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msm-4.14/Documentation
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Andy Lutomirski 4506bca2a8 x86/speculation/mds: Improve CPU buffer clear documentation 
commit 9d8d0294e78a164d407133dea05caf4b84247d6a upstream.

On x86_64, all returns to usermode go through
prepare_exit_to_usermode(), with the sole exception of do_nmi().
This even includes machine checks -- this was added several years
ago to support MCE recovery.  Update the documentation.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jon Masters <jcm@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Fixes: 04dcbdb80578 ("x86/speculation/mds: Clear CPU buffers on exit to user")
Link: http://lkml.kernel.org/r/999fa9e126ba6a48e9d214d2f18dbde5c62ac55c.1557865329.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 18:50:13 +02:00
..
ABI
Documentation: Add MDS vulnerability documentation
2019-05-14 19:18:45 +02:00
accounting
…
acpi
This is the bulk of GPIO changes for the v4.13 series:
2017-07-07 12:40:27 -07:00
admin-guide
Documentation: Correct the possible MDS sysfs values
2019-05-14 19:18:47 +02:00
aoe
…
arm
ARM: 8833/1: Ensure that NEON code always compiles with Clang
2019-04-05 22:31:34 +02:00
arm64
arm64: Add work around for Arm Cortex-A55 Erratum 1024718
2018-05-16 10:10:25 +02:00
auxdisplay
…
backlight
…
blackfin
…
block
doc, block, bfq: better describe how to properly configure bfq
2017-08-31 13:55:26 -06:00
blockdev
SCSI misc on 20170907
2017-09-07 21:11:05 -07:00
bus-devices
…
cdrom
…
cgroup-v1
mm, vmpressure: pass-through notification support
2017-07-10 16:32:31 -07:00
cma
…
connector
…
console
…
core-api
doc: Fix RCU's docbook options
2017-10-19 22:26:11 -04:00
cpu-freq
cpufreq: docs: Drop intel-pstate.txt from index.txt
2017-09-28 02:08:43 +02:00
cpuidle
…
cris
…
crypto
KEYS: Add documentation for asymmetric keyring restrictions
2017-07-14 11:01:38 +10:00
dev-tools
kmemcheck: rip it out
2018-02-22 15:42:24 +01:00
device-mapper
dm thin: fix documentation relative to low water mark threshold
2018-04-26 11:02:07 +02:00
devicetree
dt-bindings: eeprom: at24: add "atmel,24c2048" compatible string
2019-02-20 10:20:44 +01:00
dmaengine
Merge branch 'topic/dmatest' into for-linus
2017-09-06 21:55:10 +05:30
doc-guide
sphinx.rst: Allow Sphinx version 1.6 at the docs
2017-08-26 15:50:27 -06:00
driver-api
USB: core: Fix bug caused by duplicate interface PM usage counter
2019-05-08 07:20:46 +02:00
driver-model
driver core: remove DRIVER_ATTR
2017-09-19 09:20:33 +02:00
early-userspace
…
EDID
…
extcon
…
fault-injection
fault-inject: add /proc/<pid>/fail-nth
2017-07-14 15:05:13 -07:00
fb
fbcon: remove restriction on margin color
2017-09-04 16:00:49 +02:00
features
docs/features: parisc implements tracehook
2017-08-07 14:18:40 -06:00
filesystems
mm, proc: be more verbose about unstable VMA flags in /proc/<pid>/smaps
2019-01-26 09:37:07 +01:00
firmware_class
…
fmc
…
fpga
…
frv
…
gpio
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2017-09-07 13:39:21 -07:00
gpu
Merge tag 'drm-intel-next-2017-08-18' of git://anongit.freedesktop.org/git/drm-intel into drm-next
2017-08-22 10:03:07 +10:00
hid
…
hwmon
hwmon: (ina2xx) fix sysfs shunt resistor read access
2018-10-03 17:00:58 -07:00
i2c
i2c: i801: Add support for Intel Cedar Fork
2017-10-05 14:44:56 +02:00
ia64
…
ide
…
iio
iio: adc: New driver for Cirrus Logic EP93xx ADC
2017-07-25 19:56:23 +01:00
infiniband
Documentation: Hardware tag matching
2017-08-29 08:30:21 -04:00
input
Documentation:input: fix typo
2017-08-30 15:18:24 -06:00
ioctl
scsi: cxlflash: Introduce host ioctl support
2017-06-26 15:01:11 -04:00
isdn
…
kbuild
kbuild: delete INSTALL_FW_PATH from kbuild documentation
2018-07-17 11:39:30 +02:00
kdump
kexec/kdump: minor Documentation updates for arm64 and Image
2017-07-12 16:26:00 -07:00
kernel-hacking
There has been a fair amount of activity in the docs tree this time
2017-07-03 21:13:25 -07:00
laptops
platform/x86: thinkpad_acpi: Fix warning about deprecated hwmon_device_register
2017-08-18 15:57:24 -07:00
leds
…
lightnvm
…
livepatch
…
locking
Merge branch 'linus' into locking/core, to fix up conflicts
2017-09-04 11:01:18 +02:00
m68k
…
md
…
media
media: media colorspaces*.rst: rename AdobeRGB to opRGB
2018-11-13 11:15:12 -08:00
memory-devices
…
metag
…
mic
…
mips
…
misc-devices
…
mmc
…
mn10300
…
mtd
…
namespaces
…
netlabel
…
networking
ipv4: set the tcp_min_rtt_wlen range from 0 to one day
2019-05-02 09:40:34 +02:00
nfc
…
nios2
…
nvdimm
…
nvmem
NVMEM documentation fix: A minor typo
2017-08-24 13:31:58 -06:00
parisc
…
PCI
docs: update old references for DocBook from the documentation
2017-05-16 08:44:19 -03:00
pcmcia
…
perf
…
phy
…
platform
…
power
Merge branch 'pm-sleep'
2017-09-04 00:06:02 +02:00
powerpc
powerpc updates for 4.13
2017-07-07 13:55:45 -07:00
pps
drivers/pps: aesthetic tweaks to PPS-related content
2017-09-08 18:26:51 -07:00
process
kbuild: verify that $DEPMOD is installed
2018-08-17 21:01:10 +02:00
pti
…
ptp
…
rapidio
…
RCU
doc: Set down RCU's scheduling-clock-interrupt needs
2017-08-17 07:31:14 -07:00
s390
…
scheduler
sched/deadline: Add documentation about GRUB reclaiming
2017-06-08 10:31:56 +02:00
scsi
…
security
docs: ReSTify table of contents in core.rst
2017-08-30 15:27:58 -06:00
serial
tty: n_gsm: do not send/receive in ldisc close path
2017-06-03 18:48:52 +09:00
sh
docs-rst: convert sh book to ReST
2017-05-16 08:44:18 -03:00
sound
sound updates for 4.13-rc1
2017-07-06 10:56:51 -07:00
sparc
…
sphinx
Documentation/sphinx: Fix Directive import error
2018-03-15 10:54:32 +01:00
sphinx-static
docs RTD theme: code-block with line nos - lines and line numbers don't line up.
2017-07-17 13:48:45 -06:00
spi
spi: Document SPI slave controller support
2017-05-26 13:11:00 +01:00
sysctl
namei: allow restricted O_CREAT of FIFOs and regular files
2018-12-01 09:42:59 +01:00
target
…
thermal
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
2017-05-12 11:58:45 -07:00
timers
rcu: Eliminate NOCBs CPU-state Kconfig options
2017-06-08 18:52:43 -07:00
trace
stm class: Document the stm_ftrace
2017-08-25 17:58:34 +03:00
translations
kokr/memory-barriers.txt: Apply atomic_t.txt change
2017-09-08 10:10:53 -06:00
usb
usb: gadget: add f_uac1 variant based on a new u_audio api
2017-06-19 09:22:47 +03:00
userspace-api
x86/speculation: Add prctl() control for indirect branch speculation
2018-12-05 19:41:22 +01:00
virtual
KVM: Reject device ioctls from processes other than the VM's creator
2019-04-03 06:25:20 +02:00
vm
hmm: heterogeneous memory management documentation
2017-09-08 18:26:45 -07:00
w1
…
watchdog
watchdog: Revert "iTCO_wdt: all versions count down twice"
2017-09-09 17:41:24 +02:00
wimax
…
x86
x86/speculation/mds: Improve CPU buffer clear documentation
2019-05-21 18:50:13 +02:00
xtensa
of: update ePAPR references to point to Devicetree Specification
2017-06-22 11:22:06 -05:00
.gitignore
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00-INDEX
linux-kselftest-4.13-rc1-update
2017-07-07 14:04:47 -07:00
atomic_bitops.txt
Documentation/locking/atomic: Add documents for new atomic_t APIs
2017-08-10 12:29:00 +02:00
atomic_t.txt
Documentation/locking/atomic: Finish the document...
2017-08-25 11:06:33 +02:00
bcache.txt
bcache.txt: standardize document format
2017-07-14 13:51:27 -06:00
bt8xxgpio.txt
bt8xxgpio.txt: standardize document format
2017-07-14 13:51:27 -06:00
btmrvl.txt
btmrvl.txt: standardize document format
2017-07-14 13:51:27 -06:00
bus-virt-phys-mapping.txt
bus-virt-phys-mapping.txt: standardize document format
2017-07-14 13:51:28 -06:00
cachetlb.txt
cachetlb.txt: standardize document format
2017-07-14 13:51:28 -06:00
cgroup-v2.txt
cgroup: add cgroup.stat interface with basic hierarchy stats
2017-08-02 12:05:20 -07:00
Changes
…
circular-buffers.txt
circular-buffers.txt: standardize document format
2017-07-14 13:51:29 -06:00
clk.txt
clk.txt: standardize document format
2017-07-14 13:51:29 -06:00
CodingStyle
…
conf.py
docs-rst: don't require adjustbox anymore
2017-09-08 10:02:55 -06:00
cpu-load.txt
cpu-load: standardize document format
2017-07-14 13:51:30 -06:00
cputopology.txt
cputopology.txt: standardize document format
2017-07-14 13:51:30 -06:00
crc32.txt
crc32.txt: standardize document format
2017-07-14 13:51:30 -06:00
dcdbas.txt
dcdbas.txt: standardize document format
2017-07-14 13:51:31 -06:00
debugging-modules.txt
…
debugging-via-ohci1394.txt
debugging-via-ohci1394.txt: standardize document format
2017-07-14 13:51:34 -06:00
dell_rbu.txt
dell_rbu.txt: standardize document format
2017-07-14 13:58:12 -06:00
digsig.txt
digsig.txt: standardize document format
2017-07-14 13:51:31 -06:00
DMA-API-HOWTO.txt
DMA-API-HOWTO.txt: standardize document format
2017-07-14 13:51:32 -06:00
DMA-API.txt
dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags
2017-09-01 11:59:17 +02:00
DMA-attributes.txt
DMA-attributes.txt: standardize document format
2017-07-14 13:51:33 -06:00
DMA-ISA-LPC.txt
DMA-ISA-LPC.txt: standardize document format
2017-07-14 13:51:33 -06:00
docutils.conf
…
dontdiff
Remove gperf usage from toolchain
2017-08-19 11:02:53 -07:00
efi-stub.txt
efi-stub.txt: standardize document format
2017-07-14 13:51:34 -06:00
eisa.txt
eisa.txt: standardize document format
2017-07-14 13:51:34 -06:00
errseq.rst
Documentation: add some docs for errseq_t
2017-07-29 09:01:02 -04:00
flexible-arrays.txt
flexible-arrays.txt: standardize document format
2017-07-14 13:51:35 -06:00
futex-requeue-pi.txt
futex-requeue-pi.txt: standardize document format
2017-07-14 13:51:35 -06:00
gcc-plugins.txt
gcc-plugins.txt: standardize document format
2017-07-14 13:51:36 -06:00
highuid.txt
highuid.txt: standardize document format
2017-07-14 13:51:36 -06:00
hw_random.txt
hw_random.txt: standardize document format
2017-07-14 13:51:37 -06:00
hwspinlock.txt
hwspinlock.txt: standardize document format
2017-07-14 13:51:37 -06:00
index.rst
x86/speculation/mds: Add mds_clear_cpu_buffers()
2019-05-14 19:18:43 +02:00
intel_txt.txt
intel_txt.txt: standardize document format
2017-07-14 13:51:38 -06:00
Intel-IOMMU.txt
Intel-IOMMU.txt: standardize document format
2017-07-14 13:51:38 -06:00
io_ordering.txt
io_ordering.txt: standardize document format
2017-07-14 13:51:39 -06:00
io-mapping.txt
io-mapping.txt: standardize document format
2017-07-14 13:51:38 -06:00
iostats.txt
iostats.txt: update it to cover recent Kernels
2017-07-14 13:51:40 -06:00
IPMI.txt
IPMI.txt: standardize document format
2017-07-14 13:51:40 -06:00
IRQ-affinity.txt
IRQ-affinity.txt: standardize document format
2017-07-14 13:51:41 -06:00
IRQ-domain.txt
IRQ-domain.txt: standardize document format
2017-07-14 13:51:41 -06:00
IRQ.txt
IRQ.txt: add a markup for its title
2017-07-14 13:51:42 -06:00
irqflags-tracing.txt
irqflags-tracing.txt: standardize document format
2017-07-14 13:51:42 -06:00
isa.txt
isa.txt: standardize document format
2017-07-14 13:51:43 -06:00
isapnp.txt
isapnp.txt: promote title level
2017-07-14 13:51:43 -06:00
kernel-doc-nano-HOWTO.txt
docs: update old references for DocBook from the documentation
2017-05-16 08:44:19 -03:00
kernel-per-CPU-kthreads.txt
kernel-per-CPU-kthreads.txt: standardize document format
2017-07-14 13:51:43 -06:00
kobject.txt
kobject.txt: standardize document format
2017-07-14 13:51:44 -06:00
kprobes.txt
docs: kprobes.txt: Fix whitespacing
2017-07-14 13:58:14 -06:00
kref.txt
kref.txt: standardize document format
2017-07-14 13:51:45 -06:00
ldm.txt
ldm.txt: standardize document format
2017-07-14 13:51:45 -06:00
lockup-watchdogs.txt
lockup-watchdogs.txt: standardize document format
2017-07-14 13:51:46 -06:00
logo.gif
…
logo.txt
…
lsm.txt
docs-rst: convert lsm from DocBook to ReST
2017-05-16 08:44:19 -03:00
lzo.txt
lzo.txt: standardize document format
2017-07-14 13:51:46 -06:00
mailbox.txt
mailbox.txt: standardize document format
2017-07-14 13:51:47 -06:00
Makefile
doc: Makefile: if sphinx is not found, run a check script
2017-08-24 13:18:30 -06:00
memory-barriers.txt
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-09-04 11:52:29 -07:00
memory-hotplug.txt
memory-hotplug.txt: standardize document format
2017-07-14 13:57:53 -06:00
men-chameleon-bus.txt
men-chameleon-bus.txt: standardize document format
2017-07-14 13:57:54 -06:00
nommu-mmap.txt
nommu-mmap.txt: don't use all upper case on titles
2017-07-14 13:57:55 -06:00
ntb.txt
This series converts a number of top-level documents to the RST format
2017-07-15 12:58:58 -07:00
numastat.txt
numastat.txt: standardize document format
2017-07-14 13:57:56 -06:00
padata.txt
padata.txt: standardize document format
2017-07-14 13:57:56 -06:00
parport-lowlevel.txt
parport-lowlevel.txt: standardize document format
2017-07-14 13:57:57 -06:00
percpu-rw-semaphore.txt
percpu-rw-semaphore.txt: standardize document format
2017-07-14 13:57:58 -06:00
phy.txt
phy.txt: standardize document format
2017-07-14 13:57:58 -06:00
pi-futex.txt
pi-futex.txt: standardize document format
2017-07-14 13:57:59 -06:00
pnp.txt
pnp.txt: standardize document format
2017-07-14 13:57:59 -06:00
preempt-locking.txt
preempt-locking.txt: standardize document format
2017-07-14 13:58:00 -06:00
printk-formats.txt
lib/vsprintf: Remove atomic-unsafe support for %pCr
2018-07-03 11:24:48 +02:00
pwm.txt
pwm: Standardize document format
2017-07-06 08:23:30 +02:00
rbtree.txt
rbtree: cache leftmost node internally
2017-09-08 18:26:48 -07:00
remoteproc.txt
remoteproc.txt: standardize document format
2017-07-14 13:58:02 -06:00
rfkill.txt
rfkill.txt: standardize document format
2017-07-14 13:58:02 -06:00
robust-futex-ABI.txt
robust-futex-ABI.txt: standardize document format
2017-07-14 13:58:03 -06:00
robust-futexes.txt
robust-futexes.txt: standardize document format
2017-07-14 13:58:03 -06:00
rpmsg.txt
rpmsg.txt: standardize document format
2017-07-14 13:58:04 -06:00
rtc.txt
rtc: add generic nvmem support
2017-07-07 13:14:14 +02:00
SAK.txt
SAK.txt: standardize document format
2017-07-14 13:58:04 -06:00
sgi-ioc4.txt
sgi-ioc4.txt: standardize document format
2017-07-14 13:58:05 -06:00
siphash.txt
siphash.txt: standardize document format
2017-07-14 13:58:06 -06:00
SM501.txt
SM501.txt: standardize document format
2017-07-14 13:58:06 -06:00
smsc_ece1099.txt
smsc_ece1099.txt: standardize document format
2017-07-14 13:58:07 -06:00
speculation.txt
Documentation: Document array_index_nospec
2018-02-07 11:12:22 -08:00
static-keys.txt
jump_label: Provide hotplug context variants
2017-08-10 12:28:59 +02:00
SubmittingPatches
…
svga.txt
svga.txt: standardize document format
2017-07-14 13:58:08 -06:00
switchtec.txt
…
sync_file.txt
sync_file.txt: standardize document format
2017-05-24 13:01:27 -03:00
tee.txt
tee.txt: standardize document format
2017-07-14 13:58:14 -06:00
this_cpu_ops.txt
this_cpu_ops.txt: standardize document format
2017-07-14 13:58:08 -06:00
unaligned-memory-access.txt
unaligned-memory-access.txt: standardize document format
2017-07-14 13:58:09 -06:00
vfio-mediated-device.txt
vfio/mdev: Check globally for duplicate devices
2018-08-03 07:50:22 +02:00
vfio.txt
vfio.txt: standardize document format
2017-07-14 13:58:10 -06:00
video-output.txt
…
xillybus.txt
xillybus.txt: standardize document format
2017-07-14 13:58:11 -06:00
xz.txt
xz.txt: standardize document format
2017-07-14 13:58:11 -06:00
zorro.txt
zorro.txt: standardize document format
2017-07-14 13:58:12 -06:00