HelenOS sources

MMU_PAGES_PER_PAGE   54 kernel/arch/sparc64/include/arch/mm/page.h #define MMU_PAGES_PER_PAGE	(1 << (PAGE_WIDTH - MMU_PAGE_WIDTH))
MMU_PAGES_PER_PAGE   46 kernel/arch/sparc64/include/arch/mm/sun4v/page.h #define MMU_PAGES_PER_PAGE	(1 << (PAGE_WIDTH - MMU_PAGE_WIDTH))
HelenOS homepage, sources at GitHub