Re: [Xen-devel] [PATCH] X86/vmx: Dump PIR and vIRR before ASSERT()

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 07.02.17 at 00:32, <chao.gao@xxxxxxxxx> wrote:
> Commit c7bdecae42 ("x86/apicv: fix RTC periodic timer and apicv issue") has
> added a assertion that intack.vector is the highest priority vector. But
> according to the osstest, the assertion failed sometimes. More discussion can
> be found in the thread
> (https://lists.xenproject.org/archives/html/xen-devel/2017-01/msg01019.html).
> 
> The assertion failure is hard to reproduce. In order to root cause issue, this
> patch is to add logs to dump PIR and vIRR when failure takes place. It should
> be reverted once the root cause is found.
> 
> Signed-off-by: Chao Gao <chao.gao@xxxxxxxxx>

If this wasn't just a temporary thing, I'd have some comments, but
it's good enough (perhaps with a little massaging when committing)
for this purpose.

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

Ian, Wei, is there a way to automatically scan osstest logs for
occurrences of the extra output, or does someone need to look
through the logs of every spurious failure?

Jan


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