search for: page_kernel_io_nocache

...all non-RAM pages in xen_set_identity_and_release(). I currently don''t map all at front, but as needed looking at the PAGE_IO bit in the pte. One result of that is minor change to common code macro: __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE) to to __set_fixmap(idx, phys, PAGE_KERNEL_IO_NOCACHE) To avoid this change, and keep all my changes limited to xen files only, I thought I could just map the entire non-ram pages up front too. But I am concerned the EPT may grow too large? Specially, when we get to *really* large NUMA boxes. What do you guys think? Should I worry about it? thanks...