* Vaidyanathan Srinivasan [2015-06-25 11:45:46]:
[snip]
> Hi Ben,
>
> remap_pfn_range() is the correct method to map the firmware pages
> because we will not have struct page associated with this RAM area.
>
> We do a memblock_reserve() in early boot and take out this memory from
> kernel and
* Vaidyanathan Srinivasan [2015-06-21 23:56:16]:
> opal-prd driver will mmap() firmware code/data area as private
> mapping to prd user space daemon. Write to this page will
> trigger COW faults. The new COW pages are normal kernel RAM
> pages accounted by the kernel and are not special.
>
> v
