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c177c81e09
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> |
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.. | ||
alignment.c | ||
asids-debugfs.c | ||
cache-debugfs.c | ||
cache-sh2.c | ||
cache-sh2a.c | ||
cache-sh3.c | ||
cache-sh4.c | ||
cache-sh5.c | ||
cache-sh7705.c | ||
cache-shx3.c | ||
cache.c | ||
consistent.c | ||
extable_32.c | ||
extable_64.c | ||
fault.c | ||
flush-sh4.c | ||
gup.c | ||
hugetlbpage.c | ||
init.c | ||
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 | ||
tlb-urb.c | ||
tlbex_32.c | ||
tlbex_64.c | ||
tlbflush_32.c | ||
tlbflush_64.c | ||
uncached.c |