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
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alignment.c
asids-debugfs.c
cache-debugfs.c	sh: prefix sh-specific "CCR" and "CCR2" by "SH_"	2014-03-04 07:55:49 -08:00
cache-sh2.c	sh: prefix sh-specific "CCR" and "CCR2" by "SH_"	2014-03-04 07:55:49 -08:00
cache-sh2a.c	sh: prefix sh-specific "CCR" and "CCR2" by "SH_"	2014-03-04 07:55:49 -08:00
cache-sh3.c
cache-sh4.c	sh: prefix sh-specific "CCR" and "CCR2" by "SH_"	2014-03-04 07:55:49 -08:00
cache-sh5.c
cache-sh7705.c
cache-shx3.c	sh: prefix sh-specific "CCR" and "CCR2" by "SH_"	2014-03-04 07:55:49 -08:00
cache.c	sh: prefix sh-specific "CCR" and "CCR2" by "SH_"	2014-03-04 07:55:49 -08:00
consistent.c
extable_32.c
extable_64.c
fault.c	arch: mm: pass userspace fault flag to generic fault handler	2013-09-12 15:38:01 -07:00
flush-sh4.c
gup.c
hugetlbpage.c	hugetlb: restrict hugepage_migration_support() to x86_64	2014-06-04 16:53:51 -07:00
init.c	mm: use pgdat_end_pfn() to simplify the code in arch	2013-11-13 12:09:03 +09:00
ioremap_fixed.c
ioremap.c
Kconfig
kmap.c
Makefile
mmap.c
nommu.c
numa.c
pgtable.c
pmb.c
sram.c
tlb-debugfs.c
tlb-pteaex.c
tlb-sh3.c
tlb-sh4.c
tlb-sh5.c	sh: delete __cpuinit usage from all sh files	2013-07-14 19:36:53 -04:00
tlb-urb.c
tlbex_32.c
tlbex_64.c
tlbflush_32.c
tlbflush_64.c
uncached.c