| Message ID | 20241107134529.8602-1-leon.hwang@linux.dev (mailing list archive) |
|---|---|
| Headers | show |
| Series | bpf, x64: Introduce two tailcall enhancements | expand |
Hello: This series was applied to bpf/bpf-next.git (master) by Alexei Starovoitov <ast@kernel.org>: On Thu, 7 Nov 2024 21:45:27 +0800 you wrote: > This patch set introduces two enhancements aimed at improving tailcall > handling in the x64 JIT: > > 1. Tailcall info is propagated only for subprogs. > 2. Tailcall info is propagated through the trampoline only when the target > is a subprog and it is tail_call_reachable. > > [...] Here is the summary with links: - [bpf-next,v3,1/2] bpf, x64: Propagate tailcall info only for subprogs https://git.kernel.org/bpf/bpf-next/c/a1087da9d11e - [bpf-next,v3,2/2] bpf, verifier: Check trampoline target is tail_call_reachable subprog (no matching commit) You are awesome, thank you!
This patch set introduces two enhancements aimed at improving tailcall handling in the x64 JIT: 1. Tailcall info is propagated only for subprogs. 2. Tailcall info is propagated through the trampoline only when the target is a subprog and it is tail_call_reachable. Changes: v2 -> v3: * Add Yonghong's ACK. v1 -> v2: * Address comment from Alexei: * Rather live with tail call inefficiency than abuse insns fields further. Leon Hwang (2): bpf, x64: Propagate tailcall info only for subprogs bpf, verifier: Check trampoline target is tail_call_reachable subprog arch/x86/net/bpf_jit_comp.c | 3 ++- include/linux/bpf.h | 1 + kernel/bpf/verifier.c | 4 +++- 3 files changed, 6 insertions(+), 2 deletions(-)