA capable devices from arm64 to
common code (Robin Murphy)
- ensure dma_alloc_coherent returns zeroed memory to avoid kernel data
leaks through userspace. We already did this for most common
architectures, but this ensures we do it everywhere.
dma_zalloc_coherent has been deprecated and can hopefully be
removed after -rc1 with a coccinelle script.
----------------------------------------------------------------
Christoph Hellwig (60):
dma-direct: provide page based alloc/free helpers
dma-direct: reject highmem pages from dma_alloc_from_contiguous
dma-mapping: move the remap helpers to a separate file
dma-mapping: move the arm64 noncoherent alloc/free support to common code
dma-mapping: support highmem in the generic remap allocator
dma-remap: support DMA_ATTR_NO_KERNEL_MAPPING
csky: don't select DMA_NONCOHERENT_OPS
csky: don't use GFP_DMA in atomic_pool_init
csky: use the generic remapping dma alloc implementation
dma-mapping: provide a generic DMA_MAPPING_ERROR
dma-direct: remove the mapping_error dma_map_ops method
arm: remove the mapping_error dma_map_ops method
powerpc/iommu: remove the mapping_error dma_map_ops method
mips/jazz: remove the mapping_error dma_map_ops method
s390: remove the mapping_error dma_map_ops method
sparc: remove the mapping_error dma_map_ops method
parisc/ccio: remove the mapping_error dma_map_ops method
parisc/sba_iommu: remove the mapping_error dma_map_ops method
arm64: remove the dummy_dma_ops mapping_error method
alpha: remove the mapping_error dma_map_ops method
ia64/sba_iommu: improve internal map_page users
ia64/sba_iommu: remove the mapping_error dma_map_ops method
ia64/sn: remove the mapping_error dma_map_ops method
x86/amd_gart: remove the mapping_error dma_map_ops method
x86/calgary: remove the mapping_error dma_map_ops method
iommu: remove the mapping_error dma_map_ops method
iommu/intel: small map_page cleanup
iommu/vt-d: remove the mapping_error dma_map_ops method
iommu/dma-iommu: remove the mapping_error dma_map_ops method
xen-swiotlb: remove the mapping_error dma_map_ops method
dma-mapping: remove the mapping_error dma_map_ops method
dma-mapping: return an error code from dma_mapping_error
arch: switch the default on ARCH_HAS_SG_CHAIN
sparc: remove not needed sbus_dma_ops methods
sparc: factor the dma coherent mapping into helper
sparc: remove the sparc32_dma_ops indirection
sparc: remove not required includes from dma-mapping.h
sparc: move the leon PCI memory space comment to <asm/leon.h>
sparc: merge 32-bit and 64-bit version of pci.h
sparc: use DT node full_name in sparc_dma_alloc_resource
dma-mapping: remove a pointless memset in dma_atomic_pool_init
dma-mapping: simplify the dma_sync_single_range_for_{cpu,device} implementation
dma-mapping: merge dma_unmap_page_attrs and dma_unmap_single_attrs
dma-mapping: move dma_get_required_mask to kernel/dma
dma-mapping: move various slow path functions out of line
dma-mapping: move dma_cache_sync out of line
dma-mapping: always build the direct mapping code
swiotlb: remove SWIOTLB_MAP_ERROR
swiotlb: remove dma_mark_clean
dma-direct: improve addressability error reporting
dma-direct: use dma_direct_map_page to implement dma_direct_map_sg
dma-direct: merge swiotlb_dma_ops into the dma_direct code
vmd: use the proper dma_* APIs instead of direct methods calls
dma-mapping: bypass indirect calls for dma-direct
ia64: only select ARCH_HAS_DMA_COHERENT_TO_PFN if swiotlb is enabled
arm64: default to the direct mapping in get_arch_dma_ops
sparc/io-unit: fix ->map_sg return value
sparc/iommu: fix ->map_sg return value
dma-mapping: zero memory returned from dma_alloc_*
dma-mapping: deprecate dma_zalloc_coherent
Marek Szyprowski (1):
dma-mapping: fix lack of DMA address assignment in generic remap allocator
Nathan Chancellor (1):
PCI: Remove unused attr variable in pci_dma_configure
Niklas Söderlund (1):
dma-mapping: fix return type of dma_set_max_seg_size()
Robin Murphy (9):
dma-debug: Expose nr_total_entries in debugfs
dma-debug: Use pr_fmt()
dma-debug: Dynamically expand the dma_debug_entry pool
dma-debug: Make leak-like behaviour apparent
x86/dma/amd-gart: Stop resizing dma_debug_entry pool
dma/debug: Remove dma_debug_resize_entries()
dma-debug: Batch dma_debug_entry allocation
dma-mapping: factor out dummy DMA ops
ACPI / scan: Refactor _CCA enforcement
Thierry Reding (1):
dma-mapping: fix inverted logic in dma_supported
Documentation/DMA-API.txt | 29 +-
.../features/io/sg-chain/arch-support.txt | 33 --
Documentation/x86/x86_64/boot-options.txt | 5 +-
arch/alpha/Kconfig | 2 +-
arch/alpha/include/asm/dma-mapping.h | 2 +-
arch/alpha/kernel/pci_iommu.c | 16 +-
arch/arc/Kconfig | 2 -
arch/arc/mm/cache.c | 2 +-
arch/arc/mm/dma.c | 2 +-
arch/arm/Kconfig | 4 +-
arch/arm/common/dmabounce.c | 12 +-
arch/arm/include/asm/dma-iommu.h | 2 -
arch/arm/include/asm/dma-mapping.h | 2 +-
arch/arm/mm/dma-mapping-nommu.c | 14 +-
arch/arm/mm/dma-mapping.c | 39 +--
arch/arm64/Kconfig | 3 +-
arch/arm64/include/asm/dma-mapping.h | 8 +-
arch/arm64/mm/dma-mapping.c | 286 +----------------
arch/c6x/Kconfig | 1 -
arch/c6x/mm/dma-coherent.c | 5 +-
arch/csky/Kconfig | 3 +-
arch/csky/mm/dma-mapping.c | 142 +--------
arch/h8300/Kconfig | 1 -
arch/hexagon/Kconfig | 1 -
arch/ia64/Kconfig | 4 +-
arch/ia64/hp/common/hwsw_iommu.c | 2 +-
arch/ia64/hp/common/sba_iommu.c | 87 ++---
arch/ia64/kernel/dma-mapping.c | 21 +-
arch/ia64/mm/init.c | 19 +-
arch/ia64/sn/pci/pci_dma.c | 8 +-
arch/m68k/Kconfig | 1 -
arch/m68k/kernel/dma.c | 2 +-
arch/microblaze/Kconfig | 1 -
arch/microblaze/mm/consistent.c | 2 +-
arch/mips/Kconfig | 1 -
arch/mips/include/asm/dma-mapping.h | 4 +-
arch/mips/include/asm/jazzdma.h | 6 -
arch/mips/jazz/jazzdma.c | 16 +-
arch/nds32/Kconfig | 1 -
arch/nios2/Kconfig | 1 -
arch/openrisc/Kconfig | 1 -
arch/openrisc/kernel/dma.c | 2 +-
arch/parisc/Kconfig | 2 +-
arch/parisc/kernel/pci-dma.c | 4 +-
arch/parisc/kernel/setup.c | 4 -
arch/powerpc/Kconfig | 1 -
arch/powerpc/include/asm/dma-mapping.h | 1 -
arch/powerpc/include/asm/iommu.h | 4 -
arch/powerpc/kernel/dma-iommu.c | 6 -
arch/powerpc/kernel/dma-swiotlb.c | 17 +-
arch/powerpc/kernel/iommu.c | 28 +-
arch/powerpc/platforms/cell/iommu.c | 1 -
arch/powerpc/platforms/pseries/vio.c | 3 +-
arch/riscv/Kconfig | 1 -
arch/riscv/include/asm/dma-mapping.h | 15 -
arch/s390/Kconfig | 2 -
arch/s390/pci/pci_dma.c | 20 +-
arch/sh/Kconfig | 1 -
arch/sparc/Kconfig | 2 -
arch/sparc/include/asm/dma-mapping.h | 8 +-
arch/sparc/include/asm/dma.h | 48 +--
arch/sparc/include/asm/leon.h | 9 +
arch/sparc/include/asm/pci.h | 53 +++-
arch/sparc/include/asm/pci_32.h | 41 ---
arch/sparc/include/asm/pci_64.h | 52 ---
arch/sparc/kernel/iommu.c | 12 +-
arch/sparc/kernel/iommu_common.h | 2 -
arch/sparc/kernel/ioport.c | 243 +++-----------
arch/sparc/kernel/pci_sun4v.c | 14 +-
arch/sparc/mm/io-unit.c | 80 +++--
arch/sparc/mm/iommu.c | 160 ++++++----
arch/unicore32/Kconfig | 1 -
arch/x86/Kconfig | 2 -
arch/x86/kernel/amd_gart_64.c | 63 +---
arch/x86/kernel/pci-calgary_64.c | 30 +-
arch/x86/kernel/pci-dma.c | 2 +-
arch/x86/kernel/pci-swiotlb.c | 4 +-
arch/x86/mm/mem_encrypt.c | 7 -
arch/x86/pci/sta2x11-fixup.c | 1 -
arch/xtensa/Kconfig | 3 +-
arch/xtensa/kernel/pci-dma.c | 2 +-
drivers/acpi/scan.c | 5 +
drivers/base/platform.c | 34 +-
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 +-
drivers/iommu/amd_iommu.c | 31 +-
drivers/iommu/dma-iommu.c | 23 +-
drivers/iommu/intel-iommu.c | 26 +-
drivers/misc/mic/host/mic_boot.c | 2 +-
drivers/parisc/ccio-dma.c | 10 +-
drivers/parisc/sba_iommu.c | 10 +-
drivers/pci/controller/vmd.c | 48 +--
drivers/pci/pci-driver.c | 4 +-
drivers/xen/swiotlb-xen.c | 36 +--
include/asm-generic/dma-mapping.h | 2 +-
include/linux/dma-debug.h | 34 --
include/linux/dma-direct.h | 19 +-
include/linux/dma-iommu.h | 1 -
include/linux/dma-mapping.h | 350 +++++++++------------
include/linux/dma-noncoherent.h | 7 +-
include/linux/scatterlist.h | 6 +-
include/linux/swiotlb.h | 77 ++---
kernel/dma/Kconfig | 14 +-
kernel/dma/Makefile | 5 +-
kernel/dma/debug.c | 259 ++++++---------
kernel/dma/direct.c | 222 +++++++------
kernel/dma/dummy.c | 39 +++
kernel/dma/mapping.c | 223 +++++++++----
kernel/dma/remap.c | 256 +++++++++++++++
kernel/dma/swiotlb.c | 253 +--------------
kernel/dma/virt.c | 2 +-
lib/Kconfig | 2 +-
lib/scatterlist.c | 2 +-
112 files changed, 1408 insertions(+), 2340 deletions(-)
delete mode 100644 Documentation/features/io/sg-chain/arch-support.txt
delete mode 100644 arch/riscv/include/asm/dma-mapping.h
delete mode 100644 arch/sparc/include/asm/pci_32.h
delete mode 100644 arch/sparc/include/asm/pci_64.h
create mode 100644 kernel/dma/dummy.c
create mode 100644 kernel/dma/remap.c
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