Heiko noticed that the current check for hugepage support on s390 is a little bit to
harsh as systems which do not support will crash.
The reason is that pageblock_order can now get negative when we set HPAGE_SHIFT to 0.
To avoid all this and to avoid opening another can of worms with enabling
HUGETLB_PAGE_SIZE_VARIABLE I think it would be best to simply allow architectures to
define their own hugepages_supported().
Thanks
Dominik
Dominik Dingel (4):
Revert "s390/mm: change HPAGE_SHIFT type to int"
Revert "s390/mm: make hugepages_supported a boot time decision"
mm: hugetlb: allow hugepages_supported to be architecture specific
s390/hugetlb: add hugepages_supported define
arch/s390/include/asm/hugetlb.h | 1 +
arch/s390/include/asm/page.h | 8 ++++----
arch/s390/kernel/setup.c | 2 --
arch/s390/mm/pgtable.c | 2 --
include/linux/hugetlb.h | 17 ++++++++---------
5 files changed, 13 insertions(+), 17 deletions(-)
--
2.3.8
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