diff options
| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-06-01 21:06:31 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-03 13:26:28 +0200 |
| commit | 287572cb38de7f270b59191a0fecfa5c5de7765d (patch) | |
| tree | aa4f44ca3b2a3390faf4fc4791bdaab9119d2e98 /arch | |
| parent | 2944e16b25e7fb8b5ee0dd9dc7197a0f9e523cfd (diff) | |
x86, numa, 32-bit: avoid clash between ramdisk and kva
use find_e820_area to get address space...
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/discontig_32.c | 27 |
1 files changed, 8 insertions, 19 deletions
diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c index 3150ad38567..73a983489c6 100644 --- a/arch/x86/mm/discontig_32.c +++ b/arch/x86/mm/discontig_32.c @@ -38,6 +38,7 @@ #include <asm/setup.h> #include <asm/mmzone.h> #include <asm/bios_ebda.h> +#include <asm/proto.h> struct pglist_data *node_data[MAX_NUMNODES] __read_mostly; EXPORT_SYMBOL(node_data); @@ -326,7 +327,6 @@ unsigned long __init setup_memory(void) { int nid; unsigned long system_start_pfn, system_max_low_pfn; - unsigned long wasted_pages; /* * When mapping a NUMA machine we allocate the node_mem_map arrays @@ -337,29 +337,18 @@ unsigned long __init setup_memory(void) */ get_memcfg_numa(); - kva_pages = calculate_numa_remap_pages(); + 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_start_pfn = find_max_low_pfn() - kva_pages; - -#ifdef CONFIG_BLK_DEV_INITRD - /* Numa kva area is below the initrd */ - if (initrd_start) - kva_start_pfn = PFN_DOWN(initrd_start - PAGE_OFFSET) - - kva_pages; -#endif - - /* - * We waste pages past at the end of the KVA for no good reason other - * than how it is located. This is bad. - */ - wasted_pages = kva_start_pfn & (PTRS_PER_PTE-1); - kva_start_pfn -= wasted_pages; - kva_pages += wasted_pages; - system_max_low_pfn = max_low_pfn = find_max_low_pfn(); + kva_start_pfn = round_down(max_low_pfn - kva_pages, PTRS_PER_PTE); + kva_start_pfn = find_e820_area(kva_start_pfn<<PAGE_SHIFT, + max_low_pfn<<PAGE_SHIFT, + kva_pages<<PAGE_SHIFT, + PTRS_PER_PTE<<PAGE_SHIFT) >> PAGE_SHIFT; + printk("kva_start_pfn ~ %ld find_max_low_pfn() ~ %ld\n", kva_start_pfn, max_low_pfn); printk("max_pfn = %ld\n", max_pfn); |