linux-kernel - Re: [PATCH] lguest-fix-divide-error-implement-sched

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Date:	Tue, 5 Jun 2007 09:07:14 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Andi Kleen <ak@...e.de>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Matt Mackall <mpm@...enic.com>, linux-kernel@...r.kernel.org,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH] lguest-fix-divide-error-implement-sched_clock

On Tue, 5 Jun 2007 16:24:52 +0200 Andi Kleen <ak@...e.de> wrote:

> On Tuesday 05 June 2007 15:11, Rusty Russell wrote:
> > On Tue, 2007-06-05 at 12:01 +0200, Andi Kleen wrote:
> > > > But TSC is a "required feature", so "cpu_has_tsc" is always true.
> > >
> > > Hmm? It isn't. What makes you think so?
> >
> > Interestingly it seems to be only in -mm.
> 
> If it is then it doesn't come out of my tree. Also sounds broken to me.
> The required bits are only for features needed by the compiler's generated
> code where not having them could cause an early crash.
> 

This?

-#define REQUIRED_MASK1 (NEED_PAE|NEED_CMOV|NEED_CMPXCHG64)
+#define REQUIRED_MASK0 (NEED_FPU|NEED_TSC|NEED_PAE|NEED_CMOV|NEED_CX8)

Came in via git-newsetup
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