Messages in this thread Patch in this message | | | From | Yinghai Lu <> | Subject | [PATCH] x86: cleanup min_low_pfn | Date | Mon, 23 Jun 2008 03:06:14 -0700 |
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for 32bit we already had early_res support, so don't need to track min_low_pfn. keep it to 0 always.
also use init_bootmem_node instead of init_bootmem, so don't touch min_low_pfn.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
--- arch/x86/mm/init_32.c | 10 ++++------ arch/x86/mm/init_64.c | 4 +++- 2 files changed, 7 insertions(+), 7 deletions(-)
Index: linux-2.6/arch/x86/mm/init_32.c =================================================================== --- linux-2.6.orig/arch/x86/mm/init_32.c +++ linux-2.6/arch/x86/mm/init_32.c @@ -565,11 +565,7 @@ void __init find_low_pfn_range(void) { /* 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 is 0, we already have early_res support */ max_low_pfn = max_pfn; if (max_low_pfn > MAXMEM_PFN) { @@ -694,7 +690,9 @@ void __init setup_bootmem_allocator(void panic("Cannot find bootmem map of size %ld\n", bootmap_size); reserve_early(bootmap, bootmap + bootmap_size, "BOOTMAP"); - bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, max_low_pfn); + /* don't touch min_low_pfn */ + bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap >> PAGE_SHIFT, + min_low_pfn, max_low_pfn); printk(KERN_INFO " mapped low ram: 0 - %08lx\n", max_pfn_mapped<<PAGE_SHIFT); printk(KERN_INFO " low ram: %08lx - %08lx\n", Index: linux-2.6/arch/x86/mm/init_64.c =================================================================== --- linux-2.6.orig/arch/x86/mm/init_64.c +++ linux-2.6/arch/x86/mm/init_64.c @@ -633,7 +633,9 @@ void __init initmem_init(unsigned long s PAGE_SIZE); if (bootmap == -1L) panic("Cannot find bootmem map of size %ld\n", bootmap_size); - bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, end_pfn); + /* don't touch min_low_pfn */ + bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap >> PAGE_SHIFT, + 0, end_pfn); e820_register_active_regions(0, start_pfn, end_pfn); free_bootmem_with_active_regions(0, end_pfn); early_res_to_bootmem(0, end_pfn<<PAGE_SHIFT);
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