[PATCH RESEND bpf-next v2 0/3] Use bpf_prog_pack for RV64 bpf trampoline

patchwork-bot+netdevbpf at kernel.org patchwork-bot+netdevbpf at kernel.org
Mon Jul 1 08:20:30 PDT 2024


Hello:

This series was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel at iogearbox.net>:

On Sat, 22 Jun 2024 03:04:34 +0000 you wrote:
> We used bpf_prog_pack to aggregate bpf programs into huge page to
> relieve the iTLB pressure on the system. We can apply it to bpf
> trampoline, as Song had been implemented it in core and x86 [0]. This
> patch is going to use bpf_prog_pack to RV64 bpf trampoline. Since Song
> and Puranjay have done a lot of work for bpf_prog_pack on RV64,
> implementing this function will be easy. But one thing to mention is
> that emit_call in RV64 will generate the maximum number of instructions
> during dry run, but during real patching it may be optimized to 1
> instruction due to distance. This is no problem as it does not overflow
> the allocated RO image.
> 
> [...]

Here is the summary with links:
  - [RESEND,bpf-next,v2,1/3] bpf: Use precise image size for struct_ops trampoline
    https://git.kernel.org/bpf/bpf-next/c/d1a426171d76
  - [RESEND,bpf-next,v2,2/3] riscv, bpf: Fix out-of-bounds issue when preparing trampoline image
    https://git.kernel.org/bpf/bpf-next/c/9f1e16fb1fc9
  - [RESEND,bpf-next,v2,3/3] riscv, bpf: Use bpf_prog_pack for RV64 bpf trampoline
    https://git.kernel.org/bpf/bpf-next/c/2382a405c581

You are awesome, thank you!
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