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authorDave Jiang <dave.jiang@intel.com>2012-04-05 03:10:41 +0400
committerDan Williams <dan.j.williams@intel.com>2012-04-06 02:24:35 +0400
commitf26df1a1a9452573af7b6cea9a4723593e838568 (patch)
tree5f45acfa1010edb9a1a481a9ad40e82322a75837 /net/ipv4
parent21b764e075e74f8af90da9f623aa3e2167484687 (diff)
downloadlinux-f26df1a1a9452573af7b6cea9a4723593e838568.tar.xz
ioatdma: DMA copy alignment needed to address IOAT DMA silicon errata
Silicon errata where when RAID and legacy descriptors are mixed, the legacy (memcpy and friends) operation must have alignment of 64 bytes to avoid hanging. This effects Intel Xeon C55xx, C35xx, E5-2600. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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