On 13/10/15 15:55, Stefano Stabellini wrote:
> Hi Brijesh,
> 
> passing EFI tables to dom0 is still under work by Shannon, see:
> http://marc.info/?l=xen-devel&m=144321258920213. For now you could
> simply reuse the existing linux uefi device tree nodes, see
> Documentation/arm/uefi.txt and the existing acpi patch series for Xen,
> which also introduces passing efi tables to dom0:
> http://marc.info/?l=xen-devel&m=143189314630953.
> 
> Once dom0 knows about efi, then it is just a matter of enabling the
> existing PV runtime services on arm64, see drivers/xen/efi.c.

That's not true. There is work to do in Xen in order to support efi
runtime. The hypercall to call runtime services (XENPF_efi_runtime_call)
is not plumbed and most of the code in common/efi/runtime.c is not built.

Regards,

-- 
Julien Grall

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