Re: [RFC][PATCH] linux-2.6.0-test2_mtrr-race-fix_A0

From: Zwane Mwaikambo (zwane@arm.linux.org.uk)
Date: Thu Aug 07 2003 - 00:06:08 EST

On Wed, 6 Aug 2003, john stultz wrote:

> On Wed, 2003-08-06 at 11:31, Zwane Mwaikambo wrote:
> > The intel manual (10-36 Memory Cache Control - vol3) actually recommends
> > the following procedure I was a bit anal about explicitely setting and
> > clearing flags and used the specific TLB flush via cr3->reg->cr3. John
> > could you give this a spin on your afflicted systems?
>
> I'm not quite sure I follow. Really I've never looked at the mtrr code
> before, so forgive my daftness. I just found a deadlock that was
> locking my box caused by the synchronization between ipi_handler() and
> set_mtrr() (which Mark's patch seems to properly fix).
>
> How does this change affect the deadlock? Is this just a separate issue?
> thanks

Mostly seperate issue, but seeing as we where there, there is a slight
deviation from recommended procedure. Sorry about that, you may ignore it.

Thanks
        Zwane 

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