[Xen-bugs] [Bug 893] New: Unable to boot Xen with large vmlinux image on PPC

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=893

           Summary: Unable to boot Xen with large vmlinux image on PPC
           Product: Xen
           Version: unstable
          Platform: PPC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: jyoung5@xxxxxxxxxx


On PPC currently if you specify during compilation of Xen and Dom0_Image that
is  large (ex. vmlinux witch is ~64MB, instead of the zImage witch is ~5MB).
Your boot up sequence will look like the following snippet (as seen on JS21):
<snip>

The currently active flashside is: 1 (temporary)
Stopping BMC watchdog...
Trying to load: sync_console debug || root=/dev/sda3 debug from:
net ... 

 Bootloader 1.5 
  Reading MAC address from device: 00:14:5E:9C:1C:C5
  Requesting IP address via BOOTP: 9.3.189.7
  Requesting file "leaf4" via TFTP
  Receiving data: ####A#######A|
  TFTP: Received leaf4 (65359 KBytes)
  Successfully loaded 
---------------------------------------------------
OF: Xen/PPC version 3.0-unstable (root@xxxxxxxxxxxxxx) (gcc version
4.1.0 (SUSE Linux)) Tue Feb  6 17:18:51 CST 2007
boot_of_init args: 0x0 0x0 0xe11027c 0xe28bed2 0x2a
boot msr: 0x1000000000003000
boot_of_init: _start 00000000004000d0 _end 00000000042b0310 0xe28bed2
boot_of_alloc_init: pg :0x2000 of our image is different

HANG

</snip>

This has only currently been seen when loading via TFTP.

I theorize that this may have something to do with the 64MB limit on tftp. But
hva no real evidence to show this at this time.


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