linux-kernel - Re: [PATCH 2/3] x86, fpu: enable eagerfpu by default for xsaveopt

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Date:	Fri, 07 Sep 2012 12:20:56 -0700
From:	Suresh Siddha <suresh.b.siddha@...el.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	mingo@...nel.org, torvalds@...ux-foundation.org,
	andreas.herrmann3@....com, bp@...64.org, robert.richter@....com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] x86, fpu: enable eagerfpu by default for xsaveopt

On Fri, 2012-09-07 at 11:43 -0700, H. Peter Anvin wrote:
> On 09/07/2012 11:31 AM, Suresh Siddha wrote:
> >
> > diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
> > index 6273099..b21bcbd 100644
> > --- a/Documentation/kernel-parameters.txt
> > +++ b/Documentation/kernel-parameters.txt
> > @@ -1835,7 +1835,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
> >   			enabling legacy floating-point and sse state.
> >
> >   	eagerfpu=	[X86]
> > -			on	enable eager fpu restore
> > +			on	enable eager fpu restore (default for xsaveopt)
> >   			off	disable eager fpu restore
> >
> 
> Should we make this a tristate (on, off, default/auto)?

Intention is to automatically enable it for xsaveopt with out any
explicit boot parameters (for the advantages I mentioned in the previous
changelogs).

thanks,
suresh


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