Pu Lehui 25ad10658d riscv, bpf: Adapt bpf trampoline to optimized riscv ftrace framework ... Commit 6724a76cff ("riscv: ftrace: Reduce the detour code size to half") optimizes the detour code size of kernel functions to half with T0 register and the upcoming DYNAMIC_FTRACE_WITH_DIRECT_CALLS of riscv is based on this optimization, we need to adapt riscv bpf trampoline based on this. One thing to do is to reduce detour code size of bpf programs, and the second is to deal with the return address after the execution of bpf trampoline. Meanwhile, we need to construct the frame of parent function, otherwise we will miss one layer when unwinding. The related tests have passed. Signed-off-by: Pu Lehui <pulehui@huawei.com> Tested-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20230721100627.2630326-1-pulehui@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2023-08-02 14:03:56 -07:00
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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: Adapt bpf trampoline to optimized riscv ftrace framework	2023-08-02 14:03:56 -07:00
bpf_jit_core.c	riscv, bpf: Fix inconsistent JIT image generation	2023-07-11 09:09:40 +02:00
bpf_jit.h	riscv, bpf: Fix inconsistent JIT image generation	2023-07-11 09:09:40 +02:00
Makefile	riscv, bpf: Add RV32G eBPF JIT	2020-03-05 16:13:47 +01:00