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Subject: Re: 7447A strange problem with MSR:POW (WAS: can't boot 2.6.17-rc1)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Paul Mackerras <paulus@samba.org>
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Date: Tue, 18 Apr 2006 16:37:40 +1000
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On Tue, 2006-04-18 at 16:32 +1000, Paul Mackerras wrote:
> Benjamin Herrenschmidt writes:
> 
> > The 970 version bloats the exception prolog significantly... I
> 
> Four instructions, in the external and decrementer interrupt entry
> paths - I don't think that's really significant bloat.

Yeah well.. including a load.. ok, I admit that should be fairly hot...
btw, I suppose you took care of having those local flags in some hot
cache line ? :)

> More likely we'll get more situations like Cell where we come in
> through the soft reset vector after sleep.

Yeah.

Ben.