linux-kernel - Re: [PATCH next 1/1] fs: Mark get_sigset_argpack() __always

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Message-ID: <oo4w7ennuubxt4h4c3p226op77xm74g7rzelpna7ejlfmikjoh@pn2iymeg6flf>
Date: Mon, 10 Feb 2025 14:59:52 +0100
From: Mateusz Guzik <mjguzik@...il.com>
To: David Laight <david.laight.linux@...il.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>, 
	Al Viro <viro@...iv.linux.org.uk>, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>
Subject: Re: [PATCH next 1/1] fs: Mark get_sigset_argpack() __always_inline

On Sat, Feb 08, 2025 at 11:05:00PM +0000, David Laight wrote:
> Defaulting to SMAP just requires a bit of bravery!
> After all (as you said) it ought to get patched out before userspace exists.
> It is still fairly new (Broadwell ix-5xxx).
> I'm sure a lot of people are still running Linux on Sandy bridge cpu.

The Intel folk posting over at https://lore.kernel.org/oe-lkp/ have a
bunch of old yellers they test on (and probably more they can dig up if
needed) and will likely be happy to boot test a patch of the sort, just
explicitly state you want a pre-SMAP CPU.