linux-kernel - Re: [PATCH net-next 1/5] netdevice: convert private flags

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240626075117.6a250653@kernel.org>
Date: Wed, 26 Jun 2024 07:51:17 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, David Ahern
 <dsahern@...nel.org>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Andrew Lunn
 <andrew@...n.ch>, nex.sw.ncis.osdt.itp.upstreaming@...el.com,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 1/5] netdevice: convert private flags > BIT(31)
 to bitfields

On Tue, 25 Jun 2024 13:44:28 +0200 Alexander Lobakin wrote:
> +	struct_group(__priv_flags,
> +		unsigned long		priv_flags:32;
> +		unsigned long		see_all_hwtstamp_requests:1;
> +		unsigned long		change_proto_down:1;
> +	);

I don't think we should group them indiscriminately. Better to add the
asserts flag by flag. Neither of the flags you're breaking out in this
patch are used on the fast path.

Or is the problem that CACHELINE_ASSERT_GROUP_MEMBER doesn't work on
bitfields?