kernel-fxtec-pro1x/arch/sparc
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
..
boot sparc: Fix piggyback with newer binutils. 2012-12-03 11:24:25 -08:00
configs perf: Remove PERF_COUNTERS config option 2012-04-26 13:52:52 +02:00
crypto sparc64: Set CRYPTO_TFM_REQ_MAY_SLEEP consistently in CAMELLIA code. 2012-12-19 15:44:31 -08:00
include Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-03 12:57:53 -07:00
kernel PCI changes for the v3.16 merge window: 2014-06-02 12:15:19 -07:00
lib sparc64: Add membar to Niagara2 memcpy code. 2014-05-17 11:28:05 -07:00
math-emu sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads. 2012-10-26 15:18:37 -07:00
mm hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-04 16:53:51 -07:00
net net: filter: add jited flag to indicate jit compiled filters 2014-03-31 00:45:08 -04:00
oprofile
power sparc64: Hibernation support 2013-03-20 11:06:54 -07:00
prom sparc: delete non-required instances of include <linux/init.h> 2014-01-28 23:38:23 -08:00
Kbuild sparc64: Add SHA1 driver making use of the 'sha1' instruction. 2012-08-20 15:08:49 -07:00
Kconfig Merge git://git.infradead.org/users/eparis/audit 2014-04-12 12:38:53 -07:00
Kconfig.debug
Makefile sparc64: Hibernation support 2013-03-20 11:06:54 -07:00