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[POWERPC] Fix bug with early ioremap and 64k pages

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The code for bolting hash entries for ioremap done before proper
mm initialization has a grown a bug when using 64K pages on a
machine where non-cacheable mappings are demoted to 4K HW pages.
The wrong page size index is being passed to the hash table mapping
functions causing a crash at boot on some pSeries machines using
bare metal linux.  This fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2007-02-15 18:29:32 +11:00 committed by Paul Mackerras
parent 41806ef4bf
commit a32525449b
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/mm/pgtable_64.c
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@ -103,7 +103,7 @@ static int map_io_page(unsigned long ea, unsigned long pa, int flags)
*
*/
if (htab_bolt_mapping(ea, ea + PAGE_SIZE, pa, flags,
mmu_virtual_psize)) {
mmu_io_psize)) {
printk(KERN_ERR "Failed to do bolted mapping IO "
"memory at %016lx !\n", pa);
return -ENOMEM;