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

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Fri, Jul 29, 2016 at 07:36:57AM -0700, lists@xxxxxxxxxxxx wrote:
> 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.

did you apply the patch that Vitaly pointed out?
> 
> 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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