K 10
svn:author
V 3
njl
K 8
svn:date
V 27
2007-03-14T22:30:02.000000Z
K 7
svn:log
V 561
Create an identity mapping (V=P) super page for the low memory region on
boot.  Then, just switch to the kernel pmap when suspending instead of
allocating/freeing our own mapping every time.  This should solve a panic
of pmap_remove() being called with interrupts disabled.  Thanks to Alan
Cox for developing this patch.

Note: this means that ACPI requires super page (PG_PS) support in the CPU.
This has been present since the Pentium and first documented in the
Pentium Pro.  However, it may need to be revisited later.

Submitted by:	alc
MFC after:	1 month

END