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Document how to use SMI system management interface to enable and
receive SVM events. Document SVM event triggers.
Define SVM events message string format macro that could be used by user
mode for sscanf to parse the event. Add it to uAPI header file to make
it obvious that is changing uAPI in future.
No functional changes.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: James Zhu <James.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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The AXP717 also contains an adjustable boost regulator, to provide the
5V USB VBUS rail when running on battery.
Add the regulator description that states the voltage range this
regulator can cover.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: John Watts <contact@jookia.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Link: https://patch.msgid.link/20240816001824.6028-4-andre.przywara@arm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The AXP717 also contains a boost regulator, to provide the 5V USB VBUS
rail when running on battery.
Add the registers to the MFD description to be able to use them from the
regulator driver.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: John Watts <contact@jookia.org>
Acked-by: Lee Jones <lee@kernel.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Link: https://patch.msgid.link/20240816001824.6028-3-andre.przywara@arm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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for-6.12/block
Pull NVMe updates from Keith:
"nvme updates for Linux 6.12
- Asynchronous namespace scanning (Stuart)
- TCP TLS updates (Hannes)
- RDMA queue controller validation (Niklas)
- Align field names to the spec (Anuj)
- Metadata support validation (Puranjay)"
* tag 'nvme-6.12-2024-09-06' of git://git.infradead.org/nvme:
nvme: fix metadata handling in nvme-passthrough
nvme: rename apptag and appmask to lbat and lbatm
nvme-rdma: send cntlid in the RDMA_CM_REQUEST Private Data
nvme-target: do not check authentication status for admin commands twice
nvmet-auth: allow to clear DH-HMAC-CHAP keys
nvme-sysfs: add 'tls_keyring' attribute
nvme-sysfs: add 'tls_configured_key' sysfs attribute
nvme: split off TLS sysfs attributes into a separate group
nvme: add a newline to the 'tls_key' sysfs attribute
nvme-tcp: check for invalidated or revoked key
nvme-tcp: sanitize TLS key handling
nvme-keyring: restrict match length for version '1' identifiers
nvme_core: scan namespaces asynchronously
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Pull x86 kvm fixes from Paolo Bonzini:
"Many small fixes that accumulated while I was on vacation...
- Fixup missed comments from the REMOVED_SPTE => FROZEN_SPTE rename
- Ensure a root is successfully loaded when pre-faulting SPTEs
- Grab kvm->srcu when handling KVM_SET_VCPU_EVENTS to guard against
accessing memslots if toggling SMM happens to force a VM-Exit
- Emulate MSR_{FS,GS}_BASE on SVM even though interception is always
disabled, so that KVM does the right thing if KVM's emulator
encounters {RD,WR}MSR
- Explicitly clear BUS_LOCK_DETECT from KVM's caps on AMD, as KVM
doesn't yet virtualize BUS_LOCK_DETECT on AMD
- Cleanup the help message for CONFIG_KVM_AMD_SEV, and call out that
KVM now supports SEV-SNP too
- Specialize return value of
KVM_CHECK_EXTENSION(KVM_CAP_READONLY_MEM), based on VM type
- Remove unnecessary dependency on CONFIG_HIGH_RES_TIMERS
- Note an RCU quiescent state on guest exit. This avoids a call to
rcu_core() if there was a grace period request while guest was
running"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: Remove HIGH_RES_TIMERS dependency
kvm: Note an RCU quiescent state on guest exit
KVM: x86: Only advertise KVM_CAP_READONLY_MEM when supported by VM
KVM: SEV: Update KVM_AMD_SEV Kconfig entry and mention SEV-SNP
KVM: SVM: Don't advertise Bus Lock Detect to guest if SVM support is missing
KVM: SVM: fix emulation of msr reads/writes of MSR_FS_BASE and MSR_GS_BASE
KVM: x86: Acquire kvm->srcu when handling KVM_SET_VCPU_EVENTS
KVM: x86/mmu: Check that root is valid/loaded when pre-faulting SPTEs
KVM: x86/mmu: Fixup comments missed by the REMOVED_SPTE=>FROZEN_SPTE rename
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Hopefully the last PR for 6.11, at least for this level of amount.
In addition to the usual HD-audio quirks, there are more changes in
ASoC, but all look small and device-specific fixes, and nothing stands
out. The only slightly big change is sunxi I2S fix, which looks quite
safe to apply, too"
* tag 'sound-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
ALSA: hda/realtek - Fix inactive headset mic jack for ASUS Vivobook 15 X1504VAP
ALSA: hda/realtek: Support mute LED on HP Laptop 14-dq2xxx
ALSA: hda/realtek: Enable Mute Led for HP Victus 15-fb1xxx
ALSA: hda/realtek: extend quirks for Clevo V5[46]0
ASoC: codecs: lpass-va-macro: set the default codec version for sm8250
ALSA: hda: add HDMI codec ID for Intel PTL
ALSA: hda/realtek: add patch for internal mic in Lenovo V145
ASoC: sunxi: sun4i-i2s: fix LRCLK polarity in i2s mode
ASoC: amd: yc: Add a quirk for MSI Bravo 17 (D7VEK)
ASoC: mediatek: mt8188-mt6359: Modify key
ASoc: SOF: topology: Clear SOF link platform name upon unload
ALSA: hda/conexant: Add pincfg quirk to enable top speakers on Sirius devices
ASoC: SOF: ipc: replace "enum sof_comp_type" field with "uint32_t"
ASoC: fix module autoloading
ASoC: tda7419: fix module autoloading
ASoC: google: fix module autoloading
ASoC: intel: fix module autoloading
ASoC: tegra: Fix CBB error during probe()
ASoC: dapm: Fix UAF for snd_soc_pcm_runtime object
ASoC: Intel: soc-acpi-cht: Make Lenovo Yoga Tab 3 X90F DMI match less strict
...
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Pull drm fixes from Dave Airlie:
"This has a fair few patches in it, but I reviewed them all and they
seem like real things, amdgpu, i915 and xe each have a bunch of fixes
for various things, then there is a some bridge suspend/resume
ordering fixes for a recent rework, and then some single driver
changes in a few others.
Nothing looks too serious, hopefully next week is quiet.
amdgpu:
- IPS workaround
- Fix compatibility with older MES firmware
- Fix CPU spikes when clearing VRAM
- Backlight fix
- PMO fix
- Revert SWSMU change to fix regression
xe:
- GSC loading fix
- PCODE mutex fix
- Suspend/Resume fixes
- RPM fixes
i915:
- Do not attempt to load the GSC multiple times
- Fix readout degamma_lut mismatch on ilk/snb
- Mark debug_fence_init_onstack() with __maybe_unused
- fence: Mark debug_fence_free() with __maybe_unused
- display: Add mechanism to use sink model when applying quirk
- display: Increase Fast Wake Sync length as a quirk
komeda:
- zpos normalization fix
nouveau:
- incorrect register fix
imagination:
- memory leak fix
bridge:
- hdmi/bridge rework fixes
panthor:
- cache coherency fix
- hi priority access fix
panel:
- change of compatible string
fbdev:
- deferred-io init with no struct page fix"
* tag 'drm-fixes-2024-09-06' of https://gitlab.freedesktop.org/drm/kernel: (29 commits)
Revert "drm/amdgpu: align pp_power_profile_mode with kernel docs"
drm/fbdev-dma: Only install deferred I/O if necessary
drm/panthor: flush FW AS caches in slow reset path
drm: panel: nv3052c: Correct WL-355608-A8 panel compatible
dt-bindings: display: panel: Rename WL-355608-A8 panel to rg35xx-*-panel
drm/panthor: Restrict high priorities on group_create
drm/xe/display: Avoid encoder_suspend at runtime suspend
drm/xe: Suspend/resume user access only during system s/r
drm/xe/display: Match i915 driver suspend/resume sequences better
drm/xe: Add missing runtime reference to wedged upon gt_reset
drm/xe/pcode: Treat pcode as per-tile rather than per-GT
drm/xe/gsc: Do not attempt to load the GSC multiple times
drm/bridge-connector: reset the HDMI connector state
drm/bridge-connector: move to DRM_DISPLAY_HELPER module
drm/display: stop depending on DRM_DISPLAY_HELPER
drm/i915/display: Increase Fast Wake Sync length as a quirk
drm/i915/display: Add mechanism to use sink model when applying quirk
drm/amd/display: Block timing sync for different signals in PMO
drm/amd/display: Lock DC and exit IPS when changing backlight
drm/amdgpu: always allocate cleared VRAM for GEM allocations
...
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This helper function will soon be used from a vendor driver, let's
export it through the spinand.h header. No need for any export, as there
is currently no reason for any module to need it.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240826101412.20644-6-miquel.raynal@bootlin.com
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A regular page read consist in:
- Asking one page of content from the NAND array to be loaded in the
chip's SRAM,
- Waiting for the operation to be done,
- Retrieving the data (I/O phase) from the chip's SRAM.
When reading several sequential pages, the above operation is repeated
over and over. There is however a way to optimize these accesses, by
enabling continuous reads. The feature requires the NAND chip to have a
second internal SRAM area plus a bit of additional internal logic to
trigger another internal transfer between the NAND array and the second
SRAM area while the I/O phase is ongoing. Once the first I/O phase is
done, the host can continue reading more data, continuously, as the chip
will automatically switch to the second SRAM content (which has already
been loaded) and in turns trigger the next load into the first SRAM area
again.
From an instruction perspective, the command op-codes are different, but
the same cycles are required. The only difference is that after a
continuous read (which is stopped by a CS deassert), the host must
observe a delay of tRST. However, because there is no guarantee in Linux
regarding the actual state of the CS pin after a transfer (in order to
speed-up the next transfer if targeting the same device), it was
necessary to manually end the continuous read with a configuration
register write operation.
Continuous reads have two main drawbacks:
* They only work on full pages (column address ignored)
* Only the main data area is pulled, out-of-band bytes are not
accessible. Said otherwise, the feature can only be useful with on-die
ECC engines.
Performance wise, measures have been performed on a Zynq platform using
Macronix SPI-NAND controller with a Macronix chip (based on the
flash_speed tool modified for testing sequential reads):
- 1-1-1 mode: performances improved from +3% (2-pages) up to +10% after
a dozen pages.
- 1-1-4 mode: performances improved from +15% (2-pages) up to +40% after
a dozen pages.
This series is based on a previous work from Macronix engineer Jaime
Liao.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/linux-mtd/20240826101412.20644-5-miquel.raynal@bootlin.com
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In order to be able to iterate easily across eraseblocks rather than
pages, let's introduce a block iterator inspired from the page iterator.
The main usage of this iterator will be for continuous/sequential reads,
where it is interesting to use a single request rather than split the
requests in smaller chunks (ie. pages) that can be hardly optimized.
So a "continuous" boolean get's added for this purpose.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240826101412.20644-3-miquel.raynal@bootlin.com
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Soon a helper for iterating over blocks will be needed (for continuous
read purposes). In order to clarify the intend of this helper, let's
rename it with the "page" wording inside.
While at it, improve the doc and fix a typo.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/linux-mtd/20240826101412.20644-2-miquel.raynal@bootlin.com
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The NBD protocol defines a message for zeroing out a region of an export
Add support to the kernel driver for that message.
Signed-off-by: Wouter Verhelst <w@uter.be>
Cc: Eric Blake <eblake@redhat.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20240812133032.115134-3-w@uter.be
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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rtd->initialized is used to know whether soc_init_pcm_runtime()
was correctly fined, and used to call snd_soc_link_exit().
We don't need to have it as bool, let's make it bit-field same as
other flags.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Cc: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://patch.msgid.link/87o752k7gq.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Provides the capability to register an external callback for the ACPI PM
timer, which is called during the suspend and resume processes.
Signed-off-by: Marek Maslanka <mmaslanka@google.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20240812184150.1079924-1-mmaslanka@google.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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Currently DFS works under assumption there could be only one channel
context in the hardware. Hence, drivers just calls the function
ieee80211_radar_detected() passing the hardware structure. However, with
MLO, this obviously will not work since number of channel contexts will be
more than one and hence drivers would need to pass the channel information
as well on which the radar is detected.
Also, when radar is detected in one of the links, other link's CAC should
not be cancelled.
Hence, in order to support DFS with MLO, do the following changes -
* Add channel context conf pointer as an argument to the function
ieee80211_radar_detected(). During MLO, drivers would have to pass on
which channel context conf radar is detected. Otherwise, drivers could
just pass NULL.
* ieee80211_radar_detected() will iterate over all channel contexts
present and
* if channel context conf is passed, only mark that as radar
detected
* if NULL is passed, then mark all channel contexts as radar
detected
* Then as usual, schedule the radar detected work.
* In the worker, go over all the contexts again and for all such context
which is marked with radar detected, cancel the ongoing CAC by calling
ieee80211_dfs_cac_cancel() and then notify cfg80211 via
cfg80211_radar_event().
* To cancel the CAC, pass the channel context as well where radar is
detected to ieee80211_dfs_cac_cancel(). This ensures that CAC is
canceled only on the links using the provided context, leaving other
links unaffected.
This would also help in scenarios where there is split phy 5 GHz radio,
which is capable of DFS channels in both lower and upper band. In this
case, simultaneous radars can be detected.
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20240906064426.2101315-9-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Currently, during starting a radar detection, no link id information is
parsed and passed down. In order to support starting radar detection
during Multi Link Operation, it is required to pass link id as well.
Add changes to first parse and then pass link id in the start radar
detection path.
Additionally, update notification APIs to allow drivers/mac80211 to
pass the link ID.
However, everything is handled at link 0 only until all API's are ready to
handle it per link.
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20240906064426.2101315-6-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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A few members related to DFS handling are currently under per wireless
device data structure. However, in order to support DFS with MLO, there is
a need to have them on a per-link manner.
Hence, as a preliminary step, move members cac_started, cac_start_time
and cac_time_ms to be on a per-link basis.
Since currently, link ID is not known at all places, use default value of
0 for now.
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20240906064426.2101315-5-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Replace ksz8830 with ksz88x3 for CHIP_ID definition and other
strings. This due to KSZ8830 not being an actual switch but the Chip
ID shared among KSZ8863/8873 switches, impossible to differentiate
from their Chip ID or Revision ID registers.
Now all KSZ*_CHIP_ID macros refer to actual, existing switches which
removes confusion.
Signed-off-by: Pieter Van Trappen <pieter.van.trappen@cern.ch>
Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds a sample rate definition for 12kHz, 24kHz and 128kHz.
Admittedly, just a few drivers are currently using these sample
rates but there is enough of a recurrence to justify adding a definition
for them and remove some custom rate constraint code while at it.
The new definitions are not added to the interval definitions, such as
SNDRV_PCM_RATE_8000_44100, because it would silently add new supported
rates to drivers that may or may not support them. For sure the drivers
have not been tested for these new rates so it is better to leave them out
of interval definitions.
That being said, the added rates are multiples of well know rates families,
it is very likely that a lot of devices out there actually supports them.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: David Rhodes <drhodes@opensource.cirrus.com>
Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20240905-alsa-12-24-128-v1-1-8371948d3921@baylibre.com
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v6.11
A larger set of fixes than I'd like at this point, but mainly due to
people working on fixing module autoloading by adding missing exports of
ID tables rather than anything particularly concerning. There are some
other runtime fixes and quirks, and a tweak to the ABI definition for
SOF which ensures that a struct layout doesn't vary depending on the
architecture of the host.
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Cross-merge networking fixes after downstream PR.
Conflicts:
drivers/net/phy/phy_device.c
2560db6ede1a ("net: phy: Fix missing of_node_put() for leds")
1dce520abd46 ("net: phy: Use for_each_available_child_of_node_scoped()")
https://lore.kernel.org/20240904115823.74333648@canb.auug.org.au
Adjacent changes:
drivers/net/ethernet/xilinx/xilinx_axienet.h
drivers/net/ethernet/xilinx/xilinx_axienet_main.c
858430db28a5 ("net: xilinx: axienet: Fix race in axienet_stop")
76abb5d675c4 ("net: xilinx: axienet: Add statistics support")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In commit 6f8b12d661d0 ("net: napi: add hard irqs deferral feature")
napi_defer_irqs was added to net_device and napi_defer_irqs_count was
added to napi_struct, both as type int.
This value never goes below zero, so there is not reason for it to be a
signed int. Change the type for both from int to u32, and add an
overflow check to sysfs to limit the value to S32_MAX.
The limit of S32_MAX was chosen because the practical limit before this
patch was S32_MAX (anything larger was an overflow) and thus there are
no behavioral changes introduced. If the extra bit is needed in the
future, the limit can be raised.
Before this patch:
$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'
$ cat /sys/class/net/eth4/napi_defer_hard_irqs
-2147483647
After this patch:
$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs'
bash: line 0: echo: write error: Numerical result out of range
Similarly, /sys/class/net/XXXXX/tx_queue_len is defined as unsigned:
include/linux/netdevice.h: unsigned int tx_queue_len;
And has an overflow check:
dev_change_tx_queue_len(..., unsigned long new_len):
if (new_len != (unsigned int)new_len)
return -ERANGE;
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Joe Damato <jdamato@fastly.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20240904153431.307932-1-jdamato@fastly.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
A zpos normalization fix for komeda, a register bitmask fix for nouveau,
a memory leak fix for imagination, three fixes for the recent bridge
HDMI work, a potential DoS fix and a cache coherency for panthor, a
change of panel compatible and a deferred-io fix when used with
non-highmem memory.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240905-original-radical-guan-e7a2ae@houat
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from can, bluetooth and wireless.
No known regressions at this point. Another calm week, but chances are
that has more to do with vacation season than the quality of our work.
Current release - new code bugs:
- smc: prevent NULL pointer dereference in txopt_get
- eth: ti: am65-cpsw: number of XDP-related fixes
Previous releases - regressions:
- Revert "Bluetooth: MGMT/SMP: Fix address type when using SMP over
BREDR/LE", it breaks existing user space
- Bluetooth: qca: if memdump doesn't work, re-enable IBS to avoid
later problems with suspend
- can: mcp251x: fix deadlock if an interrupt occurs during
mcp251x_open
- eth: r8152: fix the firmware communication error due to use of bulk
write
- ptp: ocp: fix serial port information export
- eth: igb: fix not clearing TimeSync interrupts for 82580
- Revert "wifi: ath11k: support hibernation", fix suspend on Lenovo
Previous releases - always broken:
- eth: intel: fix crashes and bugs when reconfiguration and resets
happening in parallel
- wifi: ath11k: fix NULL dereference in ath11k_mac_get_eirp_power()
Misc:
- docs: netdev: document guidance on cleanup.h"
* tag 'net-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (61 commits)
ila: call nf_unregister_net_hooks() sooner
tools/net/ynl: fix cli.py --subscribe feature
MAINTAINERS: fix ptp ocp driver maintainers address
selftests: net: enable bind tests
net: dsa: vsc73xx: fix possible subblocks range of CAPT block
sched: sch_cake: fix bulk flow accounting logic for host fairness
docs: netdev: document guidance on cleanup.h
net: xilinx: axienet: Fix race in axienet_stop
net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN
r8152: fix the firmware doesn't work
fou: Fix null-ptr-deref in GRO.
bareudp: Fix device stats updates.
net: mana: Fix error handling in mana_create_txq/rxq's NAPI cleanup
bpf, net: Fix a potential race in do_sock_getsockopt()
net: dqs: Do not use extern for unused dql_group
sch/netem: fix use after free in netem_dequeue
usbnet: modern method to get random MAC
MAINTAINERS: wifi: cw1200: add net-cw1200.h
ice: do not bring the VSI up, if it was down before the XDP setup
ice: remove ICE_CFG_BUSY locking from AF_XDP code
...
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"A fix from Doug Anderson for a missing stub, required to fix the build
for some newly added users of devm_regulator_bulk_get_const() in
!REGULATOR configurations"
* tag 'regulator-fix-v6.11-stub' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: core: Stub devm_regulator_bulk_get_const() if !CONFIG_REGULATOR
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Add a missing kerneldoc comment for the 'test' test context parameter,
fixing the following warning:
include/kunit/test.h:492: warning: Function parameter or struct member 'test' not described in 'kunit_kfree_const'
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/lkml/20240827160631.67e121ed@canb.auug.org.au/
Fixes: f2c6dbd22017 ("kunit: Device wrappers should also manage driver name")
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Kees Cook <kees@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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helpers.
Add some comments to explain why we should use string_choices helpers.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Acked-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20240905092540.2962122-3-lihongbo22@huawei.com
Signed-off-by: Kees Cook <kees@kernel.org>
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Similar to the exists helper: str_enable_disable/
str_enabled_disabled/str_on_off/str_yes_no helpers, we can
add the opposite helpers. That's str_disable_enable,
str_disabled_enabled, str_off_on and str_no_yes.
There are more than 10 cases currently (expect
str_disable_enable now has 3 use cases) exist in the code
can be replaced with these helper.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Acked-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20240905092540.2962122-2-lihongbo22@huawei.com
Signed-off-by: Kees Cook <kees@kernel.org>
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Add str_true_false()/str_false_true() helper to return "true" or
"false" string literal.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://lore.kernel.org/r/20240827024517.914100-2-lihongbo22@huawei.com
Signed-off-by: Kees Cook <kees@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit fix fromShuah Khan:
"One single fix to a use-after-free bug resulting from
kunit_driver_create() failing to copy the driver name leaving it on
the stack or freeing it"
* tag 'linux_kselftest-kunit-fixes-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: Device wrappers should also manage driver name
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While kunit/visibility.h is today not included in any generated
kernel documentation, also likely due to the fact that none of the
existing comments are correctly recognized as kernel-doc, but once
we decide to add this header and fix the tool, there will be:
../include/kunit/visibility.h:61: warning: Function parameter or
struct member 'symbol' not described in 'EXPORT_SYMBOL_IF_KUNIT'
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Acked-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Since the WMI driver core now takes care of retrieving the
WMI event data even for legacy WMI notify handlers, this
function is no longer used.
Remove it to prevent WMI drivers from messing up the ACPI
firmware on some machines.
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240901031055.3030-4-W_Armin@gmx.de
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The current legacy WMI handlers are susceptible to picking up wrong
WMI event data on systems where different WMI devices share some
notification IDs.
Prevent this by letting the WMI driver core taking care of retrieving
the event data. This also simplifies the legacy WMI handlers and their
implementation inside the WMI driver core.
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240901031055.3030-3-W_Armin@gmx.de
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Merge "hwmon fixes for v6.11-rc7" into review-hans to bring in
commit a54da9df75cd ("hwmon: (hp-wmi-sensors) Check if WMI event
data exists").
This is a dependency for a set of WMI event data refactoring changes.
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Much like latch_tree, add two RCU methods for the regular RB-tree,
which can be used in conjunction with a seqcount to provide lockless
lookups.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20240903174603.3554182-7-andrii@kernel.org
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With uprobe_unregister() having grown a synchronize_srcu(), it becomes
fairly slow to call. Esp. since both users of this API call it in a
loop.
Peel off the sync_srcu() and do it once, after the loop.
We also need to add uprobe_unregister_sync() into uprobe_register()'s
error handling path, as we need to be careful about returning to the
caller before we have a guarantee that partially attached consumer won't
be called anymore. This is an unlikely slow path and this should be
totally fine to be slow in the case of a failed attach.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Co-developed-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240903174603.3554182-6-andrii@kernel.org
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uprobe->register_rwsem is one of a few big bottlenecks to scalability of
uprobes, so we need to get rid of it to improve uprobe performance and
multi-CPU scalability.
First, we turn uprobe's consumer list to a typical doubly-linked list
and utilize existing RCU-aware helpers for traversing such lists, as
well as adding and removing elements from it.
For entry uprobes we already have SRCU protection active since before
uprobe lookup. For uretprobe we keep refcount, guaranteeing that uprobe
won't go away from under us, but we add SRCU protection around consumer
list traversal.
Lastly, to keep handler_chain()'s UPROBE_HANDLER_REMOVE handling simple,
we remember whether any removal was requested during handler calls, but
then we double-check the decision under a proper register_rwsem using
consumers' filter callbacks. Handler removal is very rare, so this extra
lock won't hurt performance, overall, but we also avoid the need for any
extra protection (e.g., seqcount locks).
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240903174603.3554182-5-andrii@kernel.org
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It serves no purpose beyond adding unnecessray argument passed to the
filter callback. Just get rid of it, no one is actually using it.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240903174603.3554182-4-andrii@kernel.org
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/drivers
Qualcomm driver updates for v6.12
Support is added for making SCM driver configure the system either for a
full or minimal ramdump following a system crash. The ramdump mode is
changed from being enable-only to enable/disable as requested.
The QSEECOM uefisecapp interface is allow-listed on Surface Laptop 7 and
Lenovo Thinkpad T14s, providing EFI variable access.
The change to match the SMD RPM driver based on the SMD channel name is
reverted, in favor of stepping back to OF-based matching, as a means to
get module autoloading to work properly.
AOSS, APR, ICE, OCMEM, PBS and SMP2P drivers has error handling cleaned
up using scoped resources.
Trace events are added to the BWMON and SMP2P drivers, for better
insights into their operations.
The X1E LLCC configuration data is updated based on recommended values.
A number of platforms are added to the in-kernel PD-mapper.
SocInfo driver is extended with IDs from SM7325, QCS8275 and QCS8300
families.
* tag 'qcom-drivers-for-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (33 commits)
firmware: qcom: scm: Allow QSEECOM on Surface Laptop 7 models
dt-bindings: soc: qcom: qcom,pmic-glink: Document SM7325 compatible
soc: qcom: pd_mapper: Add SM7325 compatible
soc: qcom: socinfo: Add Soc IDs for SM7325 family
dt-bindings: arm: qcom,ids: Add IDs for SM7325 family
soc: qcom: socinfo: add QCS8275/QCS8300 SoC ID
dt-bindings: arm: qcom,ids: add SoC ID for QCS8275/QCS8300
soc: qcom: smp2p: use scoped device node handling to simplify error paths
soc: qcom: pbs: use scoped device node handling to simplify error paths
soc: qcom: ocmem: use scoped device node handling to simplify error paths
soc: qcom: ice: use scoped device node handling to simplify error paths
soc: qcom: aoss: simplify with scoped for each OF child loop
soc: qcom: apr: simplify with scoped for each OF child loop
soc: qcom: smd-rpm: add qcom,smd-rpm compatible
dt-bindings: soc: qcom: smd-rpm: add generic compatibles
Revert "soc: qcom: smd-rpm: Match rpmsg channel instead of compatible"
firmware: qcom: scm: Add multiple download mode support
firmware: qcom: scm: Refactor code to support multiple dload mode
soc: qcom: pd_mapper: Add more older platforms without domains
soc: qcom: pd_mapper: Add X1E80100
...
Link: https://lore.kernel.org/r/20240904193042.15118-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap into soc/drivers
ARM: OMAP2+: misc driver updates for v6.12
* tag 'omap-for-v6.12/drivers-signed' of https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap:
ARM: OMAP2+: Remove obsoleted declaration for gpmc_onenand_init
bus: ti-sysc: Remove excess struct member 'disable_on_idle' description
bus: ti-sysc: Use of_property_present()
Link: https://lore.kernel.org/r/7hcyljarit.fsf@baylibre.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Common alloca and free pages routines are called when IOMMU DMA is used,
and internally it calls to DMA ops structure which is not available for
default IOMMU. This patch adds necessary if checks to call IOMMU DMA.
It fixes the following crash:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000040
Mem abort info:
ESR = 0x0000000096000006
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x06: level 2 translation fault
Data abort info:
ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000
CM = 0, WnR = 0, TnD = 0, TagAccess = 0
GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=00000000d20bb000
[0000000000000040] pgd=08000000d20c1003
, p4d=08000000d20c1003
, pud=08000000d20c2003, pmd=0000000000000000
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in: ipv6 hci_uart venus_core btqca
v4l2_mem2mem btrtl qcom_spmi_adc5 sbs_battery btbcm qcom_vadc_common
cros_ec_typec videobuf2_v4l2 leds_cros_ec cros_kbd_led_backlight
cros_ec_chardev videodev elan_i2c
videobuf2_common qcom_stats mc bluetooth coresight_stm stm_core
ecdh_generic ecc pwrseq_core panel_edp icc_bwmon ath10k_snoc ath10k_core
ath mac80211 phy_qcom_qmp_combo aux_bridge libarc4 coresight_replicator
coresight_etm4x coresight_tmc
coresight_funnel cfg80211 rfkill coresight qcom_wdt cbmem ramoops
reed_solomon pwm_bl coreboot_table backlight crct10dif_ce
CPU: 7 UID: 0 PID: 70 Comm: kworker/u32:4 Not tainted 6.11.0-rc6-next-20240903-00003-gdfc6015d0711 #660
Hardware name: Google Lazor Limozeen without Touchscreen (rev5 - rev8) (DT)
Workqueue: events_unbound deferred_probe_work_func
hub 2-1:1.0: 4 ports detected
pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dma_common_alloc_pages+0x54/0x1b4
lr : dma_common_alloc_pages+0x4c/0x1b4
sp : ffff8000807d3730
x29: ffff8000807d3730 x28: ffff02a7d312f880 x27: 0000000000000001
x26: 000000000000c000 x25: 0000000000000000 x24: 0000000000000001
x23: ffff02a7d23b6898 x22: 0000000000006cc0 x21: 000000000000c000
x20: ffff02a7858bf410 x19: fffffe0a60006000 x18: 0000000000000001
x17: 00000000000000d5 x16: 1fffe054f0bcc261 x15: 0000000000000001
x14: ffff02a7844dc680 x13: 0000000000100180 x12: dead000000000100
x11: dead000000000122 x10: 00000000001001ff x9 : ffff02a87f7b7b00
x8 : ffff02a87f7b7b00 x7 : ffff405977d6b000 x6 : ffff8000807d3310
x5 : ffff02a87f6b6398 x4 : 0000000000000001 x3 : ffff405977d6b000
x2 : ffff02a7844dc600 x1 : 0000000100000000 x0 : fffffe0a60006000
Call trace:
dma_common_alloc_pages+0x54/0x1b4
__dma_alloc_pages+0x68/0x90
dma_alloc_pages+0x10/0x1c
snd_dma_noncoherent_alloc+0x28/0x8c
__snd_dma_alloc_pages+0x30/0x50
snd_dma_alloc_dir_pages+0x40/0x80
do_alloc_pages+0xb8/0x13c
preallocate_pcm_pages+0x6c/0xf8
preallocate_pages+0x160/0x1a4
snd_pcm_set_managed_buffer_all+0x64/0xb0
lpass_platform_pcm_new+0xc0/0xe8
snd_soc_pcm_component_new+0x3c/0xc8
soc_new_pcm+0x4fc/0x668
snd_soc_bind_card+0xabc/0xbac
snd_soc_register_card+0xf0/0x108
devm_snd_soc_register_card+0x4c/0xa4
sc7180_snd_platform_probe+0x180/0x224
platform_probe+0x68/0xc0
really_probe+0xbc/0x298
__driver_probe_device+0x78/0x12c
driver_probe_device+0x3c/0x15c
__device_attach_driver+0xb8/0x134
bus_for_each_drv+0x84/0xe0
__device_attach+0x9c/0x188
device_initial_probe+0x14/0x20
bus_probe_device+0xac/0xb0
deferred_probe_work_func+0x88/0xc0
process_one_work+0x14c/0x28c
worker_thread+0x2cc/0x3d4
kthread+0x114/0x118
ret_from_fork+0x10/0x20
Code: f9411c19 940000c9 aa0003f3 b4000460 (f9402326)
---[ end trace 0000000000000000 ]---
Fixes: b5c58b2fdc42 ("dma-mapping: direct calls for dma-iommu")
Closes: https://lore.kernel.org/all/10431dfd-ce04-4e0f-973b-c78477303c18@notapiano
Reported-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> #KernelCI
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/dt
Qualcomm Arm64 DeviceTree updates for v6.12
This introduces support for the following devices:
- Lenovo Thinkpad T14s Gen 6
- Microsoft Surface Laptop 7 laptop
- Lenovo A6000
- Lenovo A6010
- Samsung Galaxy J3,
- Lenovo Vibe K5 (multiple variants)
- LG G4
IPQ5332 global clock controller is marked as an interconnect-provider,
and the USB interrupt triggers are corrected.
Touchscreen description is added to the Samsung Galaxy Core Prime and
Max, and touch keys are added to the Samsung Galaxy Grand Prime and
Galaxy Tab A.
Camera flash is added to BQ Aquaris M5 and X5.
The SD-card slot is described for the QCM6490 IDP.
For SA8775P CPU and LLCC bwmon is added, audio, compute and general
purpose DSP remoteprocs are added, with FastRPC on audio and compute
DSP. CPUidle states, capacity and DPC properties are added.
On SC8180X definitions for the multiport USB controller is introduced,
and enabled on the Lenovo Flex 5G to bring the camera to life. Power key
definitions are added as well.
The RGB camera sensor on the Lenovo ThinkPad X13s is described. PCIe
pinconf properties are cleaned up on this and the CRD. The four USB
Type-A ports found on the SA8295P ADP are enabled.
The modem subsystem remoteproc is introduced on the SDX75 and enabled on
the IDP device.
Camera, display and GPU clock controllers are added for the SM4450
platform.
On the F(x)tec Pro1X device, display, GPU, WiFi, RGB LED, SD-card,
remoteprocs, USB3 SuperSpeed, touchscreen, IO-expander, hall switch,
caps lock LED and camera button are introduced.
The camera clock controller is added to SM8150, and the GPU-only
"amd,imageon" compatible is dropped from the MTP device.
Refgen regulator for the DSI nodes of SM8350 is described, and the
display subsystem interconnect paths are corrected.
The camera control interface controllers are described on both SM8550
and SM8650. The bluetooth node on on SM8550 QRD, SM8650 QRD and SM8650
HDK are transitioned to the power sequence description. WiFi is added to
the SM8550 hardware development kit (HDK).
On the X1 Elite platform, one more UART, a DisplayPort PHY, the USB
multiport controller, a PCIe controller and PHY are added. Orientation
switching is wired up for the USB+DP PHYs. RPMh statistics node is
added. For the X1 Elite CRD the LID switch and the SDX65 modems are
introduced.
* tag 'qcom-arm64-for-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (120 commits)
arm64: dts: qcom: x1e80100: Fix PHY for DP2
arm64: dts: qcom: qcm6490-idp: Add SD Card node
arm64: dts: qcom: x1e80100: Add orientation-switch to all USB+DP QMP PHYs
arm64: dts: qcom: Add X1E78100 ThinkPad T14s Gen 6
dt-bindings: arm: qcom: Add Lenovo ThinkPad T14s Gen 6
Revert "arm64: dts: qcom: msm8939-longcheer-l9100: Add rear flash"
arm64: dts: qcom: Add support for X1-based Surface Laptop 7 devices
arm64: dts: qcom: x1e80100: Add UART2
arm64: dts: qcom: x1e80100-pmics: Add PMC8380C PWM
dt-bindings: arm: qcom: Add Surface Laptop 7 devices
arm64: dts: qcom: sm8150-mtp: drop incorrect amd,imageon
arm64: qcom: sa8775p: Add ADSP and CDSP0 fastrpc nodes
arm64: dts: qcom: x1e80100: Add USB Multiport controller
arm64: dts: qcom: sa8775p: fix the fastrpc label
arm64: dts: qcom: ipq5332: Add icc provider ability to gcc
dt-bindings: interconnect: Add Qualcomm IPQ5332 support
arm64: dts: qcom: sm8250: move lpass codec macros to use clks directly
arm64: dts: qcom: msm8998: Add disabled support for LPASS iommu for Q6
dt-bindings: clock: gcc-msm8998: Add Q6 and LPASS clocks definitions
arm64: dts: qcom: msm8976: Add restart node
...
Link: https://lore.kernel.org/r/20240904215752.24465-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into soc/dt
Renesas DTS updates for v6.12 (take two)
- Add support for Ethernet TSN and PCIe on the R-Car V4H SoC and the
White-Hawk (Single) development board,
- Add display support for the RZ/G2UL SoC and the RZ/G2UL SMARC EVk
board,
- Add I2C support for the RZ/G3S SoC and the RZ/G3S SMARC EVK board,
- Add support for HDMI audio on the RZ/G2L and RZ/G2LC SMARC EVK
boards,
- Add initial support for the RZ/V2H(P) (R9A09G057) SoC and the RZ/V2H
EVK board,
- Miscellaneous fixes and improvements.
* tag 'renesas-dts-for-v6.12-tag2' of https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel: (34 commits)
arm64: dts: renesas: r8a779h0: Add family fallback for CSISP IP
arm64: dts: renesas: r8a779a0: Add family fallback for CSISP IP
arm64: dts: renesas: r8a779g0: Add family fallback for CSISP IP
arm64: dts: renesas: r8a779h0: Add family fallback for VIN IP
arm64: dts: renesas: r8a779a0: Add family fallback for VIN IP
arm64: dts: renesas: r8a779g0: Add family fallback for VIN IP
arm64: dts: renesas: r9a09g057h44-rzv2h-evk: Enable watchdog
arm64: dts: renesas: r9a09g057h44-rzv2h-evk: Enable OSTM, I2C, and SDHI
arm64: dts: renesas: r9a09g057: Add WDT0-WDT3 nodes
arm64: dts: renesas: r9a09g057: Add SDHI0-SDHI2 nodes
arm64: dts: renesas: r9a09g057: Add RIIC0-RIIC8 nodes
arm64: dts: renesas: r9a09g057: Add OSTM0-OSTM7 nodes
arm64: dts: renesas: Add initial DTS for RZ/V2H EVK board
arm64: dts: renesas: Add initial SoC DTSI for RZ/V2H(P) SoC
dt-bindings: soc: renesas: Document RZ/V2H EVK board
dt-bindings: clock: renesas: Document RZ/V2H(P) SoC CPG
arm64: dts: renesas: r9a07g043u11-smarc: Enable DU
arm64: dts: renesas: rzg2lc-smarc: Enable HDMI audio
arm64: dts: renesas: rzg2l-smarc: Enable HDMI audio
arm64: dts: renesas: r9a07g043u: Add DU node
...
Link: https://lore.kernel.org/r/cover.1725374275.git.geert+renesas@glider.be
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Now that we provide a unique 64-bit mount ID interface in statx(2), we
can now provide a race-free way for name_to_handle_at(2) to provide a
file handle and corresponding mount without needing to worry about
racing with /proc/mountinfo parsing or having to open a file just to do
statx(2).
While this is not necessary if you are using AT_EMPTY_PATH and don't
care about an extra statx(2) call, users that pass full paths into
name_to_handle_at(2) need to know which mount the file handle comes from
(to make sure they don't try to open_by_handle_at a file handle from a
different filesystem) and switching to AT_EMPTY_PATH would require
allocating a file for every name_to_handle_at(2) call, turning
err = name_to_handle_at(-EBADF, "/foo/bar/baz", &handle, &mntid,
AT_HANDLE_MNT_ID_UNIQUE);
into
int fd = openat(-EBADF, "/foo/bar/baz", O_PATH | O_CLOEXEC);
err1 = name_to_handle_at(fd, "", &handle, &unused_mntid, AT_EMPTY_PATH);
err2 = statx(fd, "", AT_EMPTY_PATH, STATX_MNT_ID_UNIQUE, &statxbuf);
mntid = statxbuf.stx_mnt_id;
close(fd);
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Link: https://lore.kernel.org/r/20240828-exportfs-u64-mount-id-v3-2-10c2c4c16708@cyphar.com
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Unfortunately, the way we have gone about adding new AT_* flags has
been a little messy. In the beginning, all of the AT_* flags had generic
meanings and so it made sense to share the flag bits indiscriminately.
However, we inevitably ran into syscalls that needed their own
syscall-specific flags. Due to the lack of a planned out policy, we
ended up with the following situations:
* Existing syscalls adding new features tended to use new AT_* bits,
with some effort taken to try to re-use bits for flags that were so
obviously syscall specific that they only make sense for a single
syscall (such as the AT_EACCESS/AT_REMOVEDIR/AT_HANDLE_FID triplet).
Given the constraints of bitflags, this works well in practice, but
ideally (to avoid future confusion) we would plan ahead and define a
set of "per-syscall bits" ahead of time so that when allocating new
bits we don't end up with a complete mish-mash of which bits are
supposed to be per-syscall and which aren't.
* New syscalls dealt with this in several ways:
- Some syscalls (like renameat2(2), move_mount(2), fsopen(2), and
fspick(2)) created their separate own flag spaces that have no
overlap with the AT_* flags. Most of these ended up allocating
their bits sequentually.
In the case of move_mount(2) and fspick(2), several flags have
identical meanings to AT_* flags but were allocated in their own
flag space.
This makes sense for syscalls that will never share AT_* flags, but
for some syscalls this leads to duplication with AT_* flags in a
way that could cause confusion (if renameat2(2) grew a
RENAME_EMPTY_PATH it seems likely that users could mistake it for
AT_EMPTY_PATH since it is an *at(2) syscall).
- Some syscalls unfortunately ended up both creating their own flag
space while also using bits from other flag spaces. The most
obvious example is open_tree(2), where the standard usage ends up
using flags from *THREE* separate flag spaces:
open_tree(AT_FDCWD, "/foo", OPEN_TREE_CLONE|O_CLOEXEC|AT_RECURSIVE);
(Note that O_CLOEXEC is also platform-specific, so several future
OPEN_TREE_* bits are also made unusable in one fell swoop.)
It's not entirely clear to me what the "right" choice is for new
syscalls. Just saying that all future VFS syscalls should use AT_* flags
doesn't seem practical. openat2(2) has RESOLVE_* flags (many of which
don't make much sense to burn generic AT_* flags for) and move_mount(2)
has separate AT_*-like flags for both the source and target so separate
flags are needed anyway (though it seems possible that renameat2(2)
could grow *_EMPTY_PATH flags at some point, and it's a bit of a shame
they can't be reused).
But at least for syscalls that _do_ choose to use AT_* flags, we should
explicitly state the policy that 0x2ff is currently intended for
per-syscall flags and that new flags should err on the side of
overlapping with existing flag bits (so we can extend the scope of
generic flags in the future if necessary).
And add AT_* aliases for the RENAME_* flags to further cement that
renameat2(2) is an *at(2) flag, just with its own per-syscall flags.
Suggested-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Link: https://lore.kernel.org/r/20240828-exportfs-u64-mount-id-v3-1-10c2c4c16708@cyphar.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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This also refreshes the -rc1 based branch to -rc5.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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There is only a single caller of this function, and that's in
drivers/pwm/core.c itself. So don't export the function.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240712171821.1470833-2-u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
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The hashed pointer isn't useful to identify the pwm device. Instead
store and emit chipid and hwpwm.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240705211452.1157967-2-u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
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Remove NETFS_COPY_TO_CACHE as it isn't used anymore.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/20240814203850.2240469-10-dhowells@redhat.com/ # v2
Signed-off-by: Christian Brauner <brauner@kernel.org>
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