Re: x86_64: potential critical issue with quicklists and page tablepages

From: Christoph Lameter
Date: Mon Sep 24 2007 - 17:46:17 EST

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.
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