Add the rkvdec2 Video Decoder to the RK3588s devicetree.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>

Document the Rockchip RK3588 Video Decoder bindings.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>

This driver supports the second generation of the Rockchip Video
decoder, also known as vdpu34x.
It is currently only used on the RK3588(s) SoC.

There are 2 decoders on the RK3588 SoC that can work in pair to decode
8K video at 30 FPS but currently, only using one core at a time is
supported.

Scheduling requests between the two cores will be implemented later.

The core supports H264, HEVC, VP9 and AVS2 decoding but this driver
currently only supports H264.

The driver is based on rkvdec and they may share some code in the
future.
The decision to make a different driver is mainly because rkvdec2 has
more features and can work with multiple cores.

The registers are mapped in a struct in RAM using bitfields. It is IO
copied to the HW when all values are configured.
The decision to use such a struct instead of writing buffers one by one
is based on the following reasons:
 - Rockchip cores are known to misbehave when registers are not written
   in address order,
 - Those cores also need the software to write all registers, even if
   they are written their default values or are not related to the task
   (this core will not start decoding some H264 frames if some VP9
   registers are not written to 0)
 - In the future, to support multiple cores, the scheduler could be
   optimized by storing the precomputed registers values and copy them
   to the HW as soos as a core becomes available.

This makes the code more readable and may bring performance improvements
in future features.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>

The table will be shared with the rkvdec2 driver in following commits.

As HW formatted CABAC tables can be shared between drivers, it makes sense
to group them in an include folder.

Each driver can include the tables they need so that all tables are not
built in the kernel, but rather in each driver, if the driver is enabled.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>

This flag is needed for drivers that have a minimum height lower
than 32 pixels.

This is because when the flag is not set, the height is halved, which
would make it lower than 16 pixels if min height is 16.

Setting this flag will keep the height at its value and have a valid
SPS.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>

Jonas Karlman authored 9 months ago and Detlev Casanova committed 3 weeks ago

Add NV15 and NV20 pixel formats used by the Rockchip Video Decoder for
10-bit buffers.

NV15 and NV20 is 10-bit 4:2:0/4:2:2 semi-planar YUV formats similar to
NV12 and NV16, using 10-bit components with no padding between each
component. Instead, a group of 4 luminance/chrominance samples are
stored over 5 bytes in little endian order:

YYYY = UVUV = 4 * 10 bits = 40 bits = 5 bytes

The '15' and '20' suffix refers to the optimum effective bits per pixel
which is achieved when the total number of luminance samples is a
multiple of 8 for NV15 and 4 for NV20.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Tested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Tested-by: Christopher Obbard <chris.obbard@collabora.com>

Pull arm64 updates from Catalin Marinas:
 "Nothing major this time around.

  Apart from the usual perf/PMU updates, some page table cleanups, the
  notable features are average CPU frequency based on the AMUv1
  counters, CONFIG_HOTPLUG_SMT and MOPS instructions (memcpy/memset) in
  the uaccess routines.

  Perf and PMUs:

   - Support for the 'Rainier' CPU PMU from Arm

   - Preparatory driver changes and cleanups that pave the way for BRBE
     support

   - Support for partial virtualisation of the Apple-M1 PMU

   - Support for the second event filter in Arm CSPMU designs

   - Minor fixes and cleanups (CMN and DWC PMUs)

   - Enable EL2 requirements for FEAT_PMUv3p9

  Power, CPU topology:

   - Support for AMUv1-based average CPU frequency

   - Run-time SMT control wired up for arm64 (CONFIG_HOTPLUG_SMT). It
     adds a generic topology_is_primary_thread() function overridden by
     x86 and powerpc

  New(ish) features:

   - MOPS (memcpy/memset) support for the uaccess routines

  Security/confidential compute:

   - Fix the DMA address for devices used in Realms with Arm CCA. The
     CCA architecture uses the address bit to differentiate between
     shared and private addresses

   - Spectre-BHB: assume CPUs Linux doesn't know about vulnerable by
     default

  Memory management clean-ups:

   - Drop the P*D_TABLE_BIT definition in preparation for 128-bit PTEs

   - Some minor page table accessor clean-ups

   - PIE/POE (permission indirection/overlay) helpers clean-up

  Kselftests:

   - MTE: skip hugetlb tests if MTE is not supported on such mappings
     and user correct naming for sync/async tag checking modes

  Miscellaneous:

   - Add a PKEY_UNRESTRICTED definition as 0 to uapi (toolchain people
     request)

   - Sysreg updates for new register fields

   - CPU type info for some Qualcomm Kryo cores"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (72 commits)
  arm64: mm: Don't use %pK through printk
  perf/arm_cspmu: Fix missing io.h include
  arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists
  arm64: cputype: Add MIDR_CORTEX_A76AE
  arm64: errata: Add KRYO 2XX/3XX/4XX silver cores to Spectre BHB safe list
  arm64: errata: Assume that unknown CPUs _are_ vulnerable to Spectre BHB
  arm64: errata: Add QCOM_KRYO_4XX_GOLD to the spectre_bhb_k24_list
  arm64/sysreg: Enforce whole word match for open/close tokens
  arm64/sysreg: Fix unbalanced closing block
  arm64: Kconfig: Enable HOTPLUG_SMT
  arm64: topology: Support SMT control on ACPI based system
  arch_topology: Support SMT control for OF based system
  cpu/SMT: Provide a default topology_is_primary_thread()
  arm64/mm: Define PTDESC_ORDER
  perf/arm_cspmu: Add PMEVFILT2R support
  perf/arm_cspmu: Generalise event filtering
  perf/arm_cspmu: Move register definitons to header
  arm64/kernel: Always use level 2 or higher for early mappings
  arm64/mm: Drop PXD_TABLE_BIT
  arm64/mm: Check pmd_table() in pmd_trans_huge()
  ...

* for-next/el2-enable-feat-pmuv3p9:
  : Enable EL2 requirements for FEAT_PMUv3p9
  arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9

* for-next/smt-control:
  : Support SMT control on arm64
  arm64: Kconfig: Enable HOTPLUG_SMT
  arm64: topology: Support SMT control on ACPI based system
  arch_topology: Support SMT control for OF based system
  cpu/SMT: Provide a default topology_is_primary_thread()

Merge branches 'for-next/amuv1-avg-freq', 'for-next/pkey_unrestricted', 'for-next/sysreg', 'for-next/misc', 'for-next/pgtable-cleanups', 'for-next/kselftest', 'for-next/uaccess-mops', 'for-next/pie-poe-cleanup', 'for-next/cputype-kryo', 'for-next/cca-dma-address', 'for-next/drop-pxd_table_bit' and 'for-next/spectre-bhb-assume-vulnerable', remote-tracking branch 'arm64/for-next/perf' into for-next/core

* arm64/for-next/perf:
  perf/arm_cspmu: Fix missing io.h include
  perf/arm_cspmu: Add PMEVFILT2R support
  perf/arm_cspmu: Generalise event filtering
  perf/arm_cspmu: Move register definitons to header
  drivers/perf: apple_m1: Support host/guest event filtering
  drivers/perf: apple_m1: Refactor event select/filter configuration
  perf/dwc_pcie: fix duplicate pci_dev devices
  perf/dwc_pcie: fix some unreleased resources
  perf/arm-cmn: Minor event type housekeeping
  perf: arm_pmu: Move PMUv3-specific data
  perf: apple_m1: Don't disable counter in m1_pmu_enable_event()
  perf: arm_v7_pmu: Don't disable counter in (armv7|krait_|scorpion_)pmu_enable_event()
  perf: arm_v7_pmu: Drop obvious comments for enabling/disabling counters and interrupts
  perf: arm_pmuv3: Don't disable counter in armv8pmu_enable_event()
  perf: arm_pmu: Don't disable counter in armpmu_add()
  perf: arm_pmuv3: Call kvm_vcpu_pmu_resync_el0() before enabling counters
  perf: arm_pmuv3: Add support for ARM Rainier PMU

* for-next/amuv1-avg-freq:
  : Add support for AArch64 AMUv1-based average freq
  arm64: Utilize for_each_cpu_wrap for reference lookup
  arm64: Update AMU-based freq scale factor on entering idle
  arm64: Provide an AMU-based version of arch_freq_get_on_cpu
  cpufreq: Introduce an optional cpuinfo_avg_freq sysfs entry
  cpufreq: Allow arch_freq_get_on_cpu to return an error
  arch_topology: init capacity_freq_ref to 0

* for-next/pkey_unrestricted:
  : mm/pkey: Add PKEY_UNRESTRICTED macro
  selftest/powerpc/mm/pkey: fix build-break introduced by commit 00894c3f
  selftests/powerpc: Use PKEY_UNRESTRICTED macro
  selftests/mm: Use PKEY_UNRESTRICTED macro
  mm/pkey: Add PKEY_UNRESTRICTED macro

* for-next/sysreg:
  : arm64 sysreg updates
  arm64/sysreg: Enforce whole word match for open/close tokens
  arm64/sysreg: Fix unbalanced closing block
  arm64/sysreg: Add register fields for HFGWTR2_EL2
  arm64/sysreg: Add register fields for HFGRTR2_EL2
  arm64/sysreg: Add register fields for HFGITR2_EL2
  arm64/sysreg: Add register fields for HDFGWTR2_EL2
  arm64/sysreg: Add register fields for HDFGRTR2_EL2
  arm64/sysreg: Update register fields for ID_AA64MMFR0_EL1

* for-next/misc:
  : Miscellaneous arm64 patches
  arm64: mm: Don't use %pK through printk
  arm64/fpsimd: Remove unused declaration fpsimd_kvm_prepare()

* for-next/pgtable-cleanups:
  : arm64 pgtable accessors cleanup
  arm64/mm: Define PTDESC_ORDER
  arm64/kernel: Always use level 2 or higher for early mappings
  arm64/hugetlb: Consistently use pud_sect_supported()
  arm64/mm: Convert __pte_to_phys() and __phys_to_pte_val() as functions

* for-next/kselftest:
  : arm64 kselftest updates
  kselftest/arm64: mte: Skip the hugetlb tests if MTE not supported on such mappings
  kselftest/arm64: mte: Use the correct naming for tag check modes in check_hugetlb_options.c

* for-next/uaccess-mops:
  : Implement the uaccess memory copy/set using MOPS instructions
  arm64: lib: Use MOPS for usercopy routines
  arm64: mm: Handle PAN faults on uaccess CPY* instructions
  arm64: extable: Add fixup handling for uaccess CPY* instructions

* for-next/pie-poe-cleanup:
  : PIE/POE helpers cleanup
  arm64/sysreg: Move POR_EL0_INIT to asm/por.h
  arm64/sysreg: Rename POE_RXW to POE_RWX
  arm64/sysreg: Improve PIR/POR helpers

* for-next/cputype-kryo:
  : Add cputype info for some Qualcomm Kryo cores
  arm64: cputype: Add comments about Qualcomm Kryo 5XX and 6XX cores
  arm64: cputype: Add QCOM_CPU_PART_KRYO_3XX_GOLD

* for-next/cca-dma-address:
  : Fix DMA address for devices used in realms with Arm CCA
  arm64: realm: Use aliased addresses for device DMA to shared buffers
  dma: Introduce generic dma_addr_*crypted helpers
  dma: Fix encryption bit clearing for dma_to_phys

* for-next/drop-pxd_table_bit:
  : Drop the arm64 PXD_TABLE_BIT (clean-up in preparation for 128-bit PTEs)
  arm64/mm: Drop PXD_TABLE_BIT
  arm64/mm: Check pmd_table() in pmd_trans_huge()
  arm64/mm: Check PUD_TYPE_TABLE in pud_bad()
  arm64/mm: Check PXD_TYPE_TABLE in [p4d|pgd]_bad()
  arm64/mm: Clear PXX_TYPE_MASK and set PXD_TYPE_SECT in [pmd|pud]_mkhuge()
  arm64/mm: Clear PXX_TYPE_MASK in mk_[pmd|pud]_sect_prot()
  arm64/ptdump: Test PMD_TYPE_MASK for block mapping
  KVM: arm64: ptdump: Test PMD_TYPE_MASK for block mapping

* for-next/spectre-bhb-assume-vulnerable:
  : Rework Spectre BHB mitigations to not assume "safe"
  arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists
  arm64: cputype: Add MIDR_CORTEX_A76AE
  arm64: errata: Add KRYO 2XX/3XX/4XX silver cores to Spectre BHB safe list
  arm64: errata: Assume that unknown CPUs _are_ vulnerable to Spectre BHB
  arm64: errata: Add QCOM_KRYO_4XX_GOLD to the spectre_bhb_k24_list

Pull VDSO infrastructure updates from Thomas Gleixner:

 - Consolidate the VDSO storage

   The VDSO data storage and data layout has been largely architecture
   specific for historical reasons. That increases the maintenance
   effort and causes inconsistencies over and over.

   There is no real technical reason for architecture specific layouts
   and implementations. The architecture specific details can easily be
   integrated into a generic layout, which also reduces the amount of
   duplicated code for managing the mappings.

   Convert all architectures over to a unified layout and common mapping
   infrastructure. This splits the VDSO data layout into subsystem
   specific blocks, timekeeping, random and architecture parts, which
   provides a better structure and allows to improve and update the
   functionalities without conflict and interaction.

 - Rework the timekeeping data storage

   The current implementation is designed for exposing system
   timekeeping accessors, which was good enough at the time when it was
   designed.

   PTP and Time Sensitive Networking (TSN) change that as there are
   requirements to expose independent PTP clocks, which are not related
   to system timekeeping.

   Replace the monolithic data storage by a structured layout, which
   allows to add support for independent PTP clocks on top while reusing
   both the data structures and the time accessor implementations.

* tag 'timers-vdso-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (55 commits)
  sparc/vdso: Always reject undefined references during linking
  x86/vdso: Always reject undefined references during linking
  vdso: Rework struct vdso_time_data and introduce struct vdso_clock
  vdso: Move architecture related data before basetime data
  powerpc/vdso: Prepare introduction of struct vdso_clock
  arm64/vdso: Prepare introduction of struct vdso_clock
  x86/vdso: Prepare introduction of struct vdso_clock
  time/namespace: Prepare introduction of struct vdso_clock
  vdso/namespace: Rename timens_setup_vdso_data() to reflect new vdso_clock struct
  vdso/vsyscall: Prepare introduction of struct vdso_clock
  vdso/gettimeofday: Prepare helper functions for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare do_coarse_timens() for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare do_coarse() for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare do_hres_timens() for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare do_hres() for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare introduction of struct vdso_clock
  vdso/helpers: Prepare introduction of struct vdso_clock
  vdso/datapage: Define vdso_clock to prepare for multiple PTP clocks
  vdso: Make vdso_time_data cacheline aligned
  arm64: Make asm/cache.h compatible with vDSO
  ...

Pull timer cleanups from Thomas Gleixner:
 "A treewide hrtimer timer cleanup

  hrtimers are initialized with hrtimer_init() and a subsequent store to
  the callback pointer. This turned out to be suboptimal for the
  upcoming Rust integration and is obviously a silly implementation to
  begin with.

  This cleanup replaces the hrtimer_init(T); T->function = cb; sequence
  with hrtimer_setup(T, cb);

  The conversion was done with Coccinelle and a few manual fixups.

  Once the conversion has completely landed in mainline, hrtimer_init()
  will be removed and the hrtimer::function becomes a private member"

* tag 'timers-cleanups-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (100 commits)
  wifi: rt2x00: Switch to use hrtimer_update_function()
  io_uring: Use helper function hrtimer_update_function()
  serial: xilinx_uartps: Use helper function hrtimer_update_function()
  ASoC: fsl: imx-pcm-fiq: Switch to use hrtimer_setup()
  RDMA: Switch to use hrtimer_setup()
  virtio: mem: Switch to use hrtimer_setup()
  drm/vmwgfx: Switch to use hrtimer_setup()
  drm/xe/oa: Switch to use hrtimer_setup()
  drm/vkms: Switch to use hrtimer_setup()
  drm/msm: Switch to use hrtimer_setup()
  drm/i915/request: Switch to use hrtimer_setup()
  drm/i915/uncore: Switch to use hrtimer_setup()
  drm/i915/pmu: Switch to use hrtimer_setup()
  drm/i915/perf: Switch to use hrtimer_setup()
  drm/i915/gvt: Switch to use hrtimer_setup()
  drm/i915/huc: Switch to use hrtimer_setup()
  drm/amdgpu: Switch to use hrtimer_setup()
  stm class: heartbeat: Switch to use hrtimer_setup()
  i2c: Switch to use hrtimer_setup()
  iio: Switch to use hrtimer_setup()
  ...

Pull timer core updates from Thomas Gleixner:

 - Fix a memory ordering issue in posix-timers

   Posix-timer lookup is lockless and reevaluates the timer validity
   under the timer lock, but the update which validates the timer is not
   protected by the timer lock. That allows the store to be reordered
   against the initialization stores, so that the lookup side can
   observe a partially initialized timer. That's mostly a theoretical
   problem, but incorrect nevertheless.

 - Fix a long standing inconsistency of the coarse time getters

   The coarse time getters read the base time of the current update
   cycle without reading the actual hardware clock. NTP frequency
   adjustment can set the base time backwards. The fine grained
   interfaces compensate this by reading the clock and applying the new
   conversion factor, but the coarse grained time getters use the base
   time directly. That allows the user to observe time going backwards.

   Cure it by always forwarding base time, when NTP changes the
   frequency with an immediate step.

 - Rework of posix-timer hashing

   The posix-timer hash is not scalable and due to the CRIU timer
   restore mechanism prone to massive contention on the global hash
   bucket lock.

   Replace the global hash lock with a fine grained per bucket locking
   scheme to address that.

 - Rework the proc/$PID/timers interface.

   /proc/$PID/timers is provided for CRIU to be able to restore a timer.
   The printout happens with sighand lock held and interrupts disabled.
   That's not required as this can be done with RCU protection as well.

 - Provide a sane mechanism for CRIU to restore a timer ID

   CRIU restores timers by creating and deleting them until the kernel
   internal per process ID counter reached the requested ID. That's
   horribly slow for sparse timer IDs.

   Provide a prctl() which allows CRIU to restore a timer with a given
   ID. When enabled the ID pointer is used as input pointer to read the
   requested ID from user space. When disabled, the normal allocation
   scheme (next ID) is active as before. This is backwards compatible
   for both kernel and user space.

 - Make hrtimer_update_function() less expensive.

   The sanity checks are valuable, but expensive for high frequency
   usage in io/uring. Make the debug checks conditional and enable them
   only when lockdep is enabled.

 - Small updates, cleanups and improvements

* tag 'timers-core-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
  selftests/timers: Improve skew_consistency by testing with other clockids
  timekeeping: Fix possible inconsistencies in _COARSE clockids
  posix-timers: Drop redundant memset() invocation
  selftests/timers/posix-timers: Add a test for exact allocation mode
  posix-timers: Provide a mechanism to allocate a given timer ID
  posix-timers: Dont iterate /proc/$PID/timers with sighand:: Siglock held
  posix-timers: Make per process list RCU safe
  posix-timers: Avoid false cacheline sharing
  posix-timers: Switch to jhash32()
  posix-timers: Improve hash table performance
  posix-timers: Make signal_struct:: Next_posix_timer_id an atomic_t
  posix-timers: Make lock_timer() use guard()
  posix-timers: Rework timer removal
  posix-timers: Simplify lock/unlock_timer()
  posix-timers: Use guards in a few places
  posix-timers: Remove SLAB_PANIC from kmem cache
  posix-timers: Remove a few paranoid warnings
  posix-timers: Cleanup includes
  posix-timers: Add cond_resched() to posix_timer_add() search loop
  posix-timers: Initialise timer before adding it to the hash table
  ...

Pull futex update from Thomas Gleixner:
 "A single update for futexes:

  Use a precomputed mask for the hash computation instead of computing
  the mask from the size on every invocation"

* tag 'locking-futex-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Use a hashmask instead of hashsize

Pull irq driver updates from Thomas Gleixner:

 - Support for hard indices on RISC-V. The hart index identifies a hart
   (core) within a specific interrupt domain in RISC-V's Priviledged
   Architecture.

 - Rework of the RISC-V MSI driver

   This moves the driver over to the generic MSI library and solves the
   affinity problem of unmaskable PCI/MSI controllers. Unmaskable
   PCI/MSI controllers are prone to lose interrupts when the MSI message
   is updated to change the affinity because the message write consists
   of three 32-bit subsequent writes, which update address and data. As
   these writes are non-atomic versus the device raising an interrupt,
   the device can observe a half written update and issue an interrupt
   on the wrong vector. This is mitiated by a carefully orchestrated
   step by step update and the observation of an eventually pending
   interrupt on the CPU which issues the update. The algorithm follows
   the well established method of the X86 MSI driver.

 - A new driver for the RISC-V Sophgo SG2042 MSI controller

 - Overhaul of the Renesas RZQ2L driver

   Simplification of the probe function by using devm_*() mechanisms,
   which avoid the endless list of error prone gotos in the failure
   paths.

 - Expand the Renesas RZV2H driver to support RZ/G3E SoCs

 - A workaround for Rockchip 3568002 erratum in the GIC-V3 driver to
   ensure that the addressing is limited to the lower 32-bit of the
   physical address space.

 - Add support for the Allwinner AS23 NMI controller

 - Expand the IMX irqsteer driver to handle up to 960 input interrupts

 - The usual small updates, cleanups and device tree changes

* tag 'irq-drivers-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  irqchip/imx-irqsteer: Support up to 960 input interrupts
  irqchip/sunxi-nmi: Support Allwinner A523 NMI controller
  dt-bindings: irq: sun7i-nmi: Document the Allwinner A523 NMI controller
  irqchip/davinci-cp-intc: Remove public header
  irqchip/renesas-rzv2h: Add RZ/G3E support
  irqchip/renesas-rzv2h: Update macros ICU_TSSR_TSSEL_{MASK,PREP}
  irqchip/renesas-rzv2h: Update TSSR_TIEN macro
  irqchip/renesas-rzv2h: Add field_width to struct rzv2h_hw_info
  irqchip/renesas-rzv2h: Add max_tssel to struct rzv2h_hw_info
  irqchip/renesas-rzv2h: Add struct rzv2h_hw_info with t_offs variable
  irqchip/renesas-rzv2h: Use devm_pm_runtime_enable()
  irqchip/renesas-rzv2h: Use devm_reset_control_get_exclusive_deasserted()
  irqchip/renesas-rzv2h: Simplify rzv2h_icu_init()
  irqchip/renesas-rzv2h: Drop irqchip from struct rzv2h_icu_priv
  irqchip/renesas-rzv2h: Fix wrong variable usage in rzv2h_tint_set_type()
  dt-bindings: interrupt-controller: renesas,rzv2h-icu: Document RZ/G3E SoC
  riscv: sophgo: dts: Add msi controller for SG2042
  irqchip: Add the Sophgo SG2042 MSI interrupt controller
  dt-bindings: interrupt-controller: Add Sophgo SG2042 MSI
  arm64: dts: rockchip: rk356x: Move PCIe MSI to use GIC ITS instead of MBI
  ...

Pull MSI irq updates from Thomas Gleixner:

 - Switch the MSI descriptor locking to guards

 - Replace the broken PCI/TPH implementation, which lacks any form of
   serialization against concurrent modifications with a properly
   serialized mechanism in the PCI/MSI core code

 - Replace the MSI descriptor abuse in the SCSI/UFS Qualcom driver with
   dedicated driver internal storage

* tag 'irq-msi-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/msi: Rename msi_[un]lock_descs()
  scsi: ufs: qcom: Remove the MSI descriptor abuse
  PCI/TPH: Replace the broken MSI-X control word update
  PCI/MSI: Provide a sane mechanism for TPH
  PCI: hv: Switch MSI descriptor locking to guard()
  PCI/MSI: Switch to MSI descriptor locking to guard()
  NTB/msi: Switch MSI descriptor locking to lock guard()
  soc: ti: ti_sci_inta_msi: Switch MSI descriptor locking to guard()
  genirq/msi: Use lock guards for MSI descriptor locking
  cleanup: Provide retain_ptr()
  genirq/msi: Make a few functions static

Pull irq updates from Thomas Gleixner:
 "A small set of core changes for the interrupt subsystem:

   - Expose the MSI message in the existing debug filesystem dump.
     That's useful for validation and debugging.

   - Small cleanups"

* tag 'irq-core-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Make a few functions static
  irqdomain: Remove extern from function declarations
  genirq/msi: Expose MSI message data in debugfs

We've had this before: when we remove infrastructure to generate files,
the old stale build artifacts still remain in-tree.  And when the
infrastructure to generate them is gone, so is the gitignore file for
those build artifacts.

End result: git will see the old generated files, and people will
mistakenly commit them.  That's what happened with the 'genheaders' file
not that long ago (see commit 04a3389b "Remove stale generated
'genheaders' file").

This time it's commit 9c54baab ("x86/boot: Drop CRC-32 checksum and
the build tool that generates it") that removed the 'build' file from
the arch/x86/boot/tools/ subdirectory, and removed the .gitignore file
too (because the whole subdirectory is gone).

And as a result, if you don't do a 'git clean -dqfx' or similar to clean
up your tree, 'git status' will say

  Untracked files:
    (use "git add <file>..." to include in what will be committed)
	arch/x86/boot/tools/

and some hapless sleep-deprived developer will inevitably decide that
that means that they need to 'git add' that directory.  Which would
bring back some stale generated file that we most definitely do not want
in the tree.

So when removing directories that had special .gitignore patterns, make
sure to add a new gitignore entry in the parent directory for the no
longer existing subdirectory.

It will avoid mistakes.

Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Fixes: 9c54baab ("x86/boot: Drop CRC-32 checksum and the build tool that generates it")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull x86 platform updates from Ingo Molnar:
 "Two small cleanups in the x86 platform support code"

* tag 'x86-platform-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform/olpc: Remove unused variable 'len' in olpc_dt_compatible_match()
  x86/platform/olpc-xo1-sci: Don't include <linux/pm_wakeup.h> directly

Pull x86 SEV updates from Ingo Molnar:

 - Improve sme_enable() PIC build robustness (Kevin Loughlin)

 - Simplify vc_handle_msr() a bit (Peng Hao)

[ Just reminding myself and everybody else about the endless stream of
  x86 TLAs: "SEV" is AMD's Secure Encrypted Virtualization  - Linus ]

* tag 'x86-sev-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sev: Simplify the code by removing unnecessary 'else' statement
  x86/sev: Add missing RIP_REL_REF() invocations during sme_enable()

Pull x86 cleanups from Ingo Molnar:
 "Miscellaneous x86 cleanups by Arnd Bergmann, Charles Han, Mirsad
  Todorovac, Randy Dunlap, Thorsten Blum and Zhang Kunbo"

* tag 'x86-cleanups-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/coco: Replace 'static const cc_mask' with the newly introduced cc_get_mask() function
  x86/delay: Fix inconsistent whitespace
  selftests/x86/syscall: Fix coccinelle WARNING recommending the use of ARRAY_SIZE()
  x86/platform: Fix missing declaration of 'x86_apple_machine'
  x86/irq: Fix missing declaration of 'io_apic_irqs'
  x86/usercopy: Fix kernel-doc func param name in clean_cache_range()'s description
  x86/apic: Use str_disabled_enabled() helper in print_ipi_mode()

Pull x86/fpu updates from Ingo Molnar:

 - Improve crypto performance by making kernel-mode FPU reliably usable
   in softirqs ((Eric Biggers)

 - Fully optimize out WARN_ON_FPU() (Eric Biggers)

 - Initial steps to support Support Intel APX (Advanced Performance
   Extensions) (Chang S. Bae)

 - Fix KASAN for arch_dup_task_struct() (Benjamin Berg)

 - Refine and simplify the FPU magic number check during signal return
   (Chang S. Bae)

 - Fix inconsistencies in guest FPU xfeatures (Chao Gao, Stanislav
   Spassov)

 - selftests/x86/xstate: Introduce common code for testing extended
   states (Chang S. Bae)

 - Misc fixes and cleanups (Borislav Petkov, Colin Ian King, Uros
   Bizjak)

* tag 'x86-fpu-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu/xstate: Fix inconsistencies in guest FPU xfeatures
  x86/fpu: Clarify the "xa" symbolic name used in the XSTATE* macros
  x86/fpu: Use XSAVE{,OPT,C,S} and XRSTOR{,S} mnemonics in xstate.h
  x86/fpu: Improve crypto performance by making kernel-mode FPU reliably usable in softirqs
  x86/fpu/xstate: Simplify print_xstate_features()
  x86/fpu: Refine and simplify the magic number check during signal return
  selftests/x86/xstate: Fix spelling mistake "hader" -> "header"
  x86/fpu: Avoid copying dynamic FP state from init_task in arch_dup_task_struct()
  vmlinux.lds.h: Remove entry to place init_task onto init_stack
  selftests/x86/avx: Add AVX tests
  selftests/x86/xstate: Clarify supported xstates
  selftests/x86/xstate: Consolidate test invocations into a single entry
  selftests/x86/xstate: Introduce signal ABI test
  selftests/x86/xstate: Refactor ptrace ABI test
  selftests/x86/xstate: Refactor context switching test
  selftests/x86/xstate: Enumerate and name xstate components
  selftests/x86/xstate: Refactor XSAVE helpers for general use
  selftests/x86: Consolidate redundant signal helper functions
  x86/fpu: Fix guest FPU state buffer allocation size
  x86/fpu: Fully optimize out WARN_ON_FPU()

Pull x86 boot code updates from Ingo Molnar:

 - Memblock setup and other early boot code cleanups (Mike Rapoport)

 - Export e820_table_kexec[] to sysfs (Dave Young)

 - Baby steps of adding relocate_kernel() debugging support (David
   Woodhouse)

 - Replace open-coded parity calculation with parity8() (Kuan-Wei Chiu)

 - Move the LA57 trampoline to separate source file (Ard Biesheuvel)

 - Misc micro-optimizations (Uros Bizjak)

 - Drop obsolete E820_TYPE_RESERVED_KERN and related code (Mike
   Rapoport)

* tag 'x86-boot-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/kexec: Add relocate_kernel() debugging support: Load a GDT
  x86/boot: Move the LA57 trampoline to separate source file
  x86/boot: Do not test if AC and ID eflags are changeable on x86_64
  x86/bootflag: Replace open-coded parity calculation with parity8()
  x86/bootflag: Micro-optimize sbf_write()
  x86/boot: Add missing has_cpuflag() prototype
  x86/kexec: Export e820_table_kexec[] to sysfs
  x86/boot: Change some static bootflag functions to bool
  x86/e820: Drop obsolete E820_TYPE_RESERVED_KERN and related code
  x86/boot: Split parsing of boot_params into the parse_boot_params() helper function
  x86/boot: Split kernel resources setup into the setup_kernel_resources() helper function
  x86/boot: Move setting of memblock parameters to e820__memblock_setup()

Pull x86 build updates from Ingo Molnar:

 - Drop CRC-32 checksum and the build tool that generates it (Ard
   Biesheuvel)

 - Fix broken copy command in genimage.sh when making isoimage (Nir
   Lichtman)

* tag 'x86-build-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot: Add back some padding for the CRC-32 checksum
  x86/boot: Drop CRC-32 checksum and the build tool that generates it
  x86/build: Fix broken copy command in genimage.sh when making isoimage

Pull core x86 updates from Ingo Molnar:
 "x86 CPU features support:
   - Generate the <asm/cpufeaturemasks.h> header based on build config
     (H. Peter Anvin, Xin Li)
   - x86 CPUID parsing updates and fixes (Ahmed S. Darwish)
   - Introduce the 'setcpuid=' boot parameter (Brendan Jackman)
   - Enable modifying CPU bug flags with '{clear,set}puid=' (Brendan
     Jackman)
   - Utilize CPU-type for CPU matching (Pawan Gupta)
   - Warn about unmet CPU feature dependencies (Sohil Mehta)
   - Prepare for new Intel Family numbers (Sohil Mehta)

  Percpu code:
   - Standardize & reorganize the x86 percpu layout and related cleanups
     (Brian Gerst)
   - Convert the stackprotector canary to a regular percpu variable
     (Brian Gerst)
   - Add a percpu subsection for cache hot data (Brian Gerst)
   - Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N() (Uros Bizjak)
   - Construct __percpu_seg_override from __percpu_seg (Uros Bizjak)

  MM:
   - Add support for broadcast TLB invalidation using AMD's INVLPGB
     instruction (Rik van Riel)
   - Rework ROX cache to avoid writable copy (Mike Rapoport)
   - PAT: restore large ROX pages after fragmentation (Kirill A.
     Shutemov, Mike Rapoport)
   - Make memremap(MEMREMAP_WB) map memory as encrypted by default
     (Kirill A. Shutemov)
   - Robustify page table initialization (Kirill A. Shutemov)
   - Fix flush_tlb_range() when used for zapping normal PMDs (Jann Horn)
   - Clear _PAGE_DIRTY for kernel mappings when we clear _PAGE_RW
     (Matthew Wilcox)

  KASLR:
   - x86/kaslr: Reduce KASLR entropy on most x86 systems, to support PCI
     BAR space beyond the 10TiB region (CONFIG_PCI_P2PDMA=y) (Balbir
     Singh)

  CPU bugs:
   - Implement FineIBT-BHI mitigation (Peter Zijlstra)
   - speculation: Simplify and make CALL_NOSPEC consistent (Pawan Gupta)
   - speculation: Add a conditional CS prefix to CALL_NOSPEC (Pawan
     Gupta)
   - RFDS: Exclude P-only parts from the RFDS affected list (Pawan
     Gupta)

  System calls:
   - Break up entry/common.c (Brian Gerst)
   - Move sysctls into arch/x86 (Joel Granados)

  Intel LAM support updates: (Maciej Wieczor-Retman)
   - selftests/lam: Move cpu_has_la57() to use cpuinfo flag
   - selftests/lam: Skip test if LAM is disabled
   - selftests/lam: Test get_user() LAM pointer handling

  AMD SMN access updates:
   - Add SMN offsets to exclusive region access (Mario Limonciello)
   - Add support for debugfs access to SMN registers (Mario Limonciello)
   - Have HSMP use SMN through AMD_NODE (Yazen Ghannam)

  Power management updates: (Patryk Wlazlyn)
   - Allow calling mwait_play_dead with an arbitrary hint
   - ACPI/processor_idle: Add FFH state handling
   - intel_idle: Provide the default enter_dead() handler
   - Eliminate mwait_play_dead_cpuid_hint()

  Build system:
   - Raise the minimum GCC version to 8.1 (Brian Gerst)
   - Raise the minimum LLVM version to 15.0.0 (Nathan Chancellor)

  Kconfig: (Arnd Bergmann)
   - Add cmpxchg8b support back to Geode CPUs
   - Drop 32-bit "bigsmp" machine support
   - Rework CONFIG_GENERIC_CPU compiler flags
   - Drop configuration options for early 64-bit CPUs
   - Remove CONFIG_HIGHMEM64G support
   - Drop CONFIG_SWIOTLB for PAE
   - Drop support for CONFIG_HIGHPTE
   - Document CONFIG_X86_INTEL_MID as 64-bit-only
   - Remove old STA2x11 support
   - Only allow CONFIG_EISA for 32-bit

  Headers:
   - Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI and non-UAPI
     headers (Thomas Huth)

  Assembly code & machine code patching:
   - x86/alternatives: Simplify alternative_call() interface (Josh
     Poimboeuf)
   - x86/alternatives: Simplify callthunk patching (Peter Zijlstra)
   - KVM: VMX: Use named operands in inline asm (Josh Poimboeuf)
   - x86/hyperv: Use named operands in inline asm (Josh Poimboeuf)
   - x86/traps: Cleanup and robustify decode_bug() (Peter Zijlstra)
   - x86/kexec: Merge x86_32 and x86_64 code using macros from
     <asm/asm.h> (Uros Bizjak)
   - Use named operands in inline asm (Uros Bizjak)
   - Improve performance by using asm_inline() for atomic locking
     instructions (Uros Bizjak)

  Earlyprintk:
   - Harden early_serial (Peter Zijlstra)

  NMI handler:
   - Add an emergency handler in nmi_desc & use it in
     nmi_shootdown_cpus() (Waiman Long)

  Miscellaneous fixes and cleanups:
   - by Ahmed S. Darwish, Andy Shevchenko, Ard Biesheuvel, Artem
     Bityutskiy, Borislav Petkov, Brendan Jackman, Brian Gerst, Dan
     Carpenter, Dr. David Alan Gilbert, H. Peter Anvin, Ingo Molnar,
     Josh Poimboeuf, Kevin Brodsky, Mike Rapoport, Lukas Bulwahn, Maciej
     Wieczor-Retman, Max Grobecker, Patryk Wlazlyn, Pawan Gupta, Peter
     Zijlstra, Philip Redkin, Qasim Ijaz, Rik van Riel, Thomas Gleixner,
     Thorsten Blum, Tom Lendacky, Tony Luck, Uros Bizjak, Vitaly
     Kuznetsov, Xin Li, liuye"

* tag 'x86-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (211 commits)
  zstd: Increase DYNAMIC_BMI2 GCC version cutoff from 4.8 to 11.0 to work around compiler segfault
  x86/asm: Make asm export of __ref_stack_chk_guard unconditional
  x86/mm: Only do broadcast flush from reclaim if pages were unmapped
  perf/x86/intel, x86/cpu: Replace Pentium 4 model checks with VFM ones
  perf/x86/intel, x86/cpu: Simplify Intel PMU initialization
  x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-UAPI headers
  x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI headers
  x86/locking/atomic: Improve performance by using asm_inline() for atomic locking instructions
  x86/asm: Use asm_inline() instead of asm() in clwb()
  x86/asm: Use CLFLUSHOPT and CLWB mnemonics in <asm/special_insns.h>
  x86/hweight: Use asm_inline() instead of asm()
  x86/hweight: Use ASM_CALL_CONSTRAINT in inline asm()
  x86/hweight: Use named operands in inline asm()
  x86/stackprotector/64: Only export __ref_stack_chk_guard on CONFIG_SMP
  x86/head/64: Avoid Clang < 17 stack protector in startup code
  x86/kexec: Merge x86_32 and x86_64 code using macros from <asm/asm.h>
  x86/runtime-const: Add the RUNTIME_CONST_PTR assembly macro
  x86/cpu/intel: Limit the non-architectural constant_tsc model checks
  x86/mm/pat: Replace Intel x86_model checks with VFM ones
  x86/cpu/intel: Fix fast string initialization for extended Families
  ...

Pull performance events updates from Ingo Molnar:
 "Core:
   - Move perf_event sysctls into kernel/events/ (Joel Granados)
   - Use POLLHUP for pinned events in error (Namhyung Kim)
   - Avoid the read if the count is already updated (Peter Zijlstra)
   - Allow the EPOLLRDNORM flag for poll (Tao Chen)
   - locking/percpu-rwsem: Add guard support [ NOTE: this got
     (mis-)merged into the perf tree due to related work ] (Peter
     Zijlstra)

  perf_pmu_unregister() related improvements: (Peter Zijlstra)
   - Simplify the perf_event_alloc() error path
   - Simplify the perf_pmu_register() error path
   - Simplify perf_pmu_register()
   - Simplify perf_init_event()
   - Simplify perf_event_alloc()
   - Merge struct pmu::pmu_disable_count into struct
     perf_cpu_pmu_context::pmu_disable_count
   - Add this_cpc() helper
   - Introduce perf_free_addr_filters()
   - Robustify perf_event_free_bpf_prog()
   - Simplify the perf_mmap() control flow
   - Further simplify perf_mmap()
   - Remove retry loop from perf_mmap()
   - Lift event->mmap_mutex in perf_mmap()
   - Detach 'struct perf_cpu_pmu_context' and 'struct pmu' lifetimes
   - Fix perf_mmap() failure path

  Uprobes:
   - Harden x86 uretprobe syscall trampoline check (Jiri Olsa)
   - Remove redundant spinlock in uprobe_deny_signal() (Liao Chang)
   - Remove the spinlock within handle_singlestep() (Liao Chang)

  x86 Intel PMU enhancements:
   - Support PEBS counters snapshotting (Kan Liang)
   - Fix intel_pmu_read_event() (Kan Liang)
   - Extend per event callchain limit to branch stack (Kan Liang)
   - Fix system-wide LBR profiling (Kan Liang)
   - Allocate bts_ctx only if necessary (Li RongQing)
   - Apply static call for drain_pebs (Peter Zijlstra)

  x86 AMD PMU enhancements: (Ravi Bangoria)
   - Remove pointless sample period check
   - Fix ->config to sample period calculation for OP PMU
   - Fix perf_ibs_op.cnt_mask for CurCnt
   - Don't allow freq mode event creation through ->config interface
   - Add PMU specific minimum period
   - Add ->check_period() callback
   - Ceil sample_period to min_period
   - Add support for OP Load Latency Filtering
   - Update DTLB/PageSize decode logic

  Hardware breakpoints:
   - Return EOPNOTSUPP for unsupported breakpoint type (Saket Kumar
     Bhaskar)

  Hardlockup detector improvements: (Li Huafei)
   - perf_event memory leak
   - Warn if watchdog_ev is leaked

  Fixes and cleanups:
   - Misc fixes and cleanups (Andy Shevchenko, Kan Liang, Peter
     Zijlstra, Ravi Bangoria, Thorsten Blum, XieLudan)"

* tag 'perf-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (55 commits)
  perf: Fix __percpu annotation
  perf: Clean up pmu specific data
  perf/x86: Remove swap_task_ctx()
  perf/x86/lbr: Fix shorter LBRs call stacks for the system-wide mode
  perf: Supply task information to sched_task()
  perf: attach/detach PMU specific data
  locking/percpu-rwsem: Add guard support
  perf: Save PMU specific data in task_struct
  perf: Extend per event callchain limit to branch stack
  perf/ring_buffer: Allow the EPOLLRDNORM flag for poll
  perf/core: Use POLLHUP for pinned events in error
  perf/core: Use sysfs_emit() instead of scnprintf()
  perf/core: Remove optional 'size' arguments from strscpy() calls
  perf/x86/intel/bts: Check if bts_ctx is allocated when calling BTS functions
  uprobes/x86: Harden uretprobe syscall trampoline check
  watchdog/hardlockup/perf: Warn if watchdog_ev is leaked
  watchdog/hardlockup/perf: Fix perf_event memory leak
  perf/x86: Annotate struct bts_buffer::buf with __counted_by()
  perf/core: Clean up perf_try_init_event()
  perf/core: Fix perf_mmap() failure path
  ...

Pull scheduler updates from Ingo Molnar:
 "Core & fair scheduler changes:

   - Cancel the slice protection of the idle entity (Zihan Zhou)
   - Reduce the default slice to avoid tasks getting an extra tick
     (Zihan Zhou)
   - Force propagating min_slice of cfs_rq when {en,de}queue tasks
     (Tianchen Ding)
   - Refactor can_migrate_task() to elimate looping (I Hsin Cheng)
   - Add unlikey branch hints to several system calls (Colin Ian King)
   - Optimize current_clr_polling() on certain architectures (Yujun
     Dong)

  Deadline scheduler: (Juri Lelli)
   - Remove redundant dl_clear_root_domain call
   - Move dl_rebuild_rd_accounting to cpuset.h

  Uclamp:
   - Use the uclamp_is_used() helper instead of open-coding it (Xuewen
     Yan)
   - Optimize sched_uclamp_used static key enabling (Xuewen Yan)

  Scheduler topology support: (Juri Lelli)
   - Ignore special tasks when rebuilding domains
   - Add wrappers for sched_domains_mutex
   - Generalize unique visiting of root domains
   - Rebuild root domain accounting after every update
   - Remove partition_and_rebuild_sched_domains
   - Stop exposing partition_sched_domains_locked

  RSEQ: (Michael Jeanson)
   - Update kernel fields in lockstep with CONFIG_DEBUG_RSEQ=y
   - Fix segfault on registration when rseq_cs is non-zero
   - selftests: Add rseq syscall errors test
   - selftests: Ensure the rseq ABI TLS is actually 1024 bytes

  Membarriers:
   - Fix redundant load of membarrier_state (Nysal Jan K.A.)

  Scheduler debugging:
   - Introduce and use preempt_model_str() (Sebastian Andrzej Siewior)
   - Make CONFIG_SCHED_DEBUG unconditional (Ingo Molnar)

  Fixes and cleanups:
   - Always save/restore x86 TSC sched_clock() on suspend/resume
     (Guilherme G. Piccoli)
   - Misc fixes and cleanups (Thorsten Blum, Juri Lelli, Sebastian
     Andrzej Siewior)"

* tag 'sched-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  cpuidle, sched: Use smp_mb__after_atomic() in current_clr_polling()
  sched/debug: Remove CONFIG_SCHED_DEBUG
  sched/debug: Remove CONFIG_SCHED_DEBUG from self-test config files
  sched/debug, Documentation: Remove (most) CONFIG_SCHED_DEBUG references from documentation
  sched/debug: Make CONFIG_SCHED_DEBUG functionality unconditional
  sched/debug: Make 'const_debug' tunables unconditional __read_mostly
  sched/debug: Change SCHED_WARN_ON() to WARN_ON_ONCE()
  rseq/selftests: Fix namespace collision with rseq UAPI header
  include/{topology,cpuset}: Move dl_rebuild_rd_accounting to cpuset.h
  sched/topology: Stop exposing partition_sched_domains_locked
  cgroup/cpuset: Remove partition_and_rebuild_sched_domains
  sched/topology: Remove redundant dl_clear_root_domain call
  sched/deadline: Rebuild root domain accounting after every update
  sched/deadline: Generalize unique visiting of root domains
  sched/topology: Wrappers for sched_domains_mutex
  sched/deadline: Ignore special tasks when rebuilding domains
  tracing: Use preempt_model_str()
  xtensa: Rely on generic printing of preemption model
  x86: Rely on generic printing of preemption model
  s390: Rely on generic printing of preemption model
  ...

Pull objtool updates from Ingo Molnar:

 - The biggest change is the new option to automatically fail the build
   on objtool warnings: CONFIG_OBJTOOL_WERROR.

   While there are no currently known unfixed false positives left, such
   an expansion in the severity of objtool warnings inevitably creates a
   risk of build failures, so it's disabled by default and depends on
   !COMPILE_TEST, so it shouldn't be enabled on
   allyesconfig/allmodconfig builds and won't be forced on people who
   just accept build-time defaults in 'make oldconfig'.

   While the option is strongly recommended, only people who enable it
   explicitly should see it.

   (Josh Poimboeuf)

 - Disable branch profiling in noinstr code with a broad brush that
   includes all of arch/x86/ and kernel/sched/. (Josh Poimboeuf)

 - Create backup object files on objtool errors and print exact objtool
   arguments to make failure analysis easier (Josh Poimboeuf)

 - Improve noreturn handling (Josh Poimboeuf)

 - Improve rodata handling (Tiezhu Yang)

 - Support jump tables, switch tables and goto tables on LoongArch
   (Tiezhu Yang)

 - Misc cleanups and fixes (Josh Poimboeuf, David Engraf, Ingo Molnar)

* tag 'objtool-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
  tracing: Disable branch profiling in noinstr code
  objtool: Use O_CREAT with explicit mode mask
  objtool: Add CONFIG_OBJTOOL_WERROR
  objtool: Create backup on error and print args
  objtool: Change "warning:" to "error:" for --Werror
  objtool: Add --Werror option
  objtool: Add --output option
  objtool: Upgrade "Linked object detected" warning to error
  objtool: Consolidate option validation
  objtool: Remove --unret dependency on --rethunk
  objtool: Increase per-function WARN_FUNC() rate limit
  objtool: Update documentation
  objtool: Improve __noreturn annotation warning
  objtool: Fix error handling inconsistencies in check()
  x86/traps: Make exc_double_fault() consistently noreturn
  LoongArch: Enable jump table for objtool
  objtool/LoongArch: Add support for goto table
  objtool/LoongArch: Add support for switch table
  objtool: Handle PC relative relocation type
  objtool: Handle different entry size of rodata
  ...

Pull locking updates from Ingo Molnar:
 "Locking primitives:
   - Micro-optimize percpu_{,try_}cmpxchg{64,128}_op() and
     {,try_}cmpxchg{64,128} on x86 (Uros Bizjak)
   - mutexes: extend debug checks in mutex_lock() (Yunhui Cui)
   - Misc cleanups (Uros Bizjak)

  Lockdep:
   - Fix might_fault() lockdep check of current->mm->mmap_lock (Peter
     Zijlstra)
   - Don't disable interrupts on RT in disable_irq_nosync_lockdep.*()
     (Sebastian Andrzej Siewior)
   - Disable KASAN instrumentation of lockdep.c (Waiman Long)
   - Add kasan_check_byte() check in lock_acquire() (Waiman Long)
   - Misc cleanups (Sebastian Andrzej Siewior)

  Rust runtime integration:
   - Use Pin for all LockClassKey usages (Mitchell Levy)
   - sync: Add accessor for the lock behind a given guard (Alice Ryhl)
   - sync: condvar: Add wait_interruptible_freezable() (Alice Ryhl)
   - sync: lock: Add an example for Guard:: Lock_ref() (Boqun Feng)

  Split-lock detection feature (x86):
   - Fix warning mode with disabled mitigation mode (Maksim Davydov)

  Locking events:
   - Add locking events for rtmutex slow paths (Waiman Long)
   - Add locking events for lockdep (Waiman Long)"

* tag 'locking-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lockdep: Remove disable_irq_lockdep()
  lockdep: Don't disable interrupts on RT in disable_irq_nosync_lockdep.*()
  rust: lockdep: Use Pin for all LockClassKey usages
  rust: sync: condvar: Add wait_interruptible_freezable()
  rust: sync: lock: Add an example for Guard:: Lock_ref()
  rust: sync: Add accessor for the lock behind a given guard
  locking/lockdep: Add kasan_check_byte() check in lock_acquire()
  locking/lockdep: Disable KASAN instrumentation of lockdep.c
  locking/lock_events: Add locking events for lockdep
  locking/lock_events: Add locking events for rtmutex slow paths
  x86/split_lock: Fix the delayed detection logic
  lockdep/mm: Fix might_fault() lockdep check of current->mm->mmap_lock
  x86/locking: Remove semicolon from "lock" prefix
  locking/mutex: Add MUTEX_WARN_ON() into fast path
  x86/locking: Use asm_inline for {,try_}cmpxchg{64,128} emulations
  x86/locking: Use ALT_OUTPUT_SP() for percpu_{,try_}cmpxchg{64,128}_op()

Pull RCU updates from Boqun Feng:
 "Documentation:
   - Add broken-timing possibility to stallwarn.rst
   - Improve discussion of this_cpu_ptr(), add raw_cpu_ptr()
   - Document self-propagating callbacks
   - Point call_srcu() to call_rcu() for detailed memory ordering
   - Add CONFIG_RCU_LAZY delays to call_rcu() kernel-doc header
   - Clarify RCU_LAZY and RCU_LAZY_DEFAULT_OFF help text
   - Remove references to old grace-period-wait primitives

  srcu:
   - Introduce srcu_read_{un,}lock_fast(), which is similar to
     srcu_read_{un,}lock_lite(): avoid smp_mb()s in lock and unlock
     at the cost of calling synchronize_rcu() in synchronize_srcu()

     Moreover, by returning the percpu offset of the counter at
     srcu_read_lock_fast() time, srcu_read_unlock_fast() can avoid
     extra pointer dereferencing, which makes it faster than
     srcu_read_{un,}lock_lite()

     srcu_read_{un,}lock_fast() are intended to replace
     rcu_read_{un,}lock_trace() if possible

  RCU torture:
   - Add get_torture_init_jiffies() to return the start time of the test
   - Add a test_boost_holdoff module parameter to allow delaying
     boosting tests when building rcutorture as built-in
   - Add grace period sequence number logging at the beginning and end
     of failure/close-call results
   - Switch to hexadecimal for the expedited grace period sequence
     number in the rcu_exp_grace_period trace point
   - Make cur_ops->format_gp_seqs take buffer length
   - Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool
   - Complain when invalid SRCU reader_flavor is specified
   - Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing, which forces SRCU
     uses atomics even when percpu ops are NMI safe, and use the Kconfig
     for SRCU lockdep testing

  Misc:
   - Split rcu_report_exp_cpu_mult() mask parameter and use for tracing
   - Remove READ_ONCE() for rdp->gpwrap access in __note_gp_changes()
   - Fix get_state_synchronize_rcu_full() GP-start detection
   - Move RCU Tasks self-tests to core_initcall()
   - Print segment lengths in show_rcu_nocb_gp_state()
   - Make RCU watch ct_kernel_exit_state() warning
   - Flush console log from kernel_power_off()
   - rcutorture: Allow a negative value for nfakewriters
   - rcu: Update TREE05.boot to test normal synchronize_rcu()
   - rcu: Use _full() API to debug synchronize_rcu()

  Make RCU handle PREEMPT_LAZY better:
   - Fix header guard for rcu_all_qs()
   - rcu: Rename PREEMPT_AUTO to PREEMPT_LAZY
   - Update __cond_resched comment about RCU quiescent states
   - Handle unstable rdp in rcu_read_unlock_strict()
   - Handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y
   - osnoise: Provide quiescent states
   - Adjust rcutorture with possible PREEMPT_RCU=n && PREEMPT_COUNT=y
     combination
   - Limit PREEMPT_RCU configurations
   - Make rcutorture senario TREE07 and senario TREE10 use
     PREEMPT_LAZY=y"

* tag 'rcu-next-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits)
  rcutorture: Make scenario TREE07 build CONFIG_PREEMPT_LAZY=y
  rcutorture: Make scenario TREE10 build CONFIG_PREEMPT_LAZY=y
  rcu: limit PREEMPT_RCU configurations
  rcutorture: Update ->extendables check for lazy preemption
  rcutorture: Update rcutorture_one_extend_check() for lazy preemption
  osnoise: provide quiescent states
  rcu: Use _full() API to debug synchronize_rcu()
  rcu: Update TREE05.boot to test normal synchronize_rcu()
  rcutorture: Allow a negative value for nfakewriters
  Flush console log from kernel_power_off()
  context_tracking: Make RCU watch ct_kernel_exit_state() warning
  rcu/nocb: Print segment lengths in show_rcu_nocb_gp_state()
  rcu-tasks: Move RCU Tasks self-tests to core_initcall()
  rcu: Fix get_state_synchronize_rcu_full() GP-start detection
  torture: Make SRCU lockdep testing use srcu_read_lock_nmisafe()
  srcu: Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing
  rcutorture: Complain when invalid SRCU reader_flavor is specified
  rcutorture: Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool
  rcutorture: Make cur_ops->format_gp_seqs take buffer length
  rcutorture: Add ftrace-compatible timestamp to GP# failure/close-call output
  ...

Pull bitmap updates from Yury Norov:

 - cpumask_next_wrap() rework (me)

 - GENMASK() simplification (I Hsin)

 - rust bindings for cpumasks (Viresh and me)

 - scattered cleanups (Andy, Tamir, Vincent, Ignacio and Joel)

* tag 'bitmap-for-6.15' of https://github.com/norov/linux: (22 commits)
  cpumask: align text in comment
  riscv: fix test_and_{set,clear}_bit ordering documentation
  treewide: fix typo 'unsigned __init128' -> 'unsigned __int128'
  MAINTAINERS: add rust bindings entry for bitmap API
  rust: Add cpumask helpers
  uapi: Revert "bitops: avoid integer overflow in GENMASK(_ULL)"
  cpumask: drop cpumask_next_wrap_old()
  PCI: hv: Switch hv_compose_multi_msi_req_get_cpu() to using cpumask_next_wrap()
  scsi: lpfc: rework lpfc_next_{online,present}_cpu()
  scsi: lpfc: switch lpfc_irq_rebalance() to using cpumask_next_wrap()
  s390: switch stop_machine_yield() to using cpumask_next_wrap()
  padata: switch padata_find_next() to using cpumask_next_wrap()
  cpumask: use cpumask_next_wrap() where appropriate
  cpumask: re-introduce cpumask_next{,_and}_wrap()
  cpumask: deprecate cpumask_next_wrap()
  powerpc/xmon: simplify xmon_batch_next_cpu()
  ibmvnic: simplify ibmvnic_set_queue_affinity()
  virtio_net: simplify virtnet_set_affinity()
  objpool: rework objpool_pop()
  cpumask: add for_each_{possible,online}_cpu_wrap
  ...

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
  ...

Merge tag 'stop-machine.2025.03.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull stop-machine update from Paul McKenney:

 - Add a comment for the call to rcu_momentary_eqs() from
   multi_cpu_stop() explaining that its purpose is to suppress
   false-positive RCU CPU stall warnings

* tag 'stop-machine.2025.03.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  stop-machine: Add comment for rcu_momentary_eqs()

Pull kernel memory model updates from Paul McKenney:
 "Add more atomic operations, rework tags, and update documentation:

   - Add additional atomic operations (Puranjay Mohan)

   - Make better use of herd7 tags (Jonas Oberhauser)

   - Update documentation (Akira Yokosawa)

  These changes require v7.58 of the herd7 and klitmus tools, up from
  v7.52"

* tag 'lkmm.2025.03.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  tools/memory-model: glossary.txt: Fix indents
  tools/memory-model/README: Fix typo
  tools/memory-model: Distinguish between syntactic and semantic tags
  tools/memory-model: Switch to softcoded herd7 tags
  tools/memory-model: Define effect of Mb tags on RMWs in tools/...
  tools/memory-model: Define applicable tags on operation in tools/...
  tools/memory-model: Legitimize current use of tags in LKMM macros
  tools/memory-model: Add atomic_andnot() with its variants
  tools/memory-model: Add atomic_and()/or()/xor() and add_negative

Merge tag 'nolibc-20250308-for-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull nolibc updates from Paul McKenney:
 - 32bit s390 support
 - opendir() and friends
 - openat() support
 - sscanf() support
 - various cleanups

[ Paul has just forwarded the pull request from Thomas Weißschuh, so
  the tag signature is from Thomas, not Paul   - Linus ]

* tag 'nolibc-20250308-for-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (26 commits)
  tools/nolibc: don't use asm/ UAPI headers
  selftests/nolibc: stop testing constructor order
  selftests/nolibc: use O_RDONLY flag instead of 0
  tools/nolibc: drop outdated example from overview comment
  tools/nolibc: process open() vararg as mode_t
  tools/nolibc: always use openat(2) instead of open(2)
  tools/nolibc: add support for openat(2)
  selftests/nolibc: add armthumb configuration
  selftests/nolibc: explicitly enable ARM mode
  Revert "selftests: kselftest: Fix build failure with NOLIBC"
  tools/nolibc: add support for [v]sscanf()
  tools/nolibc: add support for 32-bit s390
  selftests/nolibc: rename s390 to s390x
  selftests/nolibc: only run constructor tests on nolibc
  selftests/nolibc: split up architecture list in run-tests.sh
  tools/nolibc: add support for directory access
  tools/nolibc: add support for sys_llseek()
  selftests/nolibc: always keep test kernel configuration up to date
  selftests/nolibc: execute defconfig before other targets
  selftests/nolibc: drop call to mrproper target
  ...

Pull sched_ext updates from Tejun Heo:

 - Add mechanism to count and report internal events. This significantly
   improves visibility on subtle corner conditions.

 - The default idle CPU selection logic is revamped and improved in
   multiple ways including being made topology aware.

 - sched_ext was disabling ttwu_queue for simplicity, which can be
   costly when hardware topology is more complex. Implement
   SCX_OPS_ALLOWED_QUEUED_WAKEUP so that BPF schedulers can selectively
   enable ttwu_queue.

 - tools/sched_ext updates to improve compatibility among others.

 - Other misc updates and fixes.

 - sched_ext/for-6.14-fixes were pulled a few times to receive
   prerequisite fixes and resolve conflicts.

* tag 'sched_ext-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (42 commits)
  sched_ext: idle: Refactor scx_select_cpu_dfl()
  sched_ext: idle: Honor idle flags in the built-in idle selection policy
  sched_ext: Skip per-CPU tasks in scx_bpf_reenqueue_local()
  sched_ext: Add trace point to track sched_ext core events
  sched_ext: Change the event type from u64 to s64
  sched_ext: Documentation: add task lifecycle summary
  tools/sched_ext: Provide a compatible helper for scx_bpf_events()
  selftests/sched_ext: Add NUMA-aware scheduler test
  tools/sched_ext: Provide consistent access to scx flags
  sched_ext: idle: Fix scx_bpf_pick_any_cpu_node() behavior
  sched_ext: idle: Introduce scx_bpf_nr_node_ids()
  sched_ext: idle: Introduce node-aware idle cpu kfunc helpers
  sched_ext: idle: Per-node idle cpumasks
  sched_ext: idle: Introduce SCX_OPS_BUILTIN_IDLE_PER_NODE
  sched_ext: idle: Make idle static keys private
  sched/topology: Introduce for_each_node_numadist() iterator
  mm/numa: Introduce nearest_node_nodemask()
  nodemask: numa: reorganize inclusion path
  nodemask: add nodes_copy()
  tools/sched_ext: Sync with scx repo
  ...

Pull cgroup updates from Tejun Heo:

 - Add deprecation info messages to cgroup1-only features

 - rstat updates including a bug fix and breaking up a critical section
   to reduce interrupt latency impact

 - Other misc and doc updates

* tag 'cgroup-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: rstat: Cleanup flushing functions and locking
  cgroup/rstat: avoid disabling irqs for O(num_cpu)
  mm: Fix a build breakage in memcontrol-v1.c
  blk-cgroup: Simplify policy files registration
  cgroup: Update file naming comment
  cgroup: Add deprecation message to legacy freezer controller
  mm: Add transformation message for per-memcg swappiness
  RFC cgroup/cpuset-v1: Add deprecation messages to sched_relax_domain_level
  cgroup/cpuset-v1: Add deprecation messages to memory_migrate
  cgroup/cpuset-v1: Add deprecation messages to mem_exclusive and mem_hardwall
  cgroup: Print message when /proc/cgroups is read on v2-only system
  cgroup/blkio: Add deprecation messages to reset_stats
  cgroup/cpuset-v1: Add deprecation messages to memory_spread_page and memory_spread_slab
  cgroup/cpuset-v1: Add deprecation messages to sched_load_balance and memory_pressure_enabled
  cgroup, docs: Be explicit about independence of RT_GROUP_SCHED and non-cpu controllers
  cgroup/rstat: Fix forceidle time in cpu.stat
  cgroup/misc: Remove unused misc_cg_res_total_usage
  cgroup/cpuset: Move procfs cpuset attribute under cgroup-v1.c
  cgroup: update comment about dropping cgroup kn refs