Re: alpha iommu fixes

Ivan Kokshaysky (ink@jurassic.park.msu.ru)
Mon, 21 May 2001 15:51:51 +0400

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On Mon, May 21, 2001 at 01:19:59PM +0200, Andrea Arcangeli wrote:
> Alpha in mainline is just screwedup if a single pci bus tries to dynamic
> map more than 128mbyte, changing it to 512mbyte is trivial, growing more

Could you just describe the configuration where increasing sg window
from 128 to 512Mb actually fixes "out of ptes" problem? I mean which
drivers involved, what kind of load etc.
I'm unable reproduce it with *8Mb* window, so I'm asking.

Ivan.
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