[PATCH] riscv, libbpf: use a0 for RC register

[patchwork-bot+netdevbpf at kernel.org]

Hello:

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

On Wed,  6 Jul 2022 22:02:04 +0800 you wrote:
> According to the RISC-V calling convention register usage here[1],
> a0 is used as return value register, so rename it to make it consistent
> with the spec.
> 
> [1] section 18.2, table 18.2
> https://riscv.org/wp-content/uploads/2015/01/riscv-calling.pdf
> 
> [...]

Here is the summary with links:
  - riscv, libbpf: use a0 for RC register
    https://git.kernel.org/bpf/bpf-next/c/935dc35c7531

You are awesome, thank you!
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