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Subject: Re: Xen dom0 crash
To: "Eggert, Lars" <lars@netapp.com>
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CC: Roman Bogorodskiy <novel@FreeBSD.org>, "freebsd-xen@freebsd.org"
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From: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= <roger.pau@citrix.com>
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Date: Wed, 21 Oct 2015 14:34:07 +0200
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El 21/10/15 a les 11.51, Eggert, Lars ha escrit:
> On 2015-10-21, at 11:11, Roger Pau Monné <roger.pau@citrix.com> wrote:
>> Are you loading hwpmc by default?
> 
> Yes.
> 
>> Performance monitor counters are not
>> yet implemented in the FreeBSD PVH port, so you should not load hwpmc. I
>> have to look at providing an error message here rather than panicking.
> 
> Strange, the same kernel config worked earlier. But without hwmpc, the it now boots.

It might well be that Xen is exposing different cpuid flags in 4.6 vs
4.5, and that makes hwpmc attach. All the cpuid stuff in PVH is still
in-flux.

Roger.