linux/Documentation
Linus Torvalds a3ebb59eee VFIO updates for v6.19-rc1
- Move libvfio selftest artifacts in preparation of more tightly
    coupled integration with KVM selftests. (David Matlack)
 
  - Fix comment typo in mtty driver. (Chu Guangqing)
 
  - Support for new hardware revision in the hisi_acc vfio-pci variant
    driver where the migration registers can now be accessed via the PF.
    When enabled for this support, the full BAR can be exposed to the
    user. (Longfang Liu)
 
  - Fix vfio cdev support for VF token passing, using the correct size
    for the kernel structure, thereby actually allowing userspace to
    provide a non-zero UUID token.  Also set the match token callback for
    the hisi_acc, fixing VF token support for this this vfio-pci variant
    driver. (Raghavendra Rao Ananta)
 
  - Introduce internal callbacks on vfio devices to simplify and
    consolidate duplicate code for generating VFIO_DEVICE_GET_REGION_INFO
    data, removing various ioctl intercepts with a more structured
    solution. (Jason Gunthorpe)
 
  - Introduce dma-buf support for vfio-pci devices, allowing MMIO regions
    to be exposed through dma-buf objects with lifecycle managed through
    move operations.  This enables low-level interactions such as a
    vfio-pci based SPDK drivers interacting directly with dma-buf capable
    RDMA devices to enable peer-to-peer operations.  IOMMUFD is also now
    able to build upon this support to fill a long standing feature gap
    versus the legacy vfio type1 IOMMU backend with an implementation of
    P2P support for VM use cases that better manages the lifecycle of the
    P2P mapping. (Leon Romanovsky, Jason Gunthorpe, Vivek Kasireddy)
 
  - Convert eventfd triggering for error and request signals to use RCU
    mechanisms in order to avoid a 3-way lockdep reported deadlock issue.
    (Alex Williamson)
 
  - Fix a 32-bit overflow introduced via dma-buf support manifesting with
    large DMA buffers. (Alex Mastro)
 
  - Convert nvgrace-gpu vfio-pci variant driver to insert mappings on
    fault rather than at mmap time.  This conversion serves both to make
    use of huge PFNMAPs but also to both avoid corrected RAS events
    during reset by now being subject to vfio-pci-core's use of
    unmap_mapping_range(), and to enable a device readiness test after
    reset. (Ankit Agrawal)
 
  - Refactoring of vfio selftests to support multi-device tests and split
    code to provide better separation between IOMMU and device objects.
    This work also enables a new test suite addition to measure parallel
    device initialization latency. (David Matlack)
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Merge tag 'vfio-v6.19-rc1' of https://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Move libvfio selftest artifacts in preparation of more tightly
   coupled integration with KVM selftests (David Matlack)

 - Fix comment typo in mtty driver (Chu Guangqing)

 - Support for new hardware revision in the hisi_acc vfio-pci variant
   driver where the migration registers can now be accessed via the PF.
   When enabled for this support, the full BAR can be exposed to the
   user (Longfang Liu)

 - Fix vfio cdev support for VF token passing, using the correct size
   for the kernel structure, thereby actually allowing userspace to
   provide a non-zero UUID token. Also set the match token callback for
   the hisi_acc, fixing VF token support for this this vfio-pci variant
   driver (Raghavendra Rao Ananta)

 - Introduce internal callbacks on vfio devices to simplify and
   consolidate duplicate code for generating VFIO_DEVICE_GET_REGION_INFO
   data, removing various ioctl intercepts with a more structured
   solution (Jason Gunthorpe)

 - Introduce dma-buf support for vfio-pci devices, allowing MMIO regions
   to be exposed through dma-buf objects with lifecycle managed through
   move operations. This enables low-level interactions such as a
   vfio-pci based SPDK drivers interacting directly with dma-buf capable
   RDMA devices to enable peer-to-peer operations. IOMMUFD is also now
   able to build upon this support to fill a long standing feature gap
   versus the legacy vfio type1 IOMMU backend with an implementation of
   P2P support for VM use cases that better manages the lifecycle of the
   P2P mapping (Leon Romanovsky, Jason Gunthorpe, Vivek Kasireddy)

 - Convert eventfd triggering for error and request signals to use RCU
   mechanisms in order to avoid a 3-way lockdep reported deadlock issue
   (Alex Williamson)

 - Fix a 32-bit overflow introduced via dma-buf support manifesting with
   large DMA buffers (Alex Mastro)

 - Convert nvgrace-gpu vfio-pci variant driver to insert mappings on
   fault rather than at mmap time. This conversion serves both to make
   use of huge PFNMAPs but also to both avoid corrected RAS events
   during reset by now being subject to vfio-pci-core's use of
   unmap_mapping_range(), and to enable a device readiness test after
   reset (Ankit Agrawal)

 - Refactoring of vfio selftests to support multi-device tests and split
   code to provide better separation between IOMMU and device objects.
   This work also enables a new test suite addition to measure parallel
   device initialization latency (David Matlack)

* tag 'vfio-v6.19-rc1' of https://github.com/awilliam/linux-vfio: (65 commits)
  vfio: selftests: Add vfio_pci_device_init_perf_test
  vfio: selftests: Eliminate INVALID_IOVA
  vfio: selftests: Split libvfio.h into separate header files
  vfio: selftests: Move vfio_selftests_*() helpers into libvfio.c
  vfio: selftests: Rename vfio_util.h to libvfio.h
  vfio: selftests: Stop passing device for IOMMU operations
  vfio: selftests: Move IOVA allocator into iova_allocator.c
  vfio: selftests: Move IOMMU library code into iommu.c
  vfio: selftests: Rename struct vfio_dma_region to dma_region
  vfio: selftests: Upgrade driver logging to dev_err()
  vfio: selftests: Prefix logs with device BDF where relevant
  vfio: selftests: Eliminate overly chatty logging
  vfio: selftests: Support multiple devices in the same container/iommufd
  vfio: selftests: Introduce struct iommu
  vfio: selftests: Rename struct vfio_iommu_mode to iommu_mode
  vfio: selftests: Allow passing multiple BDFs on the command line
  vfio: selftests: Split run.sh into separate scripts
  vfio: selftests: Move run.sh into scripts directory
  vfio/nvgrace-gpu: wait for the GPU mem to be ready
  vfio/nvgrace-gpu: Inform devmem unmapped after reset
  ...
2025-12-04 18:42:48 -08:00
..
ABI cxl for v6.19 2025-12-04 17:55:18 -08:00
accel accel/qaic: Separate DBC_STATE_* definition list 2025-11-10 14:50:06 -07:00
accounting Documentation: taskstats: Reindent payload kinds list 2025-11-10 12:52:12 -07:00
admin-guide MFD for v6.19 2025-12-04 15:18:33 -08:00
arch This has been another busy cycle for documentation, with a lot of 2025-12-03 11:34:28 -08:00
block
bpf docs: bpf: map_array: Specify BPF_MAP_TYPE_PERCPU_ARRAY value size limit 2025-11-25 14:32:00 -08:00
cdrom
core-api printk changes for 6.19 2025-12-03 12:42:36 -08:00
cpu-freq cpufreq: Drop unused symbol CPUFREQ_ETERNAL 2025-10-01 13:57:22 +02:00
crypto This update includes the following changes: 2025-12-03 11:28:38 -08:00
dev-tools linux_kselftest-kunit-6.19-rc1 2025-12-03 15:50:11 -08:00
devicetree IOMMU Updates for Linux v6.19 2025-12-04 18:05:06 -08:00
doc-guide docs: parse-headers.rst: Fix a typo 2025-11-18 09:13:40 -07:00
driver-api VFIO updates for v6.19-rc1 2025-12-04 18:42:48 -08:00
edac
fault-injection
fb fbdev fixes & enhancements for 6.18-rc1: 2025-10-10 09:36:23 -07:00
features docs: Move the "features" tools to tools/docs 2025-10-28 16:01:00 -06:00
filesystems New features and improvements for the ext4 file system 2025-12-03 20:37:15 -08:00
firmware-guide Documentation: ACPI: i2c-muxes: fix I2C device references 2025-11-03 17:01:05 +01:00
firmware_class
fpga
gpu Extra drm-misc-next for v6.19-rc1: 2025-12-02 18:09:08 +10:00
hid Documentation: hid-alps: Format DataByte* subsection headings 2025-11-18 17:53:10 +01:00
hwmon hwmon: (asus-ec-sensors) add ROG STRIX X470-I GAMING 2025-11-21 11:19:46 -08:00
i2c i2c: i801: Add support for Intel Wildcat Lake-U 2025-09-28 00:45:53 +02:00
iio
images
infiniband
input Input: rename INPUT_PROP_HAPTIC_TOUCHPAD to INPUT_PROP_PRESSUREPAD 2025-11-17 23:18:32 -08:00
isdn
kbuild kbuild: doc: improve KBUILD_BUILD_TIMESTAMP documentation 2025-11-08 12:17:58 +01:00
kernel-hacking
leds leds: lp55xx_common: Enable use without FW_LOADER_USER_HELPER 2025-10-21 10:46:30 +01:00
litmus-tests
livepatch
locking documentation: seqlock: fix the wrong documentation of read_seqbegin_or_lock/need_seqretry 2025-10-21 12:31:56 +02:00
maintainer docs: maintainer: Fix ambiguous subheading formatting 2025-09-18 10:26:45 -06:00
mhi
misc-devices Documentation: tps6594-pfsm: Fix macro cross-reference syntax 2025-11-10 12:54:49 -07:00
mm Documentation: treewide: Replace marc.info links with lore 2025-11-03 16:21:31 -07:00
netlabel
netlink Networking changes for 6.19. 2025-12-03 17:24:33 -08:00
networking Documentation: net: dsa: mention simple HSR offload helpers 2025-12-01 16:51:55 -08:00
nvdimm
nvme
PCI Documentation: PCI: Amend error recovery doc with pci_save_state() rules 2025-11-24 16:59:10 -06:00
pcmcia
peci
power power supply and reset changes for the 6.19 series 2025-12-04 16:12:03 -08:00
process docs: submitting-patches: Clarify that removal of Acks needs explanation too 2025-11-29 08:30:54 -07:00
RCU doc: Update for SRCU-fast definitions and initialization 2025-11-05 23:58:30 +01:00
rust docs: rust: quick-start: add Debian 13 (Trixie) 2025-11-04 20:21:15 +01:00
scheduler
scsi
security docs: trusted-encrypted: fix htmldocs build error 2025-10-21 11:58:29 +08:00
sound ASoC: doc: cs35l56: Update firmware filename description for B0 silicon 2025-11-03 13:09:14 +00:00
sphinx Documentation/sphinx/kernel_feat.py: use class directly 2025-11-21 10:32:30 -07:00
sphinx-static
spi
staging It has been a relatively busy cycle in docsland, with changes all over: 2025-10-03 17:16:13 -07:00
sunrpc/xdr
target
tee Documentation: tee: Add Qualcomm TEE driver 2025-09-15 17:34:06 +02:00
timers
tools Documentation/rtla: Include defaults for tracer options 2025-11-05 11:19:24 -07:00
trace Documentation/trace: Specify exact priority for timerlat 2025-11-05 11:19:20 -07:00
translations docs/zh_CN: Add wd719x.rst translation 2025-11-26 14:40:12 +08:00
usb
userspace-api drm-next for 6.19-rc1: 2025-12-04 08:53:30 -08:00
virt KVM x86 fixes for 6.18: 2025-10-18 10:25:43 +02:00
w1 docs: w1: fix w1-netlink invalid URL 2025-11-05 11:23:39 -07:00
watchdog
wmi platform/x86: msi-wmi-platform: Fix typo in WMI GUID 2025-11-10 19:13:29 +02:00
.gitignore
.renames.txt
atomic_bitops.txt
atomic_t.txt
Changes
CodingStyle
conf.py docs: conf.py: get rid of load_config.py 2025-09-21 16:40:37 -06:00
docutils.conf
index.rst
Kconfig docs: move get_abi.py to tools/docs 2025-10-28 16:01:20 -06:00
Makefile docs: makefile: move rustdoc check to the build wrapper 2025-11-29 08:42:53 -07:00
memory-barriers.txt memory-barriers.txt: Sort wait_event* and wait_on_bit* list alphabetically 2025-11-08 19:02:26 -08:00
SubmittingPatches
subsystem-apis.rst