remap_page_range with addresses above 4GB

From: John Fusco (fusco_john_at_yahoo.com)
Date: 09/22/04 

Date: Wed, 22 Sep 2004 03:30:28 GMT

I have a device that requires lots of contiguous RAM (100's of MB). I
generally use the boot argument 'mem=XXX' to hide memory from the kernel
so I can use it for my driver.

This works fine as long as XXX is less than 4GB. It turns out that
remap_page_range takes an 'unsigned long' as its argument for a physical
address, which on IA32 is 32-bits. So I can't use it when I have to
reserve memory above 4GB.

Does anyone have any ideas how to do this?

Thanks,
John

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