Pkg xen devel - Sep 2015 - Bug#795330: [Xen-devel] Bug#795330: Suggests noapic but doesn't support it

On 04/09/15 14:38, Ian Campbell wrote:
> Control: tag -1 upstream 
> 
> Jan/Andy & David,
> 
> Is there anything we can improve here on either the Xen or kernel side do
> you think?
> 
> On Thu, 2015-08-13 at 00:59 +0200, Guido G?nther wrote:
>> Package: xen-hypervisor-4.5-amd64
>> Severity: normal
>>
>> Hi,
>> when running xen inside of kvm the hypervisor fails to set up the
proper
>> IRQ routing and suggests to use noapic.
> 
> FTR, it seems to say:
> 
>     panic("IO-APIC + timer doesn't work!  Boot with
apic_verbosity=debug "
>           "and send a report.  Then try booting with the
'noapic' option");
This is the Linux kernel making a recommendation for its command line.
> Did you also try the first thing it suggested? What was the result?
> 
>>  If you add this via
>>
>>     GRUB_CMDLINE_XEN_DEFAULT
>>
>> it will boot futher but then report that noapic isn't supported.
Don't add Linux command line options to the Xen command line.

David

On Fri, 2015-09-04 at 15:04 +0100, David Vrabel wrote:
> On 04/09/15 14:38, Ian Campbell wrote:
> > Control: tag -1 upstream 
> > 
> > Jan/Andy & David,
> > 
> > Is there anything we can improve here on either the Xen or kernel side
> > do
> > you think?
> > 
> > On Thu, 2015-08-13 at 00:59 +0200, Guido G?nther wrote:
> > > Package: xen-hypervisor-4.5-amd64
> > > Severity: normal
> > > 
> > > Hi,
> > > when running xen inside of kvm the hypervisor fails to set up the
> > > proper
> > > IRQ routing and suggests to use noapic.
> > 
> > FTR, it seems to say:
> > 
> >     panic("IO-APIC + timer doesn't work!  Boot with 
> > apic_verbosity=debug "
> >           "and send a report.  Then try booting with the
'noapic'
> > option");
> 
> This is the Linux kernel making a recommendation for its command line.
I cut-n-paste that message from xen.git. Although maybe in a file which
originates in Linux.

(So now I realised I don't really know which entity was complaining)
> > Did you also try the first thing it suggested? What was the result?
> > 
> > >  If you add this via
> > > 
> > >     GRUB_CMDLINE_XEN_DEFAULT
> > > 
> > > it will boot futher but then report that noapic isn't
supported.
> 
> Don't add Linux command line options to the Xen command line.
> 
> David
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel at lists.xen.org
> http://lists.xen.org/xen-devel

On 04/09/15 15:13, Ian Campbell wrote:
> On Fri, 2015-09-04 at 15:04 +0100, David Vrabel wrote:
>> On 04/09/15 14:38, Ian Campbell wrote:
>>> Control: tag -1 upstream 
>>>
>>> Jan/Andy & David,
>>>
>>> Is there anything we can improve here on either the Xen or kernel
side
>>> do
>>> you think?
>>>
>>> On Thu, 2015-08-13 at 00:59 +0200, Guido G?nther wrote:
>>>> Package: xen-hypervisor-4.5-amd64
>>>> Severity: normal
>>>>
>>>> Hi,
>>>> when running xen inside of kvm the hypervisor fails to set up
the
>>>> proper
>>>> IRQ routing and suggests to use noapic.
>>>
>>> FTR, it seems to say:
>>>
>>>     panic("IO-APIC + timer doesn't work!  Boot with 
>>> apic_verbosity=debug "
>>>           "and send a report.  Then try booting with the
'noapic'
>>> option");
>>
>> This is the Linux kernel making a recommendation for its command line.
> 
> I cut-n-paste that message from xen.git. Although maybe in a file which
> originates in Linux.
> 
> (So now I realised I don't really know which entity was complaining)
Oh, in which case removing (from Xen) the recommendation to try noapic
might be useful.

David

>>> On 04.09.15 at 16:13, <ijc at debian.org> wrote:
> On Fri, 2015-09-04 at 15:04 +0100, David Vrabel wrote:
>> On 04/09/15 14:38, Ian Campbell wrote:
>> > On Thu, 2015-08-13 at 00:59 +0200, Guido G?nther wrote:
>> > > Package: xen-hypervisor-4.5-amd64
>> > > Severity: normal
>> > > 
>> > > Hi,
>> > > when running xen inside of kvm the hypervisor fails to set up
the
>> > > proper
>> > > IRQ routing and suggests to use noapic.
>> > 
>> > FTR, it seems to say:
>> > 
>> >     panic("IO-APIC + timer doesn't work!  Boot with 
>> > apic_verbosity=debug "
>> >           "and send a report.  Then try booting with the
'noapic'
>> > option");
>> 
>> This is the Linux kernel making a recommendation for its command line.
> 
> I cut-n-paste that message from xen.git. Although maybe in a file which
> originates in Linux.
> 
> (So now I realised I don't really know which entity was complaining)
The reference to apic_verbosity= makes it Xen (Linux uses apic= here).

Jan