[PATCH bpf-next 0/2] Enable inline bpf_kptr_xchg() for RV64

[Pu Lehui]

This patch is the RV64 implementation of inline bpf_kptr_xchg()[0]. RV64
JIT supports 64-bit BPF_XCHG atomic instructions. At the same time, the
underlying implementation of xchg() and atomic64_xchg() in RV64 both are
raw_xchg() that supported 64-bit. Therefore inline bpf_kptr_xchg() will
have equivalent semantics. Let's inline it for better performance.

link: https://lore.kernel.org/bpf/20240105104819.3916743-1-houtao@huaweicloud.com [0]

Pu Lehui (2):
  riscv, bpf: Enable inline bpf_kptr_xchg() for RV64
  selftests/bpf: Enable inline bpf_kptr_xchg() test for RV64

 arch/riscv/net/bpf_jit_comp64.c                           | 5 +++++
 tools/testing/selftests/bpf/prog_tests/kptr_xchg_inline.c | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

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2.34.1