port-emips/45080: emips GENERIC kernel doesn't boot

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

>Number:         45080
>Category:       port-emips
>Synopsis:       emips GENERIC kernel doesn't boot
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-emips-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 17 16:05:00 +0000 2011
>Originator:     Izumi Tsutsui
>Release:        NetBSD 5.99.52
>Organization:
>Environment:
System: NetBSD/emips 5.99.52 around 20110612 on Microsoft Giano on Windows XP
Architecture: mipseb
Machine: emips
>Description:
NetBSD/emips GENERIC kernel hangs right after interrupts are enabled.
It spins in cpu_intr() because splintr() returns ipending==MIPS_INT_MASK_5
while no interrupts are asserted in TheAic->IrqStatus in emips_aic_intr().

5.99.44 GENERIC kernel around 20110130 worked fine.

>How-To-Repeat:
Boot -current NetBSD/emips GENERIC kernel on Microsoft Giano.

>Fix:
Unknown.