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[PATCH] x86_64: miscellaneous mm/init.c fixes 

- fix an off-by-one error in phys_pmd_init()
 - prevent phys_pmd_init() from removing mappings established earlier
 - fix the direct mapping early printk to in fact show the end of the range
 - remove an apparently orphan comment

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Beulich 2006-06-26 13:59:02 +02:00 committed by Linus Torvalds
parent b633237e9c
commit 5f51e139d8
1 changed files with 6 additions and 6 deletions
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12
arch/x86_64/mm/init.c
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@ -88,8 +88,6 @@ void show_mem(void)
printk(KERN_INFO "%lu pages swap cached\n",cached);
}
/* References to section boundaries */
int after_bootmem;
static __init void *spp_getpage(void)
@ -259,9 +257,10 @@ phys_pmd_init(pmd_t *pmd, unsigned long address, unsigned long end)
for (i = 0; i < PTRS_PER_PMD; pmd++, i++, address += PMD_SIZE) {
unsigned long entry;
if (address > end) {
for (; i < PTRS_PER_PMD; i++, pmd++)
set_pmd(pmd, __pmd(0));
if (address >= end) {
if (!after_bootmem)
for (; i < PTRS_PER_PMD; i++, pmd++)
set_pmd(pmd, __pmd(0));
break;
}
entry = _PAGE_NX|_PAGE_PSE|_KERNPG_TABLE|_PAGE_GLOBAL|address;
@ -339,7 +338,8 @@ static void __init find_early_table_space(unsigned long end)
table_end = table_start;
early_printk("kernel direct mapping tables up to %lx @ %lx-%lx\n",
end, table_start << PAGE_SHIFT, table_end << PAGE_SHIFT);
end, table_start << PAGE_SHIFT,
(table_start << PAGE_SHIFT) + tables);
}
/* Setup the direct mapping of the physical memory at PAGE_OFFSET.