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Re: [Xen-devel] [PATCH] xen/arm64: Use __flush_dcache_area instead of __flush_dcache_all



On Tue, 2014-10-14 at 18:07 +0100, Mark Rutland wrote:
> > Glad I'm not the only one confused :)  Getting back to the practical
> > side of this,
> > I'm thinking I (or Suravee) should update the patch to add the
> > flushing of the FDT,
> > as this is required for booting with the change to flush_dcache_area(), 
> > even if
> > the exact mechanism isn't understood.  This gets us a more correct and 
> > working
> > implementation, but not a final/robust implementation.
> 
> On a practical front, yes.
> 
> It would be nice to know if the attributes are actually the problem.
> Is it possible to build a UP Xen which maps memory as UEFI does (i.e.
> non-shareable)? Or is that problematic?

I think it would get to at least the point where you would observe these
issues, I'm not sure if/doubt that you would make it to actually booting
dom0.

Ian.


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