linux-kernel - Re: [PATCH 1/2] x86: Remove dynamic NOP selection

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Message-ID: <Pine.BSM.4.64L.2401212356390.999@herc.mirbsd.org>
Date: Sun, 21 Jan 2024 23:58:11 +0000 (UTC)
From: Thorsten Glaser <tg@...ian.org>
To: "H. Peter Anvin" <hpa@...or.com>
cc: Peter Zijlstra <peterz@...radead.org>, x86@...nel.org, rostedt@...dmis.org,
        torvalds@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-toolchains@...r.kernel.org, jpoimboe@...hat.com,
        alexei.starovoitov@...il.com, mhiramat@...nel.org
Subject: Re: [PATCH 1/2] x86: Remove dynamic NOP selection

H. Peter Anvin dixit:

> But yes, with all even remotely recent CPUs all actually handling nopl
> properly, this isn't relevant anymore.

This was, incidentally, triggered by looking into a problem report that
something did *not* work on a Geode LX system.

People don’t just run Linux on “recent CPUs” (though I at least got me
an Atom and a Core2Duo for it and run BSD on my Pentium-M and VIA C7
systems).

bye,
//mirabilos
-- 
„Cool, /usr/share/doc/mksh/examples/uhr.gz ist ja ein Grund,
mksh auf jedem System zu installieren.“
	-- XTaran auf der OpenRheinRuhr, ganz begeistert
(EN: “[…]uhr.gz is a reason to install mksh on every system.”)