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c03ab37cbe
x86_64 defines ARCH_HAS_SG_CHAIN. So if IOMMU implementations don't support sg chaining, we will get data corruption. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>