diff options
| author | Naoya Horiguchi <[email protected]> | 2014-06-04 16:05:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2014-06-04 16:53:51 -0700 |
| commit | c177c81e09e517bbf75b67762cdab1b83aba6976 (patch) | |
| tree | 569aed2a30badb1ce3e5393de74b43eeeb22e376 /lib/flex_array.c | |
| parent | 7f39dda9d86fb4f4f17af0de170decf125726f8c (diff) | |
hugetlb: restrict hugepage_migration_support() to x86_64
Currently hugepage migration is available for all archs which support
pmd-level hugepage, but testing is done only for x86_64 and there're
bugs for other archs. So to avoid breaking such archs, this patch
limits the availability strictly to x86_64 until developers of other
archs get interested in enabling this feature.
Simply disabling hugepage migration on non-x86_64 archs is not enough to
fix the reported problem where sys_move_pages() hits the BUG_ON() in
follow_page(FOLL_GET), so let's fix this by checking if hugepage
migration is supported in vma_migratable().
Signed-off-by: Naoya Horiguchi <[email protected]>
Reported-by: Michael Ellerman <[email protected]>
Tested-by: Michael Ellerman <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Russell King <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: David Miller <[email protected]>
Cc: <[email protected]> [3.12+]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/flex_array.c')
0 files changed, 0 insertions, 0 deletions