98a8e8b486
(domU only). PAE support is enabled by 'options PAE', see the new XEN3PAE_DOMU
and INSTALL_XEN3PAE_DOMU kernel config files.
See the comments in arch/i386/include/{pte.h,pmap.h} to see how it works.
In short, we still handle it as a 2-level MMU, with the second level page
directory being 4 pages in size. pmap switching is done by switching the
L2 pages in the L3 entries, instead of loading %cr3. This is almost required
by Xen, which handle the last L2 page (the one mapping 0xc0000000 - 0xffffffff)
in a very special way. But this approach should also work for native PAE
support if ever supported (in fact, the pmap should almost suport native
PAE, what's missing is bootstrap code in locore.S).
6 lines
114 B
Plaintext
6 lines
114 B
Plaintext
# $NetBSD: XEN3PAE_DOMU,v 1.2 2008/01/23 19:46:43 bouyer Exp $
|
|
|
|
include "arch/i386/conf/XEN3_DOMU"
|
|
|
|
options PAE
|