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Jérôme Glisse 2aee09d8c1 mm/hmm: change hmm_vma_fault() to allow write fault on page basis
This changes hmm_vma_fault() to not take a global write fault flag for a
range but instead rely on caller to populate HMM pfns array with proper
fault flag ie HMM_PFN_VALID if driver want read fault for that address or
HMM_PFN_VALID and HMM_PFN_WRITE for write.

Moreover by setting HMM_PFN_DEVICE_PRIVATE the device driver can ask for
device private memory to be migrated back to system memory through page
fault.

This is more flexible API and it better reflects how device handles and
reports fault.

Link: http://lkml.kernel.org/r/20180323005527.758-15-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Cc: Evgeny Baskakov <ebaskakov@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Mark Hairgrove <mhairgrove@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11 10:28:31 -07:00
arch c6x changes 4.17 2018-04-10 11:50:14 -07:00
block for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
certs
crypto MIPS changes for 4.17 2018-04-10 11:39:22 -07:00
Documentation mm/hmm: documentation editorial update to HMM documentation 2018-04-11 10:28:30 -07:00
drivers MIPS changes for 4.17 2018-04-10 11:39:22 -07:00
firmware
fs dcache: account external names as indirectly reclaimable memory 2018-04-11 10:28:29 -07:00
include mm/hmm: change hmm_vma_fault() to allow write fault on page basis 2018-04-11 10:28:31 -07:00
init New features: 2018-04-10 11:27:30 -07:00
ipc Merge branch 'userns-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-04-03 19:15:32 -07:00
kernel New features: 2018-04-10 11:27:30 -07:00
lib New features: 2018-04-10 11:27:30 -07:00
LICENSES
mm mm/hmm: change hmm_vma_fault() to allow write fault on page basis 2018-04-11 10:28:31 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-04-09 17:04:10 -07:00
samples VFIO updates for v4.17-rc1 2018-04-06 19:44:27 -07:00
scripts Leaking-addresses patches for 4.17-rc1 2018-04-07 11:56:33 -07:00
security New features: 2018-04-10 11:27:30 -07:00
sound sound fixes for 4.17-rc1 2018-04-10 10:16:04 -07:00
tools New features: 2018-04-10 11:27:30 -07:00
usr
virt KVM/ARM updates for v4.17 2018-03-28 16:09:09 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap Merge candidates for 4.17 merge window 2018-04-06 17:35:43 -07:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS mm/hmm: documentation editorial update to HMM documentation 2018-04-11 10:28:30 -07:00
Makefile Kconfig updates for v4.17 2018-04-03 16:28:01 -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.