Kristina Martsenko
e6b8f5ade3
arm64: documentation: document tagged pointer stack constraints
...
commit f0e421b1bf7af97f026e1bb8bfe4c5a7a8c08f42 upstream.
Some kernel features don't currently work if a task puts a non-zero
address tag in its stack pointer, frame pointer, or frame record entries
(FP, LR).
For example, with a tagged stack pointer, the kernel can't deliver
signals to the process, and the task is killed instead. As another
example, with a tagged frame pointer or frame records, perf fails to
generate call graphs or resolve symbols.
For now, just document these limitations, instead of finding and fixing
everything that doesn't work, as it's not known if anyone needs to use
tags in these places anyway.
In addition, as requested by Dave Martin, generalize the limitations
into a general kernel address tag policy, and refactor
tagged-pointers.txt to include it.
Fixes: d50240a5f6 ("arm64: mm: permit use of tagged pointers at EL0")
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-25 15:44:45 +02:00
..
80211
docs-rst: sphinxify 802.11 documentation
2016-10-11 16:19:17 -06:00
ABI
platform-drivers-x86 for 4.9-3
2016-11-11 16:48:49 -08:00
accounting
tools: move accounting tool from Documentation
2016-09-23 13:07:15 -06:00
acpi
Merge branches 'acpi-button', 'acpi-battery' and 'acpi-doc'
2016-10-02 01:40:20 +02:00
aoe
arm
linux-kselftest-4.9-rc1-update
2016-10-14 15:17:12 -07:00
arm64
arm64: documentation: document tagged pointer stack constraints
2017-05-25 15:44:45 +02:00
auxdisplay
samples: move auxdisplay example code from Documentation
2016-09-23 11:52:32 -06:00
backlight
blackfin
samples: move blackfin gptimers-example from Documentation
2016-10-10 07:12:02 -06:00
block
block: remove remnant refs to hardsect
2016-09-14 08:44:57 -06:00
blockdev
zram: cosmetic: cleanup documentation
2016-07-26 16:19:19 -07:00
bus-devices
cdrom
cgroup-v1
Three fixes for the docs build, including removing an annoying warning on
2016-08-07 10:23:17 -04:00
cma
connector
samples: connector: from Documentation to samples directory
2016-04-28 07:47:35 -06:00
console
cpu-freq
cpufreq-stats: Minor documentation fix
2016-09-08 23:05:07 +02:00
cpuidle
cris
crypto
crypto: doc - Fix typo
2016-05-31 16:41:55 +08:00
dev-tools
mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping
2016-10-11 15:06:33 -07:00
development-process
docs-rst: add inter-document cross references
2016-09-21 15:43:09 -06:00
device-mapper
dm raid: fix activation of existing raid4/10 devices
2016-10-17 16:41:31 -04:00
devicetree
watchdog: s3c2410: Fix infinite interrupt in soft mode
2017-04-12 12:41:22 +02:00
dmaengine
dmaengine: documentation to the new callback mechanism
2016-08-08 08:11:42 +05:30
DocBook
A single commit converting the mac80211 DocBook template over to Sphinx.
2016-10-14 14:11:22 -07:00
driver-api
docs: Don't format internal MPT docs
2016-09-06 09:15:48 -06:00
driver-model
power supply and reset changes for the v4.9 series
2016-10-06 18:21:15 -07:00
early-userspace
EDID
extcon
fault-injection
fb
Documentation: fb: fix spelling mistakes
2016-05-10 12:05:27 +03:00
features
Documentation: MIPS supports HAVE_REGS_AND_STACK_ACCESS_API
2016-10-13 17:19:19 +02:00
filesystems
fs: remove the never implemented aio_fsync file operation
2016-10-30 13:09:42 -04:00
firmware_class
Documentation: fix common spelling mistakes
2016-04-28 07:51:59 -06:00
fmc
fpga
frv
gpio
gpio/board.txt: point to gpiod_set_value
2016-10-20 14:14:11 +02:00
gpu
Merge tag 'drm-for-v4.9' of git://people.freedesktop.org/~airlied/linux
2016-10-11 18:12:22 -07:00
hid
Documentation: HID: Intel ISH HID document
2016-08-17 11:13:07 +02:00
hwmon
hwmon: (max6650) Allow fan shutdown and initial rpm target
2016-09-08 21:34:17 -07:00
i2c
i2c: Documentation: i2c-topology: fix minor whitespace nit
2016-11-10 21:18:56 +01:00
ia64
selftests: move ia64 tests from Documentation/ia64
2016-09-20 09:58:12 -06:00
ide
iio
iio: Documentation: Correct the path used to create triggers.
2016-10-01 00:49:58 -06:00
infiniband
IB/hfi1: Document new sysfs entries for hfi1 driver
2016-10-02 08:42:19 -04:00
input
Input: ALPS - add V8 protocol documentation
2016-10-04 11:47:02 -07:00
ioctl
doc: ioctl: Add some clarifications to botching-up-ioctls
2016-09-06 06:00:22 -06:00
isdn
isdn: i4l: move active-isdn drivers to staging
2016-03-05 15:00:38 -08:00
ja_JP
Documentatio: HOWTO: remove regression postings info from translations
2016-04-16 10:49:08 -06:00
kbuild
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
kdump
Documentation: kdump: Add description of enable multi-cpus support
2016-09-20 18:02:54 -06:00
ko_KR
locking/Documentation: Add Korean translation
2016-08-12 08:24:14 +02:00
laptops
tools: move laptops dslm tool from Documentation
2016-09-23 13:07:21 -06:00
leds
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
2016-10-04 10:25:53 -07:00
livepatch
Documentation: livepatch: add section about arch-specific code
2016-08-18 23:41:56 +02:00
locking
locking/lglock: Remove lglock implementation
2016-09-22 15:25:56 +02:00
m68k
media
videodev2.h: go back to limited range Y'CbCr for SRGB and, ADOBERGB
2017-02-23 17:44:37 +01:00
memory-devices
metag
mic
samples: move mic/mpssd example code from Documentation
2016-09-20 12:38:48 -06:00
mips
misc-devices
samples: move misc-devices/mei example code from Documentation
2016-09-23 11:51:43 -06:00
mmc
mmc: core: Extend sysfs with DSR register
2016-07-25 10:34:51 +02:00
mn10300
mtd
namespaces
netlabel
networking
netfilter: fix nf_conntrack_helper documentation
2016-11-24 12:50:24 +01:00
nfc
nios2
nvdimm
libnvdimm, btt: update the usage section in Documentation
2016-06-17 16:23:23 -07:00
nvmem
parisc
PCI
PCI changes for the v4.9 merge window:
2016-10-07 11:46:37 -07:00
pcmcia
tools: move pcmcia crc32hash tool from Documentation
2016-09-23 13:07:27 -06:00
perf
perf: xgene: Add APM X-Gene SoC Performance Monitoring Unit driver
2016-09-15 11:20:55 -07:00
phy
platform
power
power supply and reset changes for the v4.9 series
2016-10-06 18:21:15 -07:00
powerpc
powerpc updates for 4.9
2016-10-07 20:19:31 -07:00
pps
Documentation: pps: fix spelling mistake
2016-04-28 07:23:59 -06:00
prctl
selftests: move prctl tests from Documentation/prctl
2016-09-20 09:09:09 -06:00
pti
ptp
selftests: move ptp tests from Documentation/ptp
2016-09-20 09:54:38 -06:00
rapidio
rapidio/documentation/mport_cdev: add missing parameter description
2016-09-01 17:52:02 -07:00
RCU
kthread: kthread worker API cleanup
2016-10-11 15:06:33 -07:00
s390
s390/Documentation: improve sort command for trace buffer
2016-06-13 15:58:23 +02:00
scheduler
sched/deadline: Document behavior of sched_yield()
2016-09-10 11:17:41 +02:00
scsi
scsi: g_NCR5380: Stop using scsi_module.c
2016-09-29 21:52:43 -04:00
security
Some big changes this month, headlined by the addition of a new formatted
2016-07-26 13:05:11 -07:00
serial
Documentation: rs485: Do not define manually the ioctl
2016-08-18 11:08:33 -06:00
sh
sound
ASoC: Updates for v4.8
2016-07-26 10:35:31 +02:00
sphinx
docs: sphinx-extensions: make rstFlatTable work with docutils 0.13
2017-01-09 08:32:18 +01:00
sphinx-static
This is the documentation update pull for the 4.9 merge window.
2016-10-04 13:54:07 -07:00
spi
Doc: update 00-INDEX files to reflect the runnable code move
2016-10-10 07:12:09 -06:00
sysctl
mnt: Add a per mount namespace limit on the number of mounts
2016-09-30 12:46:48 -05:00
target
target: make close_session optional
2016-05-10 01:19:26 -07:00
thermal
thermal: Add support for hardware-tracked trip points
2016-09-27 14:02:16 +08:00
timers
Doc: update 00-INDEX files to reflect the runnable code move
2016-10-10 07:12:09 -06:00
tpm
tpm: Add documentation for the tpm_vtpm_proxy device driver
2016-06-25 17:26:35 +03:00
trace
This release cycle is rather small. Just a few fixes to tracing.
2016-10-06 11:48:41 -07:00
usb
Documentation: tiny typo fix in usb/gadget_multi.txt
2016-06-23 08:09:10 -06:00
virtual
KVM: PPC: Book3S HV: Save/restore XER in checkpointed register state
2017-01-09 08:32:22 +01:00
vm
Three fixes for the docs build, including removing an annoying warning on
2016-08-07 10:23:17 -04:00
w1
w1: add ability to set (SRAM) and store (EEPROM) configuration for temp sensors like DS18B20
2016-05-01 14:37:49 -07:00
watchdog
linux-kselftest-4.9-rc1-update
2016-10-14 15:17:12 -07:00
wimax
x86
Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-10 11:01:51 -07:00
xtensa
xtensa: cleanup MMU setup and kernel layout macros
2016-07-24 06:33:58 +03:00
zh_CN
docs: deprecate kernel-doc-nano-HOWTO.txt
2016-07-20 16:45:37 -06:00
.gitignore
Add .pyc files to .gitignore
2016-06-30 13:07:33 -06:00
00-INDEX
Doc: update 00-INDEX files to reflect the runnable code move
2016-10-10 07:12:09 -06:00
adding-syscalls.txt
documentation: trivial typo: adding-syscalls.txt: s/statat/fstatat/
2016-04-18 11:31:49 -06:00
applying-patches.txt
docs: Clean up bare :: lines
2016-09-20 18:46:36 -06:00
assoc_array.txt
atomic_ops.txt
bad_memory.txt
basic_profiling.txt
bcache.txt
bcache: documentation formatting, edited for clarity, stripe alignment notes
2016-06-23 07:58:38 -06:00
binfmt_misc.txt
binfmt_misc: add F option description to documentation
2016-03-30 14:12:22 -07:00
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt
cgroup-v2.txt
Merge branch 'for-4.6-ns' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2016-03-21 10:05:13 -07:00
Changes
docs: Clean up bare :: lines
2016-09-20 18:46:36 -06:00
circular-buffers.txt
clk.txt
Documentation: clk: update file names containing referenced structures
2016-08-14 12:12:36 -06:00
CodeOfConflict
URL changed for Linux Foundation TAB
2016-10-01 00:57:13 -06:00
CodingStyle
docs: Remove space-before-label guidance from CodingStyle
2016-09-21 15:53:31 -06:00
conf.py
docs-rst: fix LaTeX \DURole renewcommand with Sphinx 1.3+
2017-01-12 11:39:32 +01:00
cpu-hotplug.txt
cpu-load.txt
cputopology.txt
topology/sysfs: provide drawer id and siblings attributes
2016-06-13 15:58:27 +02:00
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt
Documentation: update the devices.txt documentation
2016-03-29 10:11:44 -07:00
digsig.txt
DMA-API-HOWTO.txt
Documentation: DMA-API-HOWTO: Fix a typo
2016-09-20 17:58:46 -06:00
DMA-API.txt
dma-mapping: add dma_{map,unmap}_resource
2016-09-26 22:16:41 +05:30
DMA-attributes.txt
dma-mapping: introduce the DMA_ATTR_NO_WARN attribute
2016-10-11 15:06:32 -07:00
dma-buf-sharing.txt
dma-buf: Update docs for SYNC ioctl
2016-03-21 09:26:45 +01:00
DMA-ISA-LPC.txt
docutils.conf
doc-rst: add docutils config file
2016-08-14 11:52:40 -06:00
dontdiff
GCC plugin infrastructure
2016-06-07 22:57:10 +02:00
dynamic-debug-howto.txt
edac.txt
efi-stub.txt
eisa.txt
email-clients.txt
Documentation/email-clients.txt: convert it to ReST markup
2016-09-21 15:41:50 -06:00
flexible-arrays.txt
futex-requeue-pi.txt
gcc-plugins.txt
GCC plugin infrastructure
2016-06-07 22:57:10 +02:00
highuid.txt
HOWTO
docs: Clean up bare :: lines
2016-09-20 18:46:36 -06:00
hw_random.txt
hwspinlock.txt
index.rst
docs-rst: sphinxify 802.11 documentation
2016-10-11 16:19:17 -06:00
init.txt
initrd.txt
Intel-IOMMU.txt
iommu/vt-d: Fix link to Intel IOMMU Specification
2016-01-29 12:32:12 +01:00
intel_txt.txt
io-mapping.txt
io_ordering.txt
iostats.txt
IPMI.txt
IRQ-affinity.txt
IRQ-domain.txt
Documentation/IRQ-domain.txt: Document irq_domain_create_{linear, tree}
2016-03-31 00:32:59 -06:00
IRQ.txt
irqflags-tracing.txt
isa.txt
Documentation: Add ISA bus driver documentation
2016-05-02 09:32:04 -07:00
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt
docs: deprecate kernel-doc-nano-HOWTO.txt
2016-07-20 16:45:37 -06:00
kernel-docs.txt
Documentation/kernel-docs.txt: reorder based on timestamp
2016-09-20 18:54:42 -06:00
kernel-documentation.rst
This is the documentation update pull for the 4.9 merge window.
2016-10-04 13:54:07 -07:00
kernel-parameters.txt
ACPI / sysfs: Provide quirk mechanism to prevent GPE flooding
2017-04-12 12:41:18 +02:00
kernel-per-CPU-kthreads.txt
Documenation: update cgroup's document path
2016-08-03 15:43:58 -06:00
kobject.txt
kprobes.txt
Documentation: kprobes: Document jprobes stack copying limitations
2016-08-15 10:19:11 -06:00
kref.txt
kselftest.txt
kselftest: kselftest documentation improvement
2016-09-20 08:58:27 -06:00
ldm.txt
local_ops.txt
lockup-watchdogs.txt
logo.gif
logo.txt
lzo.txt
Documentation: lzo: fix spelling mistakes
2016-04-28 07:23:11 -06:00
magic-number.txt
mailbox.txt
Makefile
samples: move blackfin gptimers-example from Documentation
2016-10-10 07:12:02 -06:00
Makefile.sphinx
doc-rst: generic way to build PDF of sub-folders
2016-09-01 08:49:23 -06:00
ManagementStyle
Documentation/HOWTO: add cross-references to other documents
2016-09-20 18:41:04 -06:00
md-cluster.txt
md-cluster: change array_sectors and update size are not supported
2016-05-04 12:39:35 -07:00
md.txt
Documentation: fix wrong value in md.txt
2016-06-23 08:08:36 -06:00
memory-barriers.txt
locking/Documentation: Fix a typo of example result
2016-08-12 08:24:13 +02:00
memory-hotplug.txt
memory_hotplug: introduce CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE
2016-05-19 19:12:14 -07:00
men-chameleon-bus.txt
module-signing.txt
Documentation/module-signing.txt: Note need for version info if reusing a key
2016-07-27 12:38:00 +09:30
mono.txt
nommu-mmap.txt
ntb.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt
phy.txt
phy: core: Allow children node to be overridden
2016-04-29 16:39:39 +02:00
pi-futex.txt
pinctrl.txt
pinctrl: Flag strict is a field in struct pinmux_ops
2016-06-23 10:50:10 +02:00
pnp.txt
preempt-locking.txt
printk-formats.txt
mm, printk: introduce new format string for flags
2016-03-15 16:55:16 -07:00
pwm.txt
pwm: Update documentation
2016-05-17 14:48:04 +02:00
ramoops.txt
ramoops: use DT reserved-memory bindings
2016-08-05 11:21:36 -07:00
rbtree.txt
remoteproc.txt
remoteproc: Split driver and consumer dereferencing
2016-10-02 22:50:21 -07:00
rfkill.txt
rfkill: Add documentation about LED triggers
2016-02-24 09:13:12 +01:00
robust-futex-ABI.txt
robust-futexes.txt
Documentation: robust-futexes: fix spelling mistakes
2016-04-28 07:26:41 -06:00
rpmsg.txt
rpmsg: use module_rpmsg_driver in existing drivers and examples
2016-05-06 11:09:01 -07:00
rtc.txt
rtc: implement a sysfs interface for clock offset
2016-03-14 17:08:16 +01:00
SAK.txt
SecurityBugs
Documentation/HOWTO: add cross-references to other documents
2016-09-20 18:41:04 -06:00
serial-console.txt
sgi-ioc4.txt
SM501.txt
smsc_ece1099.txt
stable_api_nonsense.txt
Documentation/HOWTO: add cross-references to other documents
2016-09-20 18:41:04 -06:00
stable_kernel_rules.txt
Documentation: stable-kernel-rules: fix stable-tag format
2017-04-12 12:41:15 +02:00
static-keys.txt
jump_labels: Allow array initialisers
2016-09-07 09:41:11 +01:00
SubmitChecklist
docs-rst: add inter-document cross references
2016-09-21 15:43:09 -06:00
SubmittingDrivers
docs-rst: add inter-document cross references
2016-09-21 15:43:09 -06:00
SubmittingPatches
docs-rst: add inter-document cross references
2016-09-21 15:43:09 -06:00
svga.txt
sync_file.txt
Documentation: add doc for sync_file_get_fence()
2016-08-11 15:33:24 +05:30
sysfs-rules.txt
sysrq.txt
Doc: correct the location of sysrq.c
2016-04-28 08:02:36 -06:00
this_cpu_ops.txt
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt
VGA-softcursor.txt
video-output.txt
vme_api.txt
vme: Update documentation to match api
2016-08-31 13:20:16 +02:00
volatile-considered-harmful.txt
workqueue.txt
workqueue: Fix a typo in workqueue.txt
2016-07-06 02:37:38 -06:00
xillybus.txt
Documentation: xillybus: fix spelling mistake
2016-04-28 07:44:54 -06:00
xz.txt
zorro.txt