linux/arch/tile/mm
Naoya Horiguchi c177c81e09 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 <n-horiguchi@ah.jp.nec.com>
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Miller <davem@davemloft.net>
Cc: <stable@vger.kernel.org>	[3.12+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-04 16:53:51 -07:00
..
elf.c tile: implement gettimeofday() via vDSO 2013-08-13 16:26:21 -04:00
extable.c
fault.c tile: remove HUGE_VMAP dead code 2013-09-13 11:15:24 -04:00
highmem.c tile: remove calls to arch_flush_lazy_mmu_mode() 2013-08-13 16:25:56 -04:00
homecache.c tile: remove support for TILE64 2013-09-03 14:53:29 -04:00
hugetlbpage.c hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-04 16:53:51 -07:00
init.c tile: remove HUGE_VMAP dead code 2013-09-13 11:15:24 -04:00
Makefile
migrate_32.S tile: provide traceability for hypervisor calls 2013-08-13 16:26:31 -04:00
migrate_64.S tile: provide traceability for hypervisor calls 2013-08-13 16:26:31 -04:00
migrate.h
mmap.c tile: support ASLR fully 2013-08-30 11:56:25 -04:00
pgtable.c tile: handle pgtable_page_ctor() fail 2013-11-15 09:32:19 +09:00