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| author | Nicholas Bellinger <[email protected]> | 2015-09-03 06:30:45 +0000 |
|---|---|---|
| committer | Nicholas Bellinger <[email protected]> | 2015-09-11 07:32:26 +0000 |
| commit | 4416f89b8cfcb794d040fc3b68e5fb159b7d8d02 (patch) | |
| tree | 5593bd9e42765628da157c149fae8e7c8ae77dfd /drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | |
| parent | target/qla2xxx: Honor max_data_sg_nents I/O transfer limit (diff) | |
| download | kernel-4416f89b8cfcb794d040fc3b68e5fb159b7d8d02.tar.gz kernel-4416f89b8cfcb794d040fc3b68e5fb159b7d8d02.zip | |
target: Attach EXTENDED_COPY local I/O descriptors to xcopy_pt_sess
This patch is a >= v4.1 regression bug-fix where control CDB
emulation logic in commit 38b57f82 now expects a se_cmd->se_sess
pointer to exist when determining T10-PI support is to be exposed
for initiator host ports.
To address this bug, go ahead and add locally generated se_cmd
descriptors for copy-offload block-copy to it's own stand-alone
se_session nexus, while the parent EXTENDED_COPY se_cmd descriptor
remains associated with it's originating se_cmd->se_sess nexus.
Note a valid se_cmd->se_sess is also required for future support
of WRITE_INSERT and READ_STRIP software emulation when submitting
backend I/O to se_device that exposes T10-PI suport.
Reported-by: Alex Gorbachev <[email protected]>
Tested-by: Alex Gorbachev <[email protected]>
Cc: "Martin K. Petersen" <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Doug Gilbert <[email protected]>
Cc: <[email protected]> # v4.1+
Signed-off-by: Nicholas Bellinger <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c')
0 files changed, 0 insertions, 0 deletions