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[SPARC64]: Fix loop termination in mark_kpte_bitmap() 

If we were aligned, but didn't have at least 256MB left
to process, we would loop forever.

Thanks to fabbione for the report and testing the fix.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-03-05 22:18:50 -08:00
parent 74ae998772
commit f7c00338cf
1 changed files with 4 additions and 1 deletions
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5
arch/sparc64/mm/init.c
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@ -973,12 +973,15 @@ static void __init mark_kpte_bitmap(unsigned long start, unsigned long end)
while (start < end) { while (start < end) {
long remains; long remains;
remains = end - start;
if (remains < size_256MB)
break;
if (start & mask_256MB) { if (start & mask_256MB) {
start = (start + size_256MB) & ~mask_256MB; start = (start + size_256MB) & ~mask_256MB;
continue; continue;
} }
remains = end - start;
while (remains >= size_256MB) { while (remains >= size_256MB) {
unsigned long index = start >> shift_256MB; unsigned long index = start >> shift_256MB;