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Kim Phillips fa24c1a49d x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled 
commit fd470a8beed88440b160d690344fbae05a0b9b1b 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: e7862eda309e ("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
..
ABI
net: sysfs: Fix /sys/class/net/<iface> path
2024-02-23 08:25:05 +01:00
accounting
psi: Fix uaf issue when psi trigger is destroyed while being polled
2022-02-05 12:35:36 +01:00
admin-guide
x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled
2024-04-13 12:51:32 +02:00
arm
ARM: 9012/1: move device tree mapping out of linear region
2021-05-19 10:08:32 +02:00
arm64
perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09
2023-09-23 11:00:03 +02:00
block
docs: block: null_blk: enhance document style
2019-09-11 16:04:22 -06:00
bpf
bpf/flow_dissector: document flags
2019-07-25 18:00:41 -07:00
cdrom
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
core-api
XArray: add xas_split
2021-06-10 13:37:14 +02:00
cpu-freq
Documentation: cpufreq: Update policy notifier documentation
2019-09-02 22:44:05 +02:00
crypto
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-09-18 12:11:14 -07:00
dev-tools
docs/scripts/gdb: add necessary make scripts_gdb step
2023-03-11 16:43:57 +01:00
devicetree
firmware: ti_sci: Replace HTTP links with HTTPS ones
2023-11-20 10:30:12 +01:00
doc-guide
docs: remove extra conf.py files
2019-07-17 06:57:52 -03:00
driver-api
spi: Update reference to struct spi_controller
2023-01-18 11:41:01 +01:00
EDID
docs: driver-api: add a series of orphaned documents
2019-07-15 11:03:02 -03:00
fault-injection
debugfs: fix error when writing negative value to atomic_t debugfs file
2023-01-18 11:40:56 +01:00
fb
fbdev: fix numbering of fbcon options
2020-02-24 08:36:42 +01:00
features
It's a somewhat calmer cycle for docs this time, as the churn of the mass
2019-09-17 16:22:26 -07:00
filesystems
rename(): fix the locking of subdirectories
2024-02-23 08:24:49 +01:00
firmware_class
…
firmware-guide
Documentation: ACPI: EINJ: Fix obsolete example
2022-08-25 11:18:21 +02:00
fpga
Documentation: fpga: dfl: add descriptions for virtualization and new interfaces.
2019-09-03 19:35:42 -07:00
gpu
Merge drm/drm-next into drm-intel-next-queued
2019-08-22 00:10:36 -07:00
hid
docs: add some documentation dirs to the driver-api book
2019-07-15 11:03:02 -03:00
hwmon
Revert "hwmon: Make chip parameter for with_info API mandatory"
2022-06-25 12:44:36 +02:00
i2c
docs: i2c: convert to ReST and add to driver-api bookset
2019-07-31 13:25:27 -06:00
ia64
docs: add SPDX tags to new index files
2019-07-15 11:03:03 -03:00
ide
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
iio
docs: add some documentation dirs to the driver-api book
2019-07-15 11:03:02 -03:00
infiniband
Documentation/infiniband: update name of some functions
2019-09-13 16:55:55 -03:00
input
Input: iforce - add support for Boeder Force Feedback Wheel
2022-09-20 12:27:59 +02:00
ioctl
Remove DECnet support from kernel
2023-06-21 15:44:10 +02:00
isdn
docs: isdn: convert to ReST and add to kAPI bookset
2019-07-31 13:30:25 -06:00
kbuild
kbuild: support LLVM=1 to switch the default tools to Clang/LLVM
2020-08-26 10:40:47 +02:00
kernel-hacking
docs: Add documentation for Symbol Namespaces
2019-09-10 10:30:49 +02:00
leds
leds: core: Add support for composing LED class device names
2019-07-25 20:07:52 +02:00
livepatch
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
locking
doc🔒 remove reference to clever use of read-write lock
2019-09-14 01:53:27 -06:00
m68k
docs: README.buddha: convert to ReST and add to m68k book
2019-07-31 13:30:10 -06:00
maintainer
docs: Fix typo on pull requests guide
2019-08-12 15:14:14 -06:00
media
media: rename VFL_TYPE_GRABBER to _VIDEO
2024-03-26 18:22:22 -04:00
mic
docs: driver-api: add remaining converted dirs to it
2019-07-15 11:03:03 -03:00
mips
Main MIPS changes for v5.4:
2019-09-22 09:30:30 -07:00
misc-devices
Docs: misc: xilinx_sdfec: Add documentation
2019-08-15 17:54:38 +02:00
netlabel
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
networking
xsk: Honor SO_BINDTODEVICE on bind
2023-07-27 08:37:23 +02:00
nios2
docs: nios2: add it to the main Documentation body
2019-07-31 13:31:51 -06:00
openrisc
docs: openrisc: convert to ReST and add to documentation body
2019-07-31 13:30:20 -06:00
parisc
docs: parisc: convert to ReST and add to documentation body
2019-07-31 13:30:15 -06:00
PCI
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-08-27 14:23:31 -07:00
pcmcia
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
power
PM: runtime: Add pm_runtime_get_if_active()
2023-08-30 16:27:12 +02:00
powerpc
docs: powerpc: Add missing documentation reference
2019-09-17 23:59:34 +10:00
process
docs: update mediator contact information in CoC doc
2022-11-25 17:42:20 +01:00
RCU
Merge branches 'consolidate.2019.08.01b', 'fixes.2019.08.12a', 'lists.2019.08.13a' and 'torture.2019.08.01b' into HEAD
2019-08-13 14:30:30 -07:00
riscv
It's a somewhat calmer cycle for docs this time, as the churn of the mass
2019-09-17 16:22:26 -07:00
s390
Documentation/s390: remove outdated debugging390 documentation
2019-08-21 12:41:43 +02:00
scheduler
sched/fair: Fix low cpu usage with high throttling by removing expiration of cpu-local slices
2019-08-08 09:09:30 +02:00
scsi
scsi: smartpqi: Update attribute name to driver_version
2020-01-17 19:48:27 +01:00
security
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
2019-09-27 19:37:27 -07:00
sh
docs: remove extra conf.py files
2019-07-17 06:57:52 -03:00
sound
ASoC: doc: Fix undefined SND_SOC_DAPM_NOPM argument
2024-02-23 08:25:00 +01:00
sparc
docs: add arch doc directories to the index
2019-07-15 11:03:01 -03:00
sphinx
docs: Fix the docs build with Sphinx 6.0
2023-01-18 11:42:01 +01:00
sphinx-static
…
spi
spi: docs: convert to ReST and add it to the kABI bookset
2019-07-31 14:13:13 -06:00
target
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
timers
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
trace
tracing/histogram: Update document for KEYS_MAX size
2022-11-10 17:57:55 +01:00
translations
media: rename VFL_TYPE_GRABBER to _VIDEO
2024-03-26 18:22:22 -04:00
usb
USB: rio500: Remove Rio 500 kernel driver
2019-10-04 10:53:36 +02:00
userspace-api
Documentation: seccomp: Fix user notification documentation
2021-06-03 08:59:03 +02:00
virt
KVM: s390: disable migration mode when dirty tracking is disabled
2023-03-11 16:44:01 +01:00
virtual
cpuidle: add haltpoll governor
2019-07-30 17:27:37 +02:00
vm
arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
2022-05-15 19:54:46 +02:00
w1
docs: w1: convert to ReST and add to the kAPI group of docs
2019-07-31 14:16:17 -06:00
watchdog
linux-watchdog 5.4-rc1 tag
2019-09-27 11:17:38 -07:00
x86
x86/CPU/AMD: Save AMD NodeId as cpu_die_id
2020-12-30 11:51:47 +01:00
xtensa
xtensa: fix TLBTEMP area placement
2020-11-24 13:29:22 +01:00
.gitignore
…
asm-annotations.rst
linkage: Introduce new macros for assembler symbols
2020-11-10 12:37:24 +01:00
atomic_bitops.txt
locking/atomic: Make test_and_*_bit() ordered on failure
2022-08-25 11:18:31 +02:00
atomic_t.txt
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 16:12:03 -07:00
bus-virt-phys-mapping.txt
…
Changes
…
CodingStyle
…
conf.py
docs/conf.py: Cope with removal of language=None in Sphinx 5.0.0
2022-06-14 18:11:49 +02:00
COPYING-logo
docs: logo.txt: rename it to COPYING-logo
2019-07-15 09:20:27 -03:00
crc32.txt
…
debugging-modules.txt
…
debugging-via-ohci1394.txt
…
digsig.txt
…
DMA-API-HOWTO.txt
docs: DMA-API-HOWTO.txt: fix an unmarked code block
2019-07-15 09:20:24 -03:00
DMA-API.txt
dma-mapping: remove dma_release_declared_memory
2019-09-04 11:13:19 +02:00
DMA-attributes.txt
Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""
2022-05-25 09:14:38 +02:00
DMA-ISA-LPC.txt
…
docutils.conf
doc-rst: Add missing newline at end of file
2019-06-20 14:16:56 -06:00
dontdiff
kbuild: create *.mod with full directory path and remove MODVERDIR
2019-07-18 02:19:31 +09:00
futex-requeue-pi.txt
…
hwspinlock.txt
hwspinlock: add the 'in_atomic' API
2019-06-29 21:08:14 -07:00
index.rst
linkage: Introduce new macros for assembler symbols
2020-11-10 12:37:24 +01:00
io_ordering.txt
…
io-mapping.txt
…
IPMI.txt
…
IRQ-affinity.txt
…
IRQ-domain.txt
…
IRQ.txt
…
irqflags-tracing.txt
…
Kconfig
docs: Kbuild/Makefile: allow check for missing docs at build time
2019-06-07 11:33:16 -06:00
kobject.txt
…
kprobes.txt
Merge branch 'parisc-5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
2019-05-07 19:34:17 -07:00
kref.txt
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logo.gif
…
lzo.txt
lib/lzo: fix ambiguous encoding bug in lzo-rle
2020-06-17 16:40:28 +02:00
mailbox.txt
…
Makefile
docs: Kbuild/Makefile: allow check for missing docs at build time
2019-06-07 11:33:16 -06:00
memory-barriers.txt
docs: fix broken doc references due to renames
2019-07-17 06:57:51 -03:00
nommu-mmap.txt
…
padata.txt
padata: allocate workqueue internally
2019-09-13 21:15:39 +10:00
percpu-rw-semaphore.txt
…
pi-futex.txt
docs: locking: convert docs to ReST and rename to *.rst
2019-07-15 08:53:27 -03:00
preempt-locking.txt
x86/fpu: Remove fpu__restore()
2019-04-09 19:27:42 +02:00
rbtree.txt
docs: rbtree.txt: fix Sphinx build warnings
2019-07-15 09:20:24 -03:00
remoteproc.txt
remoteproc: add vendor resources handling
2019-06-29 12:02:17 -07:00
robust-futex-ABI.txt
…
robust-futexes.txt
futex: Update comments and docs about return values of arch futex code
2019-04-26 13:57:55 +01:00
rpmsg.txt
…
speculation.txt
docs: speculation.txt: mark example blocks as such
2019-04-11 12:37:03 -06:00
static-keys.txt
…
SubmittingPatches
…
tee.txt
Documentation: tee: Grammar s/the its/its/
2019-06-07 11:23:38 -06:00
this_cpu_ops.txt
…
unaligned-memory-access.txt
docs: unaligned-memory-access.txt: use a lowercase title
2019-04-11 12:37:03 -06:00
xz.txt
…