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Paolo Bonzini 6abe2aaed9 KVM: vmx, svm: always run with EFER.NXE=1 when shadow paging is active 
commit 9167ab7993 upstream.

VMX already does so if the host has SMEP, in order to support the combination of
CR0.WP=1 and CR4.SMEP=1.  However, it is perfectly safe to always do so, and in
fact VMX also ends up running with EFER.NXE=1 on old processors that lack the
"load EFER" controls, because it may help avoiding a slow MSR write.

SVM does not have similar code, but it should since recent AMD processors do
support SMEP.  So this patch makes the code for the two vendors simpler and
more similar, while fixing an issue with CR0.WP=1 and CR4.SMEP=1 on AMD.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-12 19:19:07 +01:00
arch KVM: vmx, svm: always run with EFER.NXE=1 when shadow paging is active 2019-11-12 19:19:07 +01:00
block blk-mq: move cancel of requeue_work to the front of blk_exit_queue 2019-10-05 12:47:37 +02:00
certs Replace magic for trusting the secondary keyring with #define 2018-09-09 19:55:54 +02:00
crypto crypto: skcipher - Unmap pages after an external error 2019-10-11 18:18:32 +02:00
Documentation kvm: Convert kvm_lock to a mutex 2019-11-12 19:19:05 +01:00
drivers x86/bugs: Add ITLB_MULTIHIT bug infrastructure 2019-11-12 19:19:03 +01:00
firmware License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fs cgroup,writeback: don't switch wbs immediately on dead wbs if the memcg is dead 2019-11-12 19:18:47 +01:00
include kvm: Convert kvm_lock to a mutex 2019-11-12 19:19:05 +01:00
init init: initialize jump labels before command line option parsing 2019-05-16 19:42:23 +02:00
ipc ipc/mqueue.c: only perform resource calculation if user valid 2019-08-06 19:05:24 +02:00
kernel cpu/speculation: Uninline and export CPU mitigations helpers 2019-11-12 19:19:04 +01:00
lib lib/scatterlist: Introduce sgl_alloc() and sgl_free() 2019-11-12 19:18:30 +01:00
mm mm/filemap.c: don't initiate writeback if mapping has no dirty pages 2019-11-12 19:18:46 +01:00
net ipvs: move old_secure_tcp into struct netns_ipvs 2019-11-12 19:18:38 +01:00
samples samples, bpf: fix to change the buffer size for read() 2019-07-21 09:04:17 +02:00
scripts scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks 2019-11-06 12:42:55 +01:00
security ima: always return negative code for error 2019-10-11 18:18:37 +02:00
sound ASoC: davinci-mcasp: Fix an error handling path in 'davinci_mcasp_probe()' 2019-11-12 19:18:26 +01:00
tools perf tools: Fix time sorting 2019-11-12 19:18:03 +01:00
usr kbuild: clean compressed initramfs image 2019-10-07 18:55:14 +02:00
virt kvm: Convert kvm_lock to a mutex 2019-11-12 19:19:05 +01:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore kbuild: rpm-pkg: keep spec file until make mrproper 2018-02-13 10:19:46 +01:00
.mailmap .mailmap: Add Maciej W. Rozycki's Imagination e-mail address 2017-11-10 12:16:15 -08:00
COPYING
CREDITS MAINTAINERS: update TPM driver infrastructure changes 2017-11-09 17:58:40 -08:00
Kbuild License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
MAINTAINERS USB: rio500: Remove Rio 500 kernel driver 2019-10-17 13:43:20 -07:00
Makefile Linux 4.14.153 2019-11-10 11:25:43 +01:00
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.