linux-kernel - Re: [PATCH bpf] riscv, bpf: make some atomic operations fully ordered

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Date: Mon, 13 May 2024 00:00:29 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Puranjay Mohan <puranjay@...nel.org>
Cc: ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
 martin.lau@...ux.dev, eddyz87@...il.com, song@...nel.org,
 yonghong.song@...ux.dev, john.fastabend@...il.com, kpsingh@...nel.org,
 sdf@...gle.com, haoluo@...gle.com, jolsa@...nel.org, bjorn@...nel.org,
 pulehui@...wei.com, paulmck@...nel.org, paul.walmsley@...ive.com,
 palmer@...belt.com, aou@...s.berkeley.edu, bpf@...r.kernel.org,
 linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
 puranjay12@...il.com
Subject: Re: [PATCH bpf] riscv, bpf: make some atomic operations fully ordered

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@...nel.org>:

On Sun,  5 May 2024 20:16:33 +0000 you wrote:
> The BPF atomic operations with the BPF_FETCH modifier along with
> BPF_XCHG and BPF_CMPXCHG are fully ordered but the RISC-V JIT implements
> all atomic operations except BPF_CMPXCHG with relaxed ordering.
> 
> Section 8.1 of the "The RISC-V Instruction Set Manual Volume I:
> Unprivileged ISA" [1], titled, "Specifying Ordering of Atomic
> Instructions" says:
> 
> [...]

Here is the summary with links:
  - [bpf] riscv, bpf: make some atomic operations fully ordered
    https://git.kernel.org/bpf/bpf-next/c/20a759df3bba

You are awesome, thank you!
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