On Tue, Jan 15, 2008 at 10:15:59PM +0000, Manuel Bouyer wrote:
> 
> Module Name:	src
> Committed By:	bouyer
> Date:		Tue Jan 15 22:15:59 UTC 2008
> 
> Modified Files:
> 	src/sys/arch/i386/include [bouyer-xeni386]: pmap.h
> 	src/sys/arch/x86/x86 [bouyer-xeni386]: pmap.c
> 	src/sys/arch/xen/x86 [bouyer-xeni386]: x86_xpmap.c
> 
> Log Message:
> Snapshot of work in progress: an Xen i386PAE kernel boots and start init
> on a amd64 dom0, but panics when init forks.
> This code needs a lot of cleanup, and the pmap handling is minimal to
> allow init to start. It's a proof of concept of how PAE on Xen can work.
> 
> For PAE guest, the Xen MMU handling differs in some significant way
> from the i386 or amd64 Xen.
> The L3 page has only 4 entries, the last one mapping 0xc0000000->0xffffffff
> (which happens to be our kenrel VM range, that's cool).

Unless you define options KERNBASE.

Pavel