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[Xen-bugs] [Bug 59] Hypervisor enters infinite loop at boot with "(XEN)

To: xen-bugs@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-bugs] [Bug 59] Hypervisor enters infinite loop at boot with "(XEN) APIC error on CPU0: 02(02)"
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Sat, 28 May 2005 10:19:59 +0000
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------- Additional Comments From greenrd@xxxxxxxxxxx  2005-05-28 10:19 -------
> It would be interesting to find out whether you can induce native Linux to 
> suffer the same error.

Native Linux, when compiled with local APIC support on uniprocessors, actually 
says:

[4294667.296000] Local APIC disabled by BIOS -- you can enable it with "lapic"

There is no option in the BIOS that I can see to reenable it. It may, of course,
be disabled by the BIOS because it is buggy :)

Does Xen already contain code to enable a local APIC which has been disabled by
the BIOS, or is it perhaps trying to talk to my APIC without enabling it first?



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