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

[Ian Campbell <ijc@xxxxxxxxxx>]

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 GÃnther 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
> 
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