Hello Vijay,
On 13/03/17 11:43, vijay.kil...@gmail.com wrote:
From: Vijaya Kumar K <vijaya.ku...@cavium.com>
On ARM, virt_to_mfn uses the hardware for address
translation. So if the virtual address is not mapped translation
fault is raised.On ARM, DIRECTMAP_VIRT region is direct mapped.
This is not true. As I said before, all the memory will be direct mapped
on ARM64 but not on ARM32.
For ARM32, only xenheap will be direct mapped. So you may want to return
is_xenheap_mfn(...). Or even return false in all the case. Either is
fine by me, but it would need to be explained in the code.
Regards,
--
Julien Grall
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