s390/mm: fix pmd_pfn() for thp
authorGerald Schaefer <gerald.schaefer@de.ibm.com>
Wed, 9 Jan 2013 17:49:51 +0000 (18:49 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Sat, 12 Jan 2013 17:49:25 +0000 (18:49 +0100)
commit171c4006fb1b42a084057a71c86776e9f1b8e62c
tree84ea088530fdda5322b144ccfbf32b9502fcf737
parentb719f43059903820c31edb30f4663a2818836e7f
s390/mm: fix pmd_pfn() for thp

The pfn calculation in pmd_pfn() is broken for thp, because it uses
HPAGE_SHIFT instead of the normal PAGE_SHIFT. This is fixed by removing
the distinction between thp and normal pmds in that function, and always
using PAGE_SHIFT.

Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/include/asm/pgtable.h