high_mem_start 30 arch/arc/mm/init.c static u64 high_mem_start; high_mem_start 68 arch/arc/mm/init.c high_mem_start = base; high_mem_start 168 arch/arc/mm/init.c min_high_pfn = PFN_DOWN(high_mem_start); high_mem_start 169 arch/arc/mm/init.c max_high_pfn = PFN_DOWN(high_mem_start + high_mem_sz);