Re: changing KERNBASE for PAE domU

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, Aug 25, 2009 at 06:23:48PM +0200, Anup Patil wrote:
> 
> A attempt to change the KERNEBASE from 0xc0000000 to 0x80000000 in a
> netbsd 5.0 PAE (i386) domU. with xen-3.3.1 and linux-2.18.8 dom0 results
> in crash.
> 
> Is this possible ? what about the shadow page for the kernel mapping,
> will this change too  ?

The code assumes the kernel space is mapped by a single
L2 page. With KERNBASE set to 0x80000000 you'd need 2.
Seen i386/include/pmap.h and x86/x86/pmap.c


-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--