BUG in Xen4's HVM LAPIC?

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* BUG in Xen4's HVM LAPIC?
@ 2012-03-05 17:22 zhefu jiang
  2012-03-13 16:26 ` Konrad Rzeszutek Wilk
  0 siblings, 1 reply; 3+ messages in thread
From: zhefu jiang @ 2012-03-05 17:22 UTC (permalink / raw)
  To: xen-devel


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Hi

It seems that the Xen4.1's HVM LAPIC clock for HVM fails to function
normally, the guest OS cannot receive interrupts and Linux chooses to use
PIT based TSC timer.  Is there any change from Xen3.x with respect of this?
Thanks

- Zhefu

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_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: BUG in Xen4's HVM LAPIC?
  2012-03-05 17:22 BUG in Xen4's HVM LAPIC? zhefu jiang
@ 2012-03-13 16:26 ` Konrad Rzeszutek Wilk
  2012-03-13 16:38   ` zhefu jiang
  0 siblings, 1 reply; 3+ messages in thread
From: Konrad Rzeszutek Wilk @ 2012-03-13 16:26 UTC (permalink / raw)
  To: zhefu jiang; +Cc: xen-devel

On Mon, Mar 05, 2012 at 12:22:32PM -0500, zhefu jiang wrote:
> Hi
> 
> It seems that the Xen4.1's HVM LAPIC clock for HVM fails to function
> normally, the guest OS cannot receive interrupts and Linux chooses to use
> PIT based TSC timer.  Is there any change from Xen3.x with respect of this?

Huh? Can you be more specific? What kind of guest? 
> Thanks
> 
> - Zhefu

> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: BUG in Xen4's HVM LAPIC?
  2012-03-13 16:26 ` Konrad Rzeszutek Wilk
@ 2012-03-13 16:38   ` zhefu jiang
  0 siblings, 0 replies; 3+ messages in thread
From: zhefu jiang @ 2012-03-13 16:38 UTC (permalink / raw)
  To: Konrad Rzeszutek Wilk; +Cc: xen-devel


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Thanks for reply, I found out that it was due to the TSC Deadline mode. The
system was ok after I disabled it from xen's boot parameter.

2012/3/13 Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

> On Mon, Mar 05, 2012 at 12:22:32PM -0500, zhefu jiang wrote:
> > Hi
> >
> > It seems that the Xen4.1's HVM LAPIC clock for HVM fails to function
> > normally, the guest OS cannot receive interrupts and Linux chooses to use
> > PIT based TSC timer.  Is there any change from Xen3.x with respect of
> this?
>
> Huh? Can you be more specific? What kind of guest?
> > Thanks
> >
> > - Zhefu
>
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xen.org
> > http://lists.xen.org/xen-devel
>
>

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_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2012-03-13 16:38 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2012-03-05 17:22 BUG in Xen4's HVM LAPIC? zhefu jiang
2012-03-13 16:26 ` Konrad Rzeszutek Wilk
2012-03-13 16:38   ` zhefu jiang

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