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| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-06-23 12:05:30 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 12:50:20 +0200 |
| commit | 2ec65f8b89ea003c27ff7723525a2ee335a2b393 (patch) | |
| tree | 9b8718be2017f619b2a0185492315b85ea1731fa /arch/x86/mm/discontig_32.c | |
| parent | x86: move reservetop and vmalloc parsing to pgtable_32.c (diff) | |
| download | linux-2ec65f8b89ea003c27ff7723525a2ee335a2b393.tar.xz linux-2ec65f8b89ea003c27ff7723525a2ee335a2b393.zip | |
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 <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/discontig_32.c')
| -rw-r--r-- | arch/x86/mm/discontig_32.c | 22 |
1 files changed, 7 insertions, 15 deletions
diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c index 3e75be46c4f2..1dfff700264c 100644 --- a/arch/x86/mm/discontig_32.c +++ b/arch/x86/mm/discontig_32.c @@ -309,11 +309,10 @@ static void init_remap_allocator(int nid) (ulong) node_remap_end_vaddr[nid]); } -unsigned long __init initmem_init(unsigned long start_pfn, +void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn) { int nid; - unsigned long system_start_pfn, system_max_low_pfn; long kva_target_pfn; /* @@ -324,17 +323,11 @@ unsigned long __init initmem_init(unsigned long start_pfn, * and ZONE_HIGHMEM. */ - /* call find_max_low_pfn at first, it could update max_pfn */ - system_max_low_pfn = max_low_pfn = find_max_low_pfn(); - remove_all_active_ranges(); get_memcfg_numa(); kva_pages = round_up(calculate_numa_remap_pages(), PTRS_PER_PTE); - /* partially used pages are not usable - thus round upwards */ - system_start_pfn = min_low_pfn = PFN_UP(init_pg_tables_end); - kva_target_pfn = round_down(max_low_pfn - kva_pages, PTRS_PER_PTE); do { kva_start_pfn = find_e820_area(kva_target_pfn<<PAGE_SHIFT, @@ -357,19 +350,19 @@ unsigned long __init initmem_init(unsigned long start_pfn, "KVA PG"); #ifdef CONFIG_HIGHMEM highstart_pfn = highend_pfn = max_pfn; - if (max_pfn > system_max_low_pfn) - highstart_pfn = system_max_low_pfn; + if (max_pfn > max_low_pfn) + highstart_pfn = max_low_pfn; printk(KERN_NOTICE "%ldMB HIGHMEM available.\n", pages_to_mb(highend_pfn - highstart_pfn)); num_physpages = highend_pfn; high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1; #else - num_physpages = system_max_low_pfn; - high_memory = (void *) __va(system_max_low_pfn * PAGE_SIZE - 1) + 1; + num_physpages = max_low_pfn; + high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1; #endif printk(KERN_NOTICE "%ldMB LOWMEM available.\n", - pages_to_mb(system_max_low_pfn)); - printk("min_low_pfn = %ld, max_low_pfn = %ld, highstart_pfn = %ld\n", + pages_to_mb(max_low_pfn)); + printk("min_low_pfn = %ld, max_low_pfn = %ld, highstart_pfn = %ld\n", min_low_pfn, max_low_pfn, highstart_pfn); printk("Low memory ends at vaddr %08lx\n", @@ -387,7 +380,6 @@ unsigned long __init initmem_init(unsigned long start_pfn, memset(NODE_DATA(0), 0, sizeof(struct pglist_data)); NODE_DATA(0)->bdata = &node0_bdata; setup_bootmem_allocator(); - return max_low_pfn; } void __init zone_sizes_init(void) |