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Josh Poimboeuf 469d9b1570 x86/bugs: Do IBPB fallback check only once 
commit 0fe4aeea9c01baabecc8c3afc7889c809d939bc2 upstream.

When booting with retbleed=auto, if the kernel wasn't built with
CONFIG_CC_HAS_RETURN_THUNK, the mitigation falls back to IBPB.  Make
sure a warning is printed in that case.  The IBPB fallback check is done
twice, but it really only needs to be done once.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-23 12:54:05 +02:00
arch
x86/bugs: Do IBPB fallback check only once
2022-07-23 12:54:05 +02:00
block
block: fix rq-qos breakage from skipping rq_qos_done_bio()
2022-07-12 16:34:57 +02:00
certs
certs/blacklist_hashes.c: fix const confusion in certs blacklist
2022-06-22 14:22:01 +02:00
crypto
crypto: memneq - move into lib/
2022-06-22 14:22:03 +02:00
Documentation
x86/bugs: Add retbleed=ibpb
2022-07-23 12:54:05 +02:00
drivers
intel_idle: Disable IBRS during long idle
2022-07-23 12:54:04 +02:00
fs
ksmbd: use SOCK_NONBLOCK type for kernel_accept()
2022-07-21 21:24:32 +02:00
include
x86/bugs: Report AMD retbleed vulnerability
2022-07-23 12:54:02 +02:00
init
Kconfig: Add option for asm goto w/ tied outputs to workaround clang-13 bug
2022-06-09 10:23:26 +02:00
ipc
ipc/mqueue: use get_tree_nodev() in mqueue_get_tree()
2022-06-09 10:23:10 +02:00
kernel
signal handling: don't use BUG_ON() for debugging
2022-07-21 21:24:42 +02:00
lib
ida: don't use BUG_ON() for debugging
2022-07-12 16:35:18 +02:00
LICENSES
LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes"
2021-07-15 06:31:24 -06:00
mm
mm: split huge PUD on wp_huge_pud fallback
2022-07-21 21:24:11 +02:00
net
net: tipc: fix possible refcount leak in tipc_sk_create()
2022-07-21 21:24:35 +02:00
samples
samples/landlock: Format with clang-format
2022-06-09 10:23:23 +02:00
scripts
stddef: Introduce DECLARE_FLEX_ARRAY() helper
2022-07-12 16:35:03 +02:00
security
ima: Fix potential memory leak in ima_init_crypto()
2022-07-21 21:24:29 +02:00
sound
ALSA: usb-audio: Add quirk for Fiero SC-01 (fw v1.0.0)
2022-07-21 21:24:41 +02:00
tools
objtool: Update Retpoline validation
2022-07-23 12:54:04 +02:00
usr
usr/include/Makefile: add linux/nfc.h to the compile-test coverage
2022-02-01 17:27:15 +01:00
virt
KVM: Initialize debugfs_dentry when a VM is created to avoid NULL deref
2022-07-12 16:35:05 +02:00
.clang-format
clang-format: Update with the latest for_each macro list
2021-05-12 23:32:39 +02:00
.cocciconfig
…
.get_maintainer.ignore
Opt out of scripts/get_maintainer.pl
2019-05-16 10:53:40 -07:00
.gitattributes
.gitattributes: use 'dts' diff driver for dts files
2019-12-04 19:44:11 -08:00
.gitignore
.gitignore: ignore only top-level modules.builtin
2021-05-02 00:43:35 +09:00
.mailmap
mailmap: add Andrej Shadura
2021-10-18 20:22:03 -10:00
COPYING
COPYING: state that all contributions really are covered by this file
2020-02-10 13:32:20 -08:00
CREDITS
MAINTAINERS: Move Daniel Drake to credits
2021-09-21 08:34:58 +03:00
Kbuild
kbuild: rename hostprogs-y/always to hostprogs/always-y
2020-02-04 01:53:07 +09:00
Kconfig
kbuild: ensure full rebuild when the compiler is updated
2020-05-12 13:28:33 +09:00
MAINTAINERS
Input: goodix - add a goodix.h header file
2022-07-12 16:34:51 +02:00
Makefile
x86/retpoline: Use -mfunction-return
2022-07-23 12:53:58 +02:00
README
Drop all 00-INDEX files from Documentation/
2018-09-09 15:08:58 -06:00

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.

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.
Description
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