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[Xen-bugs] [Bug 877] New: Ubuntu Dapper install cd fails to boot in HVM

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Subject: [Xen-bugs] [Bug 877] New: Ubuntu Dapper install cd fails to boot in HVM (unknown opcode)
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Date: Tue, 30 Jan 2007 14:17:31 -0800
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           Summary: Ubuntu Dapper install cd fails to boot in HVM (unknown
           Product: Xen
           Version: unspecified
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P3
         Component: HVM
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: jclemens@xxxxxxxxxxxxxxxxx

I suspect the VTX emulation code is missing something needed by Ubuntu Dapper's
install ISO. When you try and boot from the server install iso, you get a blank
screen and this is 'xm dmesg':

Booting from CD-Rom...
Unknown opcode at 4004:153B=0x4157B
Halt called from %eip 0xD37FA

this happend with both xen-3.0.3 and xen 3.0.4 binary tarballs (community)

This is with the ubuntu-6.06.1-server-amd64.iso available at:

It also fails for ubuntu 6.10 ISOs.  I have not been able to test this on an
AMD machine to see if SVN does any better.

Interestingly, the mini netboot iso available here works fine:

To reproduce, just grab one of those isos and try booting from the cdrom image.

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