fwctl is a new subsystem intended to bring some common rules and order to
the growing pattern of exposing a secure FW interface directly to
userspace. Unlike existing places like RDMA/DRM/VFIO/uacce that are
exposing a device for datapath operations fwctl is focused on debugging,
configuration and provisioning of the device. It will not have the
necessary features like interrupt delivery to support a datapath.
This concept is similar to the long standing practice in the "HW" RAID
space of having a device specific misc device to manage the RAID
controller FW. fwctl generalizes this notion of a companion debug and
management interface that goes along with a dataplane implemented in an
appropriate subsystem.
There have been three LWN articles written discussing various aspects of
this:
https://lwn.net/Articles/955001/https://lwn.net/Articles/969383/https://lwn.net/Articles/990802/
This pull requests includes three drivers to launch the subsystem:
- CXL provides a vendor scheme for executing commands and a way to learn
the 'command effects' (ie the security properties) of such
commands. The fwctl driver allows access to these mechanism within the
fwctl security model
- mlx5 is family of networking products, the driver supports all current
Mellanox HW still receiving FW feature updates. This includes RDMA
multiprotocol NICs like ConnectX and the Bluefield family of Smart
NICs.
- AMD/Pensando Distributed Services card is a multi protocol Smart NIC
with a multi PCI function design. fwctl works on the management PCI
function following a 'command effects' model similar to CXL.
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Merge tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull fwctl subsystem from Jason Gunthorpe:
"fwctl is a new subsystem intended to bring some common rules and order
to the growing pattern of exposing a secure FW interface directly to
userspace.
Unlike existing places like RDMA/DRM/VFIO/uacce that are exposing a
device for datapath operations fwctl is focused on debugging,
configuration and provisioning of the device. It will not have the
necessary features like interrupt delivery to support a datapath.
This concept is similar to the long standing practice in the "HW" RAID
space of having a device specific misc device to manage the RAID
controller FW. fwctl generalizes this notion of a companion debug and
management interface that goes along with a dataplane implemented in
an appropriate subsystem.
There have been three LWN articles written discussing various aspects
of this:
https://lwn.net/Articles/955001/https://lwn.net/Articles/969383/https://lwn.net/Articles/990802/
This includes three drivers to launch the subsystem:
- CXL provides a vendor scheme for executing commands and a way to
learn the 'command effects' (ie the security properties) of such
commands. The fwctl driver allows access to these mechanism within
the fwctl security model
- mlx5 is family of networking products, the driver supports all
current Mellanox HW still receiving FW feature updates. This
includes RDMA multiprotocol NICs like ConnectX and the Bluefield
family of Smart NICs.
- AMD/Pensando Distributed Services card is a multi protocol Smart
NIC with a multi PCI function design. fwctl works on the management
PCI function following a 'command effects' model similar to CXL"
* tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (30 commits)
pds_fwctl: add Documentation entries
pds_fwctl: add rpc and query support
pds_fwctl: initial driver framework
pds_core: add new fwctl auxiliary_device
pds_core: specify auxiliary_device to be created
pds_core: make pdsc_auxbus_dev_del() void
cxl: Fixup kdoc issues for include/cxl/features.h
fwctl/cxl: Add documentation to FWCTL CXL
cxl/test: Add Set Feature support to cxl_test
cxl/test: Add Get Feature support to cxl_test
cxl: Add support to handle user feature commands for set feature
cxl: Add support to handle user feature commands for get feature
cxl: Add support for fwctl RPC command to enable CXL feature commands
cxl: Move cxl feature command structs to user header
cxl: Add FWCTL support to CXL
mlx5: Create an auxiliary device for fwctl_mlx5
fwctl/mlx5: Support for communicating with mlx5 fw
fwctl: Add documentation
fwctl: FWCTL_RPC to execute a Remote Procedure Call to device firmware
taint: Add TAINT_FWCTL
...
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Merge tag 'landlock-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull landlock updates from Mickaël Salaün:
"This brings two main changes to Landlock:
- A signal scoping fix with a new interface for user space to know if
it is compatible with the running kernel.
- Audit support to give visibility on why access requests are denied,
including the origin of the security policy, missing access rights,
and description of object(s). This was designed to limit log spam
as much as possible while still alerting about unexpected blocked
access.
With these changes come new and improved documentation, and a lot of
new tests"
* tag 'landlock-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: (36 commits)
landlock: Add audit documentation
selftests/landlock: Add audit tests for network
selftests/landlock: Add audit tests for filesystem
selftests/landlock: Add audit tests for abstract UNIX socket scoping
selftests/landlock: Add audit tests for ptrace
selftests/landlock: Test audit with restrict flags
selftests/landlock: Add tests for audit flags and domain IDs
selftests/landlock: Extend tests for landlock_restrict_self(2)'s flags
selftests/landlock: Add test for invalid ruleset file descriptor
samples/landlock: Enable users to log sandbox denials
landlock: Add LANDLOCK_RESTRICT_SELF_LOG_SUBDOMAINS_OFF
landlock: Add LANDLOCK_RESTRICT_SELF_LOG_*_EXEC_* flags
landlock: Log scoped denials
landlock: Log TCP bind and connect denials
landlock: Log truncate and IOCTL denials
landlock: Factor out IOCTL hooks
landlock: Log file-related denials
landlock: Log mount-related denials
landlock: Add AUDIT_LANDLOCK_DOMAIN and log domain status
landlock: Add AUDIT_LANDLOCK_ACCESS and log ptrace denials
...
Updates to the usual drivers (scsi_debug, ufs, lpfc, st, fnic, mpi3mr,
mpt3sas) and the removal of cxlflash. The only non-trivial core change
is an addition to unit attention handling to recognize UAs for power
on/reset and new media so the tape driver can use it.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Updates to the usual drivers (scsi_debug, ufs, lpfc, st, fnic, mpi3mr,
mpt3sas) and the removal of cxlflash.
The only non-trivial core change is an addition to unit attention
handling to recognize UAs for power on/reset and new media so the tape
driver can use it"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (107 commits)
scsi: st: Tighten the page format heuristics with MODE SELECT
scsi: st: ERASE does not change tape location
scsi: st: Fix array overflow in st_setup()
scsi: target: tcm_loop: Fix wrong abort tag
scsi: lpfc: Restore clearing of NLP_UNREG_INP in ndlp->nlp_flag
scsi: hisi_sas: Fixed failure to issue vendor specific commands
scsi: fnic: Remove unnecessary NUL-terminations
scsi: fnic: Remove redundant flush_workqueue() calls
scsi: core: Use a switch statement when attaching VPD pages
scsi: ufs: renesas: Add initialization code for R-Car S4-8 ES1.2
scsi: ufs: renesas: Add reusable functions
scsi: ufs: renesas: Refactor 0x10ad/0x10af PHY settings
scsi: ufs: renesas: Remove register control helper function
scsi: ufs: renesas: Add register read to remove save/set/restore
scsi: ufs: renesas: Replace init data by init code
scsi: ufs: dt-bindings: renesas,ufs: Add calibration data
scsi: mpi3mr: Task Abort EH Support
scsi: storvsc: Don't report the host packet status as the hv status
scsi: isci: Make most module parameters static
scsi: megaraid_sas: Make most module parameters static
...
Because audit is dedicated to the system administrator, create a new
entry in Documentation/admin-guide/LSM . Extend other Landlock
documentation's pages with this new one.
Extend UAPI with the new log flags.
Extend the guiding principles with logs.
Cc: Günther Noack <gnoack@google.com>
Cc: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/20250320190717.2287696-29-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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Merge tag 'hyperv-next-signed-20250324' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- Add support for running as the root partition in Hyper-V (Microsoft
Hypervisor) by exposing /dev/mshv (Nuno and various people)
- Add support for CPU offlining in Hyper-V (Hamza Mahfooz)
- Misc fixes and cleanups (Roman Kisel, Tianyu Lan, Wei Liu, Michael
Kelley, Thorsten Blum)
* tag 'hyperv-next-signed-20250324' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (24 commits)
x86/hyperv: fix an indentation issue in mshyperv.h
x86/hyperv: Add comments about hv_vpset and var size hypercall input args
Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMs
hyperv: Add definitions for root partition driver to hv headers
x86: hyperv: Add mshv_handler() irq handler and setup function
Drivers: hv: Introduce per-cpu event ring tail
Drivers: hv: Export some functions for use by root partition module
acpi: numa: Export node_to_pxm()
hyperv: Introduce hv_recommend_using_aeoi()
arm64/hyperv: Add some missing functions to arm64
x86/mshyperv: Add support for extended Hyper-V features
hyperv: Log hypercall status codes as strings
x86/hyperv: Fix check of return value from snp_set_vmsa()
x86/hyperv: Add VTL mode callback for restarting the system
x86/hyperv: Add VTL mode emergency restart callback
hyperv: Remove unused union and structs
hyperv: Add CONFIG_MSHV_ROOT to gate root partition support
hyperv: Change hv_root_partition into a function
hyperv: Convert hypercall statuses to linux error codes
drivers/hv: add CPU offlining support
...
- Significant changes throughout the tree to bring Python code up to
current standards and raise the minimum Python required to 3.9. Much of
this is preparatory to replacing the ancient Perl scripts/kernel-doc
horror with a slightly less horrifying Python implementation, expected
for 6.16.
- Update the minimum Sphinx required to 3.4.3, allowing us to remove a
bunch of older compatibility code.
- Rework and improve the generation of the ABI documentation.
(All of the above done by Mauro)
- Lots of translation updates. Alex Shi and Yanteng Si are taking on
responsibility for the Chinese translations going forward; that work will
still get to you via docs-next
- Try to standardize the format for indicating a developer's affiliation in
commit tags.
- Clarify the TAB's role in CoC enforcement actions.
- Try to spell out the rules for when a commit tag can name another
developer without their explicit permission.
Plus lots of other typo fixes and updates.
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Merge tag 'docs-6.15' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It has been a reasonably busy cycle for docs...
- Significant changes throughout the tree to bring Python code up to
current standards and raise the minimum Python required to 3.9
Much of this is preparatory to replacing the ancient Perl
scripts/kernel-doc horror with a slightly less horrifying Python
implementation, expected for 6.16
- Update the minimum Sphinx required to 3.4.3, allowing us to remove
a bunch of older compatibility code
- Rework and improve the generation of the ABI documentation
(All of the above done by Mauro)
- Lots of translation updates. Alex Shi and Yanteng Si are taking on
responsibility for the Chinese translations going forward; that
work will still get to you via docs-next
- Try to standardize the format for indicating a developer's
affiliation in commit tags
- Clarify the TAB's role in CoC enforcement actions
- Try to spell out the rules for when a commit tag can name another
developer without their explicit permission
Plus lots of other typo fixes and updates"
* tag 'docs-6.15' of git://git.lwn.net/linux: (98 commits)
docs/zh_CN: fix spelling mistake
docs/Chinese: change the disclaimer words
docs/zh_CN: Add snp-tdx-threat-model index Chinese translation
docs: driver-api: firmware: clarify userspace requirements
docs: clarify rules wrt tagging other people
docs: Remove outdated highuid.rst documentation
Documentation: dma-buf: heaps: Add heap name definitions
docs/.../submit-checklist: Use Documentation/admin-guide/abi.rst for cross-ref of README
docs: Correct installation instruction
Documentation: kcsan: fix "Plain Accesses and Data Races" URL in kcsan.rst
Documentation/CoC: Spell out the TAB role in enforcement decisions
Documentation: ocxl.rst: Update consortium site
scripts: get_feat.pl: substitute s390x with s390
scripts/kernel-doc: drop dead code for Wcontents_before_sections
scripts/kernel-doc: don't add not needed new lines
docs: driver-api/infiniband.rst: fix Kerneldoc markup
drivers: firewire: firewire-cdev.h: fix identation on a kernel-doc markup
drivers: media: intel-ipu3.h: fix identation on a kernel-doc markup
include/asm-generic/io.h: fix kerneldoc markup
Docs/arch/arm64: Fix spelling in amu.rst
...
Add pds_fwctl to the driver and fwctl documentation pages.
Link: https://patch.msgid.link/r/20250320194412.67983-7-shannon.nelson@amd.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Provide a set of IOCTLs for creating and managing child partitions when
running as root partition on Hyper-V. The new driver is enabled via
CONFIG_MSHV_ROOT.
A brief overview of the interface:
MSHV_CREATE_PARTITION is the entry point, returning a file descriptor
representing a child partition. IOCTLs on this fd can be used to map
memory, create VPs, etc.
Creating a VP returns another file descriptor representing that VP which
in turn has another set of corresponding IOCTLs for running the VP,
getting/setting state, etc.
MSHV_ROOT_HVCALL is a generic "passthrough" hypercall IOCTL which can be
used for a number of partition or VP hypercalls. This is for hypercalls
that do not affect any state in the kernel driver, such as getting and
setting VP registers and partition properties, translating addresses,
etc. It is "passthrough" because the binary input and output for the
hypercall is only interpreted by the VMM - the kernel driver does
nothing but insert the VP and partition id where necessary (which are
always in the same place), and execute the hypercall.
Co-developed-by: Anirudh Rayabharam <anrayabh@linux.microsoft.com>
Signed-off-by: Anirudh Rayabharam <anrayabh@linux.microsoft.com>
Co-developed-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Co-developed-by: Mukesh Rathor <mrathor@linux.microsoft.com>
Signed-off-by: Mukesh Rathor <mrathor@linux.microsoft.com>
Co-developed-by: Muminul Islam <muislam@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Co-developed-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Co-developed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Co-developed-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: Roman Kisel <romank@linux.microsoft.com>
Link: https://lore.kernel.org/r/1741980536-3865-11-git-send-email-nunodasneves@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1741980536-3865-11-git-send-email-nunodasneves@linux.microsoft.com>
* Clarify terminology
* Stop mixing the unix(7) and signal(7) aspects in the explanation.
Terminology:
* The *IPC Scope* of a Landlock domain is that Landlock domain and its
nested domains.
* An *operation* (e.g., signaling, connecting to abstract UDS) is said to
be *scoped within a domain* when the flag for that operation was set at
ruleset creation time. This means that for the purpose of this
operation, only processes within the domain's IPC scope are reachable.
Signed-off-by: Günther Noack <gnoack@google.com>
Link: https://lore.kernel.org/r/20250303194510.135506-4-gnoack@google.com
[mic: Update doc date]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
CoreSight self-hosted tracing driver subsystem update for Linux v6.15.
The update includes:
- CoreSight trace capture for Panic/Watchdog timeouts
- Fixes to ETM4x driver to synchronize register reads as required by the TRM
- Support for Qualcomm CoreSight TMC Control Unit driver
- Conversion of device locks to raw_spinlock for components that are used
by the Perf mode.
- Miscellaneous fixes for the subsystem
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
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Merge tag 'coresight-next-v6.15' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/coresight/linux into char-misc-next
Suzuki writes:
coresight: updates for Linux v6.15
CoreSight self-hosted tracing driver subsystem update for Linux v6.15.
The update includes:
- CoreSight trace capture for Panic/Watchdog timeouts
- Fixes to ETM4x driver to synchronize register reads as required by the TRM
- Support for Qualcomm CoreSight TMC Control Unit driver
- Conversion of device locks to raw_spinlock for components that are used
by the Perf mode.
- Miscellaneous fixes for the subsystem
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
* tag 'coresight-next-v6.15' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/coresight/linux: (41 commits)
Coresight: Fix a NULL vs IS_ERR() bug in probe
coresight: configfs: Constify struct config_item_type
coresight: docs: Remove target sink from examples
coresight/ultrasoc: change smb_drv_data spinlock's type to raw_spinlock_t
coresight-tmc: change tmc_drvdata spinlock's type to raw_spinlock_t
coresight-replicator: change replicator_drvdata spinlock's type to raw_spinlock_t
coresight-funnel: change funnel_drvdata spinlock's type to raw_spinlock_t
coresight-etb10: change etb_drvdata spinlock's type to raw_spinlock_t
coresight-cti: change cti_drvdata spinlock's type to raw_spinlock_t
coresight: change coresight_trace_id_map's lock type to raw_spinlock_t
coresight-etm4x: change etmv4_drvdata spinlock type to raw_spinlock_t
coresight: change coresight_device lock type to raw_spinlock_t
coresight: add verification process for coresight_etm_get_trace_id
Coresight: Add Coresight TMC Control Unit driver
dt-bindings: arm: Add Coresight TMC Control Unit hardware
Coresight: Change functions to accept the coresight_path
Coresight: Change to read the trace ID from coresight_path
Coresight: Allocate trace ID after building the path
Coresight: Introduce a new struct coresight_path
Coresight: Use coresight_etm_get_trace_id() in traceid_show()
...
With the introduction of the new objects, update the doc to reflect that.
Link: https://patch.msgid.link/r/09829fbc218872d242323d8834da4bec187ce6f4.1741719725.git.nicolinc@nvidia.com
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Add policy and operational documentation for FWCTL CXL.
Link: https://patch.msgid.link/r/20250307205648.1021626-9-dave.jiang@intel.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Remove the cxl driver that provides support for the IBM Coherent
Accelerator Processor Interface. Revert or clean up associated code in
arch/powerpc that is no longer necessary.
cxl has received minimal maintenance for several years, and is not
supported on the Power10 processor. We aren't aware of any users who are
likely to be using recent kernels.
Thanks to Mikey Neuling, Ian Munsie, Daniel Axtens, Frederic Barrat,
Christophe Lombard, Philippe Bergheaud, Vaibhav Jain and Alastair
D'Silva for their work on this driver over the years.
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20250219070007.177725-2-ajd@linux.ibm.com
Following a recent discussion at last Plumbers, John Stultz, Sumit
Sewal, TJ Mercier and I came to an agreement that we should document
what the dma-buf heaps names are expected to be, and what the buffers
attributes you'll get should be documented.
Let's create that doc to make sure those attributes and names are
guaranteed going forward.
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250306135114.1943738-1-mripard@kernel.org
Previously the sink had to be specified, but now it auto selects one by
default. Including a sink in the examples causes issues when copy
pasting the command because it might not work if that sink isn't
present. Remove the sink from all the basic examples and create a new
section specifically about overriding the default one.
Make the text a but more concise now that it's in the advanced section,
and similarly for removing the old kernel advice.
Signed-off-by: James Clark <james.clark@linaro.org>
Reviewed-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20241210144933.295798-1-james.clark@linaro.org
mlx5 FW has a built in security context called UID. Each UID has a set of
permissions controlled by the kernel when it is created and every command
is tagged by the kernel with a particular UID. In general commands cannot
reach objects outside of their UID and commands cannot exceed their UID's
permissions. These restrictions are enforced by FW.
This mechanism has long been used in RDMA for the devx interface where
RDMA will sent commands directly to the FW and the UID limitations
restrict those commands to a ib_device/verbs security domain. For instance
commands that would effect other VFs, or global device resources. The
model is suitable for unprivileged userspace to operate the RDMA
functionality.
The UID has been extended with a "tools resources" permission which allows
additional commands and sub-commands that are intended to match with the
scope limitations set in FWCTL. This is an alternative design to the
"command intent log" where the FW does the enforcement rather than having
the FW report the enforcement the kernel should do.
Consistent with the fwctl definitions the "tools resources" security
context is limited to the FWCTL_RPC_CONFIGURATION,
FWCTL_RPC_DEBUG_READ_ONLY, FWCTL_RPC_DEBUG_WRITE, and
FWCTL_RPC_DEBUG_WRITE_FULL security scopes.
Like RDMA devx, each opened fwctl file descriptor will get a unique UID
associated with each file descriptor.
The fwctl driver is kept simple and we reject commands that can create
objects as the UID mechanism relies on the kernel to track and destroy
objects prior to detroying the UID. Filtering into fwctl sub scopes is
done inside the driver with a switch statement. This substantially limits
what is possible to primarily query functions ad a few limited set
operations.
mlx5 already has a robust infrastructure for delivering RPC messages to
fw. Trivially connect fwctl's RPC mechanism to mlx5_cmd_do(). Enforce the
User Context ID in every RPC header accepted from the FD so the FW knows
the security context of the issuing ID.
Link: https://patch.msgid.link/r/7-v5-642aa0c94070+4447f-fwctl_jgg@nvidia.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Each file descriptor gets a chunk of per-FD driver specific context that
allows the driver to attach a device specific struct to. The core code
takes care of the memory lifetime for this structure.
The ioctl dispatch and design is based on what was built for iommufd. The
ioctls have a struct which has a combined in/out behavior with a typical
'zero pad' scheme for future extension and backwards compatibility.
Like iommufd some shared logic does most of the ioctl marshaling and
compatibility work and table dispatches to some function pointers for
each unique ioctl.
This approach has proven to work quite well in the iommufd and rdma
subsystems.
Allocate an ioctl number space for the subsystem.
Link: https://patch.msgid.link/r/2-v5-642aa0c94070+4447f-fwctl_jgg@nvidia.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Tested-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Added documentation of V4L2_CID_UVC_REGION_OF_INTEREST_RECT and
V4L2_CID_UVC_REGION_OF_INTEREST_AUTO.
An example of a userspace implementing this feature can be found at:
https://chromium.googlesource.com/chromiumos/platform2/+/refs/heads/release-R121-15699.B/camera/hal/usb/
Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Yunke Cao <yunkec@google.com>
Tested-by: Yunke Cao <yunkec@google.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://lore.kernel.org/r/20250203-uvc-roi-v17-17-5900a9fed613@chromium.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Add the capability of retrieving the min and max values of a
compound control.
[Ricardo: Added static to v4l2_ctrl_type_op_(maximum|minimum) proto]
[Ricardo: Fix documentation]
Signed-off-by: Yunke Cao <yunkec@google.com>
Tested-by: Yunke Cao <yunkec@google.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://lore.kernel.org/r/20250203-uvc-roi-v17-2-5900a9fed613@chromium.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
[hverkuil: fix small alignment checkpatch warning]
Add p_rect to struct v4l2_ext_control with basic support in
v4l2-ctrls.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Yunke Cao <yunkec@google.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Tested-by: Yunke Cao <yunkec@google.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://lore.kernel.org/r/20250203-uvc-roi-v17-1-5900a9fed613@chromium.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
* Fix some whitespace, punctuation and minor grammar.
* Add a missing sentence about the minimum ABI version,
to stay in line with the section next to it.
Cc: Tahera Fahimi <fahimitahera@gmail.com>
Cc: Tanya Agarwal <tanyaagarwal25699@gmail.com>
Signed-off-by: Günther Noack <gnoack@google.com>
Link: https://lore.kernel.org/r/20250124154445.162841-1-gnoack@google.com
[mic: Add newlines, update doc date]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Until this point, the kernel can use hardware-wrapped keys to do
encryption if userspace provides one -- specifically a key in
ephemerally-wrapped form. However, no generic way has been provided for
userspace to get such a key in the first place.
Getting such a key is a two-step process. First, the key needs to be
imported from a raw key or generated by the hardware, producing a key in
long-term wrapped form. This happens once in the whole lifetime of the
key. Second, the long-term wrapped key needs to be converted into
ephemerally-wrapped form. This happens each time the key is "unlocked".
In Android, these operations are supported in a generic way through
KeyMint, a userspace abstraction layer. However, that method is
Android-specific and can't be used on other Linux systems, may rely on
proprietary libraries, and also misleads people into supporting KeyMint
features like rollback resistance that make sense for other KeyMint keys
but don't make sense for hardware-wrapped inline encryption keys.
Therefore, this patch provides a generic kernel interface for these
operations by introducing new block device ioctls:
- BLKCRYPTOIMPORTKEY: convert a raw key to long-term wrapped form.
- BLKCRYPTOGENERATEKEY: have the hardware generate a new key, then
return it in long-term wrapped form.
- BLKCRYPTOPREPAREKEY: convert a key from long-term wrapped form to
ephemerally-wrapped form.
These ioctls are implemented using new operations in blk_crypto_ll_ops.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Tested-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> # sm8650
Link: https://lore.kernel.org/r/20250204060041.409950-4-ebiggers@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Remove the cxlflash driver for IBM CAPI Flash devices.
The cxlflash driver has received minimal maintenance for some time, and
the CAPI Flash hardware that uses it is no longer commercially available.
Thanks to Uma Krishnan, Matthew Ochs and Manoj Kumar for their work on
this driver over the years.
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Link: https://lore.kernel.org/r/20250203072801.365551-2-ajd@linux.ibm.com
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Here is the big set of driver core and debugfs updates for 6.14-rc1.
It's coming late in the merge cycle as there are a number of merge
conflicts with your tree now, and I wanted to make sure they were
working properly. To resolve them, look in linux-next, and I will send
the "fixup" patch as a response to the pull request.
Included in here is a bunch of driver core, PCI, OF, and platform rust
bindings (all acked by the different subsystem maintainers), hence the
merge conflict with the rust tree, and some driver core api updates to
mark things as const, which will also require some fixups due to new
stuff coming in through other trees in this merge window.
There are also a bunch of debugfs updates from Al, and there is at least
one user that does have a regression with these, but Al is working on
tracking down the fix for it. In my use (and everyone else's linux-next
use), it does not seem like a big issue at the moment.
Here's a short list of the things in here:
- driver core bindings for PCI, platform, OF, and some i/o functions.
We are almost at the "write a real driver in rust" stage now,
depending on what you want to do.
- misc device rust bindings and a sample driver to show how to use
them
- debugfs cleanups in the fs as well as the users of the fs api for
places where drivers got it wrong or were unnecessarily doing things
in complex ways.
- driver core const work, making more of the api take const * for
different parameters to make the rust bindings easier overall.
- other small fixes and updates
All of these have been in linux-next with all of the aforementioned
merge conflicts, and the one debugfs issue, which looks to be resolved
"soon".
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and debugfs updates from Greg KH:
"Here is the big set of driver core and debugfs updates for 6.14-rc1.
Included in here is a bunch of driver core, PCI, OF, and platform rust
bindings (all acked by the different subsystem maintainers), hence the
merge conflict with the rust tree, and some driver core api updates to
mark things as const, which will also require some fixups due to new
stuff coming in through other trees in this merge window.
There are also a bunch of debugfs updates from Al, and there is at
least one user that does have a regression with these, but Al is
working on tracking down the fix for it. In my use (and everyone
else's linux-next use), it does not seem like a big issue at the
moment.
Here's a short list of the things in here:
- driver core rust bindings for PCI, platform, OF, and some i/o
functions.
We are almost at the "write a real driver in rust" stage now,
depending on what you want to do.
- misc device rust bindings and a sample driver to show how to use
them
- debugfs cleanups in the fs as well as the users of the fs api for
places where drivers got it wrong or were unnecessarily doing
things in complex ways.
- driver core const work, making more of the api take const * for
different parameters to make the rust bindings easier overall.
- other small fixes and updates
All of these have been in linux-next with all of the aforementioned
merge conflicts, and the one debugfs issue, which looks to be resolved
"soon""
* tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (95 commits)
rust: device: Use as_char_ptr() to avoid explicit cast
rust: device: Replace CString with CStr in property_present()
devcoredump: Constify 'struct bin_attribute'
devcoredump: Define 'struct bin_attribute' through macro
rust: device: Add property_present()
saner replacement for debugfs_rename()
orangefs-debugfs: don't mess with ->d_name
octeontx2: don't mess with ->d_parent or ->d_parent->d_name
arm_scmi: don't mess with ->d_parent->d_name
slub: don't mess with ->d_name
sof-client-ipc-flood-test: don't mess with ->d_name
qat: don't mess with ->d_name
xhci: don't mess with ->d_iname
mtu3: don't mess wiht ->d_iname
greybus/camera - stop messing with ->d_iname
mediatek: stop messing with ->d_iname
netdevsim: don't embed file_operations into your structs
b43legacy: make use of debugfs_get_aux()
b43: stop embedding struct file_operations into their objects
carl9170: stop embedding file_operations into their objects
...
Here is the "big" set of char/misc/iio and other smaller driver
subsystem updates for 6.14-rc1. Loads of different things in here this
development cycle, highlights are:
- ntsync "driver" to handle Windows locking types enabling Wine to
work much better on many workloads (i.e. games). The driver
framework was in 6.13, but now it's enabled and fully working
properly. Should make many SteamOS users happy. Even comes with
tests!
- Large IIO driver updates and bugfixes
- FPGA driver updates
- Coresight driver updates
- MHI driver updates
- PPS driver updatesa
- const bin_attribute reworking for many drivers
- binder driver updates
- smaller driver updates and fixes
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull Char/Misc/IIO driver updates from Greg KH:
"Here is the "big" set of char/misc/iio and other smaller driver
subsystem updates for 6.14-rc1. Loads of different things in here this
development cycle, highlights are:
- ntsync "driver" to handle Windows locking types enabling Wine to
work much better on many workloads (i.e. games). The driver
framework was in 6.13, but now it's enabled and fully working
properly. Should make many SteamOS users happy. Even comes with
tests!
- Large IIO driver updates and bugfixes
- FPGA driver updates
- Coresight driver updates
- MHI driver updates
- PPS driver updatesa
- const bin_attribute reworking for many drivers
- binder driver updates
- smaller driver updates and fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (311 commits)
ntsync: Fix reference leaks in the remaining create ioctls.
spmi: hisi-spmi-controller: Drop duplicated OF node assignment in spmi_controller_probe()
spmi: Set fwnode for spmi devices
ntsync: fix a file reference leak in drivers/misc/ntsync.c
scripts/tags.sh: Don't tag usages of DECLARE_BITMAP
dt-bindings: interconnect: qcom,msm8998-bwmon: Add SM8750 CPU BWMONs
dt-bindings: interconnect: OSM L3: Document sm8650 OSM L3 compatible
dt-bindings: interconnect: qcom-bwmon: Document QCS615 bwmon compatibles
interconnect: sm8750: Add missing const to static qcom_icc_desc
memstick: core: fix kernel-doc notation
intel_th: core: fix kernel-doc warnings
binder: log transaction code on failure
iio: dac: ad3552r-hs: clear reset status flag
iio: dac: ad3552r-common: fix ad3541/2r ranges
iio: chemical: bme680: Fix uninitialized variable in __bme680_read_raw()
misc: fastrpc: Fix copy buffer page size
misc: fastrpc: Fix registered buffer page address
misc: fastrpc: Deregister device nodes properly in error scenarios
nvmem: core: improve range check for nvmem_cell_write()
nvmem: qcom-spmi-sdam: Set size in struct nvmem_config
...
Highlights:
- acer-wmi:
- Add support for PH14-51, PH16-72, and Nitro AN515-58
- Add proper hwmon support
- Improve error handling when reading "gaming system info"
- Replace direct EC reads for the current platform profile
with WMI calls to handle EC address variations
- Replace custom platform_profile cycling with the generic one
- ACPI: platform_profile: Major refactoring and improvements
- Support registering multiple platform_profile handlers
concurrently to avoid the need to quirk which handler takes
precedence
- Support reporting "custom" profile for cases where the current
profile is ambiguous or when settings tweaks are done outside
the pre-defined profile
- Abstract and layer platform_profile API better using the
class_dev and drvdata
- Various minor improvements
- Add Documentation and kerneldoc
- amd/hsmp: Add support for HSMP protocol v7
- amd/pmc:
- Support AMD 1Ah family 70h
- Support STB with Ryzen desktop SoCs
- amd/pmf:
- Support Custom BIOS inputs for PMF TA
- Support passing SRA sensor data from AMD SFH (HID) to PMF TA
- dell-smo8800:
- Move SMO88xx quirk away from the generic i2c-i801 driver
- Add accelerometer support for Dell Latitude E6330/E6430 and
XPS 9550
- Support probing accelerometer for models yet to be listed in
the DMI mapping table because ACPI lacks i2c-address for the
accelerometer (behind a module parameter because probing might
be dangerous)
- HID: amd_sfh: Add support for exporting SRA sensor data
- hp-wmi: Add fan and thermal support for Victus 16-s1000
- input: Add key for phone linking
- input: i8042: Add context for the i8042 filter to enable cleaning up
the filter related global variables from pdx86 drivers
- lenovo-wmi-camera: Use SW_CAMERA_LENS_COVER instead of
KEY_CAMERA_ACCESS
- mellanox: mlxbf-pmc:
- Add support for monitoring cycle count
- Add Documentation
- thinkpad_acpi: Add support for phone link key
- tools/power/x86/intel-speed-select: Fix Turbo Ratio Limit restore
- x86-android-tables: Add support for Vexia EDU ATLA 10 Bluetooth and
EC battery driver
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
acer-wmi:
- add support for Acer Nitro AN515-58
- Add support for Acer PH14-51
- Add support for Acer Predator PH16-72
- Fix initialization of last_non_turbo_profile
- Ignore AC events
- Implement proper hwmon support
- Improve error handling when reading gaming system information
- Rename ACER_CAP_FAN_SPEED_READ
- simplify platform profile cycling
- use an ACPI bitmap to set the platform profile choices
- Use devm_platform_profile_register()
- use new helper function for setting overclocks
- use WMI calls for platform profile handling
ACPI: platform-profile:
- Add a name member to handlers
ACPI: platform_profile:
- Add a prefix to log messages
- Add choices attribute for class interface
- Add concept of a "custom" profile
- Add device pointer into platform profile handler
- Add devm_platform_profile_register()
- Add documentation
- Add name attribute to class interface
- Add `ops` member to handlers
- Add platform handler argument to platform_profile_remove()
- Add `probe` to platform_profile_ops
- Add profile attribute for class interface
- Allow multiple handlers
- Check all profile handler to calculate next
- Clean platform_profile_handler
- Create class for ACPI platform profile
- Let drivers set drvdata to the class device
- Make sure all profile handlers agree on profile
- Move matching string for new profile out of mutex
- Move platform_profile_handler
- Move sanity check out of the mutex
- Notify change events on register and unregister
- Notify class device from platform_profile_notify()
- Only show profiles common for all handlers
- Pass the profile handler into platform_profile_notify()
- Remove platform_profile_handler from callbacks
- Remove platform_profile_handler from exported symbols
- Replace *class_dev member with class_dev
- Use guard(mutex) for register/unregister
- Use `scoped_cond_guard`
alienware_wmi:
- General cleanup of WMAX methods
alienware-wmi:
- Improve hdmi_mux, amplifier and deepslp group creation
- Improve rgb-zones group creation
- Modify parse_rgb() signature
- Move Lighting Control State
- Remove unnecessary check at module exit
- Use devm_platform_profile_register()
amd/hsmp:
- Add support for HSMP protocol version 7 messages
- Constify 'struct bin_attribute'
amd/pmc:
- Add STB support for AMD Desktop variants
- Define enum for S2D/PMC msg_port and add helper function
- Isolate STB code changes to a new file
- Move STB block into amd_pmc_s2d_init()
- Move STB functionality to a new file for better code organization
- Update function names to align with new STB file
- Update IP information structure for newer SoCs
- Update S2D message id for 1Ah Family 70h model
- Use ARRAY_SIZE() to fill num_ips information
amd: pmc:
- Use guard(mutex)
amd: pmf:
- Drop all quirks
amd/pmf:
- Enable Custom BIOS Inputs for PMF-TA
- Get SRA sensor data from AMD SFH driver
amd: pmf: sps:
- Use devm_platform_profile_register()
amd: pmf:
- Switch to guard(mutex)
asus-wmi:
- Use devm_platform_profile_register()
dell: dcdbas:
- Constify 'struct bin_attribute'
dell: dell-pc:
- Create platform device
dell-pc:
- Use devm_platform_profile_register()
dell_rbu:
- Constify 'struct bin_attribute'
dell-smo8800:
- Add a couple more models to lis3lv02d_devices[]
- Add support for probing for the accelerometer i2c address
- Move instantiation of lis3lv02d i2c_client from i2c-i801 to dell-lis3lv02d
- Move SMO88xx acpi_device_ids to dell-smo8800-ids.h
dell-sysman:
- Directly use firmware_attributes_class
dell-uart-backlight:
- Use blacklight power constant
docs: platform/x86: wmi:
- mention tool for invoking WMI methods
Documentation/ABI:
- Add document for Mellanox PMC driver
- Add new sysfs field to sysfs-platform-mellanox-pmc
Documentation:
- Add documentation about class interface for platform profiles
firmware_attributes_class:
- Drop lifecycle functions
- Move include linux/device/class.h
- Simplify API
fujitsu-laptop:
- replace strcpy -> strscpy
HID: amd_sfh:
- Add support to export device operating states
hp-bioscfg:
- Directly use firmware_attributes_class
hp-wmi:
- Add fan and thermal profile support for Victus 16-s1000
- Use devm_platform_profile_register()
ideapad-laptop:
- Use devm_platform_profile_register()
Input:
- allocate keycode for phone linking
- i8042 - Add support for platform filter contexts
inspur_platform_profile:
- Use devm_platform_profile_register()
int3472:
- Check for adev == NULL
- Debug log the sensor name
- Fix skl_int3472_handle_gpio_resources() return value
- Make "pin number mismatch" message a debug message
intel: bytcrc_pwrsrc:
- fix power_supply dependency
- Optionally register a power_supply dev
intel: int0002_vgpio:
- Make the irqchip immutable
intel/pmt:
- Constify 'struct bin_attribute'
intel: punit_ipc:
- Remove unused function
intel/sdsi:
- Constify 'struct bin_attribute'
intel/tpmi/plr:
- Make char[] longer to silence warning
lenovo-wmi-camera:
- Use SW_CAMERA_LENS_COVER instead of KEY_CAMERA_ACESS
MAINTAINERS:
- Change AMD PMC driver status to "Supported"
mlxbf-bootctl:
- Constify 'struct bin_attribute'
- use sysfs_emit() instead of sprintf()
mlxbf-pmc:
- Add support for clock_measure performance block
- Add support for monitoring cycle count
- incorrect type in assignment
mlxreg-hotplug:
- use sysfs_emit() instead of sprintf()
mlxreg-io:
- use sysfs_emit() instead of sprintf()
quickstart:
- don't include 'pm_wakeup.h' directly
serdev_helpers:
- Add get_serdev_controller_from_parent() helper
- Check for serial_ctrl_uid == NULL
surface: surface_platform_profile:
- Use devm_platform_profile_register()
think-lmi:
- Directly use firmware_attributes_class
thinkpad_acpi:
- Add support for new phone link hotkey
thinkpad-acpi:
- replace strcpy with strscpy
thinkpad_acpi:
- Use devm_platform_profile_register()
tools/power/x86/intel-speed-select:
- Fix TRL restore after SST-TF disable
- v1.21 release
wmi-bmof:
- Make use of .bin_size() callback
x86-android-tablets:
- Add Bluetooth support for Vexia EDU ATLA 10
- Add missing __init to get_i2c_adap_by_*()
- Add support for getting serdev-controller by PCI parent
- Add Vexia EDU ATLA 10 EC battery driver
- Change x86_instantiate_serdev() prototype
- make platform data be static
- Make variables only used locally static
- Store serdev-controller ACPI HID + UID in a union
Merges:
- Merge branch 'fixes' into 'for-next'
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into review-ilpo-next
- Merge branch 'platform-drivers-x86-platform-profile' into for-next
- Merge branch 'platform-drivers-x86-platform-profile' into for-next
- Merge import NS conversion from 'https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git' into for-next
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Merge tag 'platform-drivers-x86-v6.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
"acer-wmi:
- Add support for PH14-51, PH16-72, and Nitro AN515-58
- Add proper hwmon support
- Improve error handling when reading "gaming system info"
- Replace direct EC reads for the current platform profile with WMI
calls to handle EC address variations
- Replace custom platform_profile cycling with the generic one
ACPI:
- platform_profile: Major refactoring and improvements
- Support registering multiple platform_profile handlers concurrently
to avoid the need to quirk which handler takes precedence
- Support reporting "custom" profile for cases where the current
profile is ambiguous or when settings tweaks are done outside the
pre-defined profile
- Abstract and layer platform_profile API better using the class_dev
and drvdata
- Various minor improvements
- Add Documentation and kerneldoc
amd/hsmp:
- Add support for HSMP protocol v7
amd/pmc:
- Support AMD 1Ah family 70h
- Support STB with Ryzen desktop SoCs
amd/pmf:
- Support Custom BIOS inputs for PMF TA
- Support passing SRA sensor data from AMD SFH (HID) to PMF TA
dell-smo8800:
- Move SMO88xx quirk away from the generic i2c-i801 driver
- Add accelerometer support for Dell Latitude E6330/E6430 and XPS
9550
- Support probing accelerometer for models yet to be listed in the
DMI mapping table because ACPI lacks i2c-address for the
accelerometer (behind a module parameter because probing might be
dangerous)
HID:
- amd_sfh: Add support for exporting SRA sensor data
hp-wmi:
- Add fan and thermal support for Victus 16-s1000
input:
- Add key for phone linking
- i8042: Add context for the i8042 filter to enable cleaning up the
filter related global variables from pdx86 drivers
lenovo-wmi-camera:
- Use SW_CAMERA_LENS_COVER instead of KEY_CAMERA_ACCESS
mellanox mlxbf-pmc:
- Add support for monitoring cycle count
- Add Documentation
thinkpad_acpi:
- Add support for phone link key
tools/power/x86/intel-speed-select:
- Fix Turbo Ratio Limit restore
x86-android-tables:
- Add support for Vexia EDU ATLA 10 Bluetooth and EC battery driver
And miscellaneous cleanups / refactoring / improvements"
* tag 'platform-drivers-x86-v6.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (133 commits)
platform/x86: acer-wmi: Fix initialization of last_non_turbo_profile
platform/x86: acer-wmi: Ignore AC events
platform/mellanox: mlxreg-io: use sysfs_emit() instead of sprintf()
platform/mellanox: mlxreg-hotplug: use sysfs_emit() instead of sprintf()
platform/mellanox: mlxbf-bootctl: use sysfs_emit() instead of sprintf()
platform/x86: hp-wmi: Add fan and thermal profile support for Victus 16-s1000
ACPI: platform_profile: Add a prefix to log messages
ACPI: platform_profile: Add documentation
ACPI: platform_profile: Clean platform_profile_handler
ACPI: platform_profile: Move platform_profile_handler
ACPI: platform_profile: Remove platform_profile_handler from exported symbols
platform/x86: thinkpad_acpi: Use devm_platform_profile_register()
platform/x86: inspur_platform_profile: Use devm_platform_profile_register()
platform/x86: hp-wmi: Use devm_platform_profile_register()
platform/x86: ideapad-laptop: Use devm_platform_profile_register()
platform/x86: dell-pc: Use devm_platform_profile_register()
platform/x86: asus-wmi: Use devm_platform_profile_register()
platform/x86: amd: pmf: sps: Use devm_platform_profile_register()
platform/x86: acer-wmi: Use devm_platform_profile_register()
platform/surface: surface_platform_profile: Use devm_platform_profile_register()
...
- Implement AT_EXECVE_CHECK flag to execveat(2) (Mickaël Salaün)
- Implement EXEC_RESTRICT_FILE and EXEC_DENY_INTERACTIVE securebits
(Mickaël Salaün)
- Add selftests and samples for AT_EXECVE_CHECK (Mickaël Salaün)
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Merge tag 'AT_EXECVE_CHECK-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull AT_EXECVE_CHECK from Kees Cook:
- Implement AT_EXECVE_CHECK flag to execveat(2) (Mickaël Salaün)
- Implement EXEC_RESTRICT_FILE and EXEC_DENY_INTERACTIVE securebits
(Mickaël Salaün)
- Add selftests and samples for AT_EXECVE_CHECK (Mickaël Salaün)
* tag 'AT_EXECVE_CHECK-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
ima: instantiate the bprm_creds_for_exec() hook
samples/check-exec: Add an enlighten "inc" interpreter and 28 tests
selftests: ktap_helpers: Fix uninitialized variable
samples/check-exec: Add set-exec
selftests/landlock: Add tests for execveat + AT_EXECVE_CHECK
selftests/exec: Add 32 tests for AT_EXECVE_CHECK and exec securebits
security: Add EXEC_RESTRICT_FILE and EXEC_DENY_INTERACTIVE securebits
exec: Add a new AT_EXECVE_CHECK flag to execveat(2)
Commit 86b525bed2 ("drivers pps: add PPS generators support") adds a file
entry in MAINTAINERS and a reference in the ioctl-number documentation
referring to the file pps-gen.h, whereas the file added in this commit is
named pps_gen.h.
Adjust the two references to the actual name of the uapi header file.
While at it, put the entry in MAINTAINERS at the right place for
alphabetical ordering.
Fixes: 86b525bed2 ("drivers pps: add PPS generators support")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Link: https://lore.kernel.org/r/20250110105000.56228-1-lukas.bulwahn@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move python code to a separate directory so it can be
packaged as a python module. Updates existing references
in selftests and docs.
Also rename ynl-gen-[c|rst] to ynl_gen_[c|rst], avoid
dashes as these prevent easy imports for entrypoints.
Signed-off-by: Jan Stancek <jstancek@redhat.com>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/a4151bad0e6984e7164d395125ce87fd2e048bf1.1736343575.git.jstancek@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add an overall explanation of the driver architecture, and complete and precise
specification for its intended behaviour.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
Link: https://lore.kernel.org/r/20241213193511.457338-30-zfigura@codeweavers.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sometimes one needs to be able not only to catch PPS signals but to
produce them also. For example, running a distributed simulation,
which requires computers' clock to be synchronized very tightly.
This patch adds PPS generators class in order to have a well-defined
interface for these devices.
Signed-off-by: Rodolfo Giometti <giometti@enneenne.com>
Link: https://lore.kernel.org/r/20241108073115.759039-2-giometti@enneenne.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The new SECBIT_EXEC_RESTRICT_FILE, SECBIT_EXEC_DENY_INTERACTIVE, and
their *_LOCKED counterparts are designed to be set by processes setting
up an execution environment, such as a user session, a container, or a
security sandbox. Unlike other securebits, these ones can be set by
unprivileged processes. Like seccomp filters or Landlock domains, the
securebits are inherited across processes.
When SECBIT_EXEC_RESTRICT_FILE is set, programs interpreting code should
control executable resources according to execveat(2) + AT_EXECVE_CHECK
(see previous commit).
When SECBIT_EXEC_DENY_INTERACTIVE is set, a process should deny
execution of user interactive commands (which excludes executable
regular files).
Being able to configure each of these securebits enables system
administrators or owner of image containers to gradually validate the
related changes and to identify potential issues (e.g. with interpreter
or audit logs).
It should be noted that unlike other security bits, the
SECBIT_EXEC_RESTRICT_FILE and SECBIT_EXEC_DENY_INTERACTIVE bits are
dedicated to user space willing to restrict itself. Because of that,
they only make sense in the context of a trusted environment (e.g.
sandbox, container, user session, full system) where the process
changing its behavior (according to these bits) and all its parent
processes are trusted. Otherwise, any parent process could just execute
its own malicious code (interpreting a script or not), or even enforce a
seccomp filter to mask these bits.
Such a secure environment can be achieved with an appropriate access
control (e.g. mount's noexec option, file access rights, LSM policy) and
an enlighten ld.so checking that libraries are allowed for execution
e.g., to protect against illegitimate use of LD_PRELOAD.
Ptrace restrictions according to these securebits would not make sense
because of the processes' trust assumption.
Scripts may need some changes to deal with untrusted data (e.g. stdin,
environment variables), but that is outside the scope of the kernel.
See chromeOS's documentation about script execution control and the
related threat model:
https://www.chromium.org/chromium-os/developer-library/guides/security/noexec-shell-scripts/
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Paul Moore <paul@paul-moore.com>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Reviewed-by: Jeff Xu <jeffxu@chromium.org>
Tested-by: Jeff Xu <jeffxu@chromium.org>
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Link: https://lore.kernel.org/r/20241212174223.389435-3-mic@digikod.net
Signed-off-by: Kees Cook <kees@kernel.org>
Add a new AT_EXECVE_CHECK flag to execveat(2) to check if a file would
be allowed for execution. The main use case is for script interpreters
and dynamic linkers to check execution permission according to the
kernel's security policy. Another use case is to add context to access
logs e.g., which script (instead of interpreter) accessed a file. As
any executable code, scripts could also use this check [1].
This is different from faccessat(2) + X_OK which only checks a subset of
access rights (i.e. inode permission and mount options for regular
files), but not the full context (e.g. all LSM access checks). The main
use case for access(2) is for SUID processes to (partially) check access
on behalf of their caller. The main use case for execveat(2) +
AT_EXECVE_CHECK is to check if a script execution would be allowed,
according to all the different restrictions in place. Because the use
of AT_EXECVE_CHECK follows the exact kernel semantic as for a real
execution, user space gets the same error codes.
An interesting point of using execveat(2) instead of openat2(2) is that
it decouples the check from the enforcement. Indeed, the security check
can be logged (e.g. with audit) without blocking an execution
environment not yet ready to enforce a strict security policy.
LSMs can control or log execution requests with
security_bprm_creds_for_exec(). However, to enforce a consistent and
complete access control (e.g. on binary's dependencies) LSMs should
restrict file executability, or measure executed files, with
security_file_open() by checking file->f_flags & __FMODE_EXEC.
Because AT_EXECVE_CHECK is dedicated to user space interpreters, it
doesn't make sense for the kernel to parse the checked files, look for
interpreters known to the kernel (e.g. ELF, shebang), and return ENOEXEC
if the format is unknown. Because of that, security_bprm_check() is
never called when AT_EXECVE_CHECK is used.
It should be noted that script interpreters cannot directly use
execveat(2) (without this new AT_EXECVE_CHECK flag) because this could
lead to unexpected behaviors e.g., `python script.sh` could lead to Bash
being executed to interpret the script. Unlike the kernel, script
interpreters may just interpret the shebang as a simple comment, which
should not change for backward compatibility reasons.
Because scripts or libraries files might not currently have the
executable permission set, or because we might want specific users to be
allowed to run arbitrary scripts, the following patch provides a dynamic
configuration mechanism with the SECBIT_EXEC_RESTRICT_FILE and
SECBIT_EXEC_DENY_INTERACTIVE securebits.
This is a redesign of the CLIP OS 4's O_MAYEXEC:
f5cb330d6b/1901_open_mayexec.patch
This patch has been used for more than a decade with customized script
interpreters. Some examples can be found here:
https://github.com/clipos-archive/clipos4_portage-overlay/search?q=O_MAYEXEC
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Acked-by: Paul Moore <paul@paul-moore.com>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Reviewed-by: Jeff Xu <jeffxu@chromium.org>
Tested-by: Jeff Xu <jeffxu@chromium.org>
Link: https://docs.python.org/3/library/io.html#io.open_code [1]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Link: https://lore.kernel.org/r/20241212174223.389435-2-mic@digikod.net
Signed-off-by: Kees Cook <kees@kernel.org>
32 IDs should be plenty (at yet, not too greedy) since a lot of sample
drivers will use their own subsystem allocations.
Sample drivers predominately reside in <KERNEL_ROOT>/samples, but there
should be no issue with in-place example drivers using them.
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20241213134715.601415-2-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The class interface allows changing multiple platform profiles on a system
to different values. The semantics of it are similar to the legacy
interface.
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20241206031918.1537-23-mario.limonciello@amd.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This is similar to existing attr-cnt-name in the attributes
to allow changing the name of the 'count' enum entry.
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241204155549.641348-2-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
core:
- split DSC helpers from DP helpers
- clang build fixes for drm/mm test
- drop simple pipeline support for gem vram
- document submission error signaling
- move drm_rect to drm core module from kms helper
- add default client setup to most drivers
- move to video aperture helpers instead of drm ones
tests:
- new framebuffer tests
ttm:
- remove swapped and pinned BOs from TTM lru
panic:
- fix uninit spinlock
- add ABGR2101010 support
bridge:
- add TI TDP158 support
- use standard PM OPS
dma-fence:
- use read_trylock instead of read_lock to help lockdep
scheduler:
- add errno to sched start to report different errors
- add locking to drm_sched_entity_modify_sched
- improve documentation
xe:
- add drm_line_printer
- lots of refactoring
- Enable Xe2 + PES disaggregation
- add new ARL PCI ID
- SRIOV development work
- fix exec unnecessary implicit fence
- define and parse OA sync props
- forcewake refactoring
i915:
- Enable BMG/LNL ultra joiner
- Enable 10bpx + CCS scanout on ICL+, fp16/CCS on TGL+
- use DSB for plane/color mgmt
- Arrow lake PCI IDs
- lots of i915/xe display refactoring
- enable PXP GuC autoteardown
- Pantherlake (PTL) Xe3 LPD display enablement
- Allow fastset HDR infoframe changes
- write DP source OUI for non-eDP sinks
- share PCI IDs between i915 and xe
amdgpu:
- SDMA queue reset support
- SMU 13.0.6, JPEG 4.0.3 updates
- Initial runtime repartitioning support
- rework IP structs for multiple IP instances
- Fetch EDID from _DDC if available
- SMU13 zero rpm user control
- lots of fixes/cleanups
amdkfd:
- Increase event FIFO size
- add topology cap flag for per queue reset
msm:
- DPU:
- SA8775P support
- (disabled by default) MSM8917, MSM8937, MSM8953 and MSM8996 support
- Enable large framebuffer support
- Drop MSM8998 and SDM845
- DP:
- SA8775P support
- GPU:
- a7xx preemption support
- Adreno A663 support
ast:
- warn about unsupported TX chips
ivpu:
- add coredump
- add pantherlake support
rockchip:
- 4K@60Hz display enablement
- generate pll programming tables
panthor:
- add timestamp query API
- add realtime group priority
- add fdinfo support
etnaviv:
- improve handling of DMA address limits
- improve GPU hangcheck
exynos:
- Decon Exynos7870 support
mediatek:
- add OF graph support
omap:
- locking fixes
bochs:
- convert to gem/shmem from simpledrm
v3d:
- support big/super pages
- add gemfs
vc4:
- BCM2712 support refactoring
- add YUV444 format support
udmabuf:
- folio related fixes
nouveau:
- add panic support on nv50+
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Merge tag 'drm-next-2024-11-21' of https://gitlab.freedesktop.org/drm/kernel
Pull drm updates from Dave Airlie:
"There's a lot of rework, the panic helper support is being added to
more drivers, v3d gets support for HW superpages, scheduler
documentation, drm client and video aperture reworks, some new
MAINTAINERS added, amdgpu has the usual lots of IP refactors, Intel
has some Pantherlake enablement and xe is getting some SRIOV bits, but
just lots of stuff everywhere.
core:
- split DSC helpers from DP helpers
- clang build fixes for drm/mm test
- drop simple pipeline support for gem vram
- document submission error signaling
- move drm_rect to drm core module from kms helper
- add default client setup to most drivers
- move to video aperture helpers instead of drm ones
tests:
- new framebuffer tests
ttm:
- remove swapped and pinned BOs from TTM lru
panic:
- fix uninit spinlock
- add ABGR2101010 support
bridge:
- add TI TDP158 support
- use standard PM OPS
dma-fence:
- use read_trylock instead of read_lock to help lockdep
scheduler:
- add errno to sched start to report different errors
- add locking to drm_sched_entity_modify_sched
- improve documentation
xe:
- add drm_line_printer
- lots of refactoring
- Enable Xe2 + PES disaggregation
- add new ARL PCI ID
- SRIOV development work
- fix exec unnecessary implicit fence
- define and parse OA sync props
- forcewake refactoring
i915:
- Enable BMG/LNL ultra joiner
- Enable 10bpx + CCS scanout on ICL+, fp16/CCS on TGL+
- use DSB for plane/color mgmt
- Arrow lake PCI IDs
- lots of i915/xe display refactoring
- enable PXP GuC autoteardown
- Pantherlake (PTL) Xe3 LPD display enablement
- Allow fastset HDR infoframe changes
- write DP source OUI for non-eDP sinks
- share PCI IDs between i915 and xe
amdgpu:
- SDMA queue reset support
- SMU 13.0.6, JPEG 4.0.3 updates
- Initial runtime repartitioning support
- rework IP structs for multiple IP instances
- Fetch EDID from _DDC if available
- SMU13 zero rpm user control
- lots of fixes/cleanups
amdkfd:
- Increase event FIFO size
- add topology cap flag for per queue reset
msm:
- DPU:
- SA8775P support
- (disabled by default) MSM8917, MSM8937, MSM8953 and MSM8996 support
- Enable large framebuffer support
- Drop MSM8998 and SDM845
- DP:
- SA8775P support
- GPU:
- a7xx preemption support
- Adreno A663 support
ast:
- warn about unsupported TX chips
ivpu:
- add coredump
- add pantherlake support
rockchip:
- 4K@60Hz display enablement
- generate pll programming tables
panthor:
- add timestamp query API
- add realtime group priority
- add fdinfo support
etnaviv:
- improve handling of DMA address limits
- improve GPU hangcheck
exynos:
- Decon Exynos7870 support
mediatek:
- add OF graph support
omap:
- locking fixes
bochs:
- convert to gem/shmem from simpledrm
v3d:
- support big/super pages
- add gemfs
vc4:
- BCM2712 support refactoring
- add YUV444 format support
udmabuf:
- folio related fixes
nouveau:
- add panic support on nv50+"
* tag 'drm-next-2024-11-21' of https://gitlab.freedesktop.org/drm/kernel: (1583 commits)
drm/xe/guc: Fix dereference before NULL check
drm/amd: Fix initialization mistake for NBIO 7.7.0
Revert "drm/amd/display: parse umc_info or vram_info based on ASIC"
drm/amd/display: Fix failure to read vram info due to static BP_RESULT
drm/amdgpu: enable GTT fallback handling for dGPUs only
drm/amd/amdgpu: limit single process inside MES
drm/fourcc: add AMD_FMT_MOD_TILE_GFX9_4K_D_X
drm/amdgpu/mes12: correct kiq unmap latency
drm/amdgpu: Support vcn and jpeg error info parsing
drm/amd : Update MES API header file for v11 & v12
drm/amd/amdkfd: add/remove kfd queues on start/stop KFD scheduling
drm/amdkfd: change kfd process kref count at creation
drm/amdgpu: Cleanup shift coding style
drm/amd/amdgpu: Increase MES log buffer to dump mes scratch data
drm/amdgpu: Implement virt req_ras_err_count
drm/amdgpu: VF Query RAS Caps from Host if supported
drm/amdgpu: Add msg handlers for SRIOV RAS Telemetry
drm/amdgpu: Update SRIOV Exchange Headers for RAS Telemetry Support
drm/amd/display: 3.2.309
drm/amd/display: Adjust VSDB parser for replay feature
...
Several new features and uAPI for iommufd:
- IOMMU_IOAS_MAP_FILE allows passing in a file descriptor as the backing
memory for an iommu mapping. To date VFIO/iommufd have used VMA's and
pin_user_pages(), this now allows using memfds and memfd_pin_folios().
Notably this creates a pure folio path from the memfd to the iommu page
table where memory is never broken down to PAGE_SIZE.
- IOMMU_IOAS_CHANGE_PROCESS moves the pinned page accounting between two
processes. Combined with the above this allows iommufd to support a VMM
re-start using exec() where something like qemu would exec() a new
version of itself and fd pass the memfds/iommufd/etc to the new
process. The memfd allows DMA access to the memory to continue while
the new process is getting setup, and the CHANGE_PROCESS updates all
the accounting.
- Support for fault reporting to userspace on non-PRI HW, such as ARM
stall-mode embedded devices.
- IOMMU_VIOMMU_ALLOC introduces the concept of a HW/driver backed virtual
iommu. This will be used by VMMs to access hardware features that are
contained with in a VM. The first use is to inform the kernel of the
virtual SID to physical SID mapping when issuing SID based invalidation
on ARM. Further uses will tie HW features that are directly accessed by
the VM, such as invalidation queue assignment and others.
- IOMMU_VDEVICE_ALLOC informs the kernel about the mapping of virtual
device to physical device within a VIOMMU. Minimially this is used to
translate VM issued cache invalidation commands from virtual to physical
device IDs.
- Enhancements to IOMMU_HWPT_INVALIDATE and IOMMU_HWPT_ALLOC to work with
the VIOMMU
- ARM SMMuv3 support for nested translation. Using the VIOMMU and VDEVICE
the driver can model this HW's behavior for nested translation. This
includes a shared branch from Will.
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe:
"Several new features and uAPI for iommufd:
- IOMMU_IOAS_MAP_FILE allows passing in a file descriptor as the
backing memory for an iommu mapping. To date VFIO/iommufd have used
VMA's and pin_user_pages(), this now allows using memfds and
memfd_pin_folios(). Notably this creates a pure folio path from the
memfd to the iommu page table where memory is never broken down to
PAGE_SIZE.
- IOMMU_IOAS_CHANGE_PROCESS moves the pinned page accounting between
two processes. Combined with the above this allows iommufd to
support a VMM re-start using exec() where something like qemu would
exec() a new version of itself and fd pass the memfds/iommufd/etc
to the new process. The memfd allows DMA access to the memory to
continue while the new process is getting setup, and the
CHANGE_PROCESS updates all the accounting.
- Support for fault reporting to userspace on non-PRI HW, such as ARM
stall-mode embedded devices.
- IOMMU_VIOMMU_ALLOC introduces the concept of a HW/driver backed
virtual iommu. This will be used by VMMs to access hardware
features that are contained with in a VM. The first use is to
inform the kernel of the virtual SID to physical SID mapping when
issuing SID based invalidation on ARM. Further uses will tie HW
features that are directly accessed by the VM, such as invalidation
queue assignment and others.
- IOMMU_VDEVICE_ALLOC informs the kernel about the mapping of virtual
device to physical device within a VIOMMU. Minimially this is used
to translate VM issued cache invalidation commands from virtual to
physical device IDs.
- Enhancements to IOMMU_HWPT_INVALIDATE and IOMMU_HWPT_ALLOC to work
with the VIOMMU
- ARM SMMuv3 support for nested translation. Using the VIOMMU and
VDEVICE the driver can model this HW's behavior for nested
translation. This includes a shared branch from Will"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (51 commits)
iommu/arm-smmu-v3: Import IOMMUFD module namespace
iommufd: IOMMU_IOAS_CHANGE_PROCESS selftest
iommufd: Add IOMMU_IOAS_CHANGE_PROCESS
iommufd: Lock all IOAS objects
iommufd: Export do_update_pinned
iommu/arm-smmu-v3: Support IOMMU_HWPT_INVALIDATE using a VIOMMU object
iommu/arm-smmu-v3: Allow ATS for IOMMU_DOMAIN_NESTED
iommu/arm-smmu-v3: Use S2FWB for NESTED domains
iommu/arm-smmu-v3: Support IOMMU_DOMAIN_NESTED
iommu/arm-smmu-v3: Support IOMMU_VIOMMU_ALLOC
Documentation: userspace-api: iommufd: Update vDEVICE
iommufd/selftest: Add vIOMMU coverage for IOMMU_HWPT_INVALIDATE ioctl
iommufd/selftest: Add IOMMU_TEST_OP_DEV_CHECK_CACHE test command
iommufd/selftest: Add mock_viommu_cache_invalidate
iommufd/viommu: Add iommufd_viommu_find_dev helper
iommu: Add iommu_copy_struct_from_full_user_array helper
iommufd: Allow hwpt_id to carry viommu_id for IOMMU_HWPT_INVALIDATE
iommu/viommu: Add cache_invalidate to iommufd_viommu_ops
iommufd/selftest: Add IOMMU_VDEVICE_ALLOC test coverage
iommufd/viommu: Add IOMMUFD_OBJ_VDEVICE and IOMMU_VDEVICE_ALLOC ioctl
...
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Merge tag 'reiserfs_delete' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull reiserfs removal from Jan Kara:
"The deprecation period of reiserfs is ending at the end of this year
so it is time to remove it"
* tag 'reiserfs_delete' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
reiserfs: The last commit
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Merge tag 'media/v6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- removal of the old omap4iss media driver
- mantis: remove orphan mantis_core.h
- add support for Raspberypi CFE
- uvc driver got a co-maintainer
- main media tree moved to git://linuxtv.org/media.git
- lots of driver cleanups, updates and fixes
* tag 'media/v6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (233 commits)
docs: media: update location of the media patches
MAINTAINERS: update location of media main tree
media: MAINTAINERS: Add Hans de Goede as USB VIDEO CLASS co-maintainer
media: platform: samsung: s5p-jpeg: Remove deadcode
media: qcom: camss: Add MSM8953 resources
media: dt-bindings: Add qcom,msm8953-camss
media: qcom: camss: implement pm domain ops for VFE v4.1
media: platform: exynos4-is: Fix an OF node reference leak in fimc_md_is_isp_available
media: adv7180: Also check for "adi,force-bt656-4"
media: dt-bindings: adv7180: Document 'adi,force-bt656-4'
media: mgb4: Fix inconsistent input/output alignment in loopback mode
media: replace obsolete hans.verkuil@cisco.com alias
Documentation: media: improve V4L2_CID_MIN_BUFFERS_FOR_*, doc
media: vicodec: add V4L2_CID_MIN_BUFFERS_FOR_* controls
media: atomisp: Add check for rgby_data memory allocation failure
media: atomisp: remove redundant re-checking of err
media: atomisp: Fix spelling errors reported by codespell
media: atomisp: Remove License information boilerplate
media: atomisp: Fix typos in comment
media: atomisp: hmm_bo: Fix spelling errors in hmm_bo.h
...
With the introduction of the new object and its infrastructure, update the
doc and the vIOMMU graph to reflect that.
Link: https://patch.msgid.link/r/e1ff278b7163909b2641ae04ff364bb41d2a2a2e.1730836308.git.nicolinc@nvidia.com
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
With the introduction of the new object and its infrastructure, update the
doc to reflect that and add a new graph.
Link: https://patch.msgid.link/r/7e4302064e0d02137c1b1e139342affc0485ed3f.1730836219.git.nicolinc@nvidia.com
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Merge tag 'v6.12-rc7' into __tmp-hansg-linux-tags_media_atomisp_6_13_1
Linux 6.12-rc7
* tag 'v6.12-rc7': (1909 commits)
Linux 6.12-rc7
filemap: Fix bounds checking in filemap_read()
i2c: designware: do not hold SCL low when I2C_DYNAMIC_TAR_UPDATE is not set
mailmap: add entry for Thorsten Blum
ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove()
signal: restore the override_rlimit logic
fs/proc: fix compile warning about variable 'vmcore_mmap_ops'
ucounts: fix counter leak in inc_rlimit_get_ucounts()
selftests: hugetlb_dio: check for initial conditions to skip in the start
mm: fix docs for the kernel parameter ``thp_anon=``
mm/damon/core: avoid overflow in damon_feed_loop_next_input()
mm/damon/core: handle zero schemes apply interval
mm/damon/core: handle zero {aggregation,ops_update} intervals
mm/mlock: set the correct prev on failure
objpool: fix to make percpu slot allocation more robust
mm/page_alloc: keep track of free highatomic
bcachefs: Fix UAF in __promote_alloc() error path
bcachefs: Change OPT_STR max to be 1 less than the size of choices array
bcachefs: btree_cache.freeable list fixes
bcachefs: check the invalid parameter for perf test
...
Clearly state that the V4L2_CID_MIN_BUFFERS_FOR_OUTPUT and
V4L2_CID_MIN_BUFFERS_FOR_CAPTURE controls are required for
stateful codecs.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Add two media bus formats that identify 30-bit RGB pixels transmitted
by a LVDS link with five differential data pairs, serialized into 7
time slots, using standard SPWG/VESA or JEIDA data mapping.
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241104032806.611890-5-victor.liu@nxp.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Pedro Falcato's optimization [1] for checking sealed VMAs, which replaces
the can_modify_mm() function with an in-loop check, necessitates an update
to the mseal.rst documentation to reflect this change.
Furthermore, the document has received offline comments regarding the code
sample and suggestions for sentence clarification to enhance reader
comprehension.
[1] https://lore.kernel.org/linux-mm/20240817-mseal-depessimize-v3-0-d8d2e037df30@gmail.com/
Update doc after in-loop change: mprotect/madvise can have
partially updated and munmap is atomic.
Fix indentation and clarify some sections to improve readability.
Link: https://lkml.kernel.org/r/20241008040942.1478931-2-jeffxu@chromium.org
Fixes: df2a7df9a9 ("mm/munmap: replace can_modify_mm with can_modify_vma")
Fixes: 4a2dd02b09 ("mm/mprotect: replace can_modify_mm with can_modify_vma")
Fixes: 38075679b5 ("mm/mremap: replace can_modify_mm with can_modify_vma")
Fixes: 23c57d1fa2 ("mseal: replace can_modify_mm_madv with a vma variant")
Signed-off-by: Jeff Xu <jeffxu@chromium.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Elliott Hughes <enh@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Jann Horn <jannh@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jorge Lucangeli Obes <jorgelo@chromium.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Pedro Falcato <pedro.falcato@gmail.com>
Cc: Stephen Röttger <sroettger@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: "Theo de Raadt" <deraadt@openbsd.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Improve user space and kernel documentation.
Signed-off-by: Daniel Burgener <dburgener@linux.microsoft.com>
Link: https://lore.kernel.org/r/20241015172647.2007644-1-dburgener@linux.microsoft.com
[mic: Extend commit message, reword ptrace restriction as discussed in
the thread]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Deprecation period of reiserfs ends with the end of this year so it is
time to remove it from the kernel.
Acked-by: Darrick J. Wong <djwong@kernel.org>
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Add two meta formats for PiSP FE: V4L2_META_FMT_RPI_FE_CFG and
V4L2_META_FMT_RPI_FE_STATS. The former is used to provide configuration
for the FE and the latter is used to read the statistics from the FE.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Improve consistency of previous limitations' subsection titles, and
expand a bit the IOCTL section.
This changes some HTML anchors and may break some external links though.
Cc: Konstantin Meskhidze <konstantin.meskhidze@huawei.com>
Cc: Tahera Fahimi <fahimitahera@gmail.com>
Reviewed-by: Günther Noack <gnoack3000@gmail.com>
Link: https://lore.kernel.org/r/20241004153122.501775-1-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
When the index is ORed with V4L2_FMTDESC_FLAG_ENUM_ALL the
driver clears the flag and enumerate all the possible formats,
ignoring any limitations from the current configuration.
Drivers which do not support this flag yet always return an EINVAL.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil: improved doc when the new flag is not supported by the driver]
The formats added by this patch are:
V4L2_PIX_FMT_Y16I
Interlaced lumina format primary use in RealSense Depth cameras with
stereo stream for left and right image sensors.
Signed-off-by: Dmitry Perchanov <dmitry.perchanov@intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/568efbd75290e286b8ad9e7347b5f43745121020.camel@intel.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Corrected a minor misspelling on line 30. This patch changes
'cicle' to 'cycle'.
Signed-off-by: Kendra Moore <kendra.j.moore3443@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
The previous IOMMUFD_OBJ_HW_PAGETABLE has been reworked to two separated
objects: IOMMUFD_OBJ_HWPT_PAGING and IOMMUFD_OBJ_HWPT_NESTED in order to
support a nested translation context.
Corresponding to the latest iommufd APIs and uAPIs, update the doc so as
to reflect the new design.
Link: https://patch.msgid.link/r/20240913052519.2153-1-nicolinc@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Merge tag 'landlock-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull landlock updates from Mickaël Salaün:
"We can now scope a Landlock domain thanks to a new "scoped" field that
can deny interactions with resources outside of this domain.
The LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET flag denies connections to an
abstract UNIX socket created outside of the current scoped domain, and
the LANDLOCK_SCOPE_SIGNAL flag denies sending a signal to processes
outside of the current scoped domain.
These restrictions also apply to nested domains according to their
scope. The related changes will also be useful to support other kind
of IPC isolations"
* tag 'landlock-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
landlock: Document LANDLOCK_SCOPE_SIGNAL
samples/landlock: Add support for signal scoping
selftests/landlock: Test signal created by out-of-bound message
selftests/landlock: Test signal scoping for threads
selftests/landlock: Test signal scoping
landlock: Add signal scoping
landlock: Document LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET
samples/landlock: Add support for abstract UNIX socket scoping
selftests/landlock: Test inherited restriction of abstract UNIX socket
selftests/landlock: Test connected and unconnected datagram UNIX socket
selftests/landlock: Test UNIX sockets with any address formats
selftests/landlock: Test abstract UNIX socket scoping
selftests/landlock: Test handling of unknown scope
landlock: Add abstract UNIX socket scoping
Introduce LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET as an IPC scoping
mechanism available since Landlock ABI version 6. Update ruleset_attr,
Landlock ABI version, and access rights code blocks based on that.
Signed-off-by: Tahera Fahimi <fahimitahera@gmail.com>
Link: https://lore.kernel.org/r/ac75151861724c19ed62b500cfe497612d9a6607.1725494372.git.fahimitahera@gmail.com
[mic: Improve commit message and documentation, add a missing
fallthrough, reformat to 80 columns, improve some wording]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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Merge tag 'v6.11-rc6' into docs-mw
This is done primarily to get a docs build fix merged via another tree so
that "make htmldocs" stops failing.
- v4l2_av1_segmentation table formatting
- incorrect member name uv_sec_strength
- incorrect struct name v4l2_av1_global_motion
- incorrect link label for v4l2_av1_loop_filter
- add max_frame_height_minus_1
- struct ordering
Signed-off-by: Fritz Koenig <frkoenig@chromium.org>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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Merge tag 'next-media-rkisp1-20240814' of git://git.kernel.org/pub/scm/linux/kernel/git/pinchartl/linux.git
Extensible parameters support for the rkisp1 driver.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Document V4L2_PIX_FMT_MT2110T and V4L2_PIX_FMT_MT2110R. These two
formats are nearly identical, reusing MM21 format and expending it
by inserting chunk of 16 bytes of lower 2 bit pixel data after each
chunk of 64 bytes higher 8 bit of data.
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This diagram details the partitioning done in each tiles.
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This is a 15 bits per pixel (or packed 10 bit format), so move it
into the relevant section.
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
The diagram have been pushed back at the end of a list of unrelated
pixels formats. Move it back next its related pixel format.
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
The rkisp1 driver stores ISP configuration parameters in the fixed
rkisp1_params_cfg structure. As the members of the structure are part of
the userspace API, the structure layout is immutable and cannot be
extended further. Introducing new parameters or modifying the existing
ones would change the buffer layout and cause breakages in existing
applications.
The allow for future extensions to the ISP parameters, introduce a new
extensible parameters format, with a new format 4CC. Document usage of
the new format in the rkisp1 admin guide.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Commit d7894721f7 ("media: docs: Fix newline typo") aimed to fix the
newline typos in capture.c, but some of the typos were not fixed. Fix
the remaining newline typos.
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
The documentation of the Memory Consistency Flags was part of the struct
v4l2_buffer documentation, but that struct doesn't use those flags. Instead
it is used by VIDIOC_CREATE_BUFS and VIDIOC_REQBUFS. Move the documentation
from buffer.rst to vidioc-reqbufs.rst which is where it belongs.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
The documentation for V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS and
V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS was missing. Add this.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
"Blanking" should be spelled as such, not "balanking". Fix it.
Reported-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
If this flag is set, then the reply is expected to consist of
the CEC_MSG_VENDOR_COMMAND_WITH_ID opcode followed by the Vendor ID (as
used in bytes 1-4 of the message), followed by the struct cec_msg reply
field.
Note that this assumes that the byte after the Vendor ID is a
vendor-specific opcode.
This flag makes it easier to wait for replies to vendor commands,
using the same CEC framework support for waiting for regular replies.
Support for this flag is indicated by setting the new
CEC_CAP_REPLY_VENDOR_ID capability.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The original patch added two columns in the flat-table of Luma-Only
Image Formats, without updating hints to latex: above it. This results
in wrong column count in the output of Sphinx's latex builder.
Fix it.
Reported-by: Akira Yokosawa <akiyks@gmail.com>
Closes: https://lore.kernel.org/linux-media/bdbc27ba-5098-49fb-aabf-753c81361cc7@gmail.com/
Fixes: adb1d4655e ("media: v4l: Add V4L2-PIX-FMT-Y14P format")
Cc: stable@vger.kernel.org # for v6.10
Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@yoseli.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Here is the "big" set of char/misc and other driver subsystem changes
for 6.11-rc1. Nothing major in here, just loads of new drivers and
updates. Included in here are:
- IIO api updates and new drivers added
- wait_interruptable_timeout() api cleanups for some drivers
- MODULE_DESCRIPTION() additions for loads of drivers
- parport out-of-bounds fix
- interconnect driver updates and additions
- mhi driver updates and additions
- w1 driver fixes
- binder speedups and fixes
- eeprom driver updates
- coresight driver updates
- counter driver update
- new misc driver additions
- other minor api updates
All of these, EXCEPT for the final Kconfig build fix for 32bit systems,
have been in linux-next for a while with no reported issues. The
Kconfig fixup went in 29 hours ago, so might have missed the latest
linux-next, but was acked by everyone involved.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc and other driver updates from Greg KH:
"Here is the "big" set of char/misc and other driver subsystem changes
for 6.11-rc1. Nothing major in here, just loads of new drivers and
updates. Included in here are:
- IIO api updates and new drivers added
- wait_interruptable_timeout() api cleanups for some drivers
- MODULE_DESCRIPTION() additions for loads of drivers
- parport out-of-bounds fix
- interconnect driver updates and additions
- mhi driver updates and additions
- w1 driver fixes
- binder speedups and fixes
- eeprom driver updates
- coresight driver updates
- counter driver update
- new misc driver additions
- other minor api updates
All of these, EXCEPT for the final Kconfig build fix for 32bit
systems, have been in linux-next for a while with no reported issues.
The Kconfig fixup went in 29 hours ago, so might have missed the
latest linux-next, but was acked by everyone involved"
* tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits)
misc: Kconfig: exclude mrvl-cn10k-dpi compilation for 32-bit systems
misc: delete Makefile.rej
binder: fix hang of unregistered readers
misc: Kconfig: add a new dependency for MARVELL_CN10K_DPI
virtio: add missing MODULE_DESCRIPTION() macro
agp: uninorth: add missing MODULE_DESCRIPTION() macro
spmi: add missing MODULE_DESCRIPTION() macros
dev/parport: fix the array out-of-bounds risk
samples: configfs: add missing MODULE_DESCRIPTION() macro
misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver
misc: keba: Fix missing AUXILIARY_BUS dependency
slimbus: Fix struct and documentation alignment in stream.c
MAINTAINERS: CC dri-devel list on Qualcomm FastRPC patches
misc: fastrpc: use coherent pool for untranslated Compute Banks
misc: fastrpc: support complete DMA pool access to the DSP
misc: fastrpc: add missing MODULE_DESCRIPTION() macro
misc: fastrpc: Add missing dev_err newlines
misc: fastrpc: Use memdup_user()
nvmem: core: Implement force_ro sysfs attribute
nvmem: Use sysfs_emit() for type attribute
...
- Core:
* Support for the "ats-supported" device-tree property.
* Removal of the 'ops' field from 'struct iommu_fwspec'.
* Introduction of iommu_paging_domain_alloc() and partial conversion
of existing users.
* Introduce 'struct iommu_attach_handle' and provide corresponding
IOMMU interfaces which will be used by the IOMMUFD subsystem.
* Remove stale documentation.
* Add missing MODULE_DESCRIPTION() macro.
* Misc cleanups.
- Allwinner Sun50i:
* Ensure bypass mode is disabled on H616 SoCs.
* Ensure page-tables are allocated below 4GiB for the 32-bit
page-table walker.
* Add new device-tree compatible strings.
- AMD Vi:
* Use try_cmpxchg64() instead of cmpxchg64() when updating pte.
- Arm SMMUv2:
* Print much more useful information on context faults.
* Fix Qualcomm TBU probing when CONFIG_ARM_SMMU_QCOM_DEBUG=n.
* Add new Qualcomm device-tree bindings.
- Arm SMMUv3:
* Support for hardware update of access/dirty bits and reporting via
IOMMUFD.
* More driver rework from Jason, this time updating the PASID/SVA support
to prepare for full IOMMUFD support.
* Add missing MODULE_DESCRIPTION() macro.
* Minor fixes and cleanups.
- NVIDIA Tegra:
* Fix for benign fwspec initialisation issue exposed by rework on the
core branch.
- Intel VT-d:
* Use try_cmpxchg64() instead of cmpxchg64() when updating pte.
* Use READ_ONCE() to read volatile descriptor status.
* Remove support for handling Execute-Requested requests.
* Avoid calling iommu_domain_alloc().
* Minor fixes and refactoring.
- Qualcomm MSM:
* Updates to the device-tree bindings.
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Merge tag 'iommu-updates-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu updates from Will Deacon:
"Core:
- Support for the "ats-supported" device-tree property
- Removal of the 'ops' field from 'struct iommu_fwspec'
- Introduction of iommu_paging_domain_alloc() and partial conversion
of existing users
- Introduce 'struct iommu_attach_handle' and provide corresponding
IOMMU interfaces which will be used by the IOMMUFD subsystem
- Remove stale documentation
- Add missing MODULE_DESCRIPTION() macro
- Misc cleanups
Allwinner Sun50i:
- Ensure bypass mode is disabled on H616 SoCs
- Ensure page-tables are allocated below 4GiB for the 32-bit
page-table walker
- Add new device-tree compatible strings
AMD Vi:
- Use try_cmpxchg64() instead of cmpxchg64() when updating pte
Arm SMMUv2:
- Print much more useful information on context faults
- Fix Qualcomm TBU probing when CONFIG_ARM_SMMU_QCOM_DEBUG=n
- Add new Qualcomm device-tree bindings
Arm SMMUv3:
- Support for hardware update of access/dirty bits and reporting via
IOMMUFD
- More driver rework from Jason, this time updating the PASID/SVA
support to prepare for full IOMMUFD support
- Add missing MODULE_DESCRIPTION() macro
- Minor fixes and cleanups
NVIDIA Tegra:
- Fix for benign fwspec initialisation issue exposed by rework on the
core branch
Intel VT-d:
- Use try_cmpxchg64() instead of cmpxchg64() when updating pte
- Use READ_ONCE() to read volatile descriptor status
- Remove support for handling Execute-Requested requests
- Avoid calling iommu_domain_alloc()
- Minor fixes and refactoring
Qualcomm MSM:
- Updates to the device-tree bindings"
* tag 'iommu-updates-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (72 commits)
iommu/tegra-smmu: Pass correct fwnode to iommu_fwspec_init()
iommu/vt-d: Fix identity map bounds in si_domain_init()
iommu: Move IOMMU_DIRTY_NO_CLEAR define
dt-bindings: iommu: Convert msm,iommu-v0 to yaml
iommu/vt-d: Fix aligned pages in calculate_psi_aligned_address()
iommu/vt-d: Limit max address mask to MAX_AGAW_PFN_WIDTH
docs: iommu: Remove outdated Documentation/userspace-api/iommu.rst
arm64: dts: fvp: Enable PCIe ATS for Base RevC FVP
iommu/of: Support ats-supported device-tree property
dt-bindings: PCI: generic: Add ats-supported property
iommu: Remove iommu_fwspec ops
OF: Simplify of_iommu_configure()
ACPI: Retire acpi_iommu_fwspec_ops()
iommu: Resolve fwspec ops automatically
iommu/mediatek-v1: Clean up redundant fwspec checks
RDMA/usnic: Use iommu_paging_domain_alloc()
wifi: ath11k: Use iommu_paging_domain_alloc()
wifi: ath10k: Use iommu_paging_domain_alloc()
drm/msm: Use iommu_paging_domain_alloc()
vhost-vdpa: Use iommu_paging_domain_alloc()
...
around, mostly more of the usual:
- More Spanish, Italian, and Chinese translations
- A new script, scripts/checktransupdate.py, can be used to see which
commits have touched an (English) document since a given translation was
last updated.
- A couple of "best practices" suggestions (on Link: tags and off-list
discussions) that were not entirely at consensus level, but I concluded
they were close enough to accept.
- Some nice cleanups removing documentation for kernel parameters that have
not been recognized for ... a long time.
...along with the usual updates, typo fixes, and such.
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Merge tag 'docs-6.11' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"Nothing hugely exciting happening in the documentation tree this time
around, mostly more of the usual:
- More Spanish, Italian, and Chinese translations
- A new script, scripts/checktransupdate.py, can be used to see which
commits have touched an (English) document since a given
translation was last updated.
- A couple of "best practices" suggestions (on Link: tags and
off-list discussions) that were not entirely at consensus level,
but I concluded they were close enough to accept.
- Some nice cleanups removing documentation for kernel parameters
that have not been recognized for ... a long time.
...along with the usual updates, typo fixes, and such"
* tag 'docs-6.11' of git://git.lwn.net/linux: (57 commits)
Documentation: Document user_events ioctl code
docs/pinctrl: fix typo in mapping example
docs: maintainer: discourage taking conversations off-list
docs: driver-model: platform: update the definition of platform_driver
docs/sp_SP: Add translation for scheduler/sched-design-CFS.rst
writing_musb_glue_layer.rst: Fix broken URL
zh_CN/admin-guide: one typo fix
docs/zh_CN/virt: Update the translation of guest-halt-polling.rst
Documentation: add reference from dynamic debug to loglevel kernel params
Documentation: best practices for using Link trailers
Documentation: fix links to mailing list services
Documentation: exception-tables.rst: Fix the wrong steps referenced
docs/zh_CN: add process/researcher-guidelines Chinese translation
Documentation/tools/rv: fix document header
docs/sp_SP: Add translation of process/maintainer-kvm-x86.rst
docs/admin-guide/mm: correct typo 'quired' to 'queried'
Add libps2 to the input section of driver-api
Docs/mm/index: move allocation profiling document to unsorted documents chapter
Docs/mm/index: rename 'Legacy Documentation' to 'Unsorted Documentation'
Docs/mm/index: Remove 'Memory Management Guide' chapter marker
...
* Fix some typos, incomplete or confusing phrases.
* Split paragraphs where appropriate.
* List the same error code multiple times,
if it has multiple possible causes.
* Bring wording closer to the man page wording,
which has undergone more thorough review
(esp. for LANDLOCK_ACCESS_FS_WRITE_FILE).
* Small semantic clarifications
* Call the ephemeral port range "ephemeral"
* Clarify reasons for EFAULT in landlock_add_rule()
* Clarify @rule_type doc for landlock_add_rule()
This is a collection of small fixes which I collected when preparing the
corresponding man pages [1].
Cc: Alejandro Colomar <alx@kernel.org>
Cc: Konstantin Meskhidze <konstantin.meskhidze@huawei.com>
Link: https://lore.kernel.org/r/20240715155554.2791018-1-gnoack@google.com [1]
Signed-off-by: Günther Noack <gnoack@google.com>
Link: https://lore.kernel.org/r/20240715160328.2792835-2-gnoack@google.com
[mic: Add label to link, fix formatting spotted by make htmldocs,
synchronize userspace-api documentation's date]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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Merge tag 'media/v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- New sensor drivers: gc05a2, gc08a3 and imx283
- New serializer/deserializer drivers: max96714 and max96717
- New JPEG encoder driver: e5010
- Support for Raspberry Pi PiSP Backend (BE) ISP driver
- Old documentation for av7110 driver removed, as a new version was
added as Documentation/userspace-api/media/dvb/legacy*.rst
- atompisp: Linux firmwares are now available, so drop firmware-related
task from TODO and update firmware logic
- The imx258 driver has gained several improvements
- wave5 driver has gained support for HEVC decoding
- em28xx gained support for MyGica UTV3
- av7110 budget-patch driver removed
- Lots of other cleanups, improvements and fixes
* tag 'media/v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (301 commits)
media: raspberrypi: Switch to remove_new
media: uapi: pisp_be_config: Add extra config fields
media: uapi: pisp_be_config: Re-sort pisp_be_tiles_config
media: uapi: pisp_common: Capitalize all macros
media: uapi: pisp_common: Add 32 bpp format test
media: uapi: pisp_be_config: Drop BIT() from uAPI
media: stm32: dcmipp: correct error handling in dcmipp_create_subdevs
media: atomisp: Fix spelling mistakes in sh_css_sp.c
media: atomisp: Fix spelling mistake in ia_css_debug.c
media: atomisp: Fix spelling mistake in hmm_bo.c
media: atomisp: Fix spelling mistake in ia_css_eed1_8.host.c
media: atomisp: Fix spelling mistake in sh_css_internal.h
media: atomisp: Fix spelling mistake "pipline" -> "pipeline"
media: atomisp: Remove unused GPIO related defines and APIs
media: atomisp: Replace COMPILATION_ERROR_IF() by static_assert()
media: atomisp: Clean up unused macros from math_support.h
media: atomisp: csi2-bridge: Add DMI quirk for OV5693 on Xiaomi Mipad2
media: atomisp: Update TODO
media: atomisp: Prefix firmware paths with "intel/ipu/"
media: atomisp: Remove firmware_name module parameter
...
The user events trace subsystem uses the 0x2A/'*' code for ioctls. These
are published via the uapi/linux/user_events.h header file.
Add a line indicating user events as the owner of the 0x2A/'*' code and
reserve the first 32 sequence numbers.
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240715181413.1157-1-beaub@linux.microsoft.com
GPIOLIB core:
- rework kfifo handling rework in the character device code
- improve the labeling of GPIOs requested as interrupts and show more info
on interrupt-only GPIOs in debugfs
- remove unused APIs
- unexport interfaces that are only used from the core GPIO code
- drop the return value from gpiochip_set_desc_names() as it cannot fail
- move a string array definition out of a header and into a specific
compilation unit
- convert the last user of gpiochip_get_desc() other than GPIO core to using
a safer alternative
- use array_index_nospec() where applicable
New drivers:
- add a "virtual GPIO consumer" module that allows requesting GPIOs from actual
hardware and driving tests of the in-kernel GPIO API from user-space over
debugfs
- add a GPIO-based "sloppy" logic analyzer module useful for "first glance"
debugging on remote boards
Driver improvements:
- add support for a new model to gpio-pca953x
- lock GPIOs as interrupts in gpio-sim when the lines are requested as irqs
via the simulator domain + some other minor improvements
- improve error reporting in gpio-syscon
- convert gpio-ath79 to using dynamic GPIO base and range
- use pcibios_err_to_errno() for converting PCIBIOS error codes to errno
vaues in gpio-amd8111 and gpio-rdc321x
- allow building gpio-brcmstb for the BCM2835 architecture
DT bindings:
- convert DT bindings for lsi,zevio, mpc8xxx, and atmel to DT schema
- document new properties for aspeed,gpio, fsl,qoriq-gpio and gpio-vf610
- document new compatibles for pca953x and fsl,qoriq-gpio
Documentation:
- document stricter behavior of the GPIO character device uAPI with regards to
reconfiguring requested line without direction set
- clarify the effect of the active-low flag on line values and edges
- remove documentation for the legacy GPIO API in order to stop tempting
people to use it
- document the preference for using pread() for reading edge events in the
sysfs API
Other:
- add an extended initializer to the interrupt simulator allowing to specify
a number of callbacks callers can use to be notified about irqs being
requested and released
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Merge tag 'gpio-updates-for-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"The majority of added lines are two new modules: the GPIO virtual
consumer module that improves our ability to add automated tests for
the kernel API and the "sloppy" logic analyzer module that uses the
GPIO API to implement a coarse-grained debugging tool for useful for
remote development.
Other than that we have the usual assortment of various driver
extensions, improvements to the core GPIO code, DT-bindings and other
documentation updates as well as an extension to the interrupt
simulator:
GPIOLIB core:
- rework kfifo handling rework in the character device code
- improve the labeling of GPIOs requested as interrupts and show more
info on interrupt-only GPIOs in debugfs
- remove unused APIs
- unexport interfaces that are only used from the core GPIO code
- drop the return value from gpiochip_set_desc_names() as it cannot
fail
- move a string array definition out of a header and into a specific
compilation unit
- convert the last user of gpiochip_get_desc() other than GPIO core
to using a safer alternative
- use array_index_nospec() where applicable
New drivers:
- add a "virtual GPIO consumer" module that allows requesting GPIOs
from actual hardware and driving tests of the in-kernel GPIO API
from user-space over debugfs
- add a GPIO-based "sloppy" logic analyzer module useful for "first
glance" debugging on remote boards
Driver improvements:
- add support for a new model to gpio-pca953x
- lock GPIOs as interrupts in gpio-sim when the lines are requested
as irqs via the simulator domain + some other minor improvements
- improve error reporting in gpio-syscon
- convert gpio-ath79 to using dynamic GPIO base and range
- use pcibios_err_to_errno() for converting PCIBIOS error codes to
errno vaues in gpio-amd8111 and gpio-rdc321x
- allow building gpio-brcmstb for the BCM2835 architecture
DT bindings:
- convert DT bindings for lsi,zevio, mpc8xxx, and atmel to DT schema
- document new properties for aspeed,gpio, fsl,qoriq-gpio and
gpio-vf610
- document new compatibles for pca953x and fsl,qoriq-gpio
Documentation:
- document stricter behavior of the GPIO character device uAPI with
regards to reconfiguring requested line without direction set
- clarify the effect of the active-low flag on line values and edges
- remove documentation for the legacy GPIO API in order to stop
tempting people to use it
- document the preference for using pread() for reading edge events
in the sysfs API
Other:
- add an extended initializer to the interrupt simulator allowing to
specify a number of callbacks callers can use to be notified about
irqs being requested and released"
* tag 'gpio-updates-for-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (41 commits)
gpio: mc33880: Convert comma to semicolon
gpio: virtuser: actually use the "trimmed" local variable
dt-bindings: gpio: convert Atmel GPIO to json-schema
gpio: virtuser: new virtual testing driver for the GPIO API
dt-bindings: gpio: vf610: Allow gpio-line-names to be set
gpio: sim: lock GPIOs as interrupts when they are requested
genirq/irq_sim: add an extended irq_sim initializer
dt-bindings: gpio: fsl,qoriq-gpio: Add compatible string fsl,ls1046a-gpio
gpiolib: unexport gpiochip_get_desc()
gpio: add sloppy logic analyzer using polling
Documentation: gpio: Reconfiguration with unset direction (uAPI v2)
Documentation: gpio: Reconfiguration with unset direction (uAPI v1)
dt-bindings: gpio: fsl,qoriq-gpio: add common property gpio-line-names
gpio: ath79: convert to dynamic GPIO base allocation
pinctrl: da9062: replace gpiochip_get_desc() with gpio_device_get_desc()
gpiolib: put gpio_suffixes in a single compilation unit
Documentation: gpio: Clarify effect of active low flag on line edges
Documentation: gpio: Clarify effect of active low flag on line values
gpiolib: Remove data-less gpiochip_add() function
gpio: sim: use devm_mutex_init()
...
Adds a misc driver for Marvell CN10K DPI(DMA Engine) device's physical
function which initializes DPI DMA hardware's global configuration and
enables hardware mailbox channels between physical function (PF) and
it's virtual functions (VF). VF device drivers (User space drivers) use
this hw mailbox to communicate any required device configuration on it's
respective VF device. Accordingly, this DPI PF driver provisions the
VF device resources.
At the hardware level, the DPI physical function (PF) acts as a management
interface to setup the VF device resources, VF devices are only provisioned
to handle or control the actual DMA Engine's data transfer capabilities.
Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com>
Reviewed-by: Srujana Challa <schalla@marvell.com>
Link: https://lore.kernel.org/r/20240706153009.3775333-1-vattunuru@marvell.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Documentation/userspace-api/iommu.rst file has become outdated due
to the removal of associated structures and APIs.
Specifically, struct such as iommu_cache_invalidate_info and guest
pasid related uapi were removed in commit 0c9f178778 ("iommu:
Remove guest pasid related interfaces and definitions").
And the corresponding uapi/linux/iommu.h file was removed in
commit 00a9bc6070 ("iommu: Move iommu fault data to
linux/iommu.h").
Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20240702120617.26882-1-mark-pk.tsai@mediatek.com
[will: Remove stale reference to 'iommu' from index.rst]
Signed-off-by: Will Deacon <will@kernel.org>
Update description of reconfiguration rules, adding requirement that a
direction flag be set to enable changing configuration for a line.
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Link: https://lore.kernel.org/r/20240626052925.174272-5-warthog618@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Update description of reconfiguration rules, adding requirement that a
direction flag be set or the configuration is considered invalid.
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Link: https://lore.kernel.org/r/20240626052925.174272-4-warthog618@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Add Raspberry Pi compressed RAW Bayer formats.
The compression algorithm description is provided by Nick Hollinghurst
<nick.hollinghurst@raspberrypi.com> from Raspberry Pi.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Add format description for the PiSP Back End configuration parameter
buffer.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
The Y10P, Y12P and Y14P format variants are packed according to
the RAW10, RAW12 and RAW14 formats as defined by the MIPI CSI-2
specification. Document it.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
When MFD_NOEXEC_SEAL was introduced, there was one big mistake: it didn't
have proper documentation. This led to a lot of confusion, especially
about whether or not memfd created with the MFD_NOEXEC_SEAL flag is
sealable. Before MFD_NOEXEC_SEAL, memfd had to explicitly set
MFD_ALLOW_SEALING to be sealable, so it's a fair question.
As one might have noticed, unlike other flags in memfd_create,
MFD_NOEXEC_SEAL is actually a combination of multiple flags. The idea is
to make it easier to use memfd in the most common way, which is NOEXEC +
F_SEAL_EXEC + MFD_ALLOW_SEALING. This works with sysctl vm.noexec to help
existing applications move to a more secure way of using memfd.
Proposals have been made to put MFD_NOEXEC_SEAL non-sealable, unless
MFD_ALLOW_SEALING is set, to be consistent with other flags [1], Those
are based on the viewpoint that each flag is an atomic unit, which is a
reasonable assumption. However, MFD_NOEXEC_SEAL was designed with the
intent of promoting the most secure method of using memfd, therefore a
combination of multiple functionalities into one bit.
Furthermore, the MFD_NOEXEC_SEAL has been added for more than one year,
and multiple applications and distributions have backported and utilized
it. Altering ABI now presents a degree of risk and may lead to
disruption.
MFD_NOEXEC_SEAL is a new flag, and applications must change their code to
use it. There is no backward compatibility problem.
When sysctl vm.noexec == 1 or 2, applications that don't set
MFD_NOEXEC_SEAL or MFD_EXEC will get MFD_NOEXEC_SEAL memfd. And
old-application might break, that is by-design, in such a system vm.noexec
= 0 shall be used. Also no backward compatibility problem.
I propose to include this documentation patch to assist in clarifying the
semantics of MFD_NOEXEC_SEAL, thereby preventing any potential future
confusion.
Finally, I would like to express my gratitude to David Rheinsberg and
Barnabás Pőcze for initiating the discussion on the topic of sealability.
[1]
https://lore.kernel.org/lkml/20230714114753.170814-1-david@readahead.eu/
[jeffxu@chromium.org: updates per Randy]
Link: https://lkml.kernel.org/r/20240611034903.3456796-2-jeffxu@chromium.org
[jeffxu@chromium.org: v3]
Link: https://lkml.kernel.org/r/20240611231409.3899809-2-jeffxu@chromium.org
Link: https://lkml.kernel.org/r/20240607203543.2151433-2-jeffxu@google.com
Signed-off-by: Jeff Xu <jeffxu@chromium.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: Barnabás Pőcze <pobrn@protonmail.com>
Cc: Daniel Verkamp <dverkamp@chromium.org>
Cc: David Rheinsberg <david@readahead.eu>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jorge Lucangeli Obes <jorgelo@chromium.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
