Pu Lehui dd642ccb45 riscv, bpf: Implement more atomic operations for RV64 ... This patch implement more BPF atomic operations for RV64. The newly added operations are shown below: atomic[64]_[fetch_]add atomic[64]_[fetch_]and atomic[64]_[fetch_]or atomic[64]_xchg atomic[64]_cmpxchg Since riscv specification does not provide AMO instruction for CAS operation, we use lr/sc instruction for cmpxchg operation, and AMO instructions for the rest ops. Tests "test_bpf.ko" and "test_progs -t atomic" have passed, as well as "test_verifier" with no new failure cases. Signed-off-by: Pu Lehui <pulehui@huawei.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: Björn Töpel <bjorn@kernel.org> Link: https://lore.kernel.org/bpf/20220410101246.232875-1-pulehui@huawei.com		2022-04-11 16:54:54 +02:00
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bpf_jit_comp32.c	bpf: Change value of MAX_TAIL_CALL_CNT from 32 to 33	2021-11-16 14:03:15 +01:00
bpf_jit_comp64.c	riscv, bpf: Implement more atomic operations for RV64	2022-04-11 16:54:54 +02:00
bpf_jit_core.c	Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-11-01 19:59:46 -07:00
bpf_jit.h	riscv, bpf: Implement more atomic operations for RV64	2022-04-11 16:54:54 +02:00
Makefile	riscv, bpf: Add RV32G eBPF JIT	2020-03-05 16:13:47 +01:00