API:
- Add af_alg_restrict sysctl and white list.
- Fix potential suspend/resume races in hwrng.
Algorithms:
- Optimize vli additive operations using compiler builtins in ecc.
Drivers:
- Remove unsafe/deprecated algorithms from qce.
- Mark qce as BROKEN.
- Add runtime PM and interconnect bandwidth scaling support to qce.
- Remove crypto_rng from qcom, sun8i and caam.
- Fix SG list issues in iaa.
- Fix SEV init path bugs in ccp.
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Merge tag 'v7.3-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu:
"API:
- Add af_alg_restrict sysctl and white list
- Fix potential suspend/resume races in hwrng
Algorithms:
- Optimize vli additive operations using compiler builtins in ecc
Drivers:
- Remove unsafe/deprecated algorithms from qce
- Mark qce as BROKEN
- Add runtime PM and interconnect bandwidth scaling support to qce
- Remove crypto_rng from qcom, sun8i and caam
- Fix SG list issues in iaa
- Fix SEV init path bugs in ccp"
* tag 'v7.3-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (122 commits)
crypto: lskcipher - propagate errors from unaligned crypt
crypto: keembay - use crypto_memneq() to compare CCM AEAD tags
crypto: keembay - use crypto_memneq() to compare GCM AEAD tags
crypto: sa2ul - use crypto_memneq() to compare AEAD tag
hwrng: drivers - use named initializers for acpi_device_id
crypto: qce - fix CCM AAD buffer underallocation
crypto: iaa - unmap dst before software fallback on decompress
crypto: iaa - use bounce buffer for multi-sg decompress input
crypto: iaa - avoid counting fallback decompression bytes
crypto: iaa - fall back to software for multi-entry scatterlists
hwrng: core - Stop/start hwrng_fillfn() kthread before/after suspend-resume
crypto: hisilicon/sec2 - fix CCM algorithm long packet failure
crypto: eip93 - use struct_size() and flexible array for ring allocation
crypto: krb5 - use kfree_sensitive() for derived key buffers
crypto: af_alg - Stop after finding name in allowlist
crypto: af_alg - Replace 'bool privileged' with flags
crypto: af_alg - Make cbc(paes) privileged-only
hwrng: imx-rngc - Disable clock on registration failure
crypto: qat - remove dead ADF_HEX code
crypto: qce - simplify qce_handle_request
...
- container_of:
- Apply typeof_member(), remove the local __mptr variable to eliminate
variable shadowing warnings on nested container_of() calls, and remove
unnecessary parentheses.
- core:
- Add driver name to probe debug print for initcall_debug.
- Avoid repeatedly printing the same 'Fixed dependency cycle' log.
- Unwind device_add() on attribute creation failure in
attribute_container_add_class_device().
- Remove statistics group if encryption group creation fails in
transport_add_class_device().
- debugfs:
- Fix lockdown check for mmap_prepare().
- Warn if file creation failed due to uninitialized debugfs.
- device property:
- Implement fw_devlink support for software nodes by adding
software_node_add_links(), which creates fwnode links from DEV_PROP_REF
properties to enable automatic probe ordering. Add kunit-managed fwnode
helpers and test coverage.
- Fix infinite loop in fwnode_for_each_child_node() when the secondary fwnode
has more than one child. Add test cases.
- Fix out-of-bounds access in software_node_get_reference_args() when called
with index -1 (UINT_MAX).
- Refactor to use RAII approach with __free().
- Add Bartosz Golaszewski as software node reviewer.
- firmware loader:
- Fix race where a sysfs fallback request can complete before being queued as
pending, leading to a use-after-free on the next fallback request.
- Reject 0-size built-in firmware and fail the build on empty firmware files
in CONFIG_EXTRA_FIRMWARE.
- kobject:
- Provide __KOBJ_ATTR() and __KOBJ_ATTR_RO/WO() initialization macros and
allow the constification of kobject attributes, enabling them to reside in
read-only memory.
- platform:
- Provide platform_device_set_of_node(), platform_device_set_fwnode(), and
platform_device_set_of_node_from_dev() helpers that encapsulate firmware
node reference counting for dynamically allocated platform devices. Convert
all in-tree users that manually assigned dev.of_node or dev.fwnode, fixing a
pre-existing refcount bug in powermac. Switch to counting references of all
firmware node types, not only OF nodes.
- Unify the release path for dynamically allocated platform devices by
removing platform_device_release_full(). Amend the fwnode setter API
contract to warn if a primary software node is overwritten. Add KUnit tests
for correct software node removal on device unregistration.
- Rust:
- Auxiliary:
- Add registration_data_with() closure-based API for invariant ForLt types.
- Debugfs:
- Migrate BinaryWriter and BinaryReaderMut trait requirements from
kernel::transmute traits to zerocopy traits.
- Device:
- Add BoundInternal device context and InternalBoundContext trait for bus
abstractions that need internal access to a bound device.
- Make the lifetime on Core and CoreInternal invariant to prevent coercion
to shorter lifetimes.
- Devres:
- Fix race between concurrent revokers where the losing revoker could return
before the winning revoker finished dropping the inner data, causing
use-after-free.
- Ensure revocation is complete before the device finishes unbinding by
making the synchronization bidirectional.
- Add DevresLt<F: ForLt>, a wrapper around Devres that shortens 'static back
to the caller's borrow scope. Implement ForLt and CovariantForLt for Bar,
IoMem, and ExclusiveIoMem.
- Driver:
- Switch from index-based to pointer-based device ID info lookup, storing
static references in driver_data. Centralize device ID handling in
device_id.rs, removing the open-coded ACPI/OF matching logic and duplicate
ID table from driver.rs.
- I/O:
- Make I/O regions typed (with a dynamically-sized Region type for the
existing untyped case), create view types representing subregions of a
mapped I/O region, and add io_project!() for safely creating subviews.
- Split Io into a base trait (IoBase) and an extension trait (Io) with a
blanket implementation, preventing implementers from overriding provided
methods that unsafe code relies on.
- Add a SysMem backend for shared system memory with volatile access, and
make Coherent implement Io via an I/O view type. Add IoSysMap as sum type
of Mmio and SysMem. Add copying methods (memcpy_{from,to}io()) and
read_val()/write_val() for typed access.
- Replace dma_read!()/dma_write!() with io_read!()/io_write!() for
primitives and copying methods for aggregates; drop the old macros.
Convert nova-core to use I/O projection.
- Fix internal shortcut rule dispatch in the register!() macro, remove
unused rule arguments, and use path fragments for alias destinations.
- IRQ:
- Make irq::Registration compatible with lifetime-bound drivers by
removing the 'static bound on Handler/ThreadedHandler and
replacing Devres<RegistrationInner> with direct
request_irq()/free_irq() calls. Handlers can now directly own
lifetime-bound device resources.
- PCI:
- Convert IrqVectorRegistration to a lifetime-annotated owning type,
giving drivers explicit control over the allocation lifetime.
IrqVector embeds a resolved IrqRequest, making the conversion
infallible. Remove the redundant
request_irq()/request_threaded_irq() wrappers from pci::Device.
- Add pci_irq_type() C helper and expose it via irq_type() on
IrqVectorRegistration and IrqVector, returning PCI_IRQ_MSIX, PCI_IRQ_MSI,
or PCI_IRQ_INTX.
- Mark pci::Device refcount methods inline.
- Serdev:
- Add Rust abstractions for the serial device bus, including serdev::Driver
trait, serdev::Device wrapping struct serdev_device, and serdev::Adapter
implementing RegistrationOps. Includes a sample driver. Markus Probst
takes over as serdev maintainer for both C and Rust code.
- Misc:
- Split ForLt into a base trait (providing the Of<'a> GAT) and an unsafe
CovariantForLt subtrait guaranteeing covariance, enabling invariant types
(e.g. those containing Mutex<&'bound T>) to participate in the ForLt
abstraction.
- Fix Coherent read past EOF returning -ERANGE instead of zero.
- Fix firmware example UB by avoiding null-pointer ARef.
- misc:
- Avoid iattr allocation in kernfs listxattr by using kernfs_iattrs_noalloc().
- Unregister SoC bus on early device registration failure.
- Remove unused DMA_FENCE_TRACE Kconfig symbol.
- Fix /sys/module path in comment.
- Refactor ISA bus init to remove nested blocks.
- Remove redundant nodemask clears in numa_init().
- Add kernel-doc for fwnode_operations and sys_soc.h, mark internal property
data as private for kernel-doc, and add property.h/fwnode.h to driver-api
infrastructure docs.
- Add MAINTAINERS entry for sys_soc.h.
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Merge tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"container_of:
- Apply typeof_member(), remove the local __mptr variable to
eliminate variable shadowing warnings on nested container_of()
calls, and remove unnecessary parentheses
core:
- Add driver name to probe debug print for initcall_debug
- Avoid repeatedly printing the same 'Fixed dependency cycle' log
- Unwind device_add() on attribute creation failure in
attribute_container_add_class_device()
- Remove statistics group if encryption group creation fails in
transport_add_class_device()
debugfs:
- Fix lockdown check for mmap_prepare()
- Warn if file creation failed due to uninitialized debugfs
device property:
- Implement fw_devlink support for software nodes by adding
software_node_add_links(), which creates fwnode links from
DEV_PROP_REF properties to enable automatic probe ordering. Add
kunit-managed fwnode helpers and test coverage
- Fix infinite loop in fwnode_for_each_child_node() when the
secondary fwnode has more than one child. Add test cases
- Fix out-of-bounds access in software_node_get_reference_args() when
called with index -1 (UINT_MAX)
- Refactor to use RAII approach with __free()
- Add Bartosz Golaszewski as software node reviewer
firmware loader:
- Fix race where a sysfs fallback request can complete before being
queued as pending, leading to a use-after-free on the next fallback
request
- Reject 0-size built-in firmware and fail the build on empty
firmware files in CONFIG_EXTRA_FIRMWARE
kobject:
- Provide __KOBJ_ATTR() and __KOBJ_ATTR_RO/WO() initialization macros
and allow the constification of kobject attributes, enabling them
to reside in read-only memory
platform:
- Provide platform_device_set_of_node(), platform_device_set_fwnode(),
and platform_device_set_of_node_from_dev() helpers that encapsulate
firmware node reference counting for dynamically allocated platform
devices
Convert all in-tree users that manually assigned dev.of_node or
dev.fwnode, fixing a pre-existing refcount bug in powermac. Switch
to counting references of all firmware node types, not only OF
nodes
- Unify the release path for dynamically allocated platform devices
by removing platform_device_release_full(). Amend the fwnode setter
API contract to warn if a primary software node is overwritten. Add
KUnit tests for correct software node removal on device
unregistration
Rust:
- Auxiliary:
- Add registration_data_with() closure-based API for invariant
ForLt types
- Debugfs:
- Migrate BinaryWriter and BinaryReaderMut trait requirements
from kernel::transmute traits to zerocopy traits
- Device:
- Add BoundInternal device context and InternalBoundContext trait
for bus abstractions that need internal access to a bound
device.
- Make the lifetime on Core and CoreInternal invariant to prevent
coercion to shorter lifetimes
- Devres:
- Fix race between concurrent revokers where the losing revoker
could return before the winning revoker finished dropping the
inner data, causing use-after-free.
- Ensure revocation is complete before the device finishes
unbinding by making the synchronization bidirectional.
- Add DevresLt<F: ForLt>, a wrapper around Devres that shortens
'static back to the caller's borrow scope. Implement ForLt and
CovariantForLt for Bar, IoMem, and ExclusiveIoMem
- Driver:
- Switch from index-based to pointer-based device ID info lookup,
storing static references in driver_data. Centralize device ID
handling in device_id.rs, removing the open-coded ACPI/OF
matching logic and duplicate ID table from driver.rs
- I/O:
- Make I/O regions typed (with a dynamically-sized Region type
for the existing untyped case), create view types representing
subregions of a mapped I/O region, and add io_project!() for
safely creating subviews.
- Split Io into a base trait (IoBase) and an extension trait (Io)
with a blanket implementation, preventing implementers from
overriding provided methods that unsafe code relies on.
- Add a SysMem backend for shared system memory with volatile
access, and make Coherent implement Io via an I/O view type.
Add IoSysMap as sum type of Mmio and SysMem. Add copying
methods (memcpy_{from,to}io()) and read_val()/write_val() for
typed access.
- Replace dma_read!()/dma_write!() with io_read!()/io_write!()
for primitives and copying methods for aggregates; drop the old
macros. Convert nova-core to use I/O projection.
- Fix internal shortcut rule dispatch in the register!() macro,
remove unused rule arguments, and use path fragments for alias
destinations
- IRQ:
- Make irq::Registration compatible with lifetime-bound drivers
by removing the 'static bound on Handler/ThreadedHandler and
replacing Devres<RegistrationInner> with direct
request_irq()/free_irq() calls. Handlers can now directly own
lifetime-bound device resources
- PCI:
- Convert IrqVectorRegistration to a lifetime-annotated owning
type, giving drivers explicit control over the allocation
lifetime. IrqVector embeds a resolved IrqRequest, making the
conversion infallible. Remove the redundant
request_irq()/request_threaded_irq() wrappers from pci::Device.
- Add pci_irq_type() C helper and expose it via irq_type() on
IrqVectorRegistration and IrqVector, returning PCI_IRQ_MSIX,
PCI_IRQ_MSI, or PCI_IRQ_INTX.
- Mark pci::Device refcount methods inline
- Serdev:
- Add Rust abstractions for the serial device bus, including
serdev::Driver trait, serdev::Device wrapping struct
serdev_device, and serdev::Adapter implementing
RegistrationOps. Includes a sample driver. Markus Probst takes
over as serdev maintainer for both C and Rust code
- Misc:
- Split ForLt into a base trait (providing the Of<'a> GAT) and an
unsafe CovariantForLt subtrait guaranteeing covariance,
enabling invariant types (e.g. those containing Mutex<&'bound T>)
to participate in the ForLt abstraction.
- Fix Coherent read past EOF returning -ERANGE instead of zero.
- Fix firmware example UB by avoiding null-pointer ARef
misc:
- Avoid iattr allocation in kernfs listxattr by using
kernfs_iattrs_noalloc().
- Unregister SoC bus on early device registration failure.
- Remove unused DMA_FENCE_TRACE Kconfig symbol.
- Fix /sys/module path in comment.
- Refactor ISA bus init to remove nested blocks.
- Remove redundant nodemask clears in numa_init().
- Add kernel-doc for fwnode_operations and sys_soc.h, mark
internal property data as private for kernel-doc, and add
property.h/fwnode.h to driver-api infrastructure docs.
- Add MAINTAINERS entry for sys_soc.h"
* tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (129 commits)
rust: pci: expose the allocated interrupt type
PCI: Add pci_irq_type() to query the allocated interrupt type
rust: pci: remove request_irq() and request_threaded_irq() from Device
rust: pci: resolve IRQ in index() and embed IrqRequest in IrqVector
rust: pci: convert IrqVectorRegistration to a lifetime-managed owning type
kernfs: avoid iattr allocation in listxattr
rust: serdev: use ThisModule::as_ptr() instead of field access
ACPI/IORT: use platform_device_set_fwnode()
ACPI/APMT: use platform_device_set_fwnode()
firmware_loader: do not queue completed sysfs fallback requests
rust: pci: Mark Device refcount methods inline
rust: irq: make Registration compatible with lifetime-bound drivers
rust: net/phy: remove expansion from doc
rust: dma: return zero for Coherent reads past EOF
rust: io: register: use path fragment for alias destination
rust: io: register: remove unused rule arguments
rust: io: register: dispatch shortcut rules internally
MAINTAINERS: add sys_soc.h to DRIVER CORE
rust: debugfs: remove unsafe blocks from traits impl for Vec
rust: debugfs: migrate debugfs traits requirements to zerocopy
...
The SoC driver changes once more consist of many small fixes and
cleanups, that are to a large part the result of automated testing. On
platform specific drivers, this includes SoC specific code for xilinx,
freescale/nxp, qualcomm, TI, aspeed, omap, tegra, samsung, rockchip,
renesas, ixp4xx. In firmware drivers, we see a similar picture for
SCMI and qcomtee.
Aside from these, we see actual new hardware support in a few
areas:
- The Apple platform gets a new driver for low power states
- Updates to Qualcomm platform drivers add several new
hardware specific features and additional SoCs.
- Amlogic SoC support for A1 and T7 is added
- The Mediatek MMSYS driver is refactored as a cleanup.
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Merge tag 'soc-drivers-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC driver updates from Arnd Bergmann:
"The SoC driver changes once more consist of many small fixes and
cleanups, that are to a large part the result of automated testing.
On platform specific drivers, this includes SoC specific code for
xilinx, freescale/nxp, qualcomm, TI, aspeed, omap, tegra, samsung,
rockchip, renesas, ixp4xx. In firmware drivers, we see a similar
picture for SCMI and qcomtee.
Aside from these, we see actual new hardware support in a few areas:
- The Apple platform gets a new driver for low power states
- Updates to Qualcomm platform drivers add several new hardware
specific features and additional SoCs.
- Amlogic SoC support for A1 and T7 is added
- The Mediatek MMSYS driver is refactored as a cleanup"
* tag 'soc-drivers-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (157 commits)
soc: qcom: make QCOM_PDR_MSG selectable
soc: qcom: ubwc: Fix missing include
soc: qcom: ubwc: Fix link error when QCOM_SMEM=n
media: iris: Guard the QCOM_UBWC_CONFIG select with QCOM_SMEM
drm/msm: Guard the QCOM_UBWC_CONFIG select with QCOM_SMEM
dt-bindings: arm: qcom,ids: Add SoC ID for Snapdragon SDM 850
firmware: xilinx: Clear firmware notifiers across kexec transitions
firmware: xilinx: Release all peripheral devices from firmware
firmware: xilinx: Add support to clear EL3 PM state
firmware: xilinx: Propagate actual error from feature check
firmware: xilinx: Use TF-A feature check for TF-A-specific APIs
bus: fsl-mc: drop unused assignment of acpi_device_id::driver_data
soc: fsl: qe: check platform_driver_register() in qe_ic_of_init()
phy: lynx-10g: use RCW override procedure for dynamic protocol change
soc: fsl: guts: implement the RCW override procedure
dt-bindings: fsl: layerscape-dcfg: define DCFG_DCSR region
soc: fsl: guts: make fsl_soc_data available after fsl_guts_init()
soc: fsl: guts: make it easier to determine on which SoC we are running
soc: fsl: guts: add a central fsl_guts_read() function
soc: fsl: guts: add a global structure to hold state
...
features
- Unify the handling of CPU core types (performance, efficient, etc) by
mapping the vendor-specific types to Linux ones
- Continuation of the work of Ahmed Darwish to centralize CPUID leafs
representation
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Merge tag 'x86_cpu_for_v7.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpuid updates from Borislav Petkov:
- Get rid of static_cpu_has() - one less API to care about testing CPU
features
- Unify the handling of CPU core types (performance, efficient, etc) by
mapping the vendor-specific types to Linux ones
- Continuation of the work of Ahmed Darwish to centralize CPUID leaf
representation
* tag 'x86_cpu_for_v7.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/CPU: Rename struct cpuid_read_output to struct cpuid_output
x86/cpu/scattered: Sort it properly
x86/cpu: Use parsed CPUID(0x1)
x86/lib: Add CPUID(0x1) family and model calculation
x86/cpu: Use parsed CPUID(0x0)
x86/cpu/transmeta: Rescan CPUID(0x1) after modifying capabilities
x86/topology: Add TOPO_CPU_TYPE_LOW_POWER
x86/topology: Name the AMD core-type values
x86/topo: Map vendor CPU types to generic Linux such types
x86/bugs: Don't use cpu-type matching in cpu_vuln_blacklist
x86/cpu: Hide and rename static_cpu_has()
Toolchain and infrastructure:
- Warn when using 'bindgen' < 0.72.1 with 'libclang' >= 22, since that
combination may fail to build. It includes a probe for the bug in
case 'bindgen' happens to be patched, and tests.
In parallel, Nathan updated the instructions for the kernel.org
LLVM+Rust toolchains so that the latest version of 'bindgen' is
installed, which should avoid some of these situations.
- Support testing 'rust_is_available.sh' with 'bash' as '/bin/sh'.
- Fix an objtool warning by adding one more 'noreturn' function for
Rust 1.99.0 (expected 2026-10-01).
- Fix build error in the 'rusttest' target due to ambiguity when the
'rustc-dev' component is installed, which was uncovered by the work
to support Rust's GCC backend ('rustc_codegen_gcc').
- Fix future Clang warnings in the upcoming powerpc support due to
macro redefinitions in the UAPI helper header by including the
arch-aware 'ioctl.h' header.
'kernel' crate:
- Rework module ownership support:
- Move the module-related types into a new 'module' module and make
the 'THIS_MODULE' pointer a constant of 'ModuleMetadata' so that
modules can provide the pointer in const contexts, and add a
'this_module' 'const fn' to retrieve it.
This was enabled by upstream Rust's work on the 'const_mut_refs'
and 'const_refs_to_static' features which were stabilized back
in Rust 1.83.0.
- Teach '#[vtable]' to associate implementations with their owning
module, defaulting to the local one, including fallbacks for
doctests, uses within the 'kernel' crate (like upcoming KUnit
'#[test]'s for DRM) and 'rusttest'.
- Set 'fops.owner' from the module pointer for DRM and miscdevice.
- Migrate Rust Binder and configfs away from the old 'THIS_MODULE'
'static' and finally remove it from the 'module!' macro.
- 'num' module:
- Add the new 'casts' module for lossless integer conversions.
Rust's 'core' library's 'From' implementations do not cover
conversions that are not portable or future-proof. However, the
kernel supports a narrower set of architectures, which makes it
helpful to provide more infallible conversions, instead of having
developers use 'as' casts, which carry the risk of silently
losing data.
This goes along with previous work we did to avoid casts in Rust
kernel code since they are more powerful than needed.
Thus, provide safe 'const' conversion functions (e.g.
'usize_as_u64' and 'u64_into_u8'), as well as the 'FromSafeCast'
and 'IntoSafeCast' extension traits that provide conversions that
are known to be lossless in the kernel, and an 'arch' submodule
defining conversions that are known to be lossless on particular
architectures (e.g. 64-bit platforms). For instance:
// Conversion in const context.
const USIZED_CONST: usize = u8_as_usize(255u8);
// Non-const conversions.
let a = u64::from_safe_cast(4096usize);
let b: u64 = 4096usize.into_safe_cast();
- Add 'Bounded::shr_exact' method in the vein of 'try_shrink' which
shifts a bounded right only if it loses no set bits.
- Fix unsoundness issue in the 'Bounded::shr' method by rejecting,
at compile-time, shifts of at least the type's bit width.
- 'fmt' module:
- Route '{:p}' raw pointer formatting through the kernel's hashed
'%p' format to prevent address leaks, including support for width
and padding. Include tests for both 'no_hash_pointers' case and
the default (hashed) one.
- Fix the '{:p}' forwarding implementation, which could print the
address of a temporary stack variable.
- 'time' module:
- Make 'Delta' generic over its time unit, with a default unit of
nanoseconds ('Nsec'), preserving the existing behavior. Then, add
a 'Jiffy' time unit.
- Add the 'Delta::as_millis_ceil()' method.
- Fix 'as_micros_ceil()' rounding near 'i64::MAX', which could
yield a result one microsecond too small.
- 'sync' module:
- Implement 'ForeignOwnable' for 'ARef<T>', allowing C code to own
an 'ARef<T>'.
- Add a safe abstraction for 'rcu_barrier()'.
- 'error' module: add all of the remaining error codes, except the
deprecated compatibility aliases.
- 'bug' module:
- Fix build error on UML in 'warn_on!' for callers from within
the 'kernel' crate.
- Fix future 'dead_code' warning on arm and loongarch64 and under
'CONFIG_BUG=n' in 'warn_on!', which would trigger with the
upcoming SRCU abstractions.
- Fix future build error in 'rusttest' on cross-compilation cases,
which would trigger when 'warn_on!' has callers inside the
'kernel' crate.
- 'bitfield' module: fix build error for the upcoming support for
Rust's GCC backend ('rustc_codegen_gcc') by always inlining a couple
conversions used in tests.
'pin-init' crate:
- User-visible changes:
- Merge the '__pinned_init' and '__init' methods and make 'Init'
a marker trait.
- Introduce public APIs 'raw_init' and 'raw_try_init' to prevent
users from needing to invoke the internal
'__pinned_init'/'__init' methods.
- Emit errors for duplicate '#[pin]' attributes.
- Link 'Zeroable::zeroed' and 'pin_init::zeroed' in documentation.
- Other changes:
- Fix unwind safety issues.
- Clean up lint 'allow' and 'expect's.
- Overhaul '#[cfg]' handling to pave the way for tuple structs and
self-referential structs.
- Mark many functions as '#[inline]' for better codegen with '-C
opt-level=s' ('CC_OPTIMIZE_FOR_SIZE').
'MAINTAINERS':
- Update 'MODULE SUPPORT' to cover the new 'module' module.
And some other fixes, cleanups and improvements.
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Merge tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Warn when using 'bindgen' < 0.72.1 with 'libclang' >= 22, since
that combination may fail to build. It includes a probe for the bug
in case 'bindgen' happens to be patched, and tests
In parallel, Nathan updated the instructions for the kernel.org
LLVM+Rust toolchains so that the latest version of 'bindgen' is
installed, which should avoid some of these situations
- Support testing 'rust_is_available.sh' with 'bash' as '/bin/sh'
- Fix an objtool warning by adding one more 'noreturn' function for
Rust 1.99.0 (expected 2026-10-01)
- Fix build error in the 'rusttest' target due to ambiguity when the
'rustc-dev' component is installed, which was uncovered by the work
to support Rust's GCC backend ('rustc_codegen_gcc')
- Fix future Clang warnings in the upcoming powerpc support due to
macro redefinitions in the UAPI helper header by including the
arch-aware 'ioctl.h' header
'kernel' crate:
- Rework module ownership support:
- Move the module-related types into a new 'module' module and
make the 'THIS_MODULE' pointer a constant of 'ModuleMetadata'
so that modules can provide the pointer in const contexts, and
add a 'this_module' 'const fn' to retrieve it
This was enabled by upstream Rust's work on the 'const_mut_refs'
and 'const_refs_to_static' features which were stabilized back
in Rust 1.83.0
- Teach '#[vtable]' to associate implementations with their
owning module, defaulting to the local one, including fallbacks
for doctests, uses within the 'kernel' crate (like upcoming
KUnit '#[test]'s for DRM) and 'rusttest'
- Set 'fops.owner' from the module pointer for DRM and
miscdevice
- Migrate Rust Binder and configfs away from the old
'THIS_MODULE' 'static' and finally remove it from the 'module!'
macro
- 'num' module:
- Add the new 'casts' module for lossless integer conversions
Rust's 'core' library's 'From' implementations do not cover
conversions that are not portable or future-proof. However, the
kernel supports a narrower set of architectures, which makes it
helpful to provide more infallible conversions, instead of
having developers use 'as' casts, which carry the risk of
silently losing data
This goes along with previous work we did to avoid casts in
Rust kernel code since they are more powerful than needed
Thus, provide safe 'const' conversion functions (e.g.
'usize_as_u64' and 'u64_into_u8'), as well as the
'FromSafeCast' and 'IntoSafeCast' extension traits that provide
conversions that are known to be lossless in the kernel, and an
'arch' submodule defining conversions that are known to be
lossless on particular architectures (e.g. 64-bit platforms).
For instance:
// Conversion in const context.
const USIZED_CONST: usize = u8_as_usize(255u8);
// Non-const conversions.
let a = u64::from_safe_cast(4096usize);
let b: u64 = 4096usize.into_safe_cast();
- Add 'Bounded::shr_exact' method in the vein of 'try_shrink'
which shifts a bounded right only if it loses no set bits
- Fix unsoundness issue in the 'Bounded::shr' method by
rejecting, at compile-time, shifts of at least the type's bit
width
- 'fmt' module:
- Route '{:p}' raw pointer formatting through the kernel's hashed
'%p' format to prevent address leaks, including support for
width and padding. Include tests for both 'no_hash_pointers'
case and the default (hashed) one
- Fix the '{:p}' forwarding implementation, which could print the
address of a temporary stack variable
- 'time' module:
- Make 'Delta' generic over its time unit, with a default unit of
nanoseconds ('Nsec'), preserving the existing behavior. Then,
add a 'Jiffy' time unit
- Add the 'Delta::as_millis_ceil()' method
- Fix 'as_micros_ceil()' rounding near 'i64::MAX', which could
yield a result one microsecond too small
- 'sync' module:
- Implement 'ForeignOwnable' for 'ARef<T>', allowing C code to
own an 'ARef<T>'
- Add a safe abstraction for 'rcu_barrier()'
- 'error' module: add all of the remaining error codes, except the
deprecated compatibility aliases
- 'bug' module:
- Fix build error on UML in 'warn_on!' for callers from within
the 'kernel' crate
- Fix future 'dead_code' warning on arm and loongarch64 and under
'CONFIG_BUG=n' in 'warn_on!', which would trigger with the
upcoming SRCU abstractions
- Fix future build error in 'rusttest' on cross-compilation
cases, which would trigger when 'warn_on!' has callers inside
the 'kernel' crate
- 'bitfield' module: fix build error for the upcoming support for
Rust's GCC backend ('rustc_codegen_gcc') by always inlining a
couple conversions used in tests
'pin-init' crate:
- User-visible changes:
- Merge the '__pinned_init' and '__init' methods and make 'Init'
a marker trait
- Introduce public APIs 'raw_init' and 'raw_try_init' to prevent
users from needing to invoke the internal '__pinned_init' and
'__init' methods
- Emit errors for duplicate '#[pin]' attributes
- Link 'Zeroable::zeroed' and 'pin_init::zeroed' in documentation
- Other changes:
- Fix unwind safety issues
- Clean up lint 'allow' and 'expect's
- Overhaul '#[cfg]' handling to pave the way for tuple structs
and self-referential structs
- Mark many functions as '#[inline]' for better codegen with '-C
opt-level=s' ('CC_OPTIMIZE_FOR_SIZE')
'MAINTAINERS':
- Update 'MODULE SUPPORT' to cover the new 'module' module
And some other fixes, cleanups and improvements"
* tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (54 commits)
rust: add functions and traits for lossless integer conversions
rust: kernel: add `LocalModule` fallback for `#[vtable]` `impl`s
rust: fmt: route {:p} through HashedPtr to prevent address leaks
rust: fmt: fix {:p} printing stack addresses
rust: module: update MAINTAINERS to cover module.rs
rust: macros: remove `THIS_MODULE` static from `module!`
rust_binder: use `LocalModule` for `THIS_MODULE`
rust: configfs: use `LocalModule` for `THIS_MODULE`
rust: miscdevice: set fops.owner from driver module pointer
rust: drm: set fops.owner from driver module pointer
rust: macros: auto-insert OwnerModule in #[vtable]
rust: doctest: add LocalModule fallback for #[vtable] ThisModule
rust: module: add `THIS_MODULE` const to `ModuleMetadata` trait
rust: module: move module types into `module.rs`
rust: num: add Bounded::shr_exact
rust: num: reject Bounded::shr overshifts at build time
rust: num: use const_assert! in Bounded
rust: uapi: replace direct asm-generic/ioctl.h include with linux/ioctl.h
rust: time: add Delta::as_millis_ceil()
rust: time: add jiffies time unit for Delta
...
QCOM_UBWC_CONFIG is about to depend on QCOM_SMEM. Guard the DRM_MSM
select with 'if ARCH_QCOM && QCOM_SMEM', and add
'depends on QCOM_SMEM || QCOM_SMEM=n' so a built-in driver is never
selected against a missing or modular SMEM.
Fixes: 1b445022d1 ("soc: qcom: ubwc: Get HBB from SMEM")
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- Fix DPT Allocation paths (Maarten)
- Fixes around UM queue BO (Jia)
- Order ring writes before ring tail updates (Matthew Brost)
- Add termination on resume for PXP (Daniele)
- Document Sentinel and make CTX_TIMESTAMP read TOCTOU-safe (Gajendra)
- Fix sync entry leak on OA config emit failure (Linmao Li)
- Check managed mutex initilization errors (Linmao Li)
- Fix min frequency setting (Vinay)
- Fix xe_device_probe error path (Raag)
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Merge tag 'drm-xe-fixes-2026-08-13' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes
Driver Changes:
- Fix DPT Allocation paths (Maarten)
- Fixes around UM queue BO (Jia)
- Order ring writes before ring tail updates (Matthew Brost)
- Add termination on resume for PXP (Daniele)
- Document Sentinel and make CTX_TIMESTAMP read TOCTOU-safe (Gajendra)
- Fix sync entry leak on OA config emit failure (Linmao Li)
- Check managed mutex initilization errors (Linmao Li)
- Fix min frequency setting (Vinay)
- Fix xe_device_probe error path (Raag)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/an4ZogmPqP2Xtfx3@fedora
- Revert fair scheduler patches and mark fair policy as experimental due
to reported regressions.
- Fix OOB read in connector/hdmi infoframe.
- Handle invalid scaling parameters and empty messages in log target.
- Skip attempting to populate unmapped pages in amdxdna.
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Merge tag 'drm-misc-fixes-2026-08-13' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
drm-misc-fixes for v7.3:
- Revert fair scheduler patches and mark fair policy as experimental due
to reported regressions.
- Fix OOB read in connector/hdmi infoframe.
- Handle invalid scaling parameters and empty messages in log target.
- Skip attempting to populate unmapped pages in amdxdna.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/a9b38792-bdd0-42da-a46a-7a048c26c0c2@linux.intel.com
When scale is large enough that scaled_font exceeds the display
dimensions, rows or columns become 0. A columns value of 0 causes
an infinite loop in drm_log_draw_kmsg_record() because the loop
never decrements len.
Check for zero rows/columns in drm_log_setup_modeset() and return
an error, cleaning up the already allocated buffer to avoid a leak.
Fixes: 8a4b913df4 ("drm/log: Add integer scaling support")
Signed-off-by: Shixiong Ou <oushixiong@kylinos.cn>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260729084815.692944-1-oushixiong1025@163.com
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
drm_log_draw_kmsg_record() accesses s[len - 1] to strip the trailing
newline, but len is unsigned int. If len is 0, the subtraction wraps
to UINT_MAX, causing an out-of-bounds read.
Add an early return when len is 0.
Fixes: 25e2c2a3ef ("drm/log: Color the timestamp, to improve readability")
Signed-off-by: Shixiong Ou <oushixiong@kylinos.cn>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260729084520.688087-1-oushixiong1025@163.com
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
The scale module parameter can be set to 0 via kernel command line.
When scale is 0, scaled_font_h and scaled_font_w become 0, causing
a division by zero in the rows/columns calculation.
Since the scale module parameter is read-only (0444 permissions), it
cannot be changed at runtime via sysfs. Clamp it to 1 once in
drm_log_register().
Fixes: 8a4b913df4 ("drm/log: Add integer scaling support")
Signed-off-by: Shixiong Ou <oushixiong@kylinos.cn>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260730014440.66323-1-oushixiong1025@163.com
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
In cases where min frequency was actually greater than BMG_MIN_FREQ,
we were not using the updated min frequency as there was a missing
call to pc_action_query_task_state() between the two settings of
min frequency. Since we know what min_freq was last set, use that
cached value while comparing to BMG_MIN_FREQ to fix this issue.
v2: pc->freq_ready is not set until after pc_adjust_freq_bounds(). Stay
with pc_action_query_task_state() instead.
v3: Update commit message (Stuart)
Fixes: bdde16c9ac ("drm/xe/bmg: Update Wa_14022085890")
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://patch.msgid.link/20260805234649.2076384-1-vinay.belgaumkar@intel.com
(cherry picked from commit a2c2d2b13a)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
drmm_mutex_init() can fail while registering its managed cleanup action.
On failure, the reset path destroys the mutex, so continuing OA setup
leaves an unusable lock that later paths may acquire.
Return the error from per-GT OA initialization and abort device-wide OA
initialization if the metrics lock cannot be initialized.
Fixes: a9f905ae7b ("drm/xe/oa/uapi: Initialize OA units")
Fixes: cdf02fe1a9 ("drm/xe/oa/uapi: Add/remove OA config perf ops")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260713083053.321091-1-lilinmao@kylinos.cn
(cherry picked from commit 360b293de2)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
xe_oa_emit_oa_config() releases the sync entries and the syncs array
only on its success path. When it fails before the point of no return
(fence allocation, config buffer allocation or batch submission), it
returns without touching stream->syncs.
The stream open path handles such failures in the caller, but
xe_oa_config_locked() propagates the error without any cleanup, so the
syncs array and the fence references held by the parsed entries are
leaked. The next config ioctl overwrites stream->syncs, making the
memory unreachable for good.
Clean up the parsed syncs when xe_oa_emit_oa_config() fails, matching
the cleanup done by the stream open error path.
Fixes: 9920c8b88c ("drm/xe/oa: Add syncs support to OA config ioctl")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patch.msgid.link/20260731011932.3426219-1-lilinmao@kylinos.cn
(cherry picked from commit 8af97b3da2)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Problem: CTX_TIMESTAMP MMIO reads could be stale if a context
switched out between check and read; LRC stores a sentinel while
a context starts that must not be treated as a real timestamp.
Fix: Check the LRC-stored sentinel before and after the MMIO read;
return the LRC value if the context switched out to avoid TOCTOU.
Note: Keep XE_LRC_CTX_TIMESTAMP_ACTIVE in xe_lrc.h as the
canonical sentinel.
Fixes: d243ef6a39 ("drm/xe/lrc: Refactor xe_lrc_timestamp to simplify logic")
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/7956
Assisted-by: GitHub-Copilot:claude-sonnet-5
Signed-off-by: Gajendra Uttamchand <gajendra.uttamchand@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Acked-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260810071812.213358-4-gajendra.uttamchand@intel.com
(cherry picked from commit a806534474)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Suspend/resume causes the PXP keys to become invalid, but doesn't
actually kill the session. The driver also doesn't explicitly kill and
re-start the session until a new PXP request comes in, which means that
the "zombie" session can potentially stick around if there are no new
requests from userspace. While this is not an issue for PXP, HDCP has a
new behavior starting on PTL where a communication is sent to GSC if a
session is active at suspend time (even if it doesn't have a valid key),
which can lead to delays in the suspend flow if we suspend while the
zombie session is still active.
To avoid this, we can trigger a termination on resume and kill the
zombie session immediately, instead of delaying the termination to the
next PXP request. Due to restrictions in the rpm suspend/resume flow, we
can't call the termination flow from within the resume call itself, so
the pxp irq worker is expanded to cover this scenario.
The existing logic in the worker doesn't work as-is for the new flow,
because the pm_get_if_active will fail if the worker runs before the
pci_resume call has completed (which is possible, since we queue it
from within that call) or after we're started to suspend again.
Given that we always want to run the worker after a resume (differently
from the irq case, where we want to skip if we're suspended), we can
solve this by just taking the PM reference before queueing the worker.
As part of this rework, the pxp->events variable has been moved to atomic,
to avoid having to take xe->irq.lock from non-irq related paths.
Fixes: b1dcec9bd8 ("drm/xe/ptl: Enable PXP for PTL")
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Julia Filipchuk <julia.filipchuk@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Link: https://patch.msgid.link/20260720222757.3876338-2-daniele.ceraolospurio@intel.com
(cherry picked from commit 757bda2b8b)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
The ring buffer and the LRC context image are both mapped WC, so the ring
tail update can become visible to the device before the ring contents it
is meant to publish.
The GuC CT send does contain an xe_device_wmb(), so sending the H2G would
flush the ring contents. The problem is that it comes too late:
xe_lrc_set_ring_tail() publishes the tail before the H2G is sent, and the
device samples the tail from the context image independently of it, either
at context switch-in or while the context is already resident. A submitter
which is interrupted between updating the tail and sending its H2G
therefore leaves the device free to observe the new tail while the ring
contents behind it are not yet visible:
1. Thread A emits a job into the ring, sets the tail to T_A and sends
the H2G, which flushes A's ring contents. The GuC starts scheduling
the context in, but it is not executing yet.
2. Thread B emits a job into ring[T_A..T_B]. Those writes are not yet
visible to the device.
3. Thread B updates the ring tail to T_B. That write targets a
different page and becomes visible first.
4. Thread B is interrupted before it sends its H2G, so the flush which
would have published ring[T_A..T_B] has not happened yet.
5. The context is switched in and samples the ring tail from the
context image, picking up T_B rather than T_A.
6. The GPU executes A's job, advances HEAD to T_A, and continues on to
ring[T_A..T_B], which still holds the previous wrap's contents, so
the CS parses stale commands.
The result is command stream corruption, which typically manifests as a
hang or a spurious pagefault rather than anything that points back at the
submission path.
Kernel jobs are by far the most likely to hit this. Kernel queues such as
the migration queue are shared and can be driven by many threads
concurrently, producing back-to-back submissions on an LRC which is
already executing. User queues are typically tied to a single submitting
thread, so the same interleaving is much harder to produce.
Add an xe_device_wmb() at the end of xe_lrc_write_ring() so that it covers
every ring tail publication site, and so the invariant is local: once
xe_lrc_write_ring() returns, the ring contents are visible to the device.
Fixes: dd08ebf6c3 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/8651
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/7810
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Assisted-by: GitHub_Copilot:claude-opus-5
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://patch.msgid.link/20260807171716.140475-1-matthew.brost@intel.com
(cherry picked from commit 136360290f)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
On Pre-Xe3p platform, the GAM write the UM queue through DPA using UC.
if GuC reads the queue via GGTT (WB), stale data may be observed
when the cacheline has been polluted by another agent.
To match the GAM's UC writes, configure the GuC mapping as UC as well.
Fixes: 9c57bc0865 ("drm/xe/lnl: Drop force_probe requirement")
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: <stable@vger.kernel.org> # v6.12+
Signed-off-by: Jia Yao <jia.yao@intel.com>
Reviewed by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260804165057.129529-4-jia.yao@intel.com
(cherry picked from commit 9daa302a82)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
On iGPU, the UM queue BO is allocated in system memory. On dGFX, the BO
was previously created in system memory and later reallocated in
xe_guc_realloc_post_hwconfig(). Allocate the UM queue BO directly in
VRAM on dGFX, where it is ultimately required.
Fixes: 9c57bc0865 ("drm/xe/lnl: Drop force_probe requirement")
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: <stable@vger.kernel.org> # v6.12+
Signed-off-by: Jia Yao <jia.yao@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260804165057.129529-3-jia.yao@intel.com
(cherry picked from commit ace076ef0a)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Move the UM queues into a dedicated BO (ads->um_queue_bo) and avoid
CPU memset operations on it, which eliminates the CPU as a potential
cacheline-polluting agent and helps maintain consistency between GAM
writes and GuC reads.
We also need to ensure the base_dpa for the queue is contiguous on hw
where this is used instead of a GGTT address. Another good reason to
split this out to a separate BO.
Fixes: 9c57bc0865 ("drm/xe/lnl: Drop force_probe requirement")
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: <stable@vger.kernel.org> # v6.12+
Signed-off-by: Jia Yao <jia.yao@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260804165057.129529-2-jia.yao@intel.com
(cherry picked from commit 6af05de0dc)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Remove the fallback for VRAM to system memory, I tested it and that
doesn't work at all, only a black screen with pipe fault errors were
observed.
On systems with media GT, extra latency is added when accessing stolen
memory when the GT is in MC6. Since we additionally aren't counting how
much memory is used for stolen and we could in theory fill up the
entire stolen area with DPT's, avoid using stolen and only use the
default memory region.
Using stolen may also result in random system hangs under load.
Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/7513
Fixes: 775d0adc01 ("drm/xe/fbdev: Limit the usage of stolen for LNL+")
Cc: <stable@vger.kernel.org> # v6.12+
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260630135523.1775379-2-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Acked-by: Matthew Brost <matthew.brost@intel.com> #teams
(cherry picked from commit a196406a38)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
If a valid signature is seen at the default offset, use the default
size/offset for discovery.
Fixes: 01bdc7e219 ("drm/amdgpu: New interface to get IP discovery binary v3")
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5447
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 46a0df99a0)
Cc: stable@vger.kernel.org
Same change as for h264, avoids overflow later when calculating
min dpb size.
Signed-off-by: David Rosca <david.rosca@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a4b0720e4f)
Cc: stable@vger.kernel.org
The PCIe L1 low‑power settings for NBIF 6.3.1 were never applied due to
unresolved register mapping, which caused the relevant code to be compiled out.
As a result, the PCIe link could not enter L1/L23 power‑down states or transition to L0s.
Properly configure the link control register to enable L1 and L23 power‑down,
and permit L0s link transitions. Keep LTR disabled and let the PCI core enable it
only after verifying end‑to‑end root complex support across switches.
Fixes: 894c6d3522 ("drm/amdgpu: Add nbif v6_3_1 ip block support")
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Kenneth Feng <Kenneth.feng@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit c2417f9fd7)
Cc: stable@vger.kernel.org
The commit cited by the Fixes tag added separate limited and full-range
BT.2020 YCbCr entries to the DCE output CSC tables, but populated both
entries with the same matrix copied from the common DC table. That
matrix combined full-range scaling with limited-range luma offset and was
incorrect for both limited and full-range output.
Replace the coefficients in both entries in the DCE paths with those from
the new COLOR_SPACE_YCBCR2020_LIMITED_TYPE
and COLOR_SPACE_YCBCR2020_FULL_TYPE entries in the preceding commit
("drm/amd/display: fix BT.2020 YCbCr limited output CSC matrix").
Fixes: 51e6668ab4 ("drm/amd/display: add missing CSC entries for BT.2020 for DCE IPs")
Assisted-by: OpenAI-Codex:GPT-5.6-Sol
Tested-by: Igor Paunovic <royalnet026@gmail.com>
Tested-by: Satyajit Roy <sroy14@alum.utk.edu>
Signed-off-by: Nathan Lucas <nlucasgit@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 14c8726b79)
Cc: stable@vger.kernel.org
COLOR_SPACE_YCBCR2020_TYPE, which is selected for
COLOR_SPACE_2020_YCBCR_LIMITED color_space, has coefficients that are
incorrect for limited-range output. Its luma and chroma scaling is
full-range so output is too bright and colors are incorrect.
COLOR_SPACE_YCBCR2020_TYPE is closer to a full-range conversion matrix with
incorrect luma offset, so correct the luma offset for full-range and rename
it to COLOR_SPACE_YCBCR2020_FULL_TYPE.
Add COLOR_SPACE_YCBCR2020_LIMITED_TYPE with correct scaling and range for
limited-range output.
Fix related functions so COLOR_SPACE_YCBCR2020_LIMITED_TYPE and
COLOR_SPACE_YCBCR2020_FULL_TYPE are correctly selected based on
dc_color_space.
Derivation of both matrices follows ITU-T H.273:
Table 4, MatrixCoefficients 9, BT.2020-NCL weights:
KR = 0.2627, KB = 0.0593, KG = 1 - KR - KB = 0.6780.
Equations 45-47 in matrix form:
[ KR KG KB 0 ]
M2020_NCL = [ -KR/(2(1-KB)) -KG/(2(1-KB)) 1/2 0 ]
[ 1/2 -KG/(2(1-KR)) -KB/(2(1-KR)) 0 ]
[ 0 0 0 1 ]
Limited and Full transforms based on equations 30-32 and 36-38 with bit
depth 10, normalized by 1023:
[ 876/1023 0 0 64/1023 ]
MLimited = [ 0 896/1023 0 512/1023 ]
[ 0 0 896/1023 512/1023 ]
[ 0 0 0 1 ]
[ 1023/1023 0 0 0 ]
MFull = [ 0 1023/1023 0 512/1023 ]
[ 0 0 1023/1023 512/1023 ]
[ 0 0 0 1 ]
M2020_NCL_Limited = MLimited x M2020_NCL
M2020_NCL_Full = MFull x M2020_NCL
The upper three rows of M2020_NCL_* are stored in CR, Y, CB order. Each
M2020_NCL_* value is stored as Round(value * 8192) in its 16-bit
two's-complement representation.
Fixes: 973a9c810c ("drm/amd/display: Fix COLOR_SPACE_YCBCR2020_TYPE matrix")
Assisted-by: OpenAI-Codex:GPT-5.6-Sol
Tested-by: Igor Paunovic <royalnet026@gmail.com>
Tested-by: Satyajit Roy <sroy14@alum.utk.edu>
Signed-off-by: Nathan Lucas <nlucasgit@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3b906e1dc7)
Cc: stable@vger.kernel.org
After a recent change VCE now hangs when VCE_CMD_END is emitted
after a pipeline sync without VM flush.
Implement insert_end to correctly insert only one VCE_CMD_END per job.
Fixes: bc639a9ead ("drm/amdgpu: always emit the job vm fence")
Signed-off-by: David Rosca <david.rosca@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 8897ea8c76)
Cc: stable@vger.kernel.org
Use correct size for message buffer = sizeof(struct ruvd_msg).
Add ITSCALING_TABLE_BUFFER size.
Signed-off-by: David Rosca <david.rosca@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 37519d007e)
Cc: stable@vger.kernel.org
This needs to use pitch instead of width. Also reject pitch
over 4096 to avoid overflow.
Signed-off-by: David Rosca <david.rosca@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit b41c8cb12e)
Cc: stable@vger.kernel.org
This should use actual number of references from the decode
message, instead of maximum derived from level.
Signed-off-by: David Rosca <david.rosca@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 64b525edb7)
Cc: stable@vger.kernel.org
Fixes potential overflow in DPB size calculations.
Signed-off-by: David Rosca <david.rosca@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 05e1387d15)
Cc: stable@vger.kernel.org
dGPUs with an internal PCIe switch expose graphics functions below the
switch downstream port. The automatic ASPM check uses the display
endpoint and evaluates the internal link instead of the host link.
Use the switch upstream port for the check and report the selected
link.
Fixes: 0ab5d711ec ("drm/amd: Refactor `amdgpu_aspm` to be evaluated per device")
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 4e0d6f2876)
Cc: stable@vger.kernel.org
radeon_driver_load_kms() calls pm_runtime_use_autosuspend() for PX
devices, but radeon_driver_unload_kms() does not call the matching
pm_runtime_dont_use_autosuspend() during teardown.
If the autosuspend delay is set to a negative value while autosuspend
is enabled, the runtime PM core increments usage_count to prevent
runtime suspend. Without calling pm_runtime_dont_use_autosuspend()
during teardown, this reference is not dropped.
The documentation for pm_runtime_use_autosuspend() also notes that it
is important to undo it with pm_runtime_dont_use_autosuspend() at
driver exit time, unless runtime PM was initially enabled with
devm_pm_runtime_enable().
Add the missing pm_runtime_dont_use_autosuspend() call to the driver
unload path.
This issue was found by manual code inspection.
Fixes: 10ebc0bc09 ("drm/radeon: add runtime PM support (v2)")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 0fdc1ff82e)
Cc: stable@vger.kernel.org
We shouldn't return early if we need to emit spm update.
Reviewed-by: David Rosca <david.rosca@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 54a118f1d7)
Cc: stable@vger.kernel.org
amdgpu_dm_crtc_set_vblank() dereferences acrtc_state->stream when
vblank is enabled/queried from DRM_IOCTL_MODE_CRTC_GET_SEQUENCE before
a stream is attached to it.
BUG: kernel NULL pointer dereference, address: 0000000000000008
RIP: amdgpu_dm_crtc_set_vblank+0x6b/0x4d0 [amdgpu]
Call Trace:
drm_vblank_enable
drm_vblank_get
drm_crtc_get_sequence_ioctl
drm_ioctl_kernel
drm_ioctl
Reproduced by running VKCTS with WSI tests enabled on RADV.
Guard the enable path on acrtc_state->stream being non-NULL, matching
the existing checks in this function.
Fixes: 34d66bc7ff ("drm/amd/display: Fix Xorg desktop unresponsive on Replay panel")
Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 7b1b31bf69)
Cc: stable@vger.kernel.org
AMDGPU_GEM_CREATE checked domain bits against AMDGPU_GEM_DOMAIN_MASK,
but did not validate domain combinations. Userspace could combine
CPU|GTT|VRAM with DOORBELL, GDS, GWS, or OA, making
amdgpu_bo_placement_from_domain() exceed AMDGPU_BO_MAX_PLACEMENTS and
hit BUG_ON().
Allow combinations only within CPU/GTT/VRAM, and require non-CPU/GTT/
VRAM domains to be specified one at a time. Return -EINVAL for invalid
combinations in amdgpu_gem_create_ioctl().
v2: Rename helper from amdgpu_gem_domain_valid() to
amdgpu_gem_are_domains_valid() (Christian)
Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit db39852d0c)
Cc: stable@vger.kernel.org
amdgpu_cs_pass1() dispatches on chunk_id once per chunk without
rejecting repeated ids. p->uf_bo is a single-slot field, so a
submission carrying two AMDGPU_CHUNK_ID_FENCE chunks runs
amdgpu_cs_p1_user_fence() twice, and the second run overwrites
p->uf_bo with a freshly referenced BO without dropping the reference
taken by the first.
amdgpu_cs_parser_fini() only unrefs the final p->uf_bo, so every FENCE
chunk but the last leaks a BO reference. The leaked BO outlives handle
close and process exit.
Reject duplicate FENCE chunks the same way commit fec5f8e8c6
("drm/amdgpu: disallow multiple BO_HANDLES chunks in one submit") did
for p->bo_list.
Fixes: d38ceaf99e ("drm/amdgpu: add core driver (v4)")
Reported-by: Yuhao Jiang <danisjiang@gmail.com>
Assisted-by: Claude:claude-opus-5
Cc: stable@vger.kernel.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Junrui Luo <moonafterrain@outlook.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 665b1fc2a1)
Mark the fair policy as experimental until reported regressions are
addressed.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Luke.Wildhardt@proton.me
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Philipp Stanner <phasta@kernel.org>
Cc: Christian König <ckoenig.leichtzumerken@gmail.com>
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
Link: https://lore.kernel.org/r/20260811163139.99746-20-tvrtko.ursulin@igalia.com
