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Christoph Hellwig 782e6769c0 dma-mapping: provide a generic dma-noncoherent implementation
Add a new dma_map_ops implementation that uses dma-direct for the
address mapping of streaming mappings, and which requires arch-specific
implemenations of coherent allocate/free.

Architectures have to provide flushing helpers to ownership trasnfers
to the device and/or CPU, and can provide optional implementations of
the coherent mmap functionality, and the cache_flush routines for
non-coherent long term allocations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Alexey Brodkin <abrodkin@synopsys.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
2018-05-19 08:46:12 +02:00
arch riscv: add swiotlb support 2018-05-19 08:46:26 +02:00
block Revert "blk-mq: remove code for dealing with remapping queue" 2018-04-25 09:49:22 -06:00
certs
crypto crypto: drbg - set freed buffers to NULL 2018-04-21 00:57:00 +08:00
Documentation dma-debug: remove CONFIG_HAVE_DMA_API_DEBUG 2018-05-08 13:03:43 +02:00
drivers PCI: remove CONFIG_PCI_BUS_ADDR_T_64BIT 2018-05-09 06:57:18 +02:00
firmware
fs Changes since last update: 2018-05-01 09:11:45 -07:00
include dma-mapping: provide a generic dma-noncoherent implementation 2018-05-19 08:46:12 +02:00
init
ipc
kernel Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-04-29 09:03:25 -07:00
lib dma-mapping: provide a generic dma-noncoherent implementation 2018-05-19 08:46:12 +02:00
LICENSES
mm arch: remove the ARCH_PHYS_ADDR_T_64BIT config symbol 2018-05-09 06:56:33 +02:00
net net: remove the PCI_DMA_BUS_IS_PHYS check in illegal_highdma 2018-05-07 07:15:41 +02:00
samples Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching 2018-04-20 08:51:55 -07:00
scripts
security Merge branch 'userns-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-04-24 17:58:51 -07:00
sound ALSA: dice: fix error path to destroy initialized stream data 2018-04-26 15:24:54 +02:00
tools PCI: remove PCI_DMA_BUS_IS_PHYS 2018-05-07 07:15:41 +02:00
usr
virt KVM fixes for v4.17-rc3 2018-04-27 16:13:31 -07:00
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MAINTAINERS dma-mapping: provide a generic dma-noncoherent implementation 2018-05-19 08:46:12 +02:00
Makefile Linux v4.17-rc3 2018-04-29 14:17:42 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.