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SubjectRe: Page Attribute Table (PAT) support?
** Reply to message from Jeff Hartmann <> on Wed, 24 Jan
2001 11:45:43 -0700

> I'm actually writing support for the PAT as we speak. I already have
> working code for PAT setup. Just having a parameter for ioremap is not
> enough, unfortunately. According to the Intel Architecture Software
> Developer's Manual we have to remove all mappings of the page that are
> cached. Only then can they be mapped with per page write combining. I
> should have working code by the 2.5.x timeframe. I can also discuss the
> planned interface if anyone is interested.

I'm interested. Would it be possible to port this support to 2.2, or would
that be too much work?

Timur Tabi -
Interactive Silicon -

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