[RFC PATCH 12/12] PAT 64b: skip attr tracking for RAM

For now, track the page attribute only for reserved regions (specified as reserved in e820 or not present in e820 at all). As we don't have the kernel identity mappings for these regions, existing simple infrastructure of memattr list is enough. Otherwise we need to keep track of the actual

[RFC PATCH 12/12] PAT 64b: skip attr tracking for RAM

For now, track the page attribute only for reserved regions (specified as reserved in e820 or not present in e820 at all). As we don't have the kernel identity mappings for these regions, existing simple infrastructure of memattr list is enough. Otherwise we need to keep track of the actual