* Re: [PATCH] ppc32: arch code preempt fixes
[not found] ` <Pine.LNX.4.58.0403252207320.8124@ppc970.osdl.org>
@ 2004-03-26 6:55 ` Benjamin Herrenschmidt
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From: Benjamin Herrenschmidt @ 2004-03-26 6:55 UTC (permalink / raw)
To: Linus Torvalds; +Cc: Paul Mackerras, Andrew Morton, linuxppc-dev list
On Fri, 2004-03-26 at 17:12, Linus Torvalds wrote:
>
> On Fri, 26 Mar 2004, Benjamin Herrenschmidt wrote:
> >
> > I figured the best way to stop beeing bothered by users trying to run
> > preempt was to fix it ;)
> >
> > Here's a first batch that close some races we had when testing regs->msr
> > for altivec or FPU enable, then doing the giveup_* function. A preempt
> > in between those would have caused us to save a stale altivec or FPU
> > context.
>
> Ok, this clashed with Paul work on threaded core-dumps.
>
> I fixed up the clashes by hand, but you should really check the end result
> for sanity. Ben, Paul?
Will do, thanks. Sorry for the clash, I should have pulled this morning..
Ben.
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