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Kim Phillips fa24c1a49d x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled commit `fd470a8bee` upstream. Unlike Intel's Enhanced IBRS feature, AMD's Automatic IBRS does not provide protection to processes running at CPL3/user mode, see section "Extended Feature Enable Register (EFER)" in the APM v2 at https://bugzilla.kernel.org/attachment.cgi?id=304652 Explicitly enable STIBP to protect against cross-thread CPL3 branch target injections on systems with Automatic IBRS enabled. Also update the relevant documentation. Fixes: `e7862eda30` ("x86/cpu: Support AMD Automatic IBRS") Reported-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Kim Phillips <kim.phillips@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230720194727.67022-1-kim.phillips@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-04-13 12:51:32 +02:00
Documentation	x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled	2024-04-13 12:51:32 +02:00
LICENSES	…
arch	x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled	2024-04-13 12:51:32 +02:00
block	block: sed-opal: handle empty atoms when parsing response	2024-03-26 18:22:12 -04:00
certs	certs/blacklist_hashes.c: fix const confusion in certs blacklist	2022-06-22 14:11:22 +02:00
crypto	crypto: api - Disallow identical driver names	2024-02-23 08:24:48 +01:00
drivers	scsi: qla2xxx: Fix command flush on cable pull	2024-04-13 12:51:32 +02:00
fs	exec: Fix NOMMU linux_binprm::exec in transfer_args_to_stack()	2024-04-13 12:51:31 +02:00
include	objtool: Add support for intra-function calls	2024-04-13 12:51:29 +02:00
init	rootfs: Fix support for rootfstype= when root= is given	2024-01-25 14:34:30 -08:00
ipc	ipc/sem: Fix dangling sem_array access in semtimedop race	2022-12-08 11:23:06 +01:00
kernel	bounds: support non-power-of-two CONFIG_NR_CPUS	2024-04-13 12:51:31 +02:00
lib	net: blackhole_dev: fix build warning for ethh set but not used	2024-03-26 18:22:15 -04:00
mm	mm/migrate: set swap entry values of THP tail pages properly.	2024-04-13 12:51:31 +02:00
net	wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes	2024-04-13 12:51:31 +02:00
samples	media: rename VFL_TYPE_GRABBER to _VIDEO	2024-03-26 18:22:22 -04:00
scripts	kbuild: Move -Wenum-{compare-conditional,enum-conversion} into W=1	2024-04-13 12:51:26 +02:00
security	smack: Handle SMACK64TRANSMUTE in smack_inode_setsecurity()	2024-04-13 12:51:22 +02:00
sound	ALSA: sh: aica: reorder cleanup operations to avoid UAF bugs	2024-04-13 12:51:32 +02:00
tools	objtool: Add support for intra-function calls	2024-04-13 12:51:29 +02:00
usr	initramfs: restore default compression behavior	2020-04-08 09:08:38 +02:00
virt	KVM: Always flush async #PF workqueue when vCPU is being destroyed	2024-04-13 12:51:22 +02:00
.clang-format	…
.cocciconfig	…
.get_maintainer.ignore	…
.gitattributes	…
.gitignore	…
.mailmap	…
COPYING	…
CREDITS	…
Kbuild	…
Kconfig	…
MAINTAINERS	iio: stx104: Move to addac subdirectory	2023-08-30 16:27:12 +02:00
Makefile	Linux 5.4.273	2024-03-26 18:23:12 -04:00
README	…

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.