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From: patchwork-bot+netdevbpf@kernel.org
To: Chen Pei <cp0613@linux.alibaba.com>
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
	memxor@gmail.com, bjorn@kernel.org, puranjay@kernel.org,
	ihor.solodrai@linux.dev, eddyz87@gmail.com, martin.lau@linux.dev,
	song@kernel.org, yonghong.song@linux.dev, jolsa@kernel.org,
	emil@etsalapatis.com, pulehui@huawei.com, pjw@kernel.org,
	palmer@dabbelt.com, shuah@kernel.org, guoren@kernel.org,
	bpf@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH bpf-next v3 0/2] bpf, riscv: Add support for signed arena loads
Date: Tue, 25 Aug 2026 13:30:09 +0000	[thread overview]
Message-ID: <178766460914.3460835.2556196507996630304.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <cover.1787140923.git.cp0613@linux.alibaba.com>

Hello:

This series was applied to bpf/bpf-next.git (master)
by Kumar Kartikeya Dwivedi <memxor@gmail.com>:

On Wed, 19 Aug 2026 20:09:22 +0800 you wrote:
> Hi,
> 
> Signed loads from arena memory are currently unsupported on riscv64:
> bpf_jit_supports_insn() rejects BPF_MEMSX loads when in_arena is set,
> so the verifier fails such programs with "sign extending loads from
> arena are not supported yet". The x86 and arm64 JITs gained support
> for them in v6.18 (a91ae3c89311, eab2a71f3a6a). Since compilers are
> free to generate signed loads into arena memory (e.g. GCC-14 was
> reported to do so), otherwise valid BPF programs fail to load on
> riscv64.
> 
> [...]

Here is the summary with links:
  - [bpf-next,v3,1/2] bpf, riscv: Add support for signed arena loads
    https://git.kernel.org/bpf/bpf-next/c/b4757714cc63
  - [bpf-next,v3,2/2] selftests/bpf: Enable arena LDSX tests for riscv64
    https://git.kernel.org/bpf/bpf-next/c/8f2087a1b43b

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



WARNING: multiple messages have this Message-ID (diff)
From: patchwork-bot+netdevbpf@kernel.org
To: Chen Pei <cp0613@linux.alibaba.com>
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
	memxor@gmail.com, bjorn@kernel.org, puranjay@kernel.org,
	ihor.solodrai@linux.dev, eddyz87@gmail.com, martin.lau@linux.dev,
	song@kernel.org, yonghong.song@linux.dev, jolsa@kernel.org,
	emil@etsalapatis.com, pulehui@huawei.com, pjw@kernel.org,
	palmer@dabbelt.com, shuah@kernel.org, guoren@kernel.org,
	bpf@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH bpf-next v3 0/2] bpf, riscv: Add support for signed arena loads
Date: Tue, 25 Aug 2026 13:30:09 +0000	[thread overview]
Message-ID: <178766460914.3460835.2556196507996630304.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <cover.1787140923.git.cp0613@linux.alibaba.com>

Hello:

This series was applied to bpf/bpf-next.git (master)
by Kumar Kartikeya Dwivedi <memxor@gmail.com>:

On Wed, 19 Aug 2026 20:09:22 +0800 you wrote:
> Hi,
> 
> Signed loads from arena memory are currently unsupported on riscv64:
> bpf_jit_supports_insn() rejects BPF_MEMSX loads when in_arena is set,
> so the verifier fails such programs with "sign extending loads from
> arena are not supported yet". The x86 and arm64 JITs gained support
> for them in v6.18 (a91ae3c89311, eab2a71f3a6a). Since compilers are
> free to generate signed loads into arena memory (e.g. GCC-14 was
> reported to do so), otherwise valid BPF programs fail to load on
> riscv64.
> 
> [...]

Here is the summary with links:
  - [bpf-next,v3,1/2] bpf, riscv: Add support for signed arena loads
    https://git.kernel.org/bpf/bpf-next/c/b4757714cc63
  - [bpf-next,v3,2/2] selftests/bpf: Enable arena LDSX tests for riscv64
    https://git.kernel.org/bpf/bpf-next/c/8f2087a1b43b

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



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  parent reply	other threads:[~2026-08-25 13:31 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-19 12:09 [PATCH bpf-next v3 0/2] bpf, riscv: Add support for signed arena loads Chen Pei
2026-08-19 12:09 ` Chen Pei
2026-08-19 12:09 ` [PATCH bpf-next v3 1/2] " Chen Pei
2026-08-19 12:09   ` Chen Pei
2026-08-20  4:12   ` Pu Lehui
2026-08-20  4:12     ` Pu Lehui
2026-08-19 12:09 ` [PATCH bpf-next v3 2/2] selftests/bpf: Enable arena LDSX tests for riscv64 Chen Pei
2026-08-19 12:09   ` Chen Pei
2026-08-20  4:12   ` Pu Lehui
2026-08-20  4:12     ` Pu Lehui
2026-08-25 13:16 ` [PATCH bpf-next v3 0/2] bpf, riscv: Add support for signed arena loads Björn Töpel
2026-08-25 13:16   ` Björn Töpel
2026-08-25 13:30 ` patchwork-bot+netdevbpf [this message]
2026-08-25 13:30   ` patchwork-bot+netdevbpf

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