Re: [Xen-devel] Xen 4.7.0 boot PANIC on kernel 4.7.0-4 + UEFI ?

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On Wed, Jul 27, 2016, at 09:34 AM, Andrew Cooper wrote:
> This looks suspiciously like the issue which was fixed by c/s
> d6b186c1e2d852a92c43f090d0d8fad4704d51ef "x86/xen: avoid m2p lookup when
> setting early page table entries", but that fix is present in Linux 4.7.0
> 
> Can you check to see whether the commit is included in your kernel?
> 
> Failing that, can you find out exactly where the kernel crashed?  You
> need to manually decode ffffffff81f6374c with the debug symbols.
> 
> ~Andrew

Is an eventual fix to whatever is causing this crash likely in the kernel or 
Xen code?

I've managed to try a couple of different kernels, older version, with no luck. 
 Crash still happens.

Getting my hands on an older Xen package is turning out to be a bit tougher.  
Still working on it.

Not sure what specifically changed to break this , since this server clearly 
was running not that long ago.

I'd like to at least figure out what I can drop back to so I can get my server 
and guests back up and running.

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