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Filename Latest commit message Latest commit date
Aneesh Kumar K.V 22259a6e80 powerpc/mm/cxl: Add barrier when setting mm cpumask
We need to add memory barrier so that the page table walk doesn't happen
before the cpumask is set and made visible to the other cpus. We need
to use a sync here instead of lwsync because lwsync is not sufficient for
store/load ordering.

We also need to add an if (mm) check so that we do the right thing when called
with a kernel context. For kernel context, we have mm = NULL. W.r.t kernel
address we can skip setting the mm cpumask.

Fixes: 0f4bc0932e ("powerpc/mm/cxl: Add the fault handling cpu to mm cpumask")
Cc: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-08-31 14:26:39 +10:00
arch powerpc/powernv/vas: Define copy/paste interfaces 2017-08-31 14:26:38 +10:00
block
certs
crypto
Documentation powerpc/powernv/vas: Define vas_init() and vas_exit() 2017-08-31 14:26:26 +10:00
drivers powerpc/mm/cxl: Add barrier when setting mm cpumask 2017-08-31 14:26:39 +10:00
firmware
fs NFS client bugfixes for 4.13 2017-07-21 16:26:01 -07:00
include mm/hugetlb: Allow arch to override and call the weak function 2017-08-15 23:20:30 +10:00
init
ipc
kernel Three minor updates 2017-07-21 13:59:51 -07:00
lib Add wait_for_random_bytes() and get_random_*_wait() functions so that 2017-07-15 12:44:02 -07:00
mm mm/hugetlb: Allow arch to override and call the weak function 2017-08-15 23:20:30 +10:00
net NFS client bugfixes for 4.13 2017-07-21 16:26:01 -07:00
samples
scripts Properly alphabetize MAINTAINERS file 2017-07-23 16:06:21 -07:00
security Now that IPC and other changes have landed, enable manual markings for 2017-07-19 08:55:18 -07:00
sound
tools selftests/powerpc: Improve tm-resched-dscr 2017-08-17 21:56:36 +10:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS powerpc/powernv/vas: Define copy/paste interfaces 2017-08-31 14:26:38 +10:00
Makefile Linux 4.13-rc2 2017-07-23 16:15:17 -07:00
README

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

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

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.