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Andrew Cooper f7851ed697 x86/cpu/amd: Enumerate BTC_NO 
commit 26aae8ccbc1972233afd08fb3f368947c0314265 upstream.

BTC_NO indicates that hardware is not susceptible to Branch Type Confusion.

Zen3 CPUs don't suffer BTC.

Hypervisors are expected to synthesise BTC_NO when it is appropriate
given the migration pool, to prevent kernels using heuristics.

  [ bp: Massage. ]

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
[cascardo: no X86_FEATURE_BRS]
[cascardo: no X86_FEATURE_CPPC]
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-25 11:26:49 +02:00
arch x86/cpu/amd: Enumerate BTC_NO 2022-07-25 11:26:49 +02:00
block block: Fix handling of offline queues in blk_mq_alloc_request_hctx() 2022-06-22 14:13:17 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: memneq - move into lib/ 2022-06-22 14:13:18 +02:00
Documentation x86/bugs: Add retbleed=ibpb 2022-07-25 11:26:44 +02:00
drivers intel_idle: Disable IBRS during long idle 2022-07-25 11:26:43 +02:00
fs ext4: fix race condition between ext4_write and ext4_convert_inline_data 2022-07-21 21:20:02 +02:00
include objtool: Re-add UNWIND_HINT_{SAVE_RESTORE} 2022-07-25 11:26:47 +02:00
init Kconfig: Add option for asm goto w/ tied outputs to workaround clang-13 bug 2022-06-09 10:21:25 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-09 10:21:17 +02:00
kernel signal handling: don't use BUG_ON() for debugging 2022-07-21 21:20:18 +02:00
lib ida: don't use BUG_ON() for debugging 2022-07-12 16:32:23 +02:00
LICENSES
mm mm: split huge PUD on wp_huge_pud fallback 2022-07-21 21:19:59 +02:00
net net: tipc: fix possible refcount leak in tipc_sk_create() 2022-07-21 21:20:14 +02:00
samples x86: Prepare inline-asm for straight-line-speculation 2022-07-25 11:26:29 +02:00
scripts objtool: Add entry UNRET validation 2022-07-25 11:26:45 +02:00
security ima: Fix potential memory leak in ima_init_crypto() 2022-07-21 21:20:11 +02:00
sound ASoC: madera: Fix event generation for rate controls 2022-07-21 21:20:16 +02:00
tools objtool: Re-add UNWIND_HINT_{SAVE_RESTORE} 2022-07-25 11:26:47 +02:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: Prevent module exit until all VMs are freed 2022-04-08 14:40:38 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: add Amir as xfs maintainer for 5.10.y 2022-07-02 16:39:22 +02:00
Makefile x86/retpoline: Use -mfunction-return 2022-07-25 11:26:36 +02:00
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.