After a recent change that started using FIELD_GET() in tps6594-core.c,
there is an error when bitfield.h is not implicitly included, such as
when building allmodconfig for ARCH=hexagon:
drivers/mfd/tps6594-core.c:767:7: error: call to undeclared function 'FIELD_GET'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
767 | if (FIELD_GET(TPS65224_MASK_EN_PB_VSENSE_CONFIG, pwr_on) == TPS65224_EN_SEL_PB ||
| ^
Explicitly include bitfield.h to resolve the errors.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: d766ca01c2 ("mfd: tps6594: Add power button functionality")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Michael Walle <mwalle@kernel.org>
Closes: https://lore.kernel.org/oe-kbuild-all/202509032356.LGa5hygM-lkp@intel.com/
Link: https://lore.kernel.org/r/20250904-mfd-tps6594-core-fix-bitfield-h-v1-1-5d0f00cfe58f@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
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Merge tag 'for-6.17-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix delayed inode tracking in xarray, eviction can race with
insertion and leave behind a disconnected inode
- on systems with large page (64K) and small block size (4K) fix
compression read that can return partially filled folio
- slightly relax compression option format for backward compatibility,
allow to specify level for LZO although there's only one
- fix simple quota accounting of compressed extents
- validate minimum device size in 'device add'
- update maintainers' entry
* tag 'for-6.17-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: don't allow adding block device of less than 1 MB
MAINTAINERS: update btrfs entry
btrfs: fix subvolume deletion lockup caused by inodes xarray race
btrfs: fix corruption reading compressed range when block size is smaller than page size
btrfs: accept and ignore compression level for lzo
btrfs: fix squota compressed stats leak
Rectify the reference of i915 to Xe in a comment.
v2: Cosmetic changes. (Karthik)
v3: Rephrased the commit message. (Karthik)
Signed-off-by: Varun Gupta <varun.gupta@intel.com>
Reviewed-by: Karthik Poosa <karthik.poosa@intel.com>
Link: https://lore.kernel.org/r/20250911111712.811524-1-varun.gupta@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Add support for the boost regulator found in the Texas Instruments
BQ25703. The boost regulator is capable of outputting between 4.48
and 20.8 volts and between 0 and 6.35 amps.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250904160530.66178-5-macroalpha82@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
Currently, x86, Riscv and Loongarch use the generic entry code, which
makes maintainer's work easier and code more elegant. Start converting
arm64 to use the generic entry infrastructure from kernel/entry/* by
switching it to generic IRQ entry, which removes 100+ lines of duplicate
code. arm64 will completely switch to generic entry in a later series.
The changes are below:
- Remove *enter_from/exit_to_kernel_mode(), and wrap with generic
irqentry_enter/exit() as their code and functionality are almost
identical.
- Define ARCH_EXIT_TO_USER_MODE_WORK and implement
arch_exit_to_user_mode_work() to check arm64-specific thread flags
"_TIF_MTE_ASYNC_FAULT" and "_TIF_FOREIGN_FPSTATE".
So also remove *enter_from/exit_to_user_mode(), and wrap with
generic enter_from/exit_to_user_mode() because they are
exactly the same.
- Remove arm64_enter/exit_nmi() and use generic irqentry_nmi_enter/exit()
because they're exactly the same, so the temporary arm64 version
irqentry_state can also be removed.
- Remove PREEMPT_DYNAMIC code, as generic irqentry_exit_cond_resched()
has the same functionality.
- Implement arch_irqentry_exit_need_resched() with
arm64_preempt_schedule_irq() for arm64 which will allow arm64 to do
its architecture specific checks.
Tested-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Suggested-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
The arm64 entry code only preempts a kernel context upon a return from
a regular IRQ exception. The generic entry code may preempt a kernel
context for any exception return where irqentry_exit() is used, and so
may preempt other exceptions such as faults.
In preparation for moving arm64 over to the generic entry code, align
arm64 with the generic behaviour by calling
arm64_preempt_schedule_irq() from exit_to_kernel_mode(). To make this
possible, arm64_preempt_schedule_irq()
and dynamic/raw_irqentry_exit_cond_resched() are moved earlier in
the file, with no changes.
As Mark pointed out, this change will have the following 2 key impact:
- " We'll preempt even without taking a "real" interrupt. That
shouldn't result in preemption that wasn't possible before,
but it does change the probability of preempting at certain points,
and might have a performance impact, so probably warrants a
benchmark."
- " We will not preempt when taking interrupts from a region of kernel
code where IRQs are enabled but RCU is not watching, matching the
behaviour of the generic entry code.
This has the potential to introduce livelock if we can ever have a
screaming interrupt in such a region, so we'll need to go figure out
whether that's actually a problem.
Having this as a separate patch will make it easier to test/bisect
for that specifically."
Reviewed-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
To align the structure of the code with irqentry_exit_cond_resched()
from the generic entry code, hoist the need_irq_preemption()
and IS_ENABLED() check earlier. And different preemption check functions
are defined based on whether dynamic preemption is enabled.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Compared to the generic entry code, ARM64 does additional checks
when deciding to reschedule on return from interrupt. So introduce
arch_irqentry_exit_need_resched() in the need_resched()
condition of the generic raw_irqentry_exit_cond_resched(), with
a NOP default. This will allow ARM64 to implement the architecture
specific version for switching over to the generic entry code.
Suggested-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Suggested-by: Kevin Brodsky <kevin.brodsky@arm.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
The generic entry code uses preempt_count() and need_resched() helpers to
check if it should do preempt_schedule_irq(). Currently, arm64 use its own
check logic, that is "READ_ONCE(current_thread_info()->preempt_count == 0",
which is equivalent to "preempt_count() == 0 && need_resched()".
In preparation for moving arm64 over to the generic entry code, use
these helpers to replace arm64's own code and move it ahead.
No functional changes.
Reviewed-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
The generic entry code has the form:
| raw_irqentry_exit_cond_resched()
| {
| if (!preempt_count()) {
| ...
| if (need_resched())
| preempt_schedule_irq();
| }
| }
In preparation for moving arm64 over to the generic entry code, align
the structure of the arm64 code with raw_irqentry_exit_cond_resched() from
the generic entry code.
Reviewed-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
The generic entry code uses irqentry_state_t to track lockdep and RCU
state across exception entry and return. For historical reasons, arm64
embeds similar fields within its pt_regs structure.
In preparation for moving arm64 over to the generic entry code, pull
these fields out of arm64's pt_regs, and use a separate structure,
matching the style of the generic entry code.
No functional changes.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
The generic entry code expects architecture code to provide
regs_irqs_disabled(regs) function, but arm64 does not have this and
provides interrupts_enabled(regs), which has the opposite polarity.
In preparation for moving arm64 over to the generic entry code,
relace arm64's interrupts_enabled() with regs_irqs_disabled() and
update its callers under arch/arm64.
For the moment, a definition of interrupts_enabled() is provided for
the GICv3 driver. Once arch/arm implement regs_irqs_disabled(), this
can be removed.
Delete the fast_interrupts_enabled() macro as it is unused and we
don't want any new users to show up.
No functional changes.
Reviewed-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Add support for the charger function of the BQ257XX. The device is
capable of charging batteries with a layout of 1 to 4 cells in
series.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20250904160530.66178-4-macroalpha82@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
The Texas Instruments BQ25703A is an integrated charger manager and
boost converter.
The MFD driver initializes the device for the regulator driver
and power supply driver.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20250904160530.66178-3-macroalpha82@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
Document the Texas instruments BQ25703A series of charger managers/
buck/boost regulators.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250904160530.66178-2-macroalpha82@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:
"A number of fixes accumulated due to summer vacations
- Fix out-of-bounds dynptr write in bpf_crypto_crypt() kfunc which
was misidentified as a security issue (Daniel Borkmann)
- Update the list of BPF selftests maintainers (Eduard Zingerman)
- Fix selftests warnings with icecc compiler (Ilya Leoshkevich)
- Disable XDP/cpumap direct return optimization (Jesper Dangaard
Brouer)
- Fix unexpected get_helper_proto() result in unusual configuration
BPF_SYSCALL=y and BPF_EVENTS=n (Jiri Olsa)
- Allow fallback to interpreter when JIT support is limited (KaFai
Wan)
- Fix rqspinlock and choose trylock fallback for NMI waiters. Pick
the simplest fix. More involved fix is targeted bpf-next (Kumar
Kartikeya Dwivedi)
- Fix cleanup when tcp_bpf_send_verdict() fails to allocate
psock->cork (Kuniyuki Iwashima)
- Disallow bpf_timer in PREEMPT_RT for now. Proper solution is being
discussed for bpf-next. (Leon Hwang)
- Fix XSK cq descriptor production (Maciej Fijalkowski)
- Tell memcg to use allow_spinning=false path in bpf_timer_init() to
avoid lockup in cgroup_file_notify() (Peilin Ye)
- Fix bpf_strnstr() to handle suffix match cases (Rong Tao)"
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
selftests/bpf: Skip timer cases when bpf_timer is not supported
bpf: Reject bpf_timer for PREEMPT_RT
tcp_bpf: Call sk_msg_free() when tcp_bpf_send_verdict() fails to allocate psock->cork.
bpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()
bpf: Allow fall back to interpreter for programs with stack size <= 512
rqspinlock: Choose trylock fallback for NMI waiters
xsk: Fix immature cq descriptor production
bpf: Update the list of BPF selftests maintainers
selftests/bpf: Add tests for bpf_strnstr
selftests/bpf: Fix "expression result unused" warnings with icecc
bpf: Fix bpf_strnstr() to handle suffix match cases better
selftests/bpf: Extend crypto_sanity selftest with invalid dst buffer
bpf: Fix out-of-bounds dynptr write in bpf_crypto_crypt
bpf: Check the helper function is valid in get_helper_proto
bpf, cpumap: Disable page_pool direct xdp_return need larger scope
This is to make it easier to debug issues with AV software, which time and
again deadlocks with no indication of where the issue comes from, and the
kernel being blamed for the deadlock. Then we need to analyze dumps to
prove that the kernel is not in fact at fault.
The deadlock comes from recursion: handling the event triggers another
permission event, in some roundabout way, obviously, otherwise it would
have been found in testing.
With this patch a warning is printed when permission event is received by
userspace but not answered for more than the timeout specified in
/proc/sys/fs/fanotify/watchdog_timeout. The watchdog can be turned off by
setting the timeout to zero (which is the default).
The timeout is very coarse (T <= t < 2T) but I guess it's good enough for
the purpose.
Overhead should be minimal.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Link: https://patch.msgid.link/20250909143053.112171-1-mszeredi@redhat.com
Signed-off-by: Jan Kara <jack@suse.cz>
The gen_sysreg.awk script processes the system register specification in
the sysreg text file to generate C macro definitions. The current script
will silently accept certain errors in the specification file, leading
to incorrect header generation.
For example, a Sysreg or SysregFields can be accidentally duplicated,
causing its macros to be emitted twice. An Enum can contain duplicate
values for different items, which is architecturally incorrect.
Add checks to catch these errors at build time. The script now tracks
all seen Sysreg and SysregFields definitions and checks for duplicates.
It also tracks values within each Enum block to ensure entries are
unique.
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Fuad Tabba <tabba@google.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
The `ID_AA64MMFR4_EL1.EIESB` field, is an unsigned enumeration, but was
incorrectly defined as a `SignedEnum` when introduced in commit
cfc680bb04 ("arm64: sysreg: Add layout for ID_AA64MMFR4_EL1"). This is
corrected to `UnsignedEnum`.
Conversely, the `ID_AA64DFR0_EL1.DoubleLock` field, is a signed
enumeration, but was incorrectly defined as an `UnsignedEnum`. This is
corrected to `SignedEnum`, which wasn't correctly set when annotated as
such in commit ad16d4cf0b ("arm64/sysreg: Initial unsigned annotations
for ID registers").
Signed-off-by: Fuad Tabba <tabba@google.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Fix the value of ID_PFR1_EL1.Security NSACR_RFR to be 0b0010, as per
DDI0601/2025-06, which wasn't correctly set when introduced in commit
1224308075 ("arm64/sysreg: Convert ID_PFR1_EL1 to automatic generation").
While at it, remove redundant definitions of CPACR_EL12 and
RCWSMASK_EL1 and fix some typos.
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Fuad Tabba <tabba@google.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
tcp reject code won't reply to a tcp reset.
But the icmp reject 'netdev' family versions will reply to icmp
dst-unreach errors, unlike icmp_send() and icmp6_send() which are used
by the inet family implementation (and internally by the REJECT target).
Check for the icmp(6) type and do not respond if its an unreachable error.
Without this, something like 'ip protocol icmp reject', when used
in a netdev chain attached to 'lo', cause a packet loop.
Same for two hosts that both use such a rule: each error packet
will be replied to.
Such situation persist until the (bogus) rule is amended to ratelimit or
checks the icmp type before the reject statement.
As the inet versions don't do this make the netdev ones follow along.
Signed-off-by: Florian Westphal <fw@strlen.de>
KCSAN reported a data-race on the `ipvs->enable` flag, which is
written in the control path and read concurrently from many other
contexts.
Following a suggestion by Julian, this patch fixes the race by
converting all accesses to use `WRITE_ONCE()/READ_ONCE()`.
This lightweight approach ensures atomic access and acts as a
compiler barrier, preventing unsafe optimizations where the flag
is checked in loops (e.g., in ip_vs_est.c).
Additionally, the `enable` checks in the fast-path hooks
(`ip_vs_in_hook`, `ip_vs_out_hook`, `ip_vs_forward_icmp`) are
removed. These are unnecessary since commit 857ca89711
("ipvs: register hooks only with services"). The `enable=0`
condition they check for can only occur in two rare and non-fatal
scenarios: 1) after hooks are registered but before the flag is set,
and 2) after hooks are unregistered on cleanup_net. In the worst
case, a single packet might be mishandled (e.g., dropped), which
does not lead to a system crash or data corruption. Adding a check
in the performance-critical fast-path to handle this harmless
condition is not a worthwhile trade-off.
Fixes: 857ca89711 ("ipvs: register hooks only with services")
Reported-by: syzbot+1651b5234028c294c339@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=1651b5234028c294c339
Suggested-by: Julian Anastasov <ja@ssi.bg>
Link: https://lore.kernel.org/lvs-devel/2189fc62-e51e-78c9-d1de-d35b8e3657e3@ssi.bg/
Signed-off-by: Zhang Tengfei <zhtfdev@gmail.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Florian Westphal <fw@strlen.de>
Expose the input bridge interface ethernet address so it can be used to
redirect the packet to the receiving physical device for processing.
Tested with nft command line tool.
table bridge nat {
chain PREROUTING {
type filter hook prerouting priority 0; policy accept;
ether daddr de:ad:00:00:be:ef meta pkttype set host ether daddr set meta ibrhwdr accept
}
}
Joint work with Pablo Neira.
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Since the ahash_region() macro was redefined to calculate the region
index solely from HTABLE_REGION_BITS, the htable_bits parameter became
unused.
Remove the unused htable_bits argument and its call sites, simplifying
the code without changing semantics.
Fixes: 8478a729c0 ("netfilter: ipset: fix region locking in hash types")
Signed-off-by: Zhen Ni <zhen.ni@easystack.cn>
Reviewed-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
The gt24c256c is another 24c256 compatible EEPROM, and does not
follow the generic name matching, so add a separate compatible for it.
This ensures accurate device-tree representation and enables proper
kernel support for systems using this part.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wasim Nazir <wasim.nazir@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250908-lemans-evk-bu-v4-5-5c319c696a7d@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The SPDIF receiver/transmitter can be connected to a DAI device via OF
graph port. It is already in use and supported.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250910233615.775397-2-robh@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
The Texas Instruments PCM1754[1] is a simple stereo DAC without any
digital
management interface but soft mute, PCM input format and 44.1 kHz
digital de-emphasis can be configured via strapping pins. Only soft mute
and PCM input format selection is currently exposed via optional GPIOs
in the driver.
[1]: https://www.ti.com/product/PCM1754
Signed-off-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Co-developed-by: Stefan Kerkmann <s.kerkmann@pengutronix.de>
Signed-off-by: Stefan Kerkmann <s.kerkmann@pengutronix.de>
Link: https://patch.msgid.link/20250910-v6-12-topic-pcm1754-v2-2-0917dbe73c65@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
The Texas Instruments PCM1754 is a simple stereo DAC without any digital
management interface but soft mute, PCM input format and 44.1 kHz
digital de-emphasis can be configured via strapping pins. Only soft mute
and PCM input format selection is currently exposed via optional GPIOs
in the driver.
Signed-off-by: Stefan Kerkmann <s.kerkmann@pengutronix.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250910-v6-12-topic-pcm1754-v2-1-0917dbe73c65@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
GuC has an interface to set a power profile for the SLPC algorithm.
Base mode is default and ensures a balanced performance, power_saving
mode has conservative up/down thresholds and is suitable for use with
apps that typically need to be power efficient. This will result in
lower GT frequencies, thus consuming lower power.
Selected power profile will be displayed in this format:
$ cat power_profile
[base] power_saving
$ echo power_saving > power_profile
$ cat power_profile
base [power_saving]
v2: Address review comments (Rodrigo)
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20250903232120.390190-1-vinay.belgaumkar@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Merge a hibernation regression fix and an fix related to energy model
management for 6.17-rc6
* pm-sleep:
PM: hibernate: Restrict GFP mask in hibernation_snapshot()
* pm-em:
PM: EM: Add function for registering a PD without capacity update
Add a Rust driver for ARM Mali CSF-based GPUs. It is a port of Panthor
and therefore exposes Panthor's uAPI and name to userspace, and the
product of a joint effort between Collabora, Arm and Google engineers.
The aim is to incrementally develop Tyr with the abstractions that are
currently available until it is consider to be in parity with Panthor
feature-wise.
The development of Tyr itself started in January, after a few failed
attempts of converting Panthor piecewise through a mix of Rust and C
code. There is a downstream branch that's much further ahead in terms of
capabilities than this initial patch.
The downstream code is capable of booting the MCU, doing sync VM_BINDS
through the work-in-progress GPUVM abstraction and also doing (trivial)
submits through Asahi's drm_scheduler and dma_fence abstractions. So
basically, most of what one would expect a modern GPU driver to do,
except for power management and some other very important adjacent
pieces. It is not at the point where submits can correctly deal with
dependencies, or at the point where it can rotate access to the GPU
hardware fairly through a software scheduler, but that is simply a
matter of writing more code.
This first patch, however, only implements a subset of the current
features available downstream, as the rest is not implementable without
pulling in even more abstractions. In particular, a lot of things depend
on properly mapping memory on a given VA range, which itself depends on
the GPUVM abstraction that is currently work-in-progress. For this
reason, we still cannot boot the MCU and thus, cannot do much for the
moment.
This constitutes a change in the overall strategy that we have been
using to develop Tyr so far. By submitting small parts of the driver
upstream iteratively, we aim to:
a) evolve together with Nova and rvkms, hopefully reducing regressions
due to upstream changes (that may break us because we were not there, in
the first place)
b) prove any work-in-progress abstractions by having them run on a real
driver and hardware and,
c) provide a reason to work on and review said abstractions by providing
a user, which would be tyr itself.
Despite its limited feature-set, we offer IGT tests. It is only tested
on the rk3588, so any other SoC is probably not going to work at all for
now.
The skeleton is basically taken from Nova and also
rust_platform_driver.rs.
Lastly, the name "Tyr" is inspired by Norse mythology, reflecting ARM's
tradition of naming their GPUs after Nordic mythological figures and
places.
Co-developed-by: Beata Michalska <beata.michalska@arm.com>
Signed-off-by: Beata Michalska <beata.michalska@arm.com>
Co-developed-by: Carsten Haitzler <carsten.haitzler@foss.arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@foss.arm.com>
Co-developed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://www.collabora.com/news-and-blog/news-and-events/introducing-tyr-a-new-rust-drm-driver.html
Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com>
Acked-by: Boris Brezillon <boris.brezillon@collabora.com>
[aliceryhl: minor Kconfig update on apply]
[aliceryhl: s/drm::device::/drm::/]
Link: https://lore.kernel.org/r/20250910-tyr-v3-1-dba3bc2ae623@collabora.com
Co-developed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
1. Correct missing interrupts in IMX 1-Wire Devicetree bindings.
2. Drop old, dead code from Matrox driver.
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Merge tag 'w1-drv-6.18' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/krzk/linux-w1 into char-misc-next
Krzysztof writes:
1-Wire bus drivers for v6.18
1. Correct missing interrupts in IMX 1-Wire Devicetree bindings.
2. Drop old, dead code from Matrox driver.
* tag 'w1-drv-6.18' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/krzk/linux-w1:
w1: matrox: Remove some deadcode in matrox_w1_remove()
dt-bindings: w1: imx: Add an entry for the interrupts property
mc13xxx_irq_ack() got deprecated and became dead code with commit
10f9edaeaa ("mfd: mc13xxx: Use regmap irq framework for interrupts").
It should be safe to remove it now.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input
Link: https://lore.kernel.org/r/20250811064358.1659-1-akurz@blala.de
Signed-off-by: Lee Jones <lee@kernel.org>
The recent changes to genpd makes a genpd OF provider that is powered-on at
initialization to stay powered-on, until the ->sync_state() callback is
invoked for it.
This may not happen at all, if we wait for a consumer device to be probed,
leading to wasting energy. There are ways to enforce the ->sync_state()
callback to be invoked, through sysfs or via the probe-defer-timeout, but
none of them in its current form are a good fit for rmobile-sysc PM
domains.
Let's therefore opt-out from this behaviour of genpd for now, by using the
GENPD_FLAG_NO_STAY_ON.
Link: https://lore.kernel.org/all/20250701114733.636510-1-ulf.hansson@linaro.org/
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: 0e789b491b ("pmdomain: core: Leave powered-on genpds on until sync_state")
Fixes: 13a4b7fb62 ("pmdomain: core: Leave powered-on genpds on until late_initcall_sync")
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The recent changes to genpd makes a genpd OF provider that is powered-on at
initialization to stay powered-on, until the ->sync_state() callback is
invoked for it.
This may not happen at all, if we wait for a consumer device to be probed,
leading to wasting energy. There are ways to enforce the ->sync_state()
callback to be invoked, through sysfs or via the probe-defer-timeout, but
none of them in its current form are a good fit for rcar-gen4-sysc PM
domains.
Let's therefore opt-out from this behaviour of genpd for now, by using the
GENPD_FLAG_NO_STAY_ON.
Link: https://lore.kernel.org/all/20250701114733.636510-1-ulf.hansson@linaro.org/
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: 0e789b491b ("pmdomain: core: Leave powered-on genpds on until sync_state")
Fixes: 13a4b7fb62 ("pmdomain: core: Leave powered-on genpds on until late_initcall_sync")
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The recent changes to genpd makes a genpd OF provider that is powered-on at
initialization to stay powered-on, until the ->sync_state() callback is
invoked for it.
This may not happen at all, if we wait for a consumer device to be probed,
leading to wasting energy. There are ways to enforce the ->sync_state()
callback to be invoked, through sysfs or via the probe-defer-timeout, but
none of them in its current form are a good fit for rcar-sysc PM domains.
Let's therefore opt-out from this behaviour of genpd for now, by using the
GENPD_FLAG_NO_STAY_ON.
Link: https://lore.kernel.org/all/20250701114733.636510-1-ulf.hansson@linaro.org/
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: 0e789b491b ("pmdomain: core: Leave powered-on genpds on until sync_state")
Fixes: 13a4b7fb62 ("pmdomain: core: Leave powered-on genpds on until late_initcall_sync")
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The deferred regulator retrieval for Rockchip PM domains are causing some
weird dependencies. More precisely, if the power-domain is powered-on from
the HW perspective, its corresponding regulator must not be powered-off via
regulator_init_complete(), which is a late_initcall_sync.
Even on platforms that don't have the domain-supply regulator specified for
the power-domain provider, may suffer from these problems.
More precisely, things just happen to work before, because
genpd_power_off_unused() (also a late_initcall_sync) managed to power-off
the PM domain before regulator_init_complete() powered-off the regulator.
Ideally this fragile dependency must be fixed properly for the Rockchip PM
domains, but until then, let's fallback to the previous behaviour by using
the GENPD_FLAG_NO_STAY_ON flag.
Link: https://lore.kernel.org/all/20250902-rk3576-lockup-regression-v1-1-c4a0c9daeb00@collabora.com/
Reported-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Sebastian Reichel <sebastian.reichel@collabora.com>
Fixes: 0e789b491b ("pmdomain: core: Leave powered-on genpds on until sync_state")
Fixes: 13a4b7fb62 ("pmdomain: core: Leave powered-on genpds on until late_initcall_sync")
Tested-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Recent changes to genpd prevents those PM domains being powered-on during
initialization from being powered-off during the boot sequence. Based upon
whether CONFIG_PM_CONFIG_PM_GENERIC_DOMAINS_OF is set of not, genpd relies
on the sync_state mechanism or the genpd_power_off_unused() (which is a
late_initcall_sync), to understand when it's okay to allow these PM domains
to be powered-off.
This new behaviour in genpd has lead to problems on different platforms.
Let's therefore restore the behavior of genpd_power_off_unused().
Moreover, let's introduce GENPD_FLAG_NO_STAY_ON, to allow genpd OF
providers to opt-out from the new behaviour.
Link: https://lore.kernel.org/all/20250701114733.636510-1-ulf.hansson@linaro.org/
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/all/20250902-rk3576-lockup-regression-v1-1-c4a0c9daeb00@collabora.com/
Reported-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Fixes: 0e789b491b ("pmdomain: core: Leave powered-on genpds on until sync_state")
Fixes: 13a4b7fb62 ("pmdomain: core: Leave powered-on genpds on until late_initcall_sync")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Supported a complete jump_label implementation based on the ARM64 and
RV64 version and add the CONFIG_JUMP_LABEL=y to the defconfig.
Testing was conducted using a dedicated test module jump-label-test,
provided in the link below. For detailed steps, please refer to the
README also at the provided link.
Link: https://github.com/ChenMiaoi/GSoC-2025-Final-Report/tree/main/tests/jump-label-test
Test Environment:
- Hardware: QEMU emulated OR1K
- Kernel Version: 6.17.0-rc3-dirty
- Configs: CONFIG_MODULES=y,CONFIG_MODULE_UNLOAD=y
- Toolchain: or1k-none-linux-musl-gcc 15.1.0
Test Results:
$ insmod jump_label_test.ko
[ 32.590000] Jump label performance test module loaded
[ 35.250000] Normal branch time: 1241327150 ns (124 ns per iteration)
[ 35.250000] Jump label (false) time: 706422700 ns (70 ns per iteration)
[ 35.250000] Jump label (true) time: 708913450 ns (70 ns per iteration)
$ rmmod jump_label_test.ko
[ 72.210000] Jump label test module unloaded
The results show approximately 43% improvement in branch performance
when using jump labels compared to traditional branches.
Link: https://lore.kernel.org/openrisc/aLsZ9S3X0OpKy1RM@antec/T/#u
Signed-off-by: chenmiao <chenmiao.ku@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Regenerating defconfigs allows subsequent changes to the configs to
be related only to the corresponding modifications, without mixing
changes from other configs.
Signed-off-by: chenmiao <chenmiao.ku@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
To ensure the proper functioning of the jump_label test module, this patch
adds support for the R_OR1K_32_PCREL relocation type for any modules. The
implementation calculates the PC-relative offset by subtracting the
instruction location from the target value and stores the result at the
specified location.
Signed-off-by: chenmiao <chenmiao.ku@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Add text patching api's to use in subsequent jump_label implementation. We use
a new fixmap FIX_TEXT_POKE0 entry to temporarily override MMU mappings to allow
read only text pages to be written to.
Previously, __set_fix was marked with __init as it was only used during the
EARLYCON stage. Now that TEXT_POKE mappings require post-init usage
(e.g., FIX_TEXT_POKE0), keeping __init would cause runtime bugs whenset_fixmap
accesses invalid memory. Thus, we remove the __init flag to ensure __set_fix
remains valid beyond initialization.
A new function patch_insn_write is exposed to allow single instruction patching.
Link: https://lore.kernel.org/openrisc/aJIC8o1WmVHol9RY@antec/T/#t
Signed-off-by: chenmiao <chenmiao.ku@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Add a helper at the end of the MCA polling function to collect vendor and/or
feature actions.
Start with a basic skeleton for now. Actions for AMD thresholding and deferred
errors will be added later.
[ bp: Drop the obvious comment too. ]
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: https://lore.kernel.org/20250908-wip-mca-updates-v6-0-eef5d6c74b9c@amd.com
There are a number of generic and vendor-specific status checks in
machine_check_poll(). These are used to determine if an error should be
skipped.
Move these into helper functions. Future vendor-specific checks will be
added to the helpers.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/20250908-wip-mca-updates-v6-0-eef5d6c74b9c@amd.com
Many quirks are global configuration settings and a handful apply to
each CPU.
Move the per-CPU quirks to vendor init to execute them on each online
CPU. Set the global quirks during BSP-only init so they're only executed
once and early.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/20250908-wip-mca-updates-v6-0-eef5d6c74b9c@amd.com
The 'UNKNOWN' vendor check is handled as a quirk that is run on each
online CPU. However, all CPUs are expected to have the same vendor.
Move the 'UNKNOWN' vendor check to the BSP-only init so it is done early
and once. Remove the unnecessary return value from the quirks check.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/20250908-wip-mca-updates-v6-0-eef5d6c74b9c@amd.com
Currently, on AMD systems, MCA interrupt handler functions are set during CPU
init. However, the functions only need to be set once for the whole system.
Assign the handlers only during BSP init. Do so only for SMCA systems to
maintain the old behavior for legacy systems.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: https://lore.kernel.org/20250908-wip-mca-updates-v6-0-eef5d6c74b9c@amd.com
