Re: [RFC] page fault retry with NOPAGE_RETRY

On Fri, 22 Sep 2006 08:05:04 +1000
Benjamin Herrenschmidt <[email protected]> wrote:

> > So I think there's a nasty DoS here if we permit infinite retries.  But
> > it's not just that - there might be other situations under really heavy
> > memory pressure where livelocks like this can occur.  It's just a general
> > robustness-of-implementation issue.
> 
> Got it. Now, changing args to no_page() will be a pretty big task....
> 

Not as big as removing the pt_regs arg from every interrupt handler ;)

But pretty mechanical.  Problem is, I don't think we have our mechanic.
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