forked from luck/tmp_suning_uos_patched
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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alchemy | ||
ar7 | ||
ath79 | ||
bcm47xx | ||
bcm63xx | ||
boot | ||
cavium-octeon | ||
cobalt | ||
configs | ||
dec | ||
emma | ||
fw | ||
include | ||
jazz | ||
jz4740 | ||
kernel | ||
kvm | ||
lantiq | ||
lasat | ||
lib | ||
loongson | ||
loongson1 | ||
math-emu | ||
mm | ||
mti-malta | ||
mti-sead3 | ||
netlogic | ||
oprofile | ||
pci | ||
pmcs-msp71xx | ||
pnx833x | ||
power | ||
ralink | ||
rb532 | ||
sgi-ip22 | ||
sgi-ip27 | ||
sgi-ip32 | ||
sibyte | ||
sni | ||
txx9 | ||
vr41xx | ||
Kbuild | ||
Kbuild.platforms | ||
Kconfig | ||
Kconfig.debug | ||
Makefile |