changing KERNBASE for PAE domU

[Anup Patil <anupp%gmx.net@localhost>]

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  ?

If the options KERNBASE is changed and the makefiles for i386 and xen
(Ttext ) the domU crashes on start wth:

HYPERVISOR_shared_info 0xc05bd000 (b73000)
(XEN) d80:v0: unhandled page fault (ec=0000)
(XEN) Pagetable walk from c1f158c0:
(XEN)  L3[0x003] = 00000002eba58001 000005b4
(XEN)  L2[0x00f] = 0000000000000000 ffffffff 
(XEN) domain_crash_sync called from entry.S (ff1a6281)
(XEN) Domain 80 (vcpu#0) crashed on cpu#6:
(XEN) ----[ Xen-3.3.1  x86_32p  debug=y  Not tainted ]----
(XEN) CPU:    6
(XEN) EIP:    e019:[<c02fed53>]
(XEN) EFLAGS: 00000287   EM: 1   CONTEXT: pv guest
(XEN) eax: 806f2448   ebx: 005bc000   ecx: deadbeef   edx: deadbeef
(XEN) esi: 00000000   edi: 00000002   ebp: c05bbcbc   esp: c05bbc14
(XEN) cr0: 8005003b   cr4: 000026f0   cr3: 00b70d20   cr2: c1f158c0
(XEN) ds: e021   es: e021   fs: 0000   gs: 0000   ss: e021   cs: e019
(XEN) Guest stack trace from esp=c05bbc14:
(XEN)    00000000 c02fed53 0001e019 00010087 c03c0e5e ffffffff 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 37623063 30303033
00000000
(XEN)    00000000 c03fb200 c05bbc8c c0268ea2 c0372c64 00000008 c05bbc88
c03c0a60
(XEN)    c05bbcd0 00000000 00000000 00000000 00000000 c03c0a8b c05bbcbc
c030f602
(XEN)    c03c0a60 000003ff c0372c64 c05bbcc8 00000000 00000000 00000000
005bc000
(XEN)    00000000 00000002 c05bbd3c c02fd4a5 c0382600 c05bd000 00b73000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
756e6547
(XEN)    005bc000 c03fb200 00000000 c0100063 005bc000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000


Thanks,


Anup Patil