[Xen-devel] Re: [PATCH] IRQ handling race and spurious IIR read in serial/8250.c

[Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>]

> Ian Jackson recently debugged a problem reported by Anders Kaseorg, and
> posted a fix (see http://lkml.org/lkml/2009/2/11/240).  As far as I can
> see, the patch has been dropped on the floor.

It was proposed as a band aid fix not a real fix. The real fix involves
finishing sorting out any locking issues Ian identified. I've not seen a
patch for that yet.

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