Re: [Xen-devel] [PATCH v3] x86: Fixup IRQs when CPUs go down during shutdown

[Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>]

On 12/04/2015 02:42 PM, Jan Beulich wrote:
> > > > On 04.12.15 at 15:01, <ross.lagerwall@xxxxxxxxxx> wrote:
> > Commit fc0c3fa2ad5c ("x86/IO-APIC: fix setup of Xen internally used IRQs
> > (take 2)") introduced a regression on some hardware where Xen would hang
> > during shutdown, repeating the following message:
> > APIC error on CPU0: 08(08), Receive accept error
> >
> > This appears to be because an interrupt (in this case from the serial
> > console) destined for a CPU other than the boot CPU is left unhandled so
> > an APIC error on CPU 0 is generated instead.
> >
> > To fix this, before taking down the non-boot CPUs, call fixup_irqs()
> > with a CPU mask of only the boot CPU to reset the IRQ affinities
> > correctly.
> >
> > Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
Is this going to go onto staging?

Thanks,
--
Ross Lagerwall

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