diff options
| author | Oak Zeng <Oak.Zeng@amd.com> | 2019-07-09 09:40:15 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-07-18 14:18:04 -0500 |
| commit | 35cdc81bfa94d10373ecae279f3c48ca858ac4fd (patch) | |
| tree | 6802e5a17e7c87005d559c0056eb755963fa4a77 /drivers/gpu/drm/amd/amdkfd | |
| parent | 3a68a638a96f1468e267681f833928fd66185a6a (diff) | |
drm/amdkfd: Fix sdma_bitmap overflow issue
In the original formula, when sdma queue number is 64,
the left shift overflows. Use an equivalence that won't
overflow.
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index d7794c8dc9cc..fe1ce348fdcd 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -880,8 +880,8 @@ static int initialize_nocpsch(struct device_queue_manager *dqm) } dqm->vmid_bitmap = (1 << dqm->dev->vm_info.vmid_num_kfd) - 1; - dqm->sdma_bitmap = (1ULL << get_num_sdma_queues(dqm)) - 1; - dqm->xgmi_sdma_bitmap = (1ULL << get_num_xgmi_sdma_queues(dqm)) - 1; + dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm)); + dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm)); return 0; } @@ -1019,8 +1019,8 @@ static int initialize_cpsch(struct device_queue_manager *dqm) dqm->sdma_queue_count = 0; dqm->xgmi_sdma_queue_count = 0; dqm->active_runlist = false; - dqm->sdma_bitmap = (1ULL << get_num_sdma_queues(dqm)) - 1; - dqm->xgmi_sdma_bitmap = (1ULL << get_num_xgmi_sdma_queues(dqm)) - 1; + dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm)); + dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm)); INIT_WORK(&dqm->hw_exception_work, kfd_process_hw_exception); |