kernel_optimize_test/arch/mips
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
..
alchemy
ar7
ath79
bcm47xx
bcm63xx
boot
cavium-octeon
cobalt
configs USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
dec
emma
fw
include DeviceTree for 3.16: 2014-06-04 10:02:38 -07:00
jazz
jz4740
kernel DeviceTree for 3.16: 2014-06-04 10:02:38 -07:00
kvm MIPS: KVM: Remove redundant semicolon 2014-05-30 13:05:59 +02:00
lantiq DeviceTree for 3.16: 2014-06-04 10:02:38 -07:00
lasat
lib
loongson Merge back earlier cpufreq material. 2014-06-03 15:03:27 +02:00
loongson1
math-emu
mm hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-04 16:53:51 -07:00
mti-malta At over 200 commits, covering almost all supported architectures, this 2014-06-04 08:47:12 -07:00
mti-sead3
netlogic
oprofile
pci
pmcs-msp71xx
pnx833x
power
ralink DeviceTree for 3.16: 2014-06-04 10:02:38 -07:00
rb532
sgi-ip22
sgi-ip27
sgi-ip32
sibyte
sni
txx9
vr41xx
Kbuild
Kbuild.platforms
Kconfig MIPS: KVM: Override guest kernel timer frequency directly 2014-05-30 13:02:23 +02:00
Kconfig.debug
Makefile MIPS: SB1: Fix excessive kernel warnings. 2014-05-28 08:42:23 +02:00