Re: Uncached memory allocator for ia64.

David Mosberger
2004-09-15T08:23:55Z

>>>>> On Tue, 14 Sep 2004 10:16:29 -0500, Robin Holt <holt@sgi.com> said:

Robin> I would like to start with the general, what are we trying to
Robin> solve? I can not think of a single reason aside from the
Robin> previously discussed min state area for the kernel to ever
Robin> need to work with memory uncached.

Uh, what about device drivers that want to map physical memory with
write-combine? Isn't that effectively what your fetchop driver does?

Robin> Assuming there is no reason, can we pare this discussion back
Robin> to a page based allocator? That would be much simpler to
Robin> work with and would not need to recombine fragments.

Quite possibly. It certainly seems reasonable to start that way.

--david