Re: [Xen-devel] Xen-unstable: Regression (on AMD) host boot stuck on (XEN) testing the IO APIC.......................

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Monday, August 25, 2014, 7:54:05 PM, you wrote:

> On 25/08/14 18:12, Sander Eikelenboom wrote:
>> Hi Jan / Andrew,
>>
>> I just tried xen-unstable of today(last commit 
>> 7645640d6ff1791733c43f71590c6e2976cfa549)
>> and it fails to boot on my AMD machine, it gets stuck on:
>> "(XEN) testing the IO APIC......................." which takes forever.
>>
>> The current tree failing is: commit 7645640d6ff1791733c43f71590c6e2976cfa549
>> My last working tree when everything booted fine was: xen_changeset: Mon Aug 
>> 11 15:13:04 2014 +0200 git:f093fcf-dirty   
>>
>> Since i use the special options at boot (ivrs_ioapic[6]=00:14.0 
>> ivrs_hpet[0]=00:14.0),
>> I also tried booting without these, but that gets stuck at the same point.
>>
>> Due to time constraints i haven't been able to bisected it further.
>>
>> --
>> Sander

> Hmm - Does reverting e13b3203990706db1313ec2aadd9a30b249ee793 fix the issue?

> That is the only change in that area, but softirqs should be fine even
> by that point on boot.

> ~Andrew

Hi Andrew,

Hmm i completely overlooked that commit (it's quite evident when you look at 
the 
commitdiff :-) )

Just tested reverting that single commit and that indeed lets the machine boot 
again.

--
Sander



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