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From: Ross Lagerwall <ross.lagerwall@citrix.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>, xen-devel@lists.xen.org
Subject: Re: [PATCH v3] x86: Fixup IRQs when CPUs go down during shutdown
Date: Thu, 10 Dec 2015 09:21:27 +0000	[thread overview]
Message-ID: <56694417.5050307@citrix.com> (raw)
In-Reply-To: <5661B44A02000078000BC247@prv-mh.provo.novell.com>

On 12/04/2015 02:42 PM, Jan Beulich wrote:
>>>> On 04.12.15 at 15:01, <ross.lagerwall@citrix.com> 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@citrix.com>
>
> Reviewed-by: Jan Beulich <jbeulich@suse.com>
>

Is this going to go onto staging?

Thanks,
-- 
Ross Lagerwall

  reply	other threads:[~2015-12-10  9:21 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-04 14:01 [PATCH v3] x86: Fixup IRQs when CPUs go down during shutdown Ross Lagerwall
2015-12-04 14:39 ` Andrew Cooper
2015-12-04 14:42 ` Jan Beulich
2015-12-10  9:21   ` Ross Lagerwall [this message]
2015-12-10  9:28     ` Jan Beulich
2015-12-10  9:38       ` Ross Lagerwall

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