NVMe: Mismatched host/device page size support

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Adds support for devices with max page size smaller than the host's.
In the case we encounter such a host/device combination, the driver will
split a page into as many PRP entries as necessary for the device's page
size capabilities. If the device's reported minimum page size is greater
than the host's, the driver will not attempt to enable the device and
return an error instead.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

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Keith Busch 2014-06-23 11:34:01 -06:00 • committed by Jens Axboe

parent a7dd7957ac

commit 1d09062460

2 changed files with 42 additions and 19 deletions

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include/linux/nvme.h

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