Re: dom0 kernel profiling on Xen

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Mon, Apr 11, 2016 at 03:50:25PM +0200, Manuel Bouyer wrote:
>[...]
> I get a hard hang, it seems that interrupts are not re-enabled.
> *But* I get the same hard hang with GENERIC, so it seems that profiling
> is generally broken (at last on amd64) in HEAD these days.

This is because of the mcount call in __cpu_simple_unlock().
I don't know why this one doesn't cause a stack overflow.

I commited a fix for this, and for Xen's mcount helper funtions.
Kernel profiling in HEAD should work again for bare-metal and Xen guests.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
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