Re: x86_64: potential critical issue with quicklists and pagetable pages

From: Benjamin Herrenschmidt
Date: Mon Sep 24 2007 - 20:11:08 EST

On Mon, 2007-09-24 at 14:42 -0700, Christoph Lameter wrote:
> On Tue, 25 Sep 2007, Benjamin Herrenschmidt wrote:
> > I'd suggest just reverting the patch for now (well, I see from the
> > commit list that you did just that) and I'll try to come up with
> > something better.
> That would be great. Note that the reversal of the x86_64 quicklist
> support patch does not address the issue that is (as pointed out by
> Siddha) in core code and not in x86_64 arch dode. The fix that I posted
> fixes the core issue.
> > Christoph, I'd be happy if you didn't start butchering mmu_gather just
> > right now since I'm doing just that and it will collide all over the
> > place :-) Or if you want something specific done, please throw
> > ideas/patches at me and I'll integrate that in my serie.
> Any "butchering" was done for 2.6.22. 2.6.23 only added arch support for
> x86_64 since Andi forgot to merge it for .22. I'd be glad if you could
> look into this and make quicklists interoperate nicely withh mmu gather.

I'll try, I'll let you know. Give me a few days to finish catching up
with backlog of things before i get back to it though.


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