For the BPF summit meeting tomorrow, I might as well have a mergable version. I took a look back on BPF-CFI patches to check the status and found that there had been no updates for around a month, so I went ahead and made the fixes suggested in v2. E.g. ffff80008021d5a4 <reuseport_array_lookup_elem>: ffff80008021d5a4: d503245f bti c Potentially this should be replaced by a proper paciasp + autiasp, but I suppose if we can assume the verifier provides back-edge integrity. Changes in v3->v4 https://lore.kernel.org/all/fhdcjdzqdqnoehenxbipfaorseeamt3q7fbm7ghe6z5s2chif5@lrhtasolawud/ - Fix authorship attribution Changes in v2->v3: https://lore.kernel.org/all/20240324211518.93892-1-puranjay12@xxxxxxxxx/ - Simplify cfi_get_func_hash to avoid needless failure case - Use DEFINE_CFI_TYPE as suggested by Mark Rutland Changes in v1->v2: https://lore.kernel.org/bpf/20240227151115.4623-1-puranjay12@xxxxxxxxx/ - Rebased on latest bpf-next/master Mark Rutland (1): cfi: add C CFI type macro Maxwell Bland (1): arm64/cfi,bpf: Use DEFINE_CFI_TYPE in arm64 Puranjay Mohan (1): arm64/cfi,bpf: Support kCFI + BPF on arm64 arch/arm64/include/asm/cfi.h | 23 ++++++++++++++++++++++ arch/arm64/kernel/alternative.c | 18 +++++++++++++++++ arch/arm64/net/bpf_jit_comp.c | 18 +++++++++++++++-- arch/riscv/kernel/cfi.c | 34 ++------------------------------ arch/x86/kernel/alternative.c | 35 +++------------------------------ include/linux/cfi_types.h | 23 ++++++++++++++++++++++ 6 files changed, 85 insertions(+), 66 deletions(-) create mode 100644 arch/arm64/include/asm/cfi.h base-commit: 329a6720a3ebbc041983b267981ab2cac102de93 -- 2.34.1
