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| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-06-24 21:57:29 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 11:10:36 (GMT) |
| commit | d86623a0d55a14e7295e8ca1bd258e0c7f8dcb31 (patch) | |
| tree | c036b459354461d5bcf975d125ea338a213f2177 /arch/x86 | |
| parent | 1a0db38e5fa50eeb885194b1f4e494d4de55b918 (diff) | |
| download | linux-d86623a0d55a14e7295e8ca1bd258e0c7f8dcb31.tar.xz | |
x86: add table_top check for alloc_low_page in 64 bit
that range is from find_e820_area, so don't try to use end_pfn to see
if out of boundary...use table_top instead to avoid possible strange
result while cross the boundary...
also change early_printk to printk, because init_memory_mapping is after
early param parsing, and console=uart8250 already working at that time.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/mm/init_64.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 359e3af..6eced2f 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -227,6 +227,7 @@ void __init cleanup_highmap(void) static unsigned long __initdata table_start; static unsigned long __meminitdata table_end; +static unsigned long __meminitdata table_top; static __meminit void *alloc_low_page(unsigned long *phys) { @@ -240,7 +241,7 @@ static __meminit void *alloc_low_page(unsigned long *phys) return adr; } - if (pfn >= end_pfn) + if (pfn >= table_top) panic("alloc_low_page: ran out of memory"); adr = early_ioremap(pfn * PAGE_SIZE, PAGE_SIZE); @@ -372,10 +373,10 @@ static void __init find_early_table_space(unsigned long end) table_start >>= PAGE_SHIFT; table_end = table_start; + table_top = table_start + (tables >> PAGE_SHIFT); - early_printk("kernel direct mapping tables up to %lx @ %lx-%lx\n", - end, table_start << PAGE_SHIFT, - (table_start << PAGE_SHIFT) + tables); + printk(KERN_DEBUG "kernel direct mapping tables up to %lx @ %lx-%lx\n", + end, table_start << PAGE_SHIFT, table_top << PAGE_SHIFT); } static void __init init_gbpages(void) |