Re: [Xen-devel] Fwd: Debugging "Xen BUG at ... list.h" on ARM

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2014-04-14 at 12:03 +0100, Thomas Leonard wrote:
> On 14 April 2014 11:29, Julien Grall <julien.grall@xxxxxxxxxx> wrote:
> > On 04/14/2014 11:10 AM, Thomas Leonard wrote:
> >>> Has your guest enabled caching (SCTLR.C)? This is required by the
> >>> hypercall ABI. See
> >>> http://xenbits.xen.org/docs/unstable/hypercall/arm/include,public,arch-arm.h.html#incontents_arm_abi
> >>
> >> Here's my attempt to set up the translation table and enable caching:
> >>
> >> https://github.com/talex5/xen-paratest/tree/cache-problem
> >
> > Your page table looks wrong for me. Each page table should be write-back
> > or write-through.
> 
> Thanks - that fixed my test case!

Excellent.

Can you also just confirm for my peace of mind that the hypervisor crash
was only reproducible with a locally modified hypervisor?

Ian.


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