[Xen-devel] Re: [PATCH][FIX] Possible fix for spurious interrupts

[Arun Sharma <arun@xxxxxxxxxxxxxxx>]

I think you guys are running into the same problem that FreeBSD ran 
into on some Intel motherboards more than a year ago.

This explanation seems to make the most sense. 

http://thread.gmane.org/gmane.os.freebsd.current/67490/focus=67490

Because the problem happened on FreeBSD (which masks ioapic RTEs to
implement interrupt threads) and not on Linux, it was hard to get
attention from the hardware guys back then. I had suspected Xen
would run into it sooner or later.

        -Arun

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