linux-kernel - Re: [PATCH 5/5] x86/fpu: Default eagerfpu=on on all CPUs

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Message-ID: <20160123101929.GC16329@pd.tnic>
Date:	Sat, 23 Jan 2016 11:19:29 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Andy Lutomirski <luto@...nel.org>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	Fenghua Yu <fenghua.yu@...el.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Sai Praneeth Prakhya <sai.praneeth.prakhya@...el.com>,
	yu-cheng yu <yu-cheng.yu@...el.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Rik van Riel <riel@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 5/5] x86/fpu: Default eagerfpu=on on all CPUs

On Fri, Jan 22, 2016 at 04:56:06PM -0800, Andy Lutomirski wrote:
> To try to shake out any latent issues on old hardware, this changes
> the default to eager on all CPUs.  If no performance or functionality
> problems show up, a subsequent patch could remove lazy mode entirely.

Yes, I think we should do it, or at least try it. Maybe wait longer than
a kernel release - maybe 2 to be absolutely sure and so that we have
enough time to handle possible breakages.

-- 
Regards/Gruss,
    Boris.

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