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Author SHA1 Message Date
Ramesh Errabolu
b043a81ce3 s390/pci: Expose firmware provided UID Checking state in sysfs 
The sysfs file /sys/bus/pci/devices/<device_id>/uid_is_unique provides
the UID Checking state as a per device attribute, highlighting its
effect of providing the guarantee that a device's UID is unique.
As a device attribute, this parameter is however unavailable if no
device is configured.

Expose the UID Checking state as:
  - A platform-level parameter
  - Available regardless of device presence or state

Signed-off-by: Ramesh Errabolu <ramesh@linux.ibm.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
 2025-10-04 18:40:42 +02:00
Wolfram Sang
1884f54e48 i2c-host for v6.18, part 2 
rtl9300 updates:
  - general cleanups
  - implemented block read/write support
  - added RTL9310 support
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Merge tag 'i2c-host-6.18-pt2' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow

i2c-host for v6.18, part 2

rtl9300 updates:
 - general cleanups
 - implemented block read/write support
 - added RTL9310 support
 2025-10-04 18:29:16 +02:00
Rong Tao
de7342228b bpf: Finish constification of 1st parameter of bpf_d_path() 
The commit 1b8abbb121 ("bpf...d_path(): constify path argument")
constified the first parameter of the bpf_d_path(), but failed to
update it in all places. Finish constification.

Otherwise the selftest fail to build:
.../selftests/bpf/bpf_experimental.h:222:12: error: conflicting types for 'bpf_path_d_path'
  222 | extern int bpf_path_d_path(const struct path *path, char *buf, size_t buf__sz) __ksym;
      |            ^
.../selftests/bpf/tools/include/vmlinux.h:153922:12: note: previous declaration is here
 153922 | extern int bpf_path_d_path(struct path *path, char *buf, size_t buf__sz) __weak __ksym;

Fixes: 1b8abbb121 ("bpf...d_path(): constify path argument")
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2025-10-04 09:05:23 -07:00
Linus Torvalds
f3826aa996 guest_memfd: 
* Add support for host userspace mapping of guest_memfd-backed memory for VM
   types that do NOT use support KVM_MEMORY_ATTRIBUTE_PRIVATE (which isn't
   precisely the same thing as CoCo VMs, since x86's SEV-MEM and SEV-ES have
   no way to detect private vs. shared).
 
   This lays the groundwork for removal of guest memory from the kernel direct
   map, as well as for limited mmap() for guest_memfd-backed memory.
 
   For more information see:
   * a6ad54137a ("Merge branch 'guest-memfd-mmap' into HEAD", 2025-08-27)
   * https://github.com/firecracker-microvm/firecracker/tree/feature/secret-hiding
     (guest_memfd in Firecracker)
   * https://lore.kernel.org/all/20250221160728.1584559-1-roypat@amazon.co.uk/
     (direct map removal)
   * https://lore.kernel.org/all/20250328153133.3504118-1-tabba@google.com/
     (mmap support)
 
 ARM:
 
 * Add support for FF-A 1.2 as the secure memory conduit for pKVM,
   allowing more registers to be used as part of the message payload.
 
 * Change the way pKVM allocates its VM handles, making sure that the
   privileged hypervisor is never tricked into using uninitialised
   data.
 
 * Speed up MMIO range registration by avoiding unnecessary RCU
   synchronisation, which results in VMs starting much quicker.
 
 * Add the dump of the instruction stream when panic-ing in the EL2
   payload, just like the rest of the kernel has always done. This will
   hopefully help debugging non-VHE setups.
 
 * Add 52bit PA support to the stage-1 page-table walker, and make use
   of it to populate the fault level reported to the guest on failing
   to translate a stage-1 walk.
 
 * Add NV support to the GICv3-on-GICv5 emulation code, ensuring
   feature parity for guests, irrespective of the host platform.
 
 * Fix some really ugly architecture problems when dealing with debug
   in a nested VM. This has some bad performance impacts, but is at
   least correct.
 
 * Add enough infrastructure to be able to disable EL2 features and
   give effective values to the EL2 control registers. This then allows
   a bunch of features to be turned off, which helps cross-host
   migration.
 
 * Large rework of the selftest infrastructure to allow most tests to
   transparently run at EL2. This is the first step towards enabling
   NV testing.
 
 * Various fixes and improvements all over the map, including one BE
   fix, just in time for the removal of the feature.
 
 LoongArch:
 
 * Detect page table walk feature on new hardware
 
 * Add sign extension with kernel MMIO/IOCSR emulation
 
 * Improve in-kernel IPI emulation
 
 * Improve in-kernel PCH-PIC emulation
 
 * Move kvm_iocsr tracepoint out of generic code
 
 RISC-V:
 
 * Added SBI FWFT extension for Guest/VM with misaligned delegation and
   pointer masking PMLEN features
 
 * Added ONE_REG interface for SBI FWFT extension
 
 * Added Zicbop and bfloat16 extensions for Guest/VM
 
 * Enabled more common KVM selftests for RISC-V
 
 * Added SBI v3.0 PMU enhancements in KVM and perf driver
 
 s390:
 
 * Improve interrupt cpu for wakeup, in particular the heuristic to decide
   which vCPU to deliver a floating interrupt to.
 
 * Clear the PTE when discarding a swapped page because of CMMA; this
   bug was introduced in 6.16 when refactoring gmap code.
 
 x86 selftests:
 
 * Add #DE coverage in the fastops test (the only exception that's guest-
   triggerable in fastop-emulated instructions).
 
 * Fix PMU selftests errors encountered on Granite Rapids (GNR), Sierra
   Forest (SRF) and Clearwater Forest (CWF).
 
 * Minor cleanups and improvements
 
 x86 (guest side):
 
 * For the legacy PCI hole (memory between TOLUD and 4GiB) to UC when
   overriding guest MTRR for TDX/SNP to fix an issue where ACPI auto-mapping
   could map devices as WB and prevent the device drivers from mapping their
   devices with UC/UC-.
 
 * Make kvm_async_pf_task_wake() a local static helper and remove its
   export.
 
 * Use native qspinlocks when running in a VM with dedicated vCPU=>pCPU
   bindings even when PV_UNHALT is unsupported.
 
 Generic:
 
 * Remove a redundant __GFP_NOWARN from kvm_setup_async_pf() as __GFP_NOWARN is
   now included in GFP_NOWAIT.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "This excludes the bulk of the x86 changes, which I will send
  separately. They have two not complex but relatively unusual conflicts
  so I will wait for other dust to settle.

  guest_memfd:

   - Add support for host userspace mapping of guest_memfd-backed memory
     for VM types that do NOT use support KVM_MEMORY_ATTRIBUTE_PRIVATE
     (which isn't precisely the same thing as CoCo VMs, since x86's
     SEV-MEM and SEV-ES have no way to detect private vs. shared).

     This lays the groundwork for removal of guest memory from the
     kernel direct map, as well as for limited mmap() for
     guest_memfd-backed memory.

     For more information see:
       - commit a6ad54137a ("Merge branch 'guest-memfd-mmap' into HEAD")
       - guest_memfd in Firecracker:
           https://github.com/firecracker-microvm/firecracker/tree/feature/secret-hiding
       - direct map removal:
           https://lore.kernel.org/all/20250221160728.1584559-1-roypat@amazon.co.uk/
       - mmap support:
           https://lore.kernel.org/all/20250328153133.3504118-1-tabba@google.com/

  ARM:

   - Add support for FF-A 1.2 as the secure memory conduit for pKVM,
     allowing more registers to be used as part of the message payload.

   - Change the way pKVM allocates its VM handles, making sure that the
     privileged hypervisor is never tricked into using uninitialised
     data.

   - Speed up MMIO range registration by avoiding unnecessary RCU
     synchronisation, which results in VMs starting much quicker.

   - Add the dump of the instruction stream when panic-ing in the EL2
     payload, just like the rest of the kernel has always done. This
     will hopefully help debugging non-VHE setups.

   - Add 52bit PA support to the stage-1 page-table walker, and make use
     of it to populate the fault level reported to the guest on failing
     to translate a stage-1 walk.

   - Add NV support to the GICv3-on-GICv5 emulation code, ensuring
     feature parity for guests, irrespective of the host platform.

   - Fix some really ugly architecture problems when dealing with debug
     in a nested VM. This has some bad performance impacts, but is at
     least correct.

   - Add enough infrastructure to be able to disable EL2 features and
     give effective values to the EL2 control registers. This then
     allows a bunch of features to be turned off, which helps cross-host
     migration.

   - Large rework of the selftest infrastructure to allow most tests to
     transparently run at EL2. This is the first step towards enabling
     NV testing.

   - Various fixes and improvements all over the map, including one BE
     fix, just in time for the removal of the feature.

  LoongArch:

   - Detect page table walk feature on new hardware

   - Add sign extension with kernel MMIO/IOCSR emulation

   - Improve in-kernel IPI emulation

   - Improve in-kernel PCH-PIC emulation

   - Move kvm_iocsr tracepoint out of generic code

  RISC-V:

   - Added SBI FWFT extension for Guest/VM with misaligned delegation
     and pointer masking PMLEN features

   - Added ONE_REG interface for SBI FWFT extension

   - Added Zicbop and bfloat16 extensions for Guest/VM

   - Enabled more common KVM selftests for RISC-V

   - Added SBI v3.0 PMU enhancements in KVM and perf driver

  s390:

   - Improve interrupt cpu for wakeup, in particular the heuristic to
     decide which vCPU to deliver a floating interrupt to.

   - Clear the PTE when discarding a swapped page because of CMMA; this
     bug was introduced in 6.16 when refactoring gmap code.

  x86 selftests:

   - Add #DE coverage in the fastops test (the only exception that's
     guest- triggerable in fastop-emulated instructions).

   - Fix PMU selftests errors encountered on Granite Rapids (GNR),
     Sierra Forest (SRF) and Clearwater Forest (CWF).

   - Minor cleanups and improvements

  x86 (guest side):

   - For the legacy PCI hole (memory between TOLUD and 4GiB) to UC when
     overriding guest MTRR for TDX/SNP to fix an issue where ACPI
     auto-mapping could map devices as WB and prevent the device drivers
     from mapping their devices with UC/UC-.

   - Make kvm_async_pf_task_wake() a local static helper and remove its
     export.

   - Use native qspinlocks when running in a VM with dedicated
     vCPU=>pCPU bindings even when PV_UNHALT is unsupported.

  Generic:

   - Remove a redundant __GFP_NOWARN from kvm_setup_async_pf() as
     __GFP_NOWARN is now included in GFP_NOWAIT.

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (178 commits)
  KVM: s390: Fix to clear PTE when discarding a swapped page
  KVM: arm64: selftests: Cover ID_AA64ISAR3_EL1 in set_id_regs
  KVM: arm64: selftests: Remove a duplicate register listing in set_id_regs
  KVM: arm64: selftests: Cope with arch silliness in EL2 selftest
  KVM: arm64: selftests: Add basic test for running in VHE EL2
  KVM: arm64: selftests: Enable EL2 by default
  KVM: arm64: selftests: Initialize HCR_EL2
  KVM: arm64: selftests: Use the vCPU attr for setting nr of PMU counters
  KVM: arm64: selftests: Use hyp timer IRQs when test runs at EL2
  KVM: arm64: selftests: Select SMCCC conduit based on current EL
  KVM: arm64: selftests: Provide helper for getting default vCPU target
  KVM: arm64: selftests: Alias EL1 registers to EL2 counterparts
  KVM: arm64: selftests: Create a VGICv3 for 'default' VMs
  KVM: arm64: selftests: Add unsanitised helpers for VGICv3 creation
  KVM: arm64: selftests: Add helper to check for VGICv3 support
  KVM: arm64: selftests: Initialize VGICv3 only once
  KVM: arm64: selftests: Provide kvm_arch_vm_post_create() in library code
  KVM: selftests: Add ex_str() to print human friendly name of exception vectors
  selftests/kvm: remove stale TODO in xapic_state_test
  KVM: selftests: Handle Intel Atom errata that leads to PMU event overcount
  ...
 2025-10-04 08:52:16 -07:00
Linus Torvalds
bf897d2626 virtio,vhost: fixes, cleanups 
Just fixes and cleanups this time around.  The mapping cleanups are
 preparing the ground for new features, though.
 In order patches were almost there but I feel they didn't
 spend enough time in next yet.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "Just fixes and cleanups this time around. The mapping cleanups are
  preparing the ground for new features, though"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio-vdpa: Drop redundant conversion to bool
  vduse: Use fixed 4KB bounce pages for non-4KB page size
  vduse: switch to use virtio map API instead of DMA API
  vdpa: introduce map ops
  vdpa: support virtio_map
  virtio: introduce map ops in virtio core
  virtio_ring: rename dma_handle to map_handle
  virtio: introduce virtio_map container union
  virtio: rename dma helpers
  virtio_ring: switch to use dma_{map|unmap}_page()
  virtio_ring: constify virtqueue pointer for DMA helpers
  virtio_balloon: Remove redundant __GFP_NOWARN
  vhost: vringh: Fix copy_to_iter return value check
  vhost: vringh: Modify the return value check
 2025-10-04 08:48:16 -07:00
Linus Torvalds
55a42f78ff VFIO updates for v6.18-rc1 
- Use fdinfo to expose the sysfs path of a device represented by a
    vfio device file. (Alex Mastro)
 
  - Mark vfio-fsl-mc, vfio-amba, and the reset functions for
    vfio-platform for removal as these are either orphaned or believed
    to be unused. (Alex Williamson)
 
  - Add reviewers for vfio-platform to save it from also being marked
    for removal. (Mostafa Saleh, Pranjal Shrivastava)
 
  - VFIO selftests, including basic sanity testing and minimal userspace
    drivers for testing against real hardware.  This is also expected to
    provide integration with KVM selftests for KVM-VFIO interfaces.
    (David Matlack, Josh Hilke)
 
  - Fix drivers/cdx and vfio/cdx to build without CONFIG_GENERIC_MSI_IRQ.
    (Nipun Gupta)
 
  - Fix reference leak in hisi_acc. (Miaoqian Lin)
 
  - Use consistent return for unsupported device feature. (Alex Mastro)
 
  - Unwind using the correct memory free callback in vfio/pds.
    (Zilin Guan)
 
  - Use IRQ_DISABLE_LAZY flag to improve handling of pre-PCI2.3 INTx
    and resolve stalled interrupt on ppc64. (Timothy Pearson)
 
  - Enable GB300 in nvgrace-gpu vfio-pci variant driver. (Tushar Dave)
 
  - Misc:
    - Drop unnecessary ternary conversion in vfio/pci. (Xichao Zhao)
    - Grammatical fix in nvgrace-gpu. (Morduan Zang)
    - Update Shameer's email address. (Shameer Kolothum)
    - Fix document build warning. (Alex Williamson)
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Merge tag 'vfio-v6.18-rc1' of https://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Use fdinfo to expose the sysfs path of a device represented by a vfio
   device file (Alex Mastro)

 - Mark vfio-fsl-mc, vfio-amba, and the reset functions for
   vfio-platform for removal as these are either orphaned or believed to
   be unused (Alex Williamson)

 - Add reviewers for vfio-platform to save it from also being marked for
   removal (Mostafa Saleh, Pranjal Shrivastava)

 - VFIO selftests, including basic sanity testing and minimal userspace
   drivers for testing against real hardware. This is also expected to
   provide integration with KVM selftests for KVM-VFIO interfaces (David
   Matlack, Josh Hilke)

 - Fix drivers/cdx and vfio/cdx to build without CONFIG_GENERIC_MSI_IRQ
   (Nipun Gupta)

 - Fix reference leak in hisi_acc (Miaoqian Lin)

 - Use consistent return for unsupported device feature (Alex Mastro)

 - Unwind using the correct memory free callback in vfio/pds (Zilin
   Guan)

 - Use IRQ_DISABLE_LAZY flag to improve handling of pre-PCI2.3 INTx and
   resolve stalled interrupt on ppc64 (Timothy Pearson)

 - Enable GB300 in nvgrace-gpu vfio-pci variant driver (Tushar Dave)

 - Misc:
    - Drop unnecessary ternary conversion in vfio/pci (Xichao Zhao)
    - Grammatical fix in nvgrace-gpu (Morduan Zang)
    - Update Shameer's email address (Shameer Kolothum)
    - Fix document build warning (Alex Williamson)

* tag 'vfio-v6.18-rc1' of https://github.com/awilliam/linux-vfio: (48 commits)
  vfio/nvgrace-gpu: Add GB300 SKU to the devid table
  vfio/pci: Fix INTx handling on legacy non-PCI 2.3 devices
  vfio/pds: replace bitmap_free with vfree
  vfio: return -ENOTTY for unsupported device feature
  hisi_acc_vfio_pci: Fix reference leak in hisi_acc_vfio_debug_init
  vfio/platform: Mark reset drivers for removal
  vfio/amba: Mark for removal
  MAINTAINERS: Add myself as VFIO-platform reviewer
  MAINTAINERS: Add myself as VFIO-platform reviewer
  docs: proc.rst: Fix VFIO Device title formatting
  vfio: selftests: Fix .gitignore for already tracked files
  vfio/cdx: update driver to build without CONFIG_GENERIC_MSI_IRQ
  cdx: don't select CONFIG_GENERIC_MSI_IRQ
  MAINTAINERS: Update Shameer Kolothum's email address
  vfio: selftests: Add a script to help with running VFIO selftests
  vfio: selftests: Make iommufd the default iommu_mode
  vfio: selftests: Add iommufd mode
  vfio: selftests: Add iommufd_compat_type1{,v2} modes
  vfio: selftests: Add vfio_type1v2_mode
  vfio: selftests: Replicate tests across all iommu_modes
  ...
 2025-10-04 08:24:54 -07:00
Randy Dunlap
8be70a8fc6 security: keys: use menuconfig for KEYS symbol 
Give the KEYS kconfig symbol and its associated symbols a separate menu
space under Security options by using "menuconfig" instead of "config".

This also makes it easier to find the security and LSM options.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2025-10-04 17:25:35 +03:00
Eric Biggers
9b8d24a49f KEYS: encrypted: Use SHA-256 library instead of crypto_shash 
Instead of the "sha256" crypto_shash, just use sha256().  Similarly,
instead of the "hmac(sha256)" crypto_shash, just use
hmac_sha256_usingrawkey().  This is simpler and faster.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2025-10-04 17:25:35 +03:00
Bhanu Seshu Kumar Valluri
7a6399e327 ALSA: emu10k1: Fix typo in docs 
interally => internally

Signed-off-by: Bhanu Seshu Kumar Valluri <bhanuseshukumar@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
 2025-10-04 15:47:24 +02:00
Adam Holliday
328b80b29a ALSA: hda/realtek: Add quirk for ASUS ROG Zephyrus Duo 
The ASUS ROG Zephyrus Duo 15 SE (GX551QS) with ALC 289 codec requires specific
pin configuration for proper volume control. Without this quirk, volume
adjustments produce a muffled sound effect as only certain channels attenuate,
leaving bass frequency at full volume.

Testing with hdajackretask confirms these pin tweaks fix the issue:
- Pin 0x17: Internal Speaker (LFE)
- Pin 0x1e: Internal Speaker

Signed-off-by: Adam Holliday <dochollidayxx@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
 2025-10-04 15:46:48 +02:00
Jonas Jelonek
1e33137d47 i2c: rtl9300: add support for RTL9310 I2C controller 
Add support for the internal I2C controllers of RTL9310 series based
SoCs to the driver for RTL9300. Add register definitions, chip-specific
functions and compatible strings for known RTL9310-based SoCs RTL9311,
RTL9312 and RTL9313.

Make use of a new device tree property 'realtek,scl' which needs to be
specified in case both or only the second master is used. This is
required due how the register layout changed in contrast to RTL9300,
which has SCL selection in a global register instead of a
master-specific one.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Tested-by: Sven Eckelmann <sven@narfation.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250927101931.71575-10-jelonek.jonas@gmail.com
 2025-10-04 11:43:41 +02:00
Jonas Jelonek
99fd09e01d dt-bindings: i2c: realtek,rtl9301-i2c: extend for RTL9310 support 
Adjust the regex for child-node address to account for the fact that
RTL9310 supports 12 instead of only 8 SDA lines. Also, narrow this per
variant.

Add a vendor-specific property to explicitly specify the SCL line number
of the defined I2C controller/master. This is required, in particular
for RTL9310, to operate on the correct SCL for each controller. Require
this property to be specified for RTL9310.

Add compatibles for known SoC variants RTL9311, RTL9312 and RTL9313.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250927101931.71575-9-jelonek.jonas@gmail.com
 2025-10-04 11:43:41 +02:00
Jonas Jelonek
46fe826568 i2c: rtl9300: use scoped guard instead of explicit lock/unlock 
Use the scoped guard infrastructure which unlocks a mutex automatically
when the guard goes out of scope, instead of explicit lock and unlock.
This simplifies the code and control flow in rtl9300_i2c_smbus_xfer and
removes the need of using goto in error cases to unlock before
returning.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # On RTL9302C based board
Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250927101931.71575-8-jelonek.jonas@gmail.com
 2025-10-04 11:43:40 +02:00
Jonas Jelonek
059374aa0a i2c: rtl9300: separate xfer configuration and execution 
So far, the rtl9300_i2c_smbus_xfer code is quite a mess with function
calls distributed over the whole function setting different values in
different cases. Calls to rtl9300_i2c_config_xfer and
rtl9300_i2c_reg_addr_set are used in every case-block with varying
values whose meaning is not instantly obvious. In some cases, there are
additional calls within these case-blocks doing more things.

This is in general a bad design and especially really bad for
readability and maintainability because it distributes changes or
issues to multiple locations due to the same function being called with
different hardcoded values in different places.

To have a good structure, setting different parameters based on the
desired operation should not be interleaved with applying these
parameters to the hardware registers. Or in different words, the
parameter site should be mixed with the call site.

Thus, separate configuration and execution of an SMBus xfer within
rtl9300_i2c_smbus_xfer to improve readability and maintainability. Add a
new 'struct rtl9300_i2c_xfer' to carry the required parameters for an
xfer which are configured based on the input parameters within a single
switch-case block, without having any function calls within this block.

The function calls to actually apply these values to the hardware
registers then appear below in a single place and just operate on the
passed instance of 'struct rtl9300_i2c_xfer'. These are
'rtl9300_i2c_prepare_xfer' which combines applying all parameters of the
xfer to the corresponding register, and 'rtl9300_i2c_do_xfer' which
actually executes the xfer and does post-processing if needed.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Tested-by: Sven Eckelmann <sven@narfation.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # On RTL9302C based board
Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250927101931.71575-7-jelonek.jonas@gmail.com
 2025-10-04 11:43:40 +02:00
Jonas Jelonek
d5b4fd6ed8 i2c: rtl9300: do not set read mode on every transfer 
Move the operation to set the read mode from config_xfer to probe.

The I2C controller of RTL9300 and RTL9310 support a legacy message mode
for READs with 'Read Address Data' instead of the standard format 'Write
Address ; Read Data'. There is no way to pass that via smbus_xfer, thus
there is no point in supported this in the driver and moreover no point
in setting this on every transaction. Setting this once in the probe
call is sufficient.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Tested-by: Sven Eckelmann <sven@narfation.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # On RTL9302C based board
Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250927101931.71575-6-jelonek.jonas@gmail.com
 2025-10-04 11:43:40 +02:00
Jonas Jelonek
d1cef7afc3 i2c: rtl9300: move setting SCL frequency to config_io 
Move the register operation to set the SCL frequency to the
rtl9300_i2c_config_io function instead of the rtl9300_i2c_config_xfer
function. This rather belongs there next to selecting the current SDA
output line.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Tested-by: Sven Eckelmann <sven@narfation.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # On RTL9302C based board
Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250927101931.71575-5-jelonek.jonas@gmail.com
 2025-10-04 11:43:40 +02:00
Jonas Jelonek
c840492ad7 i2c: rtl9300: rename internal sda_pin to sda_num 
Rename the internally used 'sda_pin' to 'sda_num' to make it clear that
this is NOT the actual pin number of the GPIO pin but rather the logical
SDA channel number. Although the alternate function SDA_Y is sometimes
given with the GPIO number, this is not always the case. Thus, avoid any
confusion or misconfiguration by giving the variable the correct name.

This follows the description change in the devicetree bindings.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Tested-by: Sven Eckelmann <sven@narfation.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # On RTL9302C based board
Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250927101931.71575-4-jelonek.jonas@gmail.com
 2025-10-04 11:43:40 +02:00
Jonas Jelonek
0395a5e8fd dt-bindings: i2c: realtek,rtl9301-i2c: fix wording and typos 
Fix wording of binding description to use plural because there is not
only a single RTL9300 SoC. RTL9300 describes a whole family of Realtek
SoCs.

Add missing word 'of' in description of reg property.

Change 'SDA pin' to 'SDA line number' because the property must contain
the SDA (channel) number ranging from 0-7 instead of a real pin number.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # On RTL9302C based board
Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250927101931.71575-3-jelonek.jonas@gmail.com
 2025-10-04 11:43:40 +02:00
Jonas Jelonek
85f1c01ce2 i2c: rtl9300: use regmap fields and API for registers 
Adapt the RTL9300 I2C controller driver to use more of the regmap
API, especially make use of reg_field and regmap_field instead of macros
to represent registers. Most register operations are performed through
regmap_field_* API then.

Handle SCL selection using separate chip-specific functions since this
is already known to differ between the Realtek SoC families in such a
way that this cannot be properly handled using just a different
reg_field.

This makes it easier to add support for newer generations or to handle
differences between specific revisions within a series. Just by
defining a separate driver data structure with the corresponding
register field definitions and linking it to a new compatible.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Tested-by: Sven Eckelmann <sven@narfation.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # On RTL9302C based board
Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250927101931.71575-2-jelonek.jonas@gmail.com
 2025-10-04 11:43:40 +02:00
Harshal Gohel
d3c2191d49 i2c: rtl9300: Implement I2C block read and write 
It was noticed that the original implementation of SMBus Block Write in the
driver was actually an I2C Block Write. Both differ only in the Count byte
before the actual data:

  S Addr Wr [A] Comm [A] Count [A] Data [A] Data [A] ... [A] Data [A] P

The I2C Block Write is just skipping this Count byte and starts directly
with the data:

  S Addr Wr [A] Comm [A] Data [A] Data [A] ... [A] Data [A] P

The I2C controller of RTL93xx doesn't handle this Count byte special and it
is simply another one of (16 possible) data bytes. Adding support for the
I2C Block Write therefore only requires skipping the count byte (0) in
data->block.

It is similar for reads. The SMBUS Block read is having a Count byte before
the data:

  S Addr Wr [A] Comm [A]
            Sr Addr Rd [A] [Count] A [Data] A [Data] A ... A [Data] NA P

And the I2C Block Read is directly starting with the actual data:

  S Addr Wr [A] Comm [A]
            Sr Addr Rd [A] [Data] A [Data] A ... A [Data] NA P

The I2C controller is also not handling this byte in a special way. It
simply provides every byte after the Rd marker + Ack as part of the 16 byte
receive buffer (registers). The content of this buffer just has to be
copied to the right position in the receive data->block.

Signed-off-by: Harshal Gohel <hg@simonwunderlich.de>
Co-developed-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Tested-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/all/20250927-i2c-rtl9300-multi-byte-v7-2-c0fd0e78b818@narfation.org
 2025-10-04 11:43:40 +02:00
Linus Torvalds
cbf33b8e0b bpf-fixes 
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Pull bpf fixes from Alexei Starovoitov:

 - Fix selftests/bpf (typo, conflicts) and unbreak BPF CI (Jiri Olsa)

 - Remove linux/unaligned.h dependency for libbpf_sha256 (Andrii
   Nakryiko) and add a test (Eric Biggers)

 - Reject negative offsets for ALU operations in the verifier (Yazhou
   Tang) and add a test (Eduard Zingerman)

 - Skip scalar adjustment for BPF_NEG operation if destination register
   is a pointer (Brahmajit Das) and add a test (KaFai Wan)

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  libbpf: Fix missing #pragma in libbpf_utils.c
  selftests/bpf: Add tests for rejection of ALU ops with negative offsets
  selftests/bpf: Add test for libbpf_sha256()
  bpf: Reject negative offsets for ALU ops
  libbpf: remove linux/unaligned.h dependency for libbpf_sha256()
  libbpf: move libbpf_sha256() implementation into libbpf_utils.c
  libbpf: move libbpf_errstr() into libbpf_utils.c
  libbpf: remove unused libbpf_strerror_r and STRERR_BUFSIZE
  libbpf: make libbpf_errno.c into more generic libbpf_utils.c
  selftests/bpf: Add test for BPF_NEG alu on CONST_PTR_TO_MAP
  bpf: Skip scalar adjustment for BPF_NEG if dst is a pointer
  selftests/bpf: Fix realloc size in bpf_get_addrs
  selftests/bpf: Fix typo in subtest_basic_usdt after merge conflict
  selftests/bpf: Fix open-coded gettid syscall in uprobe syscall tests
 2025-10-03 19:38:19 -07:00
Linus Torvalds
d955299b5c soc: build fix for 6.18 
One commit for the dt bindings was missing from the dt branch, this
 one is already pending in the clk tree that contains the corresponding
 device driver.
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Merge tag 'soc-fixes-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC build fix from Arnd Bergmann:
 "One commit for the dt bindings was missing from the dt branch, this
  one is already pending in the clk tree that contains the corresponding
  device driver"

* tag 'soc-fixes-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  dt-bindings: clock: Add ARTPEC-8 clock controller
 2025-10-03 19:36:39 -07:00
Linus Torvalds
674b0ddb75 SCSI misc on 20251002 
Usual driver updates (ufs, mpi3mr, lpfc, pm80xx, mpt3sas) plus
 assorted cleanups and fixes.  The only core update is to sd.c and is
 mostly cosmetic.
 
 Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "Usual driver updates (ufs, mpi3mr, lpfc, pm80xx, mpt3sas) plus
  assorted cleanups and fixes.

  The only core update is to sd.c and is mostly cosmetic"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (105 commits)
  scsi: MAINTAINERS: Update FC element owners
  scsi: mpt3sas: Update driver version to 54.100.00.00
  scsi: mpt3sas: Add support for 22.5 Gbps SAS link rate
  scsi: mpt3sas: Suppress unnecessary IOCLogInfo on CONFIG_INVALID_PAGE
  scsi: mpt3sas: Fix crash in transport port remove by using ioc_info()
  scsi: ufs: ufs-qcom: Add support for limiting HS gear and rate
  scsi: ufs: pltfrm: Add DT support to limit HS gear and gear rate
  scsi: ufs: ufs-qcom: Remove redundant re-assignment to hs_rate
  scsi: ufs: dt-bindings: Document gear and rate limit properties
  scsi: ufs: core: Fix data race in CPU latency PM QoS request handling
  scsi: libfc: Fix potential buffer overflow in fc_ct_ms_fill()
  scsi: storvsc: Remove redundant ternary operators
  scsi: ufs: core: Change MCQ interrupt enable flow
  scsi: smartpqi: Replace kmalloc() + copy_from_user() with memdup_user()
  scsi: hpsa: Replace kmalloc() + copy_from_user() with memdup_user()
  scsi: hpsa: Fix potential memory leak in hpsa_big_passthru_ioctl()
  scsi: lpfc: Copyright updates for 14.4.0.11 patches
  scsi: lpfc: Update lpfc version to 14.4.0.11
  scsi: lpfc: Convert debugfs directory counts from atomic to unsigned int
  scsi: lpfc: Clean up extraneous phba dentries
  ...
 2025-10-03 19:17:48 -07:00
Linus Torvalds
7dbec0bbc3 dm docs: fix typos 
dm, dm-ima, dm-bufio, dm-vdo, dm-raid: small refactoring
 
 dm-error: mark it with DM_TARGET_PASSES_INTEGRITY
 
 dm-pcache: a new target for read/write caching on persistent memory
 
 dm-request-based: fix NULL pointer dereference and quiesce_depth out of sync
 
 dm-linear: optimize REQ_PREFLUSH
 
 dm-vdo: return error on corrupted metadata
 
 dm-integrity: support asynchronous hash interface
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Merge tag 'for-6.18/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mikulas Patocka:

 - a new dm-pcache target for read/write caching on persistent memory

 - fix typos in docs

 - misc small refactoring

 - mark dm-error with DM_TARGET_PASSES_INTEGRITY

 - dm-request-based: fix NULL pointer dereference and quiesce_depth out of sync

 - dm-linear: optimize REQ_PREFLUSH

 - dm-vdo: return error on corrupted metadata

 - dm-integrity: support asynchronous hash interface

* tag 'for-6.18/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (27 commits)
  dm raid: use proper md_ro_state enumerators
  dm-integrity: prefer synchronous hash interface
  dm-integrity: enable asynchronous hash interface
  dm-integrity: rename internal_hash
  dm-integrity: add the "offset" argument
  dm-integrity: allocate the recalculate buffer with kmalloc
  dm-integrity: introduce integrity_kmap and integrity_kunmap
  dm-integrity: replace bvec_kmap_local with kmap_local_page
  dm-integrity: use internal variable for digestsize
  dm vdo: return error on corrupted metadata in start_restoring_volume functions
  dm vdo: Update code to use mem_is_zero
  dm: optimize REQ_PREFLUSH with data when using the linear target
  dm-pcache: use int type to store negative error codes
  dm: fix "writen"->"written"
  dm-pcache: cleanup: fix coding style report by checkpatch.pl
  dm-pcache: remove ctrl_lock for pcache_cache_segment
  dm: fix NULL pointer dereference in __dm_suspend()
  dm: fix queue start/stop imbalance under suspend/load/resume races
  dm-pcache: add persistent cache target in device-mapper
  dm error: mark as DM_TARGET_PASSES_INTEGRITY
  ...
 2025-10-03 18:48:02 -07:00
Linus Torvalds
2ccb4d203f RDMA v6.18 merge window pull request 
A new Pensando ionic driver, a new Gen 3 HW support for Intel irdma,
 and lots of small bnxt_re improvements.
 
 - Small bug fixes and improves to hfi1, efa, mlx5, erdma, rdmarvt, siw
 
 - Allow userspace access to IB service records through the rdmacm
 
 - Optimize dma mapping for erdma
 
 - Fix shutdown of the GSI QP in mana
 
 - Support relaxed ordering MR and fix a corruption bug with mlx5 DMA Data
   Direct
 
 - Many improvement to bnxt_re:
    * Debugging features and counters
    * Improve performance of some commands
    * Change flow_label reporting in completions
    * Mirror vnic
    * RDMA flow support
 
 - New RDMA driver for Pensando Ethernet devices: ionic
 
 - Gen 3 hardware support for the Intel irdma driver
 
 - Fix rdma routing resolution with VRFs
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "A new Pensando ionic driver, a new Gen 3 HW support for Intel irdma,
  and lots of small bnxt_re improvements.

   - Small bug fixes and improves to hfi1, efa, mlx5, erdma, rdmarvt,
     siw

   - Allow userspace access to IB service records through the rdmacm

   - Optimize dma mapping for erdma

   - Fix shutdown of the GSI QP in mana

   - Support relaxed ordering MR and fix a corruption bug with mlx5 DMA
     Data Direct

   - Many improvement to bnxt_re:
       - Debugging features and counters
       - Improve performance of some commands
       - Change flow_label reporting in completions
       - Mirror vnic
       - RDMA flow support

   - New RDMA driver for Pensando Ethernet devices: ionic

   - Gen 3 hardware support for the Intel irdma driver

   - Fix rdma routing resolution with VRFs"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (85 commits)
  RDMA/ionic: Fix memory leak of admin q_wr
  RDMA/siw: Always report immediate post SQ errors
  RDMA/bnxt_re: improve clarity in ALLOC_PAGE handler
  RDMA/irdma: Remove unused struct irdma_cq fields
  RDMA/irdma: Fix positive vs negative error codes in irdma_post_send()
  RDMA/bnxt_re: Remove non-statistics counters from hw_counters
  RDMA/bnxt_re: Add debugfs info entry for device and resource information
  RDMA/bnxt_re: Fix incorrect errno used in function comments
  RDMA: Use %pe format specifier for error pointers
  RDMA/ionic: Use ether_addr_copy instead of memcpy
  RDMA/ionic: Fix build failure on SPARC due to xchg() operand size
  RDMA/rxe: Fix race in do_task() when draining
  IB/sa: Fix sa_local_svc_timeout_ms read race
  IB/ipoib: Ignore L3 master device
  RDMA/core: Use route entry flag to decide on loopback traffic
  RDMA/core: Resolve MAC of next-hop device without ARP support
  RDMA/core: Squash a single user static function
  RDMA/irdma: Update Kconfig
  RDMA/irdma: Extend CQE Error and Flush Handling for GEN3 Devices
  RDMA/irdma: Add Atomic Operations support
  ...
 2025-10-03 18:35:22 -07:00
Linus Torvalds
e56ebe27a0 iommufd 6.18 merge window pull 
Two minor fixes
 
 - Make the selftest work again on x86 platforms with iommus enabled
 
 - Fix a compiler warning in the userspace kselftest
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd

Pull iommufd updates from Jason Gunthorpe:
 "Two minor fixes:

   - Make the selftest work again on x86 platforms with iommus enabled

   - Fix a compiler warning in the userspace kselftest"

* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
  iommufd: Register iommufd mock devices with fwspec
  iommu/selftest: prevent use of uninitialized variable
 2025-10-03 18:18:48 -07:00
Linus Torvalds
8a44189f20 fwctl 6.17 merge window rc pull request 
- Fix mismtached kvalloc() kfree() on error paths
 
 - Remove NOP dev_err_probe(), shouldn't print on error paths anyhow
 
 - For mlx5 permit:
     MLX5_CMD_OP_MODIFY_CONG_STATUS
     MLX5_CMD_OP_QUERY_ADJACENT_FUNCTIONS_ID
     MLX5_CMD_OP_DELEGATE_VHCA_MANAGEMENT
     MLX5_CMD_OP_QUERY_DELEGATED_VHCA
 
 - Use memdup_user in pds
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Merge tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/fwctl/fwctl

Pull fwctl updates from Jason Gunthorpe:

 - Fix mismatched kvalloc() kfree() on error paths

 - Remove NOP dev_err_probe(), shouldn't print on error paths anyhow

 - For mlx5 permit:
    MLX5_CMD_OP_MODIFY_CONG_STATUS
    MLX5_CMD_OP_QUERY_ADJACENT_FUNCTIONS_ID
    MLX5_CMD_OP_DELEGATE_VHCA_MANAGEMENT
    MLX5_CMD_OP_QUERY_DELEGATED_VHCA

 - Use memdup_user in pds

* tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/fwctl/fwctl:
  pds_fwctl: Replace kzalloc + copy_from_user with memdup_user in pdsfc_fw_rpc
  fwctl/mlx5: Add Adjacent function query commands and their scope
  fwctl/mlx5: Allow MODIFY_CONG_STATUS command
  pds_fwctl: Remove the use of dev_err_probe()
  fwctl/mlx5: Fix memory alloc/free in mlx5ctl_fw_rpc()
 2025-10-03 18:15:39 -07:00
Linus Torvalds
bed0653fe2 IOMMU Updates for Linux v6.18: 
Including:
 
 	- Inte VT-d:
 	 - IOMMU driver updated to the latest VT-d specification.
 	 - Don't enable PRS if PDS isn't supported.
 	 - Replace snprintf with scnprintf.
 	 - Fix legacy mode page table dump through debugfs.
 	 - Miscellaneous cleanups.
 
 	- AMD-Vi:
 	  - Support kdump boot when SNP is enabled.
 
 	- Apple-DART:
 	  - 4-level page-table support.
 
 	- RISC-V IOMMU:
 	  - ACPI support.
 
 	- Small number of miscellaneous cleanups and fixes.
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Merge tag 'iommu-updates-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

Pull iommu updates from Joerg Roedel:

 - Inte VT-d:
    - IOMMU driver updated to the latest VT-d specification
    - Don't enable PRS if PDS isn't supported
    - Replace snprintf with scnprintf
    - Fix legacy mode page table dump through debugfs
    - Miscellaneous cleanups

 - AMD-Vi:
     - Support kdump boot when SNP is enabled

 - Apple-DART:
     - 4-level page-table support

 - RISC-V IOMMU:
     - ACPI support

 - Small number of miscellaneous cleanups and fixes

* tag 'iommu-updates-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (22 commits)
  iommu/vt-d: Disallow dirty tracking if incoherent page walk
  iommu/vt-d: debugfs: Avoid dumping context command register
  iommu/vt-d: Removal of Advanced Fault Logging
  iommu/vt-d: PRS isn't usable if PDS isn't supported
  iommu/vt-d: Remove LPIG from page group response descriptor
  iommu/vt-d: Drop unused cap_super_offset()
  iommu/vt-d: debugfs: Fix legacy mode page table dump logic
  iommu/vt-d: Replace snprintf with scnprintf in dmar_latency_snapshot()
  iommu/io-pgtable-dart: Fix off by one error in table index check
  iommu/riscv: Add ACPI support
  ACPI: scan: Add support for RISC-V in acpi_iommu_configure_id()
  ACPI: RISC-V: Add support for RIMT
  iommu/omap: Use int type to store negative error codes
  iommu/apple-dart: Clear stream error indicator bits for T8110 DARTs
  iommu/amd: Skip enabling command/event buffers for kdump
  crypto: ccp: Skip SEV and SNP INIT for kdump boot
  iommu/amd: Reuse device table for kdump
  iommu/amd: Add support to remap/unmap IOMMU buffers for kdump
  iommu/apple-dart: Add 4-level page table support
  iommu/io-pgtable-dart: Add 4-level page table support
  ...
 2025-10-03 18:00:11 -07:00
Albin Babu Varghese
3637d34b35 fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds 
Add bounds checking to prevent writes past framebuffer boundaries when
rendering text near screen edges. Return early if the Y position is off-screen
and clip image height to screen boundary. Break from the rendering loop if the
X position is off-screen. When clipping image width to fit the screen, update
the character count to match the clipped width to prevent buffer size
mismatches.

Without the character count update, bit_putcs_aligned and bit_putcs_unaligned
receive mismatched parameters where the buffer is allocated for the clipped
width but cnt reflects the original larger count, causing out-of-bounds writes.

Reported-by: syzbot+48b0652a95834717f190@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=48b0652a95834717f190
Suggested-by: Helge Deller <deller@gmx.de>
Tested-by: syzbot+48b0652a95834717f190@syzkaller.appspotmail.com
Signed-off-by: Albin Babu Varghese <albinbabuvarghese20@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
 2025-10-04 02:41:29 +02:00
Linus Torvalds
a498d59c46 dma-mapping updates for Linux 6.18: 
- refactoring of DMA mapping API to physical addresses as the primary
 interface instead of page+offset parameters; this gets much closer to
 Matthew Wilcox's long term wish for struct-pageless IO to cacheable DRAM and is
 supporting memdesc project which seeks to substantially transform how
 struct page works; an advantage of this approach is the possibility of
 introducing DMA_ATTR_MMIO, which covers existing 'dma_map_resource' flow
 in the common paths, what in turn lets to use recently introduced
 dma_iova_link() API to map PCI P2P MMIO without creating struct page;
 developped by Leon Romanovsky and Jason Gunthorpe
 - minor clean-up by Petr Tesarik and Qianfeng Rong
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Merge tag 'dma-mapping-6.18-2025-09-30' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux

Pull dma-mapping updates from Marek Szyprowski:

 - Refactoring of DMA mapping API to physical addresses as the primary
   interface instead of page+offset parameters

   This gets much closer to Matthew Wilcox's long term wish for
   struct-pageless IO to cacheable DRAM and is supporting memdesc
   project which seeks to substantially transform how struct page works.

   An advantage of this approach is the possibility of introducing
   DMA_ATTR_MMIO, which covers existing 'dma_map_resource' flow in the
   common paths, what in turn lets to use recently introduced
   dma_iova_link() API to map PCI P2P MMIO without creating struct page

   Developped by Leon Romanovsky and Jason Gunthorpe

 - Minor clean-up by Petr Tesarik and Qianfeng Rong

* tag 'dma-mapping-6.18-2025-09-30' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
  kmsan: fix missed kmsan_handle_dma() signature conversion
  mm/hmm: properly take MMIO path
  mm/hmm: migrate to physical address-based DMA mapping API
  dma-mapping: export new dma_*map_phys() interface
  xen: swiotlb: Open code map_resource callback
  dma-mapping: implement DMA_ATTR_MMIO for dma_(un)map_page_attrs()
  kmsan: convert kmsan_handle_dma to use physical addresses
  dma-mapping: convert dma_direct_*map_page to be phys_addr_t based
  iommu/dma: implement DMA_ATTR_MMIO for iommu_dma_(un)map_phys()
  iommu/dma: rename iommu_dma_*map_page to iommu_dma_*map_phys
  dma-mapping: rename trace_dma_*map_page to trace_dma_*map_phys
  dma-debug: refactor to use physical addresses for page mapping
  iommu/dma: implement DMA_ATTR_MMIO for dma_iova_link().
  dma-mapping: introduce new DMA attribute to indicate MMIO memory
  swiotlb: Remove redundant __GFP_NOWARN
  dma-direct: clean up the logic in __dma_direct_alloc_pages()
 2025-10-03 17:41:12 -07:00
Linus Torvalds
ee2fe81cdc It has been a relatively busy cycle in docsland, with changes all over: 
- Bring the kernel memory-model docs into the Sphinx build in the "literal
   include" mode.
 
 - Lots of build-infrastructure work, further cleaning up long-term
   kernel-doc technical debt.  The sphinx-pre-install tool has been
   converted to Python and updated for current systems.
 
 - A new tool to detect when documents have been moved and generate HTML
   redirects; this can be used on kernel.org (or any other site hosting the
   rendered docs) to avoid breaking links.
 
 - Automated processing of the YAML files describing the netlink protocol.
 
 - A significant update of the maintainer's PGP guide.
 
 ...and a seemingly endless series of typo fixes, build-problem fixes, etc.
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Merge tag 'docs-6.18' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "It has been a relatively busy cycle in docsland, with changes all
  over:

   - Bring the kernel memory-model docs into the Sphinx build in the
     "literal include" mode.

   - Lots of build-infrastructure work, further cleaning up long-term
     kernel-doc technical debt. The sphinx-pre-install tool has been
     converted to Python and updated for current systems.

   - A new tool to detect when documents have been moved and generate
     HTML redirects; this can be used on kernel.org (or any other site
     hosting the rendered docs) to avoid breaking links.

   - Automated processing of the YAML files describing the netlink
     protocol.

   - A significant update of the maintainer's PGP guide.

  ... and a seemingly endless series of typo fixes, build-problem fixes,
  etc"

* tag 'docs-6.18' of git://git.lwn.net/linux: (193 commits)
  Documentation/features: Update feature lists for 6.17-rc7
  docs: remove cdomain.py
  Documentation/process: submitting-patches: fix typo in "were do"
  docs: dev-tools/lkmm: Fix typo of missing file extension
  Documentation: trace: histogram: Convert ftrace docs cross-reference
  Documentation: trace: histogram-design: Wrap introductory note in note:: directive
  Documentation: trace: historgram-design: Separate sched_waking histogram section heading and the following diagram
  Documentation: trace: histogram-design: Trim trailing vertices in diagram explanation text
  Documentation: trace: histogram: Fix histogram trigger subsection number order
  docs: driver-api: fix spelling of "buses".
  Documentation: fbcon: Use admonition directives
  Documentation: fbcon: Reindent 8th step of attach/detach/unload
  Documentation: fbcon: Add boot options and attach/detach/unload section headings
  docs: filesystems: sysfs: add remaining top level sysfs directory descriptions
  docs: filesystems: sysfs: clarify symlink destinations in dev and bus/devices descriptions
  docs: filesystems: sysfs: remove top level sysfs net directory
  docs: maintainer: Fix ambiguous subheading formatting
  docs: kdoc: a few more dump_typedef() tweaks
  docs: kdoc: remove redundant comment stripping in dump_typedef()
  docs: kdoc: remove some dead code in dump_typedef()
  ...
 2025-10-03 17:16:13 -07:00
Wei Yang
c14bdcc9f2 mm/khugepaged: use KMEM_CACHE() 
We got some late review commits during review of commit b4c9ffb54b
("mm/khugepaged: remove definition of struct khugepaged_mm_slot").  No
need to keep the old cache name "khugepaged_mm_slot", let's simply use
KMEM_CACHE().

Link: https://lkml.kernel.org/r/20251001091900.20041-3-richard.weiyang@gmail.com
Fixes: b4c9ffb54b ("mm/khugepaged: remove definition of struct khugepaged_mm_slot")
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Raghavendra K T <raghavendra.kt@amd.com>
Cc: Kiryl Shutsemau <kirill@shutemov.name>
Cc: xu xin <xu.xin16@zte.com.cn>
Cc: SeongJae Park <sj@kernel.org>
Cc: Nico Pache <npache@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Kiryl Shutsemau <kas@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-10-03 16:42:44 -07:00
Wei Yang
df6879a748 mm/ksm: cleanup mm_slot_entry() invocation 
Patch series "mm_slot: following fixup for usage of mm_slot_entry()", v2.

We got some late review commits during review of "mm_slot: fix the usage of
mm_slot_entry()" in [1].


This patch (of 2):

We got some late review commits during review of commit 08498be43e
("mm/ksm: get mm_slot by mm_slot_entry() when slot is !NULL").  Let's
reduce the indentation level and make the code easier to follow by using
gotos to a new label.

Link: https://lkml.kernel.org/r/20251001091900.20041-1-richard.weiyang@gmail.com
Link: https://lkml.kernel.org/r/20251001091900.20041-2-richard.weiyang@gmail.com
Link: https://lkml.kernel.org/r/20250927004539.19308-1-richard.weiyang@gmail.com [1]
Fixes: 08498be43e ("mm/ksm: get mm_slot by mm_slot_entry() when slot is !NULL")
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Kiryl Shutsemau <kas@kernel.org>
Acked-by: Zi Yan <ziy@nvidia.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: xu xin <xu.xin16@zte.com.cn>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: Raghavendra K T <raghavendra.kt@amd.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Kiryl Shutsemau <kirill@shutemov.name>
Cc: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-10-03 16:42:44 -07:00
Anshuman Khandual
a089461a59 Documentation/mm: drop pxx_mkdevmap() descriptions from page table helpers 
Remove pxx_mkdevmap() descriptions, as these helper functions have already
been dropped (including DEBUG_VM_PGTABLE test) via the commit d438d27341
("mm: remove devmap related functions and page table bits").

Link: https://lkml.kernel.org/r/20250929120045.1109707-1-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Alistair Popple <apopple@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-10-03 16:42:44 -07:00
Lance Yang
89be2815f4 mm: clean up is_guard_pte_marker() 
Let's simplify the implementation. The current code is redundant as it
effectively expands to:

  is_swap_pte(pte) &&
  is_pte_marker_entry(...) && // from is_pte_marker()
  is_pte_marker_entry(...)    // from is_guard_swp_entry()

While a modern compiler could likely optimize this away, let's have clean
code and not rely on it.

Link: https://lkml.kernel.org/r/20250924045830.3817-1-lance.yang@linux.dev
Signed-off-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: Mika Penttilä <mpenttil@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-10-03 16:42:43 -07:00
Hannes Reinecke
0a947c14e4 drivers/base: move memory_block_add_nid() into the caller 
Now the node id only needs to be set for early memory, so move
memory_block_add_nid() into the caller and rename it into
memory_block_add_nid_early().  This allows us to further simplify the code
by dropping the 'context' argument to
do_register_memory_block_under_node().

Link: https://lkml.kernel.org/r/20250729064637.51662-4-hare@kernel.org
Suggested-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Donet Tom <donettom@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-10-03 16:42:43 -07:00
Hannes Reinecke
b8179af120 mm/memory_hotplug: activate node before adding new memory blocks 
The sysfs attributes for memory blocks require the node ID to be set and
initialized, so move the node activation before adding new memory blocks. 
This also has the nice side effect that the BUG_ON() can be converted into
a WARN_ON() as we now can handle registration errors.

Link: https://lkml.kernel.org/r/20250729064637.51662-3-hare@kernel.org
Fixes: b9ff036082 ("mm/memory_hotplug.c: make add_memory_resource use __try_online_node")
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Donet Tom <donettom@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-10-03 16:42:43 -07:00
Hannes Reinecke
c6a809363a drivers/base/memory: add node id parameter to add_memory_block() 
Patch series "mm/memory_hotplug: fixup crash during uevent handling", v4.

we have some udev rules trying to read the sysfs attribute 'valid_zones'
during an memory 'add' event, causing a crash in zone_for_pfn_range(). 
Debugging found that mem->nid was set to NUMA_NO_NODE, which crashed in
NODE_DATA(nid).  Further analysis revealed that we're running into a race
with udev event processing: add_memory_resource() has this function calls:

1) __try_online_node()
2) arch_add_memory()
3) create_memory_block_devices()
  -> calls device_register() -> memory 'add' event
4) node_set_online()/__register_one_node()
  -> calls device_register() -> node 'add' event
5) register_memory_blocks_under_node()
  -> sets mem->nid

Which, to the uninitated, is ... weird ...

Why do we try to online the node in 1), but only register the node in 4)
_after_ we have created the memory blocks in 3) ?  And why do we set the
'nid' value in 5), when the uevent (which might need to see the correct
'nid' value) is sent out in 3) ?  There must be a reason, I'm sure ...

So here's a small patchset to fixup uevent ordering.  The first patch adds
a 'nid' parameter to add_memory_blocks() (to avoid mem->nid being
initialized with NUMA_NO_NODE), and the second patch reshuffles the code
in add_memory_resource() to fully initialize the node prior to calling
create_memory_block_devices() so that the node is valid at that time and
uevent processing will see correct values in sysfs.


This patch (of 3):

We have some udev rules trying to read the sysfs attribute 'valid_zones'
during an memory 'add' event, causing a crash in zone_for_pfn_range(). 
Debugging found that mem->nid was set to NUMA_NO_NODE, which crashed in
NODE_DATA(nid).  Further analysis revealed that we're running into a race
with udev event processing: add_memory_resource() has this function calls:

1) __try_online_node()
2) arch_add_memory()
3) create_memory_block_devices()
  -> calls device_register() -> memory 'add' event
4) node_set_online()/__register_one_node()
  -> calls device_register() -> node 'add' event
5) register_memory_blocks_under_node()
  -> sets mem->nid

Which, to the uninitated, is ... weird ...

Why do we try to online the node in 1), but only register the node in 4)
_after_ we have created the memory blocks in 3) ?  And why do we set the
'nid' value in 5), when the uevent (which might need to see the correct
'nid' value) is sent out in 3) ?  There must be a reason, I'm sure ...

So here's a small patchset to fixup uevent ordering.  The first patch adds
a 'nid' parameter to add_memory_blocks() (to avoid mem->nid being
initialized with NUMA_NO_NODE), and the second patch reshuffles the code
in add_memory_resource() to fully initialize the node prior to calling
create_memory_block_devices() so that the node is valid at that time and
uevent processing will see correct values in sysfs.


This patch (of 3):

Add a 'nid' parameter to add_memory_block() to initialize the memory block
with the correct node id.

Link: https://lkml.kernel.org/r/20250729064637.51662-1-hare@kernel.org
Link: https://lkml.kernel.org/r/20250729064637.51662-2-hare@kernel.org
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Donet Tom <donettom@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-10-03 16:42:43 -07:00
Linus Torvalds
50647a1176 file->f_path constification 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-f_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull file->f_path constification from Al Viro:
 "Only one thing was modifying ->f_path of an opened file - acct(2).

  Massaging that away and constifying a bunch of struct path * arguments
  in functions that might be given &file->f_path ends up with the
  situation where we can turn ->f_path into an anon union of const
  struct path f_path and struct path __f_path, the latter modified only
  in a few places in fs/{file_table,open,namei}.c, all for struct file
  instances that are yet to be opened"

* tag 'pull-f_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (23 commits)
  Have cc(1) catch attempts to modify ->f_path
  kernel/acct.c: saner struct file treatment
  configfs:get_target() - release path as soon as we grab configfs_item reference
  apparmor/af_unix: constify struct path * arguments
  ovl_is_real_file: constify realpath argument
  ovl_sync_file(): constify path argument
  ovl_lower_dir(): constify path argument
  ovl_get_verity_digest(): constify path argument
  ovl_validate_verity(): constify {meta,data}path arguments
  ovl_ensure_verity_loaded(): constify datapath argument
  ksmbd_vfs_set_init_posix_acl(): constify path argument
  ksmbd_vfs_inherit_posix_acl(): constify path argument
  ksmbd_vfs_kern_path_unlock(): constify path argument
  ksmbd_vfs_path_lookup_locked(): root_share_path can be const struct path *
  check_export(): constify path argument
  export_operations->open(): constify path argument
  rqst_exp_get_by_name(): constify path argument
  nfs: constify path argument of __vfs_getattr()
  bpf...d_path(): constify path argument
  done_path_create(): constify path argument
  ...
 2025-10-03 16:32:36 -07:00
Ian Rogers
a22d167ed8 perf parse-events: Fix parsing of >30kb event strings 
Metrics may generate many particularly uncore event references. The
resulting event string may then be >32kb. The parse events lex is
using "%option reject" which stores backtracking state in a buffer
sized at roughtly 30kb. If the event string is larger than this then a
buffer overflow and typically a crash happens.

The need for "%option reject" was for BPF events which were removed in
commit 3d6dfae889 ("perf parse-events: Remove BPF event
support"). As "%option reject" is both a memory and performance cost
let's remove it and fix the parsing case for event strings being over
~30kb.

Whilst cleaning up "%option reject" make the header files accurately
reflect functions used in the code and tidy up not requiring yywrap.

Measuring on the "PMU JSON event tests" a modest reduction of 0.41%
user time and 0.27% max resident size was observed. More importantly
this change fixes parsing large metrics and event strings.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2025-10-03 19:06:19 -03:00
Gopi Krishna Menon
7e8f305a08 docs/zh_CN: Fix malformed table 
Running "make htmldocs" generates the following build error
in zh_CN/cpu-freq/cpu-drivers.rst:

Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst:109: ERROR: Malformed table.

Fix the table formatting to resolve the error.

Signed-off-by: Gopi Krishna Menon <krishnagopi487@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 2025-10-03 23:24:55 +02:00
Gopi Krishna Menon
989ed3cad2 docs/zh_TW: Fix malformed table 
Running "make htmldocs" generate the following build error
in zh_TW/cpu-freq/cpu-drivers.rst:

Documentation/translations/zh_TW/cpu-freq/cpu-drivers.rst:109: ERROR: Malformed table.

Fix the table formatting to resolve the error.

Signed-off-by: Gopi Krishna Menon <krishnagopi487@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 2025-10-03 23:24:50 +02:00
Linus Torvalds
070a542f08 NFS Client Updates for Linux 6.18 
New Features:
  * Add a Kconfig option to redirect dfprintk() to the trace buffer
  * Enable use of the RWF_DONTCACHE flag on the NFS client
  * Add striped layout handling to pNFS flexfiles
  * Add proper localio handling for READ and WRITE O_DIRECT
 
 Bugfixes:
  * Handle NFS4ERR_GRACE errors during delegation recall
  * Fix NFSv4.1 backchannel max_resp_sz verification check
  * Fix mount hang after CREATE_SESSION failure
  * Fix d_parent->d_inode locking in nfs4_setup_readdir()
 
 Other Cleanups and Improvements:
  * Improvements to write handling tracepoints
  * Fix a few trivial spelling mistakes
  * Cleanups to the rpcbind cleanup call sites
  * Convert the SUNRPC xdr_buf to use a scratch folio instead of scratch page
  * Remove unused NFS_WBACK_BUSY() macro
  * Remove __GFP_NOWARN flags
  * Unexport rpc_malloc() and rpc_free()
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Merge tag 'nfs-for-6.18-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client updates from Anna Schumaker:
 "New Features:
   - Add a Kconfig option to redirect dfprintk() to the trace buffer
   - Enable use of the RWF_DONTCACHE flag on the NFS client
   - Add striped layout handling to pNFS flexfiles
   - Add proper localio handling for READ and WRITE O_DIRECT

  Bugfixes:
   - Handle NFS4ERR_GRACE errors during delegation recall
   - Fix NFSv4.1 backchannel max_resp_sz verification check
   - Fix mount hang after CREATE_SESSION failure
   - Fix d_parent->d_inode locking in nfs4_setup_readdir()

  Other Cleanups and Improvements:
   - Improvements to write handling tracepoints
   - Fix a few trivial spelling mistakes
   - Cleanups to the rpcbind cleanup call sites
   - Convert the SUNRPC xdr_buf to use a scratch folio instead of
     scratch page
   - Remove unused NFS_WBACK_BUSY() macro
   - Remove __GFP_NOWARN flags
   - Unexport rpc_malloc() and rpc_free()"

* tag 'nfs-for-6.18-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (46 commits)
  NFS: add basic STATX_DIOALIGN and STATX_DIO_READ_ALIGN support
  nfs/localio: add tracepoints for misaligned DIO READ and WRITE support
  nfs/localio: add proper O_DIRECT support for READ and WRITE
  nfs/localio: refactor iocb initialization
  nfs/localio: refactor iocb and iov_iter_bvec initialization
  nfs/localio: avoid issuing misaligned IO using O_DIRECT
  nfs/localio: make trace_nfs_local_open_fh more useful
  NFSD: filecache: add STATX_DIOALIGN and STATX_DIO_READ_ALIGN support
  sunrpc: unexport rpc_malloc() and rpc_free()
  NFSv4/flexfiles: Add support for striped layouts
  NFSv4/flexfiles: Update layout stats & error paths for striped layouts
  NFSv4/flexfiles: Write path updates for striped layouts
  NFSv4/flexfiles: Commit path updates for striped layouts
  NFSv4/flexfiles: Read path updates for striped layouts
  NFSv4/flexfiles: Update low level helper functions to be DS stripe aware.
  NFSv4/flexfiles: Add data structure support for striped layouts
  NFSv4/flexfiles: Use ds_commit_idx when marking a write commit
  NFSv4/flexfiles: Remove cred local variable dependency
  nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing
  NFS: Enable use of the RWF_DONTCACHE flag on the NFS client
  ...
 2025-10-03 14:20:40 -07:00
Linus Torvalds
63e62baaa7 16 smb3 client fixes 
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Merge tag '6.18-rc-part1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client updates from Steve French:

 - Fix oops in crypt message

 - Remove duplicate arc4 code

 - Fix potential io_uring reconnect

 - Two important directory leases fixes and three perf improvements

 - Three minor cleanups

 - Four debug improvements (e.g. for showing more information on leases,
   and one for adding more helpful information on reconnect)

* tag '6.18-rc-part1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: client: force multichannel=off when max_channels=1
  smb client: fix bug with newly created file in cached dir
  smb: client: short-circuit negative lookups when parent dir is fully cached
  smb: client: short-circuit in open_cached_dir_by_dentry() if !dentry
  smb: client: remove pointless cfid->has_lease check
  smb: client: transport: minor indentation style fix
  smb: client: transport: avoid reconnects triggered by pending task work
  smb: client: remove unused fid_lock
  smb: client: update cfid->last_access_time in open_cached_dir_by_dentry()
  smb: client: ensure open_cached_dir_by_dentry() only returns valid cfid
  smb: client: account smb directory cache usage and per-tcon totals
  smb: client: add drop_dir_cache module parameter to invalidate cached dirents
  smb: client: show lease state as R/H/W (or NONE) in open_files
  smb: client: fix crypto buffers in non-linear memory
  smb: Use arc4 library instead of duplicate arc4 code
  smb: client: add tcon information to smb2_reconnect() debug messages
 2025-10-03 14:13:23 -07:00
Linus Torvalds
b3fee71e66 nine ksmbd server fixes 
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Merge tag 'v6.18rc1-part1-ksmbd-server-fixes' of git://git.samba.org/ksmbd

Pull smb server fixes from Steve French:

 - Fix potential UAFs and corruptions in rpc open and close

 - Fix copy_file_range when ranges overlap

 - Improve session, share, connection lookup performance

 - Fix potential hash collisions in share and session lists

 - Debugging improvement - making per-connection threads easier to
   identify

 - Improve socket creation

 - Fix return code mapping for posix query fs info

 - Add support for limiting the maximum number of connections per IP
   address, extending the existing connection limiting mechanism to
   enforce per-IP connection limits alongside the global connection
   limit

* tag 'v6.18rc1-part1-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: increase session and share hash table bits
  ksmbd: replace connection list with hash table
  ksmbd: add an error print when maximum IP connections limit is reached
  ksmbd: add max ip connections parameter
  ksmbd: fix error code overwriting in smb2_get_info_filesystem()
  ksmbd: copy overlapped range within the same file
  ksmbd: use sock_create_kern interface to create kernel socket
  ksmbd: make ksmbd thread names distinct by client IP
  ksmbd: Fix race condition in RPC handle list access
 2025-10-03 14:09:59 -07:00
Linus Torvalds
86d563ac5f f2fs-for-6.18-rc1 
This release focuses on two primary updates for Android devices. First, it sets
 hash-based file name lookup as the default method to improve performance, while
 retaining an option to fall back to a linear lookup. Second, it resolves a
 persistent issue with the checkpoint=enable feature. The update further boosts
 performance by prefetching node blocks, merging FUA writes more efficiently, and
 optimizing block allocation policies.
 
 The release is rounded out by a comprehensive set of bug fixes that address
 memory safety, data integrity, and potential system hangs, along with minor
 documentation and code clean-ups.
 
 Enhancement:
  - add mount option and sysfs entry to tune the lookup mode
  - dump more information and add a timeout when enabling/disabling checkpoints
  - readahead node blocks in F2FS_GET_BLOCK_PRECACHE mode
  - merge FUA command with the existing writes
  - allocate HOT_DATA for IPU writes
  - Use allocate_section_policy to control write priority in multi-devices setups
  - add reserved nodes for privileged users
  - Add bggc_io_aware to adjust the priority of BG_GC when issuing IO
  - show the list of donation files
 
 Bug fix:
  - add missing dput() when printing the donation list
  - fix UAF issue in f2fs_merge_page_bio()
  - add sanity check on ei.len in __update_extent_tree_range()
  - fix infinite loop in __insert_extent_tree()
  - fix zero-sized extent for precache extents
  - fix to mitigate overhead of f2fs_zero_post_eof_page()
  - fix to avoid migrating empty section
  - fix to truncate first page in error path of f2fs_truncate()
  - fix to update map->m_next_extent correctly in f2fs_map_blocks()
  - fix wrong layout information on 16KB page
  - fix to do sanity check on node footer for non inode dnode
  - fix to avoid NULL pointer dereference in f2fs_check_quota_consistency()
  - fix to detect potential corrupted nid in free_nid_list
  - fix to clear unusable_cap for checkpoint=enable
  - fix to zero data after EOF for compressed file correctly
  - fix to avoid overflow while left shift operation
  - fix condition in __allow_reserved_blocks()
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Merge tag 'f2fs-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "This focuses on two primary updates for Android devices.

  First, it sets hash-based file name lookup as the default method to
  improve performance, while retaining an option to fall back to a
  linear lookup.

  Second, it resolves a persistent issue with the 'checkpoint=enable'
  feature.

  The update further boosts performance by prefetching node blocks,
  merging FUA writes more efficiently, and optimizing block allocation
  policies.

  The release is rounded out by a comprehensive set of bug fixes that
  address memory safety, data integrity, and potential system hangs,
  along with minor documentation and code clean-ups.

  Enhancements:
   - add mount option and sysfs entry to tune the lookup mode
   - dump more information and add a timeout when enabling/disabling
     checkpoints
   - readahead node blocks in F2FS_GET_BLOCK_PRECACHE mode
   - merge FUA command with the existing writes
   - allocate HOT_DATA for IPU writes
   - Use allocate_section_policy to control write priority in
     multi-devices setups
   - add reserved nodes for privileged users
   - Add bggc_io_aware to adjust the priority of BG_GC when issuing IO
   - show the list of donation files

  Bug fixes:
   - add missing dput() when printing the donation list
   - fix UAF issue in f2fs_merge_page_bio()
   - add sanity check on ei.len in __update_extent_tree_range()
   - fix infinite loop in __insert_extent_tree()
   - fix zero-sized extent for precache extents
   - fix to mitigate overhead of f2fs_zero_post_eof_page()
   - fix to avoid migrating empty section
   - fix to truncate first page in error path of f2fs_truncate()
   - fix to update map->m_next_extent correctly in f2fs_map_blocks()
   - fix wrong layout information on 16KB page
   - fix to do sanity check on node footer for non inode dnode
   - fix to avoid NULL pointer dereference in
     f2fs_check_quota_consistency()
   - fix to detect potential corrupted nid in free_nid_list
   - fix to clear unusable_cap for checkpoint=enable
   - fix to zero data after EOF for compressed file correctly
   - fix to avoid overflow while left shift operation
   - fix condition in __allow_reserved_blocks()"

* tag 'f2fs-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (43 commits)
  f2fs: add missing dput() when printing the donation list
  f2fs: fix UAF issue in f2fs_merge_page_bio()
  f2fs: readahead node blocks in F2FS_GET_BLOCK_PRECACHE mode
  f2fs: add sanity check on ei.len in __update_extent_tree_range()
  f2fs: fix infinite loop in __insert_extent_tree()
  f2fs: fix zero-sized extent for precache extents
  f2fs: fix to mitigate overhead of f2fs_zero_post_eof_page()
  f2fs: fix to avoid migrating empty section
  f2fs: fix to truncate first page in error path of f2fs_truncate()
  f2fs: fix to update map->m_next_extent correctly in f2fs_map_blocks()
  f2fs: fix wrong layout information on 16KB page
  f2fs: clean up error handing of f2fs_submit_page_read()
  f2fs: avoid unnecessary folio_clear_uptodate() for cleanup
  f2fs: merge FUA command with the existing writes
  f2fs: allocate HOT_DATA for IPU writes
  f2fs: Use allocate_section_policy to control write priority in multi-devices setups
  Documentation: f2fs: Reword title
  Documentation: f2fs: Indent compression_mode option list
  Documentation: f2fs: Wrap snippets in literal code blocks
  Documentation: f2fs: Span write hint table section rows
  ...
 2025-10-03 14:05:12 -07:00
Linus Torvalds
f0712c2038 Description for this pull request: 
- Add support for FS_IOC_{GET,SET}FSLABEL ioctl.
  - Two small clean-up patches.
  - Optimizes allocation bitmap loading time on large partitions
    with small cluster sizes.
  - Allow changes for discard, zero_size_dir, and errors options
    via remount.
  - Validate that the clusters used for the allocation bitmap are
    correctly marked as in-use during mount, preventing potential
    data corruption from reallocating the bitmap's own space.
  - Uses ratelimit to avoid too many error prints on I/O error path.
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Merge tag 'exfat-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat

Pull exfat updates from Namjae Jeon:

 - Add support for FS_IOC_{GET,SET}FSLABEL ioctl

 - Two small clean-up patches

 - Optimizes allocation bitmap loading time on large partitions with
   small cluster sizes

 - Allow changes for discard, zero_size_dir, and errors options via
   remount

 - Validate that the clusters used for the allocation bitmap are
   correctly marked as in-use during mount, preventing potential data
   corruption from reallocating the bitmap's own space

 - Uses ratelimit to avoid too many error prints on I/O error path

* tag 'exfat-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
  exfat: Add support for FS_IOC_{GET,SET}FSLABEL
  exfat: combine iocharset and utf8 option setup
  exfat: support modifying mount options via remount
  exfat: optimize allocation bitmap loading time
  exfat: Remove unnecessary parentheses
  exfat: drop redundant conversion to bool
  exfat: validate cluster allocation bits of the allocation bitmap
  exfat: limit log print for IO error
 2025-10-03 14:02:53 -07:00
Linus Torvalds
f2327dc851 orangefs: Two cleanups and a bug fix. 
Remove unused type in macro fill_default_sys_attrs
   Zhen Ni <zhen.ni@easystack.cn>
 
 Replace kzalloc + copy_from_user with memdup_user_nul
   Thorsten Blum <thorsten.blum@linux.dev>
 
 fix xattr related buffer overflow...
   A message was forwarded to me from Disclosure <disclosure@aisle.com>
   indicating a problem with a loop condition in our xattr code. When I
   fixed the problem it exposed a related memory leak problem, and I
   fixed that too.
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Merge tag 'for-linus-6.18-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux

Pull orangefs updates from Mike Marshall:
 "Two cleanups and a bug fix:

   - Remove unused type in macro fill_default_sys_attrs (Zhen Ni)

   - Replace kzalloc + copy_from_user with memdup_user_nul (Thorsten Blum)

   - Fix xattr related buffer overflow...

     A message was forwarded to me from Disclosure <disclosure@aisle.com>
     indicating a problem with a loop condition in our xattr code. When
     I fixed the problem it exposed a related memory leak problem, and I
     fixed that too"

* tag 'for-linus-6.18-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  fs/orangefs: Replace kzalloc + copy_from_user with memdup_user_nul
  orangefs: fix xattr related buffer overflow...
  orangefs: Remove unused type in macro fill_default_sys_attrs
 2025-10-03 13:59:56 -07:00
Linus Torvalds
a9b38767c6 Changes for 6.18-rc1 
Added:
     support for FS_IOC_{GET,SET}FSLABEL ioctl
     reject index allocation if $BITMAP is empty but blocks exist
 
 Fixed:
     integer overflow in run_unpack()
     resource leak bug in wnd_extend()
 
 Changed:
     pretend $Extend records as regular files
     stop using write_cache_pages
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Merge tag 'ntfs3_for_6.18' of https://github.com/Paragon-Software-Group/linux-ntfs3

Pull ntfs3 updates from Konstantin Komarov:
 "Added:
   - support for FS_IOC_{GET,SET}FSLABEL ioctl
   - reject index allocation if $BITMAP is empty but blocks exist

  Fixed:
   - integer overflow in run_unpack()
   - resource leak bug in wnd_extend()

  Changed:
   - pretend $Extend records as regular files
   - stop using write_cache_pages"

* tag 'ntfs3_for_6.18' of https://github.com/Paragon-Software-Group/linux-ntfs3:
  ntfs3: stop using write_cache_pages
  fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist
  fs/ntfs3: Fix a resource leak bug in wnd_extend()
  fs: ntfs3: Fix integer overflow in run_unpack()
  ntfs3: pretend $Extend records as regular files
  ntfs3: add FS_IOC_SETFSLABEL ioctl
  ntfs3: add FS_IOC_GETFSLABEL ioctl
  ntfs3: transition magic number to shared constant
 2025-10-03 13:57:33 -07:00
Linus Torvalds
5cb08b62fb A few fixes and cleanups for JFS. 
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Merge tag 'jfs-6.18' of github.com:kleikamp/linux-shaggy

Pull jfs updates from Dave Kleikamp:
 "A few fixes and cleanups for JFS"

* tag 'jfs-6.18' of github.com:kleikamp/linux-shaggy:
  jfs: replace hardcoded magic number with DTPAGEMAXSLOT constant
  JFS: Remove redundant 0 value initialization
  JFS: Remove unnecessary parentheses
  jfs: fix uninitialized waitqueue in transaction manager
  jfs: Verify inode mode when loading from disk
 2025-10-03 13:54:23 -07:00