From 2ec65f8b89ea003c27ff7723525a2ee335a2b393 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 23 Jun 2008 03:05:30 -0700 Subject: x86: clean up using max_low_pfn on 32-bit so that max_low_pfn is not changed after it is set. so we can move that early and out of initmem_init. could call find_low_pfn_range just after max_pfn is set. also could move reserve_initrd out of setup_bootmem_allocator so 32bit is more like 64bit. Signed-off-by: Yinghai Lu Signed-off-by: Ingo Molnar --- arch/x86/mm/init_32.c | 25 +++++++++---------------- 1 file changed, 9 insertions(+), 16 deletions(-) (limited to 'arch/x86/mm/init_32.c') diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index d1017336f1b..27b82931294 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -561,9 +561,15 @@ early_param("highmem", parse_highmem); /* * Determine low and high memory ranges: */ -unsigned long __init find_max_low_pfn(void) +void __init find_low_pfn_range(void) { - unsigned long max_low_pfn; + /* it could update max_pfn */ + + /* + * partially used pages are not usable - thus + * we are rounding upwards: + */ + min_low_pfn = PFN_UP(init_pg_tables_end); max_low_pfn = max_pfn; if (max_low_pfn > MAXMEM_PFN) { @@ -625,21 +631,12 @@ unsigned long __init find_max_low_pfn(void) " kernel!\n"); #endif } - return max_low_pfn; } #ifndef CONFIG_NEED_MULTIPLE_NODES -unsigned long __init initmem_init(unsigned long start_pfn, +void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn) { - /* - * partially used pages are not usable - thus - * we are rounding upwards: - */ - min_low_pfn = PFN_UP(init_pg_tables_end); - - max_low_pfn = find_max_low_pfn(); - #ifdef CONFIG_HIGHMEM highstart_pfn = highend_pfn = max_pfn; if (max_pfn > max_low_pfn) @@ -661,8 +658,6 @@ unsigned long __init initmem_init(unsigned long start_pfn, pages_to_mb(max_low_pfn)); setup_bootmem_allocator(); - - return max_low_pfn; } void __init zone_sizes_init(void) @@ -699,8 +694,6 @@ void __init setup_bootmem_allocator(void) panic("Cannot find bootmem map of size %ld\n", bootmap_size); reserve_early(bootmap, bootmap + bootmap_size, "BOOTMAP"); - reserve_initrd(); - bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, max_low_pfn); printk(KERN_INFO " mapped low ram: 0 - %08lx\n", max_pfn_mapped<