Move the xtal-clk node to restore alphabetical ordering.
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260513-add-kvim4-sysled-v2-2-3ec9779e8875@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Enable and configure the three MMC controllers for the Khadas VIM4 board:
- sd_emmc_a: SDIO interface for the BCM43752 Wi-Fi module
- sd_emmc_b: SD card slot
- sd_emmc_c: eMMC storage
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Link: https://patch.msgid.link/20260326-add-emmc-t7-vim4-v5-9-d3f182b48e9d@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Add the SDIO power sequence node using mmc-pwrseq-simple and a
32.768kHz PWM-based clock required by the Wi-Fi module.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Link: https://patch.msgid.link/20260326-add-emmc-t7-vim4-v5-7-d3f182b48e9d@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Add device tree nodes for the seven PWM controllers available
on the Amlogic T7 SoC, using amlogic,meson-s4-pwm as fallback compatible.
All nodes are disabled by default and should be
enabled in the board-specific DTS file.
Co-developed-by: Nick Xie <nick@khadas.com>
Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Link: https://patch.msgid.link/20260326-add-emmc-t7-vim4-v5-5-d3f182b48e9d@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Add device tree nodes for the three MMC controllers available
on the Amlogic T7 SoC, using amlogic,meson-axg-mmc as fallback compatible.
All nodes are disabled by default and should be
enabled in the board-specific DTS file.
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260326-add-emmc-t7-vim4-v5-3-d3f182b48e9d@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
The Khadas VIM1S board has an onboard IR receiver.
Configure the default keymap to "rc-khadas" to support the official
Khadas IR remote control.
Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260327093016.722095-4-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
The Khadas VIM1S board has an on-board Haoyu Micro HYM8563 Real Time
Clock (RTC) connected to the I2C1 bus.
Enable the I2C1 controller and add the RTC child node to support
hardware clock persistence.
Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260327093016.722095-3-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Add the Virtual RTC (VRTC) controller node to the Meson S4 SoC dtsi.
Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260327093016.722095-2-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Enable the SARADC controller and add the adc-keys node to support
the Function key found on the Khadas VIM1S board.
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Nick Xie <nick@khadas.com>
Link: https://patch.msgid.link/20260325070618.81955-5-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Add the SARADC (Successive Approximation Register ADC) controller
node to the Meson S4 SoC dtsi.
It uses the S4-specific compatible string with a fallback to the
G12A generation, as there are no known hardware differences.
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Nick Xie <nick@khadas.com>
Link: https://patch.msgid.link/20260325070618.81955-4-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Add voltage regulator nodes describing the VIM4 power tree,
required by peripheral nodes such as the SD card controller.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Link: https://patch.msgid.link/20260326-add-emmc-t7-vim4-v5-6-d3f182b48e9d@aliel.fr
[narmstrong: squashed "Remove invalid property fix" from Ronald]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
These pinctrl nodes are required by the PWM drivers to configure
pin muxing at runtime.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Link: https://patch.msgid.link/20260326-add-emmc-t7-vim4-v5-4-d3f182b48e9d@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
These pinctrl nodes are required by the eMMC, SD card and SDIO drivers
to configure pin muxing at runtime.
- eMMC: control, 4-bit/8-bit data, data strobe and clock gate pins
- SD card: data, clock, command and clock gate pins
- SDIO: data, clock, command and clock gate pins
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260326-add-emmc-t7-vim4-v5-1-d3f182b48e9d@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Add the gpio-keys-polled node to support the Power button found on the
Khadas VIM1S board. The button is connected to the GPIOD_8 pin.
Use polled mode instead of gpio-keys because the GPIO interrupt
controller support for Meson S4 SoC is not yet available upstream.
Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://patch.msgid.link/20260228063750.701887-5-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
The Khadas VIM1S board features a white LED connected to the PWM_G
controller (PWM channel 0).
Enable the PWM_G controller and add the pwm-leds node to support
using this LED as a heartbeat indicator.
Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://patch.msgid.link/20260228063750.701887-4-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
The Khadas VIM1S board uses the Ampak AP6256 Wi-Fi/Bluetooth module.
The Bluetooth controller is connected via UART_A and requires the
external 32k clock (LPO).
Enable the UART_A node and add the bluetooth child node to support it.
Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://patch.msgid.link/20260228063750.701887-3-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Add the UART_A node and its related pinctrl definitions to the
Meson S4 SoC dtsi.
The pinctrl groups are split into basic tx/rx and flow control (cts/rts)
to allow board-level flexibility.
This interface is typically used for Bluetooth communication on
boards like the Khadas VIM1S.
Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://patch.msgid.link/20260228063750.701887-2-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
The Phicomm N1 uses a CY43455 (BCM43438) module with its Bluetooth
interface connected to uart_A.
Add the required device tree node to enable proper functionality.
Signed-off-by: Jun Yan <jerrysteve1101@gmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260213073810.552341-1-jerrysteve1101@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Add missing L1 data and instruction cache parameters to the CPU node 0
for the Cortex-A53 caches on the Meson AXG SoC.
Fixes: 3b6ad2a433 ("arm64: dts: amlogic: Add cache information to the Amlogic AXG SoCS")
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Link: https://patch.msgid.link/20260219103548.18392-1-linux.amoon@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Update the model property to "Khadas VIM4" to match the official
product branding and maintain consistency with other Khadas boards
(e.g., VIM1, VIM2, VIM3) in the kernel tree.
Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260306030756.2421841-1-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This patch aims to fix the GIC register ranges for Amlogic T7 SoC family.
- Context
Kernel log shows a warning about GIC
[ 0.000000] GIC: GICv2 detected, but range too small and irqchip.gicv2_force_probe not set
Using cat /proc/interrupts command shows GIC as GIC-0
Adding some peripherals sometimes causes hangs on interrupts.
- According to the GIC-400 ARM doc, the memory map is like:
0x1000-0x1FFF Distributor
0x2000-0x3FFF CPU interfaces
0x4000-0x5FFF Virtual interface control block
0x6000-0x7FFF Virtual CPU interfaces
- Identify GIC model from distributor register
Offset | Name | Type | Reset
0x008 | GICD_IIDR | RO | 0x0200143B
kvim4# md.l 0xFFF01008 1
fff01008: 0200143b
- Identify CPU interface from CPU interface register
Offset | Name | Type | Reset
0x00FC | GICC_IIDR | RO | 0x0202143B
kvim4# md.l 0xFFF020FC 1
fff020fc: 0202143b
- Virtual interface control register check
Offset | Name | Type | Reset
0x004 | GICH_VTR | RO | 0x90000003
kvim4# md.l 0xFFF04004 1
fff04004: 90000003
- Virtual CPU interfaces check
Offset | Name | Type | Reset
0x00FC | GICV_IIDR | RO | 0x0202143B
kvim4# md.l 0xFFF060FC 1
fff060fc: 0202143b
- After this patch there is no warning anymore.
GICv2 is correctly identified.
[ 0.000000] GIC: Using split EOI/Deactivate mode
Using cat /proc/interrupts command shows GIC as GICv2
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260305-fix-amlt7-gic-dts-v1-1-5944415c74bf@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
The Khadas VIM4 features 8GB of LPDDR4X RAM. The previous memory node
mapped a single incorrect region. This caused the kernel to map MMIO
and secure firmware (ATF/TrustZone) memory holes as standard RAM,
leading to an Asynchronous SError Interrupt during early boot
(paging_init) when the kernel attempted to clear those pages.
Fix this by splitting the 8GB memory layout into three separate
regions to properly avoid the memory holes (e.g., 0xe0000000 -
0xffffffff):
- 3.5GB @ 0x000000000
- 3.5GB @ 0x100000000
- 1.0GB @ 0x200000000
Signed-off-by: Nick Xie <nick@khadas.com>
Suggested-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Link: https://patch.msgid.link/20260319023446.3422695-1-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Unlike older GIC variants, the GICv3 DT bindings do not support
specifying a CPU mask in PPI interrupt specifiers. Drop the masks.
While at it, replace the magic number for IRQ_TYPE_LEVEL_HIGH by its
symbolic definition.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/f9c6eddebebcd2e128edd2dbc51706e23589f9e8.1772643434.git.geert+renesas@glider.be
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
- Fix incomplete activation of multiple inactive works when unplugging a
pool_workqueue, where the pending_pwqs list wasn't being updated for
subsequent works.
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Merge tag 'wq-for-7.0-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue fix from Tejun Heo:
"This is a fix for a stall which triggers on ordered workqueues when
there are multiple inactive work items during workqueue property
changes through sysfs, which doesn't happen that frequently.
While really late, the fix is very low risk as it just repeats an
operation which is already being performed:
- Fix incomplete activation of multiple inactive works when
unplugging a pool_workqueue, where the pending_pwqs list
wasn't being updated for subsequent works"
* tag 'wq-for-7.0-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Add pool_workqueue to pending_pwqs list when unplugging multiple inactive works
- Invert the inverted fastpath decision in check_tick_dependency(), which
prevents NOHZ full to stop the tick. That's a regression introduced in
the 7.0 merge window.
- Prevent a unpriviledged DoS in the clockevents code, where user space
can starve the timer interrupt by arming a timerfd or posix interval
timer in a tight loop with an absolute expiry time in the past. The
fix turned out to be incomplete and was was amended yesterday to make
it work on some 20 years old AMD machines as well. All issues with it
have been confirmed to be resolved by various reporters.
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Merge tag 'timers-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"Two fixes for the time/timers subsystem:
- Invert the inverted fastpath decision in check_tick_dependency(),
which prevents NOHZ full to stop the tick. That's a regression
introduced in the 7.0 merge window.
- Prevent a unpriviledged DoS in the clockevents code, where user
space can starve the timer interrupt by arming a timerfd or posix
interval timer in a tight loop with an absolute expiry time in the
past. The fix turned out to be incomplete and was was amended
yesterday to make it work on some 20 years old AMD machines as
well. All issues with it have been confirmed to be resolved by
various reporters"
* tag 'timers-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clockevents: Prevent timer interrupt starvation
tick/nohz: Fix inverted return value in check_tick_dependency() fast path
The check for the minimum receive buffer size did not take the
tag size into account during decryption. Fix this by adding the
required extra length.
Reported-by: syzbot+aa11561819dc42ebbc7c@syzkaller.appspotmail.com
Reported-by: Daniel Pouzzner <douzzer@mega.nu>
Fixes: d887c52d6a ("crypto: algif_aead - overhaul memory management")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Leo reports an out-of-bounds access when parsing a certificate with
empty Basic Constraints or Key Usage extension because the first byte of
the extension is read before checking its length. Fix it.
The bug can be triggered by an unprivileged user by submitting a
specially crafted certificate to the kernel through the keyrings(7) API.
Leo has demonstrated this with a proof-of-concept program responsibly
disclosed off-list.
Fixes: 30eae2b037 ("KEYS: X.509: Parse Basic Constraints for CA")
Fixes: 567671281a ("KEYS: X.509: Parse Key Usage")
Reported-by: Leo Lin <leo@depthfirst.com> # off-list
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Ignat Korchagin <ignat@linux.win>
Cc: stable@vger.kernel.org # v6.4+
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
When page reassignment was added to af_alg_pull_tsgl the original
loop wasn't updated so it may try to reassign one more page than
necessary.
Add the check to the reassignment so that this does not happen.
Also update the comment which still refers to the obsolete offset
argument.
Reported-by: syzbot+d23888375c2737c17ba5@syzkaller.appspotmail.com
Fixes: e870456d8e ("crypto: algif_skcipher - overhaul memory management")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
imx: set dma_slave_config to 0 and avoid uninitialized fields
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Merge tag 'i2c-for-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
- imx: set dma_slave_config to 0 and avoid uninitialized fields
* tag 'i2c-for-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: imx: zero-initialize dma_slave_config for eDMA
A couple of changes here, one update to MAINTAINERS for the AMD
controller and a chnage from Pei Xiao which in spite of the changelog is
actually a fix - previously the zynq-qspi driver leaked a clock enable
for every flash operation it did which isn't good, these extra enables
were removed when doing the enable cleanup which are probably a good
idea anyway.
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Merge tag 'spi-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A couple of changes here, one update to MAINTAINERS for the AMD
controller and a chnage from Pei Xiao which in spite of the changelog
is actually a fix - previously the zynq-qspi driver leaked a clock
enable for every flash operation it did which isn't good, these extra
enables were removed when doing the enable cleanup which are probably
a good idea anyway"
* tag 'spi-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
MAINTAINERS: Update AMD SPI driver maintainers
spi: zynq-qspi: Simplify clock handling with devm_clk_get_enabled()
One last fix for v7.0, the BD72720 incorrectly described which DCDC is
tied to the LDO for it's LDON-HEAD mode which automates using the DCDC
to more efficiently drop a supply for delivery via the LDO.
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Merge tag 'regulator-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"One last fix for v7.0, the BD72720 incorrectly described which DCDC is
tied to the LDO for its LDON-HEAD mode which automates using the DCDC
to more efficiently drop a supply for delivery via the LDO"
* tag 'regulator-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: bd71828-regulator.c: Fix LDON-HEAD mode
* KVM: s390: vsie: Fix races with partial gmap invalidations
x86:
* KVM: x86: Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"s390:
- vsie: Fix races with partial gmap invalidations
x86:
- Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: s390: vsie: Fix races with partial gmap invalidations
KVM: x86: Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs
- tracing/probe: reject non-closed empty immediate strings
Fixed a buffer index underflow bug that occurred when passing an
non-closed empty immediate string to the probe event.
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Merge tag 'probes-fixes-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing probe fix from Masami Hiramatsu:
"Reject non-closed empty immediate strings
Fix a buffer index underflow bug that occurred when passing an
non-closed empty immediate string to the probe event"
* tag 'probes-fixes-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/probe: reject non-closed empty immediate strings
Here is a single USB fix for a reported regression in a recent USB typec
patch for 7.0-final. Sorry for the late submission, but it does fix a
problem that people have been seeing with 7.0-rc7 and the stable kernels
(due to a backported fix from there.)
This has been in linux-next this week with no reported issues, and the
reporter (Takashi), has said it resolves the problem they were seeing.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fix from Greg KH:
"Here is a single USB fix for a reported regression in a recent USB
typec patch for 7.0-final. Sorry for the late submission, but it does
fix a problem that people have been seeing with 7.0-rc7 and the stable
kernels (due to a backported fix from there.)
This has been in linux-next this week with no reported issues, and the
reporter (Takashi), has said it resolves the problem they were seeing"
* tag 'usb-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: ucsi: skip connector validation before init
- a fix for circular locking dependency in uinput
- a fix for potential corruption of uinput event queue
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Merge tag 'input-for-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"Two fixes for force feedback handling in uinput driver:
- fix circular locking dependency in uinput
- fix potential corruption of uinput event queue"
* tag 'input-for-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: uinput - take event lock when submitting FF request "event"
Input: uinput - fix circular locking dependency with ff-core
Fix one more gmap-rewrite issue: races with partial gmap invalidations.
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Merge tag 'kvm-s390-master-7.0-4' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: One very last second fix
Fix one more gmap-rewrite issue: races with partial gmap invalidations.
Declare flexible arrays in uAPI structures using __DECLARE_FLEX_ARRAY() so
that KVM's uAPI headers can be included in C++ projects.
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Merge tag 'kvm-x86-fixes-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM x86 fixes for 7.1
Declare flexible arrays in uAPI structures using __DECLARE_FLEX_ARRAY() so
that KVM's uAPI headers can be included in C++ projects.
Before v7.0 is released, fix a few issues with the CFI patchset,
merged earlier in v7.0-rc, that primarily affect interfaces to
non-kernel code:
- Improve the prctl() interface for per-task indirect branch landing
pad control to expand abbreviations and to resemble the speculation
control prctl() interface
- Expand the "LP" and "SS" abbreviations in the ptrace uapi header
file to "branch landing pad" and "shadow stack", to improve
readability
- Fix a typo in a CFI-related macro name in the ptrace uapi header
file
- Ensure that the indirect branch tracking state and shadow stack
state are unlocked immediately after an exec() on the new task so
that libc subsequently can control it
- While working in this area, clean up the kernel-internal,
cross-architecture prctl() function names by expanding the
abbreviations mentioned above
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Merge tag 'riscv-for-linus-v7.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
"Before v7.0 is released, fix a few issues with the CFI patchset,
merged earlier in v7.0-rc, that primarily affect interfaces to
non-kernel code:
- Improve the prctl() interface for per-task indirect branch landing
pad control to expand abbreviations and to resemble the speculation
control prctl() interface
- Expand the "LP" and "SS" abbreviations in the ptrace uapi header
file to "branch landing pad" and "shadow stack", to improve
readability
- Fix a typo in a CFI-related macro name in the ptrace uapi header
file
- Ensure that the indirect branch tracking state and shadow stack
state are unlocked immediately after an exec() on the new task so
that libc subsequently can control it
- While working in this area, clean up the kernel-internal,
cross-architecture prctl() function names by expanding the
abbreviations mentioned above"
* tag 'riscv-for-linus-v7.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
prctl: cfi: change the branch landing pad prctl()s to be more descriptive
riscv: ptrace: cfi: expand "SS" references to "shadow stack" in uapi headers
prctl: rename branch landing pad implementation functions to be more explicit
riscv: ptrace: expand "LP" references to "branch landing pads" in uapi headers
riscv: cfi: clear CFI lock status in start_thread()
riscv: ptrace: cfi: fix "PRACE" typo in uapi header
xe:
- Fix HW engine idleness unit conversion
i915:
- Drop check for changed VM in EXECBUF
- Fix refcount underflow race in intel_engine_park_heartbeat
- Do not use pipe_src as borders for SU area in PSR
vc4:
- runtime pm reference fix
- memory leak fixes
- locking fix
ethosu:
- make ARM only
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Merge tag 'drm-fixes-2026-04-11' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Last set of fixes, a few vc4, and i915, one xe and one ethosu Kconfig
fix.
xe:
- Fix HW engine idleness unit conversion
i915:
- Drop check for changed VM in EXECBUF
- Fix refcount underflow race in intel_engine_park_heartbeat
- Do not use pipe_src as borders for SU area in PSR
vc4:
- runtime pm reference fix
- memory leak fixes
- locking fix
ethosu:
- make ARM only"
* tag 'drm-fixes-2026-04-11' of https://gitlab.freedesktop.org/drm/kernel:
drm/i915/gem: Drop check for changed VM in EXECBUF
drm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat
drm/xe: Fix bug in idledly unit conversion
drm/i915/psr: Do not use pipe_src as borders for SU area
accel: ethosu: Add hardware dependency hint
drm/vc4: Protect madv read in vc4_gem_object_mmap() with madv_lock
drm/vc4: Fix a memory leak in hang state error path
drm/vc4: Fix memory leak of BO array in hang state
drm/vc4: Release runtime PM reference after binding V3D
- Drop check for changed VM in EXECBUF
- Fix refcount underflow race in intel_engine_park_heartbeat
- Do not use pipe_src as borders for SU area in PSR
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patch.msgid.link/add6fPHRC7Bc8Uri@jlahtine-mobl
Calvin reported an odd NMI watchdog lockup which claims that the CPU locked
up in user space. He provided a reproducer, which sets up a timerfd based
timer and then rearms it in a loop with an absolute expiry time of 1ns.
As the expiry time is in the past, the timer ends up as the first expiring
timer in the per CPU hrtimer base and the clockevent device is programmed
with the minimum delta value. If the machine is fast enough, this ends up
in a endless loop of programming the delta value to the minimum value
defined by the clock event device, before the timer interrupt can fire,
which starves the interrupt and consequently triggers the lockup detector
because the hrtimer callback of the lockup mechanism is never invoked.
As a first step to prevent this, avoid reprogramming the clock event device
when:
- a forced minimum delta event is pending
- the new expiry delta is less then or equal to the minimum delta
Thanks to Calvin for providing the reproducer and to Borislav for testing
and providing data from his Zen5 machine.
The problem is not limited to Zen5, but depending on the underlying
clock event device (e.g. TSC deadline timer on Intel) and the CPU speed
not necessarily observable.
This change serves only as the last resort and further changes will be made
to prevent this scenario earlier in the call chain as far as possible.
[ tglx: Updated to restore the old behaviour vs. !force and delta <= 0 and
fixed up the tick-broadcast handlers as pointed out by Borislav ]
Fixes: d316c57ff6 ("[PATCH] clockevents: add core functionality")
Reported-by: Calvin Owens <calvin@wbinvd.org>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Calvin Owens <calvin@wbinvd.org>
Tested-by: Borislav Petkov <bp@alien8.de>
Link: https://lore.kernel.org/lkml/acMe-QZUel-bBYUh@mozart.vkv.me/
Link: https://patch.msgid.link/20260407083247.562657657@kernel.org
