[PATCH 1/9] x86/mm/64: Make __PHYSICAL_MASK_SHIFT always 52

__PHYSICAL_MASK_SHIFT is used to define the mask that helps to extract physical address from a page table entry. Although, real physical address space available may differ between machines, it's safe to use 52 as __PHYSICAL_MASK_SHIFT. Unused bits above log2(MAXPHYADDR) up to bit 51 are reserved

[PATCH 1/9] x86/mm/64: Make __PHYSICAL_MASK_SHIFT always 52

__PHYSICAL_MASK_SHIFT is used to define the mask that helps to extract physical address from a page table entry. Although, real physical address space available may differ between machines, it's safe to use 52 as __PHYSICAL_MASK_SHIFT. Unused bits above log2(MAXPHYADDR) up to bit 51 are reserved