diff options
| author | Omer Shpigelman <oshpigelman@habana.ai> | 2019-05-01 14:38:38 +0300 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2019-05-24 22:46:15 +0300 |
| commit | 89225ce4fc43da2db968923fc94e1469dbcdbd5a (patch) | |
| tree | 2e07242d5a6ada3012f753403ce5505807f75a8f /drivers/misc/habanalabs/goya/goya.c | |
| parent | a188339ca5a396acc588e5851ed7e19f66b0ebd9 (diff) | |
| download | lwn-89225ce4fc43da2db968923fc94e1469dbcdbd5a.tar.gz lwn-89225ce4fc43da2db968923fc94e1469dbcdbd5a.zip | |
habanalabs: halt debug engines on user process close
This patch fix a potential bug where a user's process has closed
unexpectedly without disabling the debug engines. In that case, the debug
engines might continue running but because the user's MMU mappings are
going away, we will get page fault errors.
This behavior is also opposed to the general rule where nothing runs on
the device after the user process closes.
The patch stops the debug H/W engines upon process termination and thus
makes sure nothing runs on the device after the process goes away.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/misc/habanalabs/goya/goya.c')
| -rw-r--r-- | drivers/misc/habanalabs/goya/goya.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index a582e29c1ee4..02d116b01a1a 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -4819,7 +4819,8 @@ static const struct hl_asic_funcs goya_funcs = { .set_dram_bar_base = goya_set_ddr_bar_base, .init_iatu = goya_init_iatu, .rreg = hl_rreg, - .wreg = hl_wreg + .wreg = hl_wreg, + .halt_coresight = goya_halt_coresight }; /* |