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| author | Klaus Jensen | 2020-11-23 11:24:55 +0100 |
|---|---|---|
| committer | Klaus Jensen | 2021-03-18 12:34:51 +0100 |
| commit | bc3a65e99254cfe001bd16a569a5aa7d20f930e8 (patch) | |
| tree | 7a8af71f3ea29be60d657c2e1209bedf248298bf /include | |
| parent | hw/block/nvme: fix zone management receive reporting too many zones (diff) | |
| download | qemu-bc3a65e99254cfe001bd16a569a5aa7d20f930e8.tar.gz qemu-bc3a65e99254cfe001bd16a569a5aa7d20f930e8.tar.xz qemu-bc3a65e99254cfe001bd16a569a5aa7d20f930e8.zip | |
hw/block/nvme: add metadata support
Add support for metadata in the form of extended logical blocks as well
as a separate buffer of data. The new `ms` nvme-ns device parameter
specifies the size of metadata per logical block in bytes. The `mset`
nvme-ns device parameter controls whether metadata is transfered as part
of an extended lba (set to '1') or in a separate buffer (set to '0',
the default).
Regardsless of the scheme chosen with `mset`, metadata is stored at the
end of the namespace backing block device. This requires the user
provided PRP/SGLs to be walked and "split" into data and metadata
scatter/gather lists if the extended logical block scheme is used, but
has the advantage of not breaking the deallocated blocks support.
Co-authored-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions