kern/41524: mdec/boot multiboot problem with xen kernel

[mk%kilbi.de@localhost]

>Number:         41524
>Category:       kern
>Synopsis:       -current's mdec/boot is no longer capable to multiboot xen 
>kernels
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jun 02 14:50:01 +0000 2009
>Originator:     Markus W Kilbinger
>Release:        NetBSD 5.99.13
>Organization:
>Environment:
        
        
System: NetBSD qie 5.99.13 NetBSD 5.99.13 (Q) #1: Tue Jun  2 15:48:03 MEST 2009 
 root@q:/usr/u/NetBSD/HEAD/src/sys/arch/amd64/compile/Q amd64
Architecture: x86_64
Machine: amd64
>Description:

        -current's /usr/mdec/boot is no longer capable to multiboot
        xen kernels:

          http://nice.afraid.org/multiboot-xen-prob/DSCF2640.PNG

        After my report around March this year

          http://mail-index.netbsd.org/port-xen/2009/03/22/msg004864.html

        quite the same problem (beside others) disappered suddenly, so
        I did not send-pr at that time. But no it's back!

        Rebuild everything from scratch did not help.

        Excerpt of my /boot.cfg:

          menu=Boot Xen 3.3 customized:load /netbsd-DOM0 console=pc; multiboot 
/xen33.gz dom0_mem=2097152

        which was working before.

        I also checked releng's mdec/boot versions (amd64 + i386)
        which show the same problem.
>How-To-Repeat:
        Try to multiboot a -current based xen33 kernel/system w/
        NetBSD's mdec/boot.
>Fix:
        Not exactly tested, but mdec/boot of -current about one month
        ago should work.

>Unformatted: