Re: [PATCH net] netfilter: nf_tables: Only use nf_skip_indirect_calls() when MITIGATION_RETPOLINE

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Subject: Re: [PATCH net] netfilter: nf_tables: Only use nf_skip_indirect_calls() when MITIGATION_RETPOLINE
From: Florian Westphal <fw@xxxxxxxxx>
Date: Wed, 19 Mar 2025 10:19:44 +0100
Cc: pablo@xxxxxxxxxxxxx, kadlec@xxxxxxxxxxxxx, davem@xxxxxxxxxxxxx, edumazet@xxxxxxxxxx, kuba@xxxxxxxxxx, pabeni@xxxxxxxxxx, horms@xxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, coreteam@xxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, eric.dumazet@xxxxxxxxx, fw@xxxxxxxxx, zhanjun@xxxxxxxxxxxxx, niecheng1@xxxxxxxxxxxxx, Wentao Guan <guanwentao@xxxxxxxxxxxxx>
In-reply-to: <91A1F82B6B7D6AC2+20250319033444.1135201-1-wangyuli@uniontech.com>
User-agent: Mutt/1.10.1 (2018-07-13)

WangYuli <wangyuli@xxxxxxxxxxxxx> wrote:
> -static inline void nf_skip_indirect_calls_enable(void) { }

I would keep this around to avoid the extra

> +#ifdef CONFIG_MITIGATION_RETPOLINE
>  	nf_skip_indirect_calls_enable();
> +#endif /* CONFIG_MITIGATION_RETPOLINE */

CONFIG_MITIGATION_RETPOLINE.

References:
- [PATCH net] netfilter: nf_tables: Only use nf_skip_indirect_calls() when MITIGATION_RETPOLINE
  - From: WangYuli

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