Jason Gunthorpe be0237a5f3 selftests: Add additional kernel functions to tools/include/ ...

These are needed by the VFIO mlx5 selftest in the following patches,
which includes some headers from mlx5 and also needs a few more
MMIO-related features.

- DECLARE_FLEX_ARRAY in new tools/include/linux/stddef.h (wraps
  existing __DECLARE_FLEX_ARRAY from uapi/linux/stddef.h)

- dma_wmb/dma_rmb barriers: x86 uses compiler barrier
  (DMA-coherent), arm64 uses dmb oshst/oshld (outer-shareable for
  device visibility), generic fallback uses wmb/rmb

- ioread32be/iowrite32be in tools/include/asm-generic/io.h for
  big-endian MMIO register access

Assisted-by: Claude:claude-opus-4.6
Reviewed-by: David Matlack <dmatlack@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/5-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>

2026-09-28 14:10:48 -06:00

..

bitops

tools headers asm: Sync fls headers header with the kernel sources

2025-11-03 13:35:06 -03:00

atomic-gcc.h

tools: KVM: selftests: Convert clear/set_bit() to actual atomics

2022-12-02 13:22:35 -05:00

barrier.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36

2019-05-24 17:27:11 +02:00

bitops.h

tools: sync tools/bitmap with mother linux

2022-01-15 08:47:31 -08:00

bitsperlong.h

tools: sync small_const_nbits() macro with the kernel

2021-05-06 19:24:12 -07:00

hugetlb_encode.h

hugetlb_encode.h: fix undefined behaviour (34 << 26)

2022-10-03 14:02:55 -07:00

io.h

selftests: Add additional kernel functions to tools/include/

2026-09-28 14:10:48 -06:00