[RFC] Device memory mappings for Dom0 on ARM64 ACPI systems

[Jan Beulich]

>>> On 17.01.17 at 23:20, <sstabellini at kernel.org> wrote:
> b) Otherwise, we could write an alternative implementation of ioremap
> on arm64. The Xen specific ioremap would request a stage-2 mapping
> first, then create the stage-1 mapping as usual. However, this means
> issuing an hypercall for every ioremap call.

+1 for this being the best choice among the ones listed. In fact
this may also be a reasonable approach for PVHv2, unless facing
resistance by the x86 maintainers.

Jan