Re: pte bit spin lock

From: Christoph Lameter <christoph_at_lameter.com>
Date: 2004-11-20 06:49:40
On Fri, 19 Nov 2004, Nick Piggin wrote:

> I was wondering if it might be possible to change arch/ia64/kernel/ivt.S
> routines that modify pte access bits, to first take a "spin lock bit" in
> the pte before any other modifications to it, and clear the lock bit when
> done?

Sure.

> And second question, a pte's memory doesn't ever get updated transparently
> by the hardware on ia64, does it?

Correct.

> And my last question... I wonder if someone might be able to help me do the
> assembly for the locking in ivt.S provided it is a small job and I give the
> specification? Sorry, I have no idea about ia64 assembly :(

I could take a look at it next week.
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Received on Fri Nov 19 15:27:58 2004

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