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Russell King 383fb3ee80 ARM: spectre-v2: per-CPU vtables to work around big.Little systems
In big.Little systems, some CPUs require the Spectre workarounds in
paths such as the context switch, but other CPUs do not.  In order
to handle these differences, we need per-CPU vtables.

We are unable to use the kernel's per-CPU variables to support this
as per-CPU is not initialised at times when we need access to the
vtables, so we have to use an array indexed by logical CPU number.

We use an array-of-pointers to avoid having function pointers in
the kernel's read/write .data section.

Reviewed-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2018-11-12 10:51:01 +00:00
Documentation Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-30 18:47:28 -10:00
LICENSES LICENSES: Add MPL-1.1 license 2018-01-06 10:59:44 -07:00
arch ARM: spectre-v2: per-CPU vtables to work around big.Little systems 2018-11-12 10:51:01 +00:00
block for-linus-20180302 2018-03-02 09:35:36 -08:00
certs certs/blacklist_nohashes.c: fix const confusion in certs blacklist 2018-02-21 15:35:43 -08:00
crypto X.509: fix NULL dereference when restricting key with unsupported_sig 2018-02-22 14:38:34 +00:00
drivers Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-30 18:47:28 -10:00
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs ceph: only dirty ITER_IOVEC pages for direct read 2018-03-30 11:17:48 +02:00
include Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-30 18:47:28 -10:00
init jump_label: Disable jump labels in __exit code 2018-03-20 08:57:17 +01:00
ipc ipc/shm.c: add split function to shm_vm_ops 2018-03-28 13:42:05 -10:00
kernel perf/hwbp: Simplify the perf-hwbp code, fix documentation 2018-03-28 17:41:50 +02:00
lib Merge branch 'akpm' (patches from Andrew) 2018-03-22 18:48:43 -07:00
mm mm/kmemleak.c: wait for scan completion before disabling free 2018-03-28 13:42:05 -10:00
net Kbuild fixes for v4.16 (3rd) 2018-03-30 18:53:57 -10:00
samples - do not build samples when cross compiling (Michal Hocko) 2018-02-27 10:39:29 -08:00
scripts kbuild: rpm-pkg: Support GNU tar >= 1.29 2018-03-28 01:42:17 +09:00
security integrity/security: fix digsig.c build error with header file 2018-02-22 20:09:08 -08:00
sound ALSA: pcm: potential uninitialized return values 2018-03-27 15:20:19 +02:00
tools Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-03-31 07:26:48 -10:00
usr initramfs: fix initramfs rebuilds w/ compression after disabling 2017-11-03 07:39:19 -07:00
virt kvm/arm fixes for 4.16, take 2 2018-03-15 21:45:37 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore .gitignore: ignore ASN.1 auto generated files 2018-02-14 21:05:38 +01:00
.mailmap mailmap: Update email address for Gregory CLEMENT 2018-03-09 17:48:50 +01:00
COPYING
CREDITS MAINTAINERS: update TPM driver infrastructure changes 2017-11-09 17:58:40 -08:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
MAINTAINERS Merge branch 'akpm' (patches from Andrew) 2018-03-28 14:34:55 -10:00
Makefile Linux 4.16 2018-04-01 14:20:27 -07:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

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.