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authorChristoph Hellwig <hch@lst.de>2018-01-17 22:04:38 +0100
committerJens Axboe <axboe@kernel.dk>2018-01-17 14:05:35 -0700
commitb0f2853b56a2acaff19cca2c6a608f8ec268d21a (patch)
treeb37a803e6a8ca66d6cc831f2d1992b3f7ef33732 /ipc
parent20469a37aed12a886d0deda5a07c04037923144a (diff)
nvme-pci: take sglist coalescing in dma_map_sg into account
Some iommu implementations can merge physically and/or virtually contiguous segments inside sg_map_dma. The NVMe SGL support does not take this into account and will warn because of falling off a loop. Pass the number of mapped segments to nvme_pci_setup_sgls so that the SGL setup can take the number of mapped segments into account. Reported-by: Fangjian (Turing) <f.fangjian@huawei.com> Fixes: a7a7cbe3 ("nvme-pci: add SGL support") Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Sagi Grimberg <sagi@rimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'ipc')
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