linux-kernel - Re: [PATCH v4] bpf/verifier: optimize ID mapping reset in states

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Message-Id: 
 <176893800760.583014.3550645133045023335.git-patchwork-notify@kernel.org>
Date: Tue, 20 Jan 2026 19:40:07 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Qiliang Yuan <realwujing@...il.com>
Cc: alexei.starovoitov@...il.com, eddyz87@...il.com,
 andrii.nakryiko@...il.com, andrii@...nel.org, ast@...nel.org,
 bpf@...r.kernel.org, daniel@...earbox.net, haoluo@...gle.com,
 jolsa@...nel.org, kpsingh@...nel.org, linux-kernel@...r.kernel.org,
 martin.lau@...ux.dev, sdf@...ichev.me, song@...nel.org,
 yonghong.song@...ux.dev
Subject: Re: [PATCH v4] bpf/verifier: optimize ID mapping reset in
 states_equal

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@...nel.org>:

On Tue, 20 Jan 2026 10:32:34 +0800 you wrote:
> Currently, reset_idmap_scratch() performs a 4.7KB memset() in every
> states_equal() call. Optimize this by using a counter to track used
> ID mappings, replacing the O(N) memset() with an O(1) reset and
> bounding the search loop in check_ids().
> 
> Acked-by: Eduard Zingerman <eddyz87@...il.com>
> Signed-off-by: Qiliang Yuan <realwujing@...il.com>
> 
> [...]

Here is the summary with links:
  - [v4] bpf/verifier: optimize ID mapping reset in states_equal
    https://git.kernel.org/bpf/bpf-next/c/f81c07a6e98e

You are awesome, thank you!
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