Re: [Xen-devel] [PATCH 0/6] iomem cacheability

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 6 Mar 2019, Amit Tomer wrote:
> Hi,
> > Looking at the stack trace, this is very likely due to the issue I pointed 
> > out earlier on. I.e reserved-memory region should be described in the 
> > memory nodes.
> 
> Do you mean, something like this(reserved-memory node is under memory node) ?

No, I think Julien meant that all the reserved-memory regions ranges
should be "covered" by the ranges of the memory node.

If a reserved-memory node range is 0x54000000 - 0x57000000, then we need
to make sure that the memory node includes that range. In your case, the
first memory bank is 0x48000000 - 0x80000000 so it would clearly include
the range 0x54000000 - 0x57000000. So, it looks like it is correct from
that point of view.

I am suspecting there is a bug in the patch "xen/arm: map
reserved-memory regions as normal memory in dom0", specifically in the
implementation of check_reserved_memory.

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