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Re: [Xen-devel] 3.4.70+ kernel WARNING spew dysfunction on failed migration



On 01/07/2014 02:36 PM, Boris Ostrovsky wrote:
On 01/07/2014 02:23 PM, Ian Jackson wrote:
Konrad Rzeszutek Wilk writes ("Re: 3.4.70+ kernel WARNING spew dysfunction on failed migration"):
On Tue, Jan 07, 2014 at 06:55:56PM +0000, Ian Jackson wrote:
For reasons I don't understand it doesn't seem to print the actual
kernel git hash in dmesg, but I think it was that from flight 22264,
i.e.  234d96ee0f3b8e49501d068a2a3165aa4db60903.  It's i386, on a
64-bit Xen.
This a bit of ancient kernel. Does it show up with 3.12?
3.4.70 is what the osstest push gate is using.  (ISTR trying to switch
to 3.11 but encountering some problem.)

I haven't tried 3.12 but can do so.

Ian.

This is hypercall failing, btw:

https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/drivers/xen/events.c?id=refs/tags/v3.4.75#n1582

More specifically, it fails

    if ( v->virq_to_evtchn[virq] != 0 )
        ERROR_EXIT(-EEXIST);

in Xen's evtchn_bind_virq().

Would be interesting to see if this is still a problem in new kernels.

-boris

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