Subject: Re: Multiple page sizes and the pmap API
To: Nathan J. Williams <email@example.com>
From: Jason R Thorpe <firstname.lastname@example.org>
Date: 12/06/2001 13:42:00
On Thu, Dec 06, 2001 at 04:05:26PM -0500, Nathan J. Williams wrote:
> Be careful to allocate enough bits here for the large number of page
> sizes permitted by some architetures, since they're being allocated in
> a MI bit-space. The IA64 architecture, for example, has ten different
> page sizes, from 4k to 256M.
6 bits is enough to describe all powers of 2 between 2^12 and 2^64, so
I would think that would be more than enough.
-- Jason R. Thorpe <email@example.com>