diff options
| author | Oded Gabbay | 2019-02-28 10:46:21 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2019-02-28 13:07:52 +0100 |
| commit | af5f7eea45e1b177db961c4706625f4cf545c063 (patch) | |
| tree | a59b3f71bb2aa0dbd1f7e39129f5e30b75a11a4e /security | |
| parent | efaa281219fd37cb1ee5cdef483aa67a16b0a087 (diff) | |
habanalabs: soft-reset device if context-switch fails
This patch fix a bug in the driver, where if the TPC or MME remains in
non-IDLE even after all the command submissions are done (due to user bug
or malicious user), then future command submissions will fail in the
context-switch stage and the driver will remain in "stuck" mode.
The fix is to do a soft-reset of the device in case the context-switch
fails, because the device should be IDLE during context-switch. If it is
not IDLE, then something is wrong and we should reset the compute engines.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions