ia64/xen-unstable

changeset 9782:7dc3c0bf1395

Increase size of level-2 initial PDE identity map from first 64MB of
physical RAM to first 1GB of physical RAM. This allows x86_64 xen to boot
larger dom0 images. Without this changes large dom0 images fail to
boot with "Unknown interrupt" on xen console and wedge.

Signed-off-by: Todd Clayton <todd.clayton@sun.com>
author kaf24@firebug.cl.cam.ac.uk
date Wed Apr 19 22:23:44 2006 +0100 (2006-04-19)
parents 3ff86698f394
children 4ce84cc55727
files xen/arch/x86/boot/x86_64.S
line diff
     1.1 --- a/xen/arch/x86/boot/x86_64.S	Wed Apr 19 22:23:30 2006 +0100
     1.2 +++ b/xen/arch/x86/boot/x86_64.S	Wed Apr 19 22:23:44 2006 +0100
     1.3 @@ -252,10 +252,10 @@ ENTRY(idle_pg_table_4)
     1.4  ENTRY(idle_pg_table_l3)
     1.5          .quad idle_pg_table_l2 - __PAGE_OFFSET + 7
     1.6  
     1.7 -/* Initial PDE -- level-2 page table. Maps first 64MB physical memory. */
     1.8 +/* Initial PDE -- level-2 page table. Maps first 1GB physical memory. */
     1.9          .org 0x4000
    1.10  ENTRY(idle_pg_table_l2)
    1.11 -        .macro identmap from=0, count=32
    1.12 +        .macro identmap from=0, count=512
    1.13          .if \count-1
    1.14          identmap "(\from+0)","(\count/2)"
    1.15          identmap "(\from+(0x200000*(\count/2)))","(\count/2)"