Re: temp. mem mappings

["Stephen C. Tweedie" <sct@redhat.com>]

Hi,

On Tue, Jun 05, 2001 at 01:51:37PM -0500, Timur Tabi wrote:

> > > Allocate a virtual memory area using vmalloc and then save and modify the
> > > pmd/pgd/pte to point to the physical memory you want.  To unmap, just undo the
> > > previous steps.
> > 
> > ioremap() is there for exactly that purpose. 
> 
> True, except that you can't use ioremap on normal memory, which is what I
> assumed he was trying to do.

Normal memory is identity-mapped very early in boot anyway (except for
highmem on large Intel boxes, that is, and kmap() works for that.)

--Stephen
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