Refactor the PCI P2PDMA subsystem to separate the core peer-to-peer DMA
functionality from the optional memory allocation layer. This creates a
two-tier architecture:
The core layer provides P2P mapping functionality for physical addresses
based on PCI device MMIO BARs and integrates with the DMA API for
mapping operations. This layer is required for all P2PDMA users.
The optional upper layer provides memory allocation capabilities
including gen_pool allocator, struct page support, and sysfs interface
for user space access.
This separation allows subsystems like DMABUF to use only the core P2P
mapping functionality without the overhead of memory allocation features
they don't need. The core functionality is now available through the
new pcim_p2pdma_provider() function that returns a p2pdma_provider
structure.
Tested-by: Alex Mastro <amastro@fb.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Ankit Agrawal <ankita@nvidia.com>
Link: https://lore.kernel.org/r/20251120-dmabuf-vfio-v9-3-d7f71607f371@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
Update the pci_p2pdma_bus_addr_map() function to take a direct pointer
to the p2pdma_provider structure instead of the pci_p2pdma_map_state.
This simplifies the API by removing the need for callers to extract
the provider from the state structure.
The change updates all callers across the kernel (block layer, IOMMU,
DMA direct, and HMM) to pass the provider pointer directly, making
the code more explicit and reducing unnecessary indirection. This
also removes the runtime warning check since callers now have direct
control over which provider they use.
Tested-by: Alex Mastro <amastro@fb.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Ankit Agrawal <ankita@nvidia.com>
Link: https://lore.kernel.org/r/20251120-dmabuf-vfio-v9-2-d7f71607f371@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
Currently the P2PDMA code requires a pgmap and a struct page to
function. The was serving three important purposes:
- DMA API compatibility, where scatterlist required a struct page as
input
- Life cycle management, the percpu_ref is used to prevent UAF during
device hot unplug
- A way to get the P2P provider data through the pci_p2pdma_pagemap
The DMA API now has a new flow, and has gained phys_addr_t support, so
it no longer needs struct pages to perform P2P mapping.
Lifecycle management can be delegated to the user, DMABUF for instance
has a suitable invalidation protocol that does not require struct page.
Finding the P2P provider data can also be managed by the caller
without need to look it up from the phys_addr.
Split the P2PDMA code into two layers. The optional upper layer,
effectively, provides a way to mmap() P2P memory into a VMA by
providing struct page, pgmap, a genalloc and sysfs.
The lower layer provides the actual P2P infrastructure and is wrapped
up in a new struct p2pdma_provider. Rework the mmap layer to use new
p2pdma_provider based APIs.
Drivers that do not want to put P2P memory into VMA's can allocate a
struct p2pdma_provider after probe() starts and free it before
remove() completes. When DMA mapping the driver must convey the struct
p2pdma_provider to the DMA mapping code along with a phys_addr of the
MMIO BAR slice to map. The driver must ensure that no DMA mapping
outlives the lifetime of the struct p2pdma_provider.
The intended target of this new API layer is DMABUF. There is usually
only a single p2pdma_provider for a DMABUF exporter. Most drivers can
establish the p2pdma_provider during probe, access the single instance
during DMABUF attach and use that to drive the DMA mapping.
DMABUF provides an invalidation mechanism that can guarantee all DMA
is halted and the DMA mappings are undone prior to destroying the
struct p2pdma_provider. This ensures there is no UAF through DMABUFs
that are lingering past driver removal.
The new p2pdma_provider layer cannot be used to create P2P memory that
can be mapped into VMA's, be used with pin_user_pages(), O_DIRECT, and
so on. These use cases must still use the mmap() layer. The
p2pdma_provider layer is principally for DMABUF-like use cases where
DMABUF natively manages the life cycle and access instead of
vmas/pin_user_pages()/struct page.
In addition, remove the bus_off field from pci_p2pdma_map_state since
it duplicates information already available in the pgmap structure.
The bus_offset is only used in one location (pci_p2pdma_bus_addr_map)
and is always identical to pgmap->bus_offset.
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Alex Mastro <amastro@fb.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Ankit Agrawal <ankita@nvidia.com>
Link: https://lore.kernel.org/r/20251120-dmabuf-vfio-v9-1-d7f71607f371@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
An empty flush bio can have arbitrary bi_sector. The commit 2b1c6d7a89
introduced a regression that device mapper would fail an empty flush bio
with -EIO if the sector pointed beyond the end of the device.
The commit introduced an optimization, that optimization would pass
flushes to __split_and_process_bio and __split_and_process_bio is not
prepared to handle empty bios. Fix this bug by passing only non-empty
flushes to __split_and_process_bio - non-empty flushes must have valid
bi_sector. Empty bios will go through __send_empty_flush, as they did
before the optimization.
This problem can be reproduced by running the lvm2 test:
make check_local T=lvconvert-thin.sh LVM_TEST_PREFER_BRD=0
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: 2b1c6d7a89 ("dm: optimize REQ_PREFLUSH with data when using the linear target")
Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Commit e6366101ce ("tools/nolibc: remove __nolibc_enosys() fallback
from time64-related functions") removed many of these fallbacks but
forgot a few.
Finish the job.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
As off_t is now always 64-bit wide this overflow can not happen anymore,
remove the check.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
The kernel uses 64-bit values for file offsets.
Currently these might be truncated to 32-bit when assigned to
nolibc's off_t values.
Switch to 64-bit off_t consistently.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/lkml/cec27d94-c99d-4c57-9a12-275ea663dda8@app.fastmail.com/
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Make sure to always use the 64-bit safe system call
in preparation for 64-bit off_t on 32 bit architectures.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
The kernel uses 64-bit values for inode numbers.
Currently these might be truncated to 32-bit when assigned to
nolibc's ino_t values.
Switch to 64-bit ino_t consistently.
As ino_t is never used directly in kernel ABIs, no systemcall wrappers
need to be adapted.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/lkml/cec27d94-c99d-4c57-9a12-275ea663dda8@app.fastmail.com/
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
A crash was observed when the sched_ext selftests runner was
terminated with Ctrl+\ while test 15 was running:
NIP [c00000000028fa58] scx_enable.constprop.0+0x358/0x12b0
LR [c00000000028fa2c] scx_enable.constprop.0+0x32c/0x12b0
Call Trace:
scx_enable.constprop.0+0x32c/0x12b0 (unreliable)
bpf_struct_ops_link_create+0x18c/0x22c
__sys_bpf+0x23f8/0x3044
sys_bpf+0x2c/0x6c
system_call_exception+0x124/0x320
system_call_vectored_common+0x15c/0x2ec
kthread_run_worker() returns an ERR_PTR() on failure rather than NULL,
but the current code in scx_alloc_and_add_sched() only checks for a NULL
helper. Incase of failure on SIGQUIT, the error is not handled in
scx_alloc_and_add_sched() and scx_enable() ends up dereferencing an
error pointer.
Error handling is fixed in scx_alloc_and_add_sched() to propagate
PTR_ERR() into ret, so that scx_enable() jumps to the existing error
path, avoiding random dereference on failure.
Fixes: bff3b5aec1 ("sched_ext: Move disable machinery into scx_sched")
Cc: stable@vger.kernel.org # v6.16+
Reported-and-tested-by: Samir Mulani <samir@linux.ibm.com>
Signed-off-by: Saket Kumar Bhaskar <skb99@linux.ibm.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Reviewed-by: Vishal Chourasia <vishalc@linux.ibm.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
If timestamp retriving needs to be retried and the local list of
SKB's already has entries, then it's spliced back into the socket
queue. However, the arguments for the splice helper are transposed,
causing exactly the wrong direction of splicing into the on-stack
list. Fix that up.
Cc: stable@vger.kernel.org
Reported-by: Google Big Sleep <big-sleep-vuln-reports+bigsleep-462435176@google.com>
Fixes: 9e4ed359b8 ("io_uring/netcmd: add tx timestamping cmd support")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Extend software node implementation, allowing its properties to reference
existing firmware nodes.
* Update the GPIO property interface to use reworked swnode macros.
* Rework reset-gpio code to use GPIO lookup via swnode.
* Fix spi-cs42l43 driver to work with swnode changes.
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Merge tag 'reset-gpio-for-v6.19' of https://git.pengutronix.de/git/pza/linux into gpio/for-next
Reset/GPIO/swnode changes for v6.19
* Extend software node implementation, allowing its properties to reference
existing firmware nodes.
* Update the GPIO property interface to use reworked swnode macros.
* Rework reset-gpio code to use GPIO lookup via swnode.
* Fix spi-cs42l43 driver to work with swnode changes.
The commit e7bafbf717 ("arm64: mm: Add top-level dispatcher for
internal mem_encrypt API") adds ARCH_HAS_MEM_ENCRYPT. And then the
commit 42be24a417 ("arm64: Enable memory encrypt for Realms") adds
duplicate config. Just remove it.
Fixes: 42be24a417 ("arm64: Enable memory encrypt for Realms")
Signed-off-by: Cai Xinchen <caixinchen1@huawei.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Fix a regression introduced during the 6.16 development cycle that
may cause runtime PM to be enabled by mistake for devices that do not
support it (which may lead to some serious trouble) if there is a
system wakeup event during the "late suspend" phase of system suspend.
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Merge tag 'pm-6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Fix a regression introduced during the 6.16 development cycle that may
cause runtime PM to be enabled by mistake for devices that do not
support it (which may lead to some serious trouble) if there is a
system wakeup event during the "late suspend" phase of system suspend"
* tag 'pm-6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: sleep: core: Fix runtime PM enabling in device_resume_early()
This fixes EINJV2 support introduced during the 6.17 cycle by unbreaking
the initialization broken by a previous attempted fix, adding sanity
checks for data coming from the platform firmware, and updating the code
to handle injecting legacy error types on an EINJV2 capable systems
properly (Tony Luck).
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Merge tag 'acpi-6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"This fixes EINJV2 support introduced during the 6.17 cycle by
unbreaking the initialization broken by a previous attempted fix,
adding sanity checks for data coming from the platform firmware, and
updating the code to handle injecting legacy error types on an EINJV2
capable systems properly (Tony Luck)"
* tag 'acpi-6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: APEI: EINJ: Fix EINJV2 initialization and injection
Fixes
- acer-wmi: Ignore backlight event
- alienware-wmi-wmax: Fix quirk match table order & drop redundant entries
- amd/pmc:
- Add Xbox Ally to spurious 8042 quirk list
- Quirk list Lenovo Legion Go 2 NVMe resume
- msi-wmi-platform:
- Correct GUID to uppercase
- GUID is uncleverly copy-pasted from an example so add a DMI whitelist
- intel/speed_select_if: PCIBIOS_* return code conversion
- intel-uncore-freq & ISST: Fix kernel doc warnings
New HW support
- alienware-wmi-wmax:
- Alienware 16 Aurora support
- Alienware M support
- Alienware X support
- Dell G support
- amd/pmc:
- ROG Xbox Ally (non-X) support
- huaway-wmi: HONOR MagicBoox X16/X14 PrintScreen & YOYO keys
- hp-wmi:
- Omen 16-wf1xxx fan support
- Omen MAX 16-ah0xx fan + thermal profile support
- Victus 16-r0 and 16-s0 fan + thermal profile support
- intel/hid: Intel Nova Lake support
- intel-uncore-freq:
- Intel Panther Lake support
- Intel Wildcat Lake support
- Intel Nova Lake support
The following is an automated shortlog grouped by driver:
acer-wmi:
- Ignore backlight event
alienware-wmi-wmax:
- Add AWCC support to Alienware 16 Aurora
- Add support for the whole "G" family
- Add support for the whole "M" family
- Add support for the whole "X" family
- Drop redundant DMI entries
- Fix "Alienware m16 R1 AMD" quirk order
amd: pmc:
- Add Lenovo Legion Go 2 to pmc quirk list
amd/pmc:
- Add spurious_8042 to Xbox Ally
- Add support for Van Gogh SoC
hp-wmi:
- Add Omen 16-wf1xxx fan support
- Add Omen MAX 16-ah0xx fan support and thermal profile
- mark Victus 16-r0 and 16-s0 for victus_s fan and thermal profile support
huawei-wmi:
- add keys for HONOR models
intel/hid:
- Add Nova Lake support
intel/speed_select_if:
- Convert PCIBIOS_* return codes to errnos
intel-uncore-freq:
- Add additional client processors
- fix all header kernel-doc warnings
ISST: isst_if.h:
- fix all kernel-doc warnings
msi-wmi-platform:
- Fix typo in WMI GUID
- Only load on MSI devices
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Merge tag 'platform-drivers-x86-v6.18-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Ilpo Järvinen:
"This one has lots of new HW entries which adds to the size in diffstat
but the individual changes are simple.
Fixes
- acer-wmi: Ignore backlight event
- alienware-wmi-wmax: Fix quirk match table order & drop redundant
entries
- amd/pmc:
- Add Xbox Ally to spurious 8042 quirk list
- Quirk list Lenovo Legion Go 2 NVMe resume
- msi-wmi-platform:
- Correct GUID to uppercase
- GUID is uncleverly copy-pasted from an example so add a DMI
whitelist
- intel/speed_select_if: PCIBIOS_* return code conversion
- intel-uncore-freq & ISST: Fix kernel doc warnings
New HW support
- alienware-wmi-wmax:
- Alienware 16 Aurora support
- Alienware M support
- Alienware X support
- Dell G support
- amd/pmc:
- ROG Xbox Ally (non-X) support
- huaway-wmi: HONOR MagicBoox X16/X14 PrintScreen & YOYO keys
- hp-wmi:
- Omen 16-wf1xxx fan support
- Omen MAX 16-ah0xx fan + thermal profile support
- Victus 16-r0 and 16-s0 fan + thermal profile support
- intel/hid: Intel Nova Lake support
- intel-uncore-freq:
- Intel Panther Lake support
- Intel Wildcat Lake support
- Intel Nova Lake support"
* tag 'platform-drivers-x86-v6.18-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (21 commits)
platform/x86: intel-uncore-freq: fix all header kernel-doc warnings
platform/x86: acer-wmi: Ignore backlight event
platform/x86/intel/speed_select_if: Convert PCIBIOS_* return codes to errnos
platform/x86/intel/hid: Add Nova Lake support
platform/x86: alienware-wmi-wmax: Add AWCC support to Alienware 16 Aurora
platform/x86: hp-wmi: Add Omen MAX 16-ah0xx fan support and thermal profile
platform/x86: msi-wmi-platform: Fix typo in WMI GUID
platform/x86: msi-wmi-platform: Only load on MSI devices
platform/x86/amd: pmc: Add Lenovo Legion Go 2 to pmc quirk list
platform/x86/amd/pmc: Add spurious_8042 to Xbox Ally
platform/x86/amd/pmc: Add support for Van Gogh SoC
platform/x86: alienware-wmi-wmax: Add support for the whole "G" family
platform/x86: alienware-wmi-wmax: Add support for the whole "X" family
platform/x86: alienware-wmi-wmax: Add support for the whole "M" family
platform/x86: alienware-wmi-wmax: Drop redundant DMI entries
platform/x86: alienware-wmi-wmax: Fix "Alienware m16 R1 AMD" quirk order
platform/x86: ISST: isst_if.h: fix all kernel-doc warnings
platform/x86: intel-uncore-freq: Add additional client processors
platform/x86: hp-wmi: Add Omen 16-wf1xxx fan support
platform/x86: huawei-wmi: add keys for HONOR models
...
Currently if a user enqueues a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
This patch continues the effort to refactor worqueue APIs, which has begun
with the change introducing new workqueues and a new alloc_workqueue flag:
commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")
This specific workload do not benefit from a per-cpu workqueue, so use
the default unbound workqueue (system_dfl_wq) instead.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Link: https://patch.msgid.link/20251106145003.245866-1-marco.crivellari@suse.com
Signed-off-by: Mark Brown <broonie@kernel.org>
subtest_kmem_cache_iter_check_slabinfo() fundamentally compares slab
cache names parsed out from /proc/slabinfo against those stored within
struct kmem_cache_result. The current problem is that the slab cache
name within struct kmem_cache_result is stored within a bounded
fixed-length array (sized to SLAB_NAME_MAX(32)), whereas the name
parsed out from /proc/slabinfo is not. Meaning, using ASSERT_STREQ()
can certainly lead to test failures, particularly when dealing with
slab cache names that are longer than SLAB_NAME_MAX(32)
bytes. Notably, kmem_cache_create() allows callers to create slab
caches with somewhat arbitrarily sized names via its __name identifier
argument, so exceeding the SLAB_NAME_MAX(32) limit that is in place
now can certainly happen.
Make subtest_kmem_cache_iter_check_slabinfo() more reliable by only
checking up to sizeof(struct kmem_cache_result.name) - 1 using
ASSERT_STRNEQ().
Fixes: a496d0cdc8 ("selftests/bpf: Add a test for kmem_cache_iter")
Signed-off-by: Matt Bobrowski <mattbobrowski@google.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Link: https://patch.msgid.link/20251118073734.4188710-1-mattbobrowski@google.com
Add a driver to support the individual SDCA functions within the class
driver. Use the SDCA helpers to parse the DisCo information and register
a function driver based on those properties. Manage the boot of the
function, reset, FDL, defaults. Manage the function level register map.
Co-developed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-14-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a device level driver as the entry point for the class driver.
Additional auxiliary drivers will be registered to support each function
within the device. This driver will register those function drivers and
provide the device level functionality, such as monitoring bus
attach/detach, the device level register map, and the root for the IRQ
handling.
Co-developed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-13-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Use the auxiliary bus to register/unregister subdevices for each
function. Each function will be handled with a separate driver,
matched using a name.
If a vendor wants to override a specific function driver, they could
use a custom name to match with a custom function driver.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-12-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a helper function to write out the SDCA blind initialization writes.
Acked-by: Vinod Koul <vkoul@kernel.org>
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-11-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
It is not uncommon for an SDCA Control to have no specified default
value in the DisCo. Non-volatile registers with no defaults will not be
present in the cache until they are accessed. However, if the first
operation user-space performs is a read whilst the device is runtime
suspended this read will fail.
To avoid such problems we should populate values from the hardware into
the cache for all non-volatile readable registers with no defaults.
Update the defaults handling to do this cache population since it is
iterating over the Controls and happens at a time the hardware is
always powered up.
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-10-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The indentation of the loop processing writing out SDCA Control default
values is getting a bit large. Reduce indentation and make adding more
functionality easier by factoring out the Control handling into a helper
function.
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-9-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
We have the SDCA_CTL_TYPE helper macros, we should use them when
identifying specific controls to simplify the code a little.
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-8-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The SDCA code is very spammy on boot as it prints a lot of parsing
details using info prints. Now primary development is complete move
these to debug prints to reduce the spam.
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-7-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a comment to better explain the function reset polling rate.
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-6-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The current locking in sdca_fdl_process() locks over
sdca_ump_cancel_timeout() and the timeout work function takes the same
lock, this can lead to a deadlock if the work runs as part of the
cancel. To fix this use scoped_guard and move the cancel timeout to be
outside the lock.
Fixes: e92e25f777 ("ASoC: SDCA: Add UMP timeout handling for FDL")
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-5-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The structure sdca_function_desc contains a fwnode_handle which is
undefined if the user doesn't pull in an appropriate header. Add a
forward declaration to avoid this.
Fixes: 996bf834d0 ("ASoC: SDCA: Add code to parse Function information")
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-4-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The property name is "mipi-sdca-RxUMP-ownership-transition-max-delay",
with a dash between max and delay. Add the missing dash.
Fixes: 13ef21dffe ("ASoC: SDCA: add support for HIDE entity properties and HID descriptor/report")
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-3-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Both HID and the IRQ are now build into the wider SDCA kernel module, so
their module macros are redundant, remove them.
Fixes: 5030abcb0a ("ASoC: SDCA: Pull HID and IRQ into the primary SDCA module")
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Tested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251120153023.2105663-2-ckeepax@opensource.cirrus.com
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add compatible entry in spidev describing in Arduino UnoQ single-board
computer the interface between Qualcomm QRB2210 microprocessor and
STMicroelectronics STM32U585 microcontroller.
It is handled in user space by the arduino-router service.
Signed-off-by: Riccardo Mereu <r.mereu@arduino.cc>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://patch.msgid.link/20251120155825.121483-4-r.mereu.kernel@arduino.cc
Signed-off-by: Mark Brown <broonie@kernel.org>
Add unoq mcu interface. It describes an iterface between Qualcomm
QRB2210 microprocessor and STMicroelectronics STM32U585 microcontroller
on Arduino UnoQ single-board computer.
This is a trivial device since it's usage is handled in user space
by the arduino-router service.
Signed-off-by: Riccardo Mereu <r.mereu@arduino.cc>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://patch.msgid.link/20251120155825.121483-3-r.mereu.kernel@arduino.cc
Signed-off-by: Mark Brown <broonie@kernel.org>
Document the compatible for ANV32C81W 256kb Serial SPI non-volatile SRAM.
Although it is a SRAM device, it can be accessed through EEPROM interface.
At least until there is no proper SRAM driver support for it.
Signed-off-by: Marek Vasut <marex@nabladev.com>
Link: https://patch.msgid.link/20251118121513.88352-1-marex@nabladev.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Cross-merge networking fixes after downstream PR (net-6.18-rc7).
No conflicts, adjacent changes:
tools/testing/selftests/net/af_unix/Makefile
e1bb28bf13 ("selftest: af_unix: Add test for SO_PEEK_OFF.")
45a1cd8346 ("selftests: af_unix: Add tests for ECONNRESET and EOF semantics")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This phy supports both 24MHz and 100MHz clock inputs. By default it's
using XTAL 24MHz and the 100MHz clock is a alternate reference clock.
Add supports to use alternate reference clock in case 24MHz clock
can't work well.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20251118071947.2504789-2-xu.yang_2@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Beside default 24MHz clock input, there is an optional additional 100Mhz
clock input 'alt' for USB PHY reference clock.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20251118071947.2504789-1-xu.yang_2@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
When cross-compilation is not used, BPFOBJ and HOST_BPFOBJ are identical
files, libbpf.a, and duplicate libbpf.a files should be removed.
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixup PHY deskew FIFO to prevent the phase of D2 lane going ahead of
other lanes. It's worth noting this might only happen when dealing with
HDMI 2.0 rates.
Fixes: 553be2830c ("phy: rockchip: Add Samsung HDMI/eDP Combo PHY driver")
Co-developed-by: Algea Cao <algea.cao@rock-chips.com>
Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251028-phy-hdptx-fixes-v1-3-ecc642a59d94@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Due to its relatively low frequency, a noise stemming from the 24MHz PLL
reference clock may traverse the low-pass loop filter of ROPLL, which
could potentially generate some HDMI flash artifacts.
Reduce ROPLL loop bandwidth in an attempt to mitigate the problem.
Fixes: 553be2830c ("phy: rockchip: Add Samsung HDMI/eDP Combo PHY driver")
Co-developed-by: Algea Cao <algea.cao@rock-chips.com>
Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251028-phy-hdptx-fixes-v1-2-ecc642a59d94@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
When making use of the clock provider functionality, the output clock
does normally match the TMDS character rate, which is what the PHY PLL
gets configured to.
However, this is only applicable for default color depth of 8 bpc. For
higher depths, the output clock is further divided by the hardware
according to the formula:
output_clock_rate = tmds_char_rate * 8 / bpc
Since the existence of the clock divider wasn't taken into account when
support for high bpc has been introduced, make the necessary adjustments
to report the correct clock rate.
Fixes: 9d0ec51d7c ("phy: rockchip: samsung-hdptx: Add high color depth management")
Reported-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251028-phy-hdptx-fixes-v1-1-ecc642a59d94@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
*** Bug description ***
When testing kexec-reboot on a 144 cpus machine with
isolcpus=managed_irq,domain,1-71,73-143 in kernel command line, I
encounter the following bug:
[ 97.114759] psci: CPU142 killed (polled 0 ms)
[ 97.333236] Failed to offline CPU143 - error=-16
[ 97.333246] ------------[ cut here ]------------
[ 97.342682] kernel BUG at kernel/cpu.c:1569!
[ 97.347049] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP
[...]
In essence, the issue originates from the CPU hot-removal process, not
limited to kexec. It can be reproduced by writing a SCHED_DEADLINE
program that waits indefinitely on a semaphore, spawning multiple
instances to ensure some run on CPU 72, and then offlining CPUs 1–143
one by one. When attempting this, CPU 143 failed to go offline.
bash -c 'taskset -cp 0 $$ && for i in {1..143}; do echo 0 > /sys/devices/system/cpu/cpu$i/online 2>/dev/null; done'
Tracking down this issue, I found that dl_bw_deactivate() returned
-EBUSY, which caused sched_cpu_deactivate() to fail on the last CPU.
But that is not the fact, and contributed by the following factors:
When a CPU is inactive, cpu_rq()->rd is set to def_root_domain. For an
blocked-state deadline task (in this case, "cppc_fie"), it was not
migrated to CPU0, and its task_rq() information is stale. So its rq->rd
points to def_root_domain instead of the one shared with CPU0. As a
result, its bandwidth is wrongly accounted into a wrong root domain
during domain rebuild.
*** Issue ***
The key point is that root_domain is only tracked through active rq->rd.
To avoid using a global data structure to track all root_domains in the
system, there should be a method to locate an active CPU within the
corresponding root_domain.
*** Solution ***
To locate the active cpu, the following rules for deadline
sub-system is useful
-1.any cpu belongs to a unique root domain at a given time
-2.DL bandwidth checker ensures that the root domain has active cpus.
Now, let's examine the blocked-state task P.
If P is attached to a cpuset that is a partition root, it is
straightforward to find an active CPU.
If P is attached to a cpuset that has changed from 'root' to 'member',
the active CPUs are grouped into the parent root domain. Naturally, the
CPUs' capacity and reserved DL bandwidth are taken into account in the
ancestor root domain. (In practice, it may be unsafe to attach P to an
arbitrary root domain, since that domain may lack sufficient DL
bandwidth for P.) Again, it is straightforward to find an active CPU in
the ancestor root domain.
This patch groups CPUs into isolated and housekeeping sets. For the
housekeeping group, it walks up the cpuset hierarchy to find active CPUs
in P's root domain and retrieves the valid rd from cpu_rq(cpu)->rd.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Chen Ridong <chenridong@huaweicloud.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Pierre Gondois <pierre.gondois@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ben Segall <bsegall@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Valentin Schneider <vschneid@redhat.com>
To: linux-kernel@vger.kernel.org
Signed-off-by: Tejun Heo <tj@kernel.org>
cpuset_cpus_allowed() uses a reader lock that is sleepable under RT,
which means it cannot be called inside raw_spin_lock_t context.
Introduce a new cpuset_cpus_allowed_locked() helper that performs the
same function as cpuset_cpus_allowed() except that the caller must have
acquired the cpuset_mutex so that no further locking will be needed.
Suggested-by: Waiman Long <longman@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: linux-kernel@vger.kernel.org
To: cgroups@vger.kernel.org
Reviewed-by: Chen Ridong <chenridong@huawei.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The "phy_id" comes from the device tree so it's going to be correct.
But static checkers sometimes complain when we have an upper bounds
check with no lower bounds check. Also it's a bit unusual that the
lowest valid number is 1 instead of 0 so adding a check could
potentially help someone.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/aPJpB-QI8FMpFGOk@stanley.mountain
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Previous releases - regressions:
- prevent NULL deref in generic_hwtstamp_ioctl_lower(),
newer APIs don't populate all the pointers in the request
- phylink: add missing supported link modes for the fixed-link
- mptcp: fix false positive warning in mptcp_pm_nl_rm_addr
Previous releases - always broken:
- openvswitch: remove never-working support for setting NSH fields
- xfrm: number of fixes for error paths of xfrm_state creation/
modification/deletion
- xfrm: fixes for offload
- fix the determination of the protocol of the inner packet
- don't push locally generated packets directly to L2 tunnel
mode offloading, they still need processing from the standard
xfrm path
- mptcp: fix a couple of corner cases in fallback and fastclose
handling
- wifi: rtw89: hw_scan: prevent connections from getting stuck,
work around apparent bug in FW by tweaking messages we send
- af_unix: fix duplicate data if PEEK w/ peek_offset needs to wait
- veth: more robust handing of race to avoid txq getting stuck
- eth: ps3_gelic_net: handle skb allocation failures
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from IPsec and wireless.
Previous releases - regressions:
- prevent NULL deref in generic_hwtstamp_ioctl_lower(),
newer APIs don't populate all the pointers in the request
- phylink: add missing supported link modes for the fixed-link
- mptcp: fix false positive warning in mptcp_pm_nl_rm_addr
Previous releases - always broken:
- openvswitch: remove never-working support for setting NSH fields
- xfrm: number of fixes for error paths of xfrm_state creation/
modification/deletion
- xfrm: fixes for offload
- fix the determination of the protocol of the inner packet
- don't push locally generated packets directly to L2 tunnel
mode offloading, they still need processing from the standard
xfrm path
- mptcp: fix a couple of corner cases in fallback and fastclose
handling
- wifi: rtw89: hw_scan: prevent connections from getting stuck,
work around apparent bug in FW by tweaking messages we send
- af_unix: fix duplicate data if PEEK w/ peek_offset needs to wait
- veth: more robust handing of race to avoid txq getting stuck
- eth: ps3_gelic_net: handle skb allocation failures"
* tag 'net-6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (47 commits)
vsock: Ignore signal/timeout on connect() if already established
be2net: pass wrb_params in case of OS2BMC
l2tp: reset skb control buffer on xmit
net: dsa: microchip: lan937x: Fix RGMII delay tuning
selftests: mptcp: add a check for 'add_addr_accepted'
mptcp: fix address removal logic in mptcp_pm_nl_rm_addr
selftests: mptcp: join: userspace: longer timeout
selftests: mptcp: join: endpoints: longer timeout
selftests: mptcp: join: fastclose: remove flaky marks
mptcp: fix duplicate reset on fastclose
mptcp: decouple mptcp fastclose from tcp close
mptcp: do not fallback when OoO is present
mptcp: fix premature close in case of fallback
mptcp: avoid unneeded subflow-level drops
mptcp: fix ack generation for fallback msk
wifi: rtw89: hw_scan: Don't let the operating channel be last
net: phylink: add missing supported link modes for the fixed-link
selftest: af_unix: Add test for SO_PEEK_OFF.
af_unix: Read sk_peek_offset() again after sleeping in unix_stream_read_generic().
net/mlx5: Clean up only new IRQ glue on request_irq() failure
...
