[lkml]   [2007]   [Mar]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear)
On Wed, 2007-03-07 at 11:38 +0100, Nick Piggin wrote:

> > > There are real users who want these fast, though.
> >
> > Yeah, why don't we have a tree per nonlinear vma to find these pages?
> >
> > wli mentions shadow page tables..
> We could do something more efficient, but I thought that half the point
> was that they didn't carry any of this extra memory, and they could be
> really fast to set up at the expense of efficiency elsewhere.

I'm failing to understand this :-(

That extra memory, and apparently they don't want the inefficiency

> I don't see it being a big deal. I doubt anybody is writing out huge
> amounts of data via nonlinear mappings.

Well, now they don't, but it could be done or even exploited as a DoS.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-03-07 11:51    [W:0.110 / U:3.648 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site