Re: [Xen-devel] cpuidle and un-eoid interrupts at the local apic

["Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx>]

Hi Thimo,

 

Can you provide the xen boot log?

 

Best regards,

Yang

 

From: xen-devel-bounces@xxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxx] On Behalf Of Thimo E.
Sent: Monday, August 12, 2013 1:47 AM
To: Andrew Cooper
Cc: Keir Fraser; Jan Beulich; Dong, Eddie; Xen-develList; Nakajima, Jun; Zhang, Xiantao
Subject: Re: [Xen-devel] cpuidle and un-eoid interrupts at the local apic

 

Hello again,

attached you'll find another crash dump from today. Don't know if it gives you more information than the last one.

Just FYI, this is a system with an Intel Mainboard (H87 chipset) and a Core i5-4670 CPU.

Best regards
  Thimo

Am 09.08.2013 23:44, schrieb Andrew Cooper:

On 09/08/13 22:40, Andrew Cooper wrote:

So according to my debugging, we really have just pushed the same irq which we have subsequently seen again unexpectedly.

This bug has only ever been seen on Haswell hardware, and appears linked to running HVM guests.

So either there is an erroneous ACK the LAPIC which is clearing the ISR before the PEOI stack is expecting (which I

"can't"

Apologies for the confusion.

~Andrew

obviously see, looking at the code), or something more funky is going on with the hardware.

CC'ing in the Intel maintainers:  Do you have any ideas?  Could this be related to APICv?

~Andrew

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