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[Xen-devel] [BUG] -- unable to boot 4.5-unstable after commit e13b3203990706db1313ec2aadd9a30b249ee793

dcs-xen-54:~/xen>git-bisect good
e13b3203990706db1313ec2aadd9a30b249ee793 is the first bad commit
commit e13b3203990706db1313ec2aadd9a30b249ee793
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date:   Fri Aug 22 14:32:45 2014 +0200

    x86/irq: process softirqs in irq keyhandlers

    Large machines with lots of interrupts can trip over the Xen watchdog.

    Suggested-by: Santosh Jodh <Santosh.Jodh@xxxxxxxxxx>
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Tested-by: Santosh Jodh <Santosh.Jodh@xxxxxxxxxx>

:040000 040000 d43de46a55f8ca96c6bbcb0fcc8b705d439d44c8 e949c76ae45ecb1a6e1d5fce9ada5b89712fbd87 M xen

This patch prevents xen from booting on my hardware.

Here is the tail of the serial console output:

(XEN) IO-APIC (apicid-pin) 0-0, 0-16, 0-17, 0-18, 0-19, 0-20, 0-21, 0-22, 0-23 not connected.
(XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
(XEN) number of MP IRQ sources: 15.
(XEN) number of IO-APIC #0 registers: 24.
(XEN) testing the IO APIC.......................

    -Don Slutz

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