kernel.git/drivers/vfio/pci/pds, branch master

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-22T04:03:00Z

This converts some of the visually simpler cases that have been split over multiple lines. I only did the ones that are easy to verify the resulting diff by having just that final GFP_KERNEL argument on the next line. Somebody should probably do a proper coccinelle script for this, but for me the trivial script actually resulted in an assertion failure in the middle of the script. I probably had made it a bit _too_ trivial. So after fighting that far a while I decided to just do some of the syntactically simpler cases with variations of the previous 'sed' scripts. The more syntactically complex multi-line cases would mostly really want whitespace cleanup anyway. Signed-off-by: Linus Torvalds

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51Z

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

vfio/pds: Fix memory leak in pds_vfio_dirty_enable()

2025-12-28T19:33:40Z

pds_vfio_dirty_enable() allocates memory for region_info. If interval_tree_iter_first() returns NULL, the function returns -EINVAL immediately without freeing the allocated memory, causing a memory leak. Fix this by jumping to the out_free_region_info label to ensure region_info is freed. Fixes: 2e7c6feb4ef52 ("vfio/pds: Add multi-region support") Signed-off-by: Zilin Guan Link: https://lore.kernel.org/r/20251225143150.1117366-1-zilin@seu.edu.cn Signed-off-by: Alex Williamson

vfio/pci: Convert all PCI drivers to get_region_info_caps

2025-11-12T22:06:40Z

Since the core function signature changes it has to flow up to all drivers. Reviewed-by: Kevin Tian Reviewed-by: Pranjal Shrivastava Reviewed-by: Brett Creeley Signed-off-by: Jason Gunthorpe Link: https://lore.kernel.org/r/19-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com Signed-off-by: Alex Williamson

vfio/pci: Fill in the missing get_region_info ops

2025-11-12T22:05:02Z

Now that every variant driver provides a get_region_info op remove the ioctl based dispatch from vfio_pci_core_ioctl(). Reviewed-by: Kevin Tian Reviewed-by: Pranjal Shrivastava Signed-off-by: Jason Gunthorpe Link: https://lore.kernel.org/r/5-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com Signed-off-by: Alex Williamson

Merge tag 'vfio-v6.18-rc1' of https://github.com/awilliam/linux-vfio

2025-10-04T15:24:54Z

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 ...

vfio/pci: drop nth_page() usage within SG entry

2025-09-21T21:22:08Z

It's no longer required to use nth_page() when iterating pages within a single SG entry, so let's drop the nth_page() usage. Link: https://lkml.kernel.org/r/20250901150359.867252-33-david@redhat.com Signed-off-by: David Hildenbrand Reviewed-by: Lorenzo Stoakes Reviewed-by: Alex Williamson Reviewed-by: Brett Creeley Cc: Jason Gunthorpe Cc: Yishai Hadas Cc: Shameer Kolothum Cc: Kevin Tian Signed-off-by: Andrew Morton

vfio/pds: replace bitmap_free with vfree

2025-09-19T20:48:58Z

host_seq_bmp is allocated with vzalloc but is currently freed with bitmap_free, which uses kfree internally. This mismach prevents the resource from being released properly and may result in memory leaks or other issues. Fix this by freeing host_seq_bmp with vfree to match the vzalloc allocation. Fixes: f232836a9152 ("vfio/pds: Add support for dirty page tracking") Signed-off-by: Zilin Guan Reviewed-by: Brett Creeley Link: https://lore.kernel.org/r/20250913153154.1028835-1-zilin@seu.edu.cn Signed-off-by: Alex Williamson

vfio/pci: Do vf_token checks for VFIO_DEVICE_BIND_IOMMUFD

2025-08-05T21:41:14Z

This was missed during the initial implementation. The VFIO PCI encodes the vf_token inside the device name when opening the device from the group FD, something like: "0000:04:10.0 vf_token=bd8d9d2b-5a5f-4f5a-a211-f591514ba1f3" This is used to control access to a VF unless there is co-ordination with the owner of the PF. Since we no longer have a device name in the cdev path, pass the token directly through VFIO_DEVICE_BIND_IOMMUFD using an optional field indicated by VFIO_DEVICE_BIND_FLAG_TOKEN. Fixes: 5fcc26969a16 ("vfio: Add VFIO_DEVICE_BIND_IOMMUFD") Tested-by: Shameer Kolothum Reviewed-by: Yi Liu Signed-off-by: Jason Gunthorpe Reviewed-by: Kevin Tian Link: https://lore.kernel.org/r/0-v3-bdd8716e85fe+3978a-vfio_token_jgg@nvidia.com Signed-off-by: Alex Williamson