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Christoph Hellwig 0f665b9e2a xtensa: use the generic uncached segment support
Switch xtensa over to use the generic uncached support, and thus the
generic implementations of dma_alloc_* and dma_alloc_*, which also
gains support for mmaping DMA memory.  The non-working nommu DMA
support has been disabled, but could be re-enabled easily if platforms
that actually have an uncached segment show up.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
2019-11-11 10:52:18 +01:00
arch xtensa: use the generic uncached segment support 2019-11-11 10:52:18 +01:00
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drivers usb: core: Remove redundant vmap checks 2019-10-31 06:40:43 -07:00
fs Fix remounting (broken in -rc1). 2019-10-30 14:05:40 +01:00
include dma-direct: provide mmap and get_sgtable method overrides 2019-11-11 10:52:15 +01:00
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kernel dma-mapping: merge the generic remapping helpers into dma-direct 2019-11-11 10:52:18 +01:00
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tools Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-10-27 06:59:34 -04:00
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.mailmap A few MIPS fixes: 2019-10-26 19:43:12 -04:00
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MAINTAINERS A few MIPS fixes: 2019-10-26 19:43:12 -04:00
Makefile Linux 5.4-rc5 2019-10-27 13:19:19 -04:00
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.

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.