UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Oak Zeng 2019-07-09 09:40:15 -05:00 committed by Alex Deucher
parent 3a68a638a9
commit 35cdc81bfa
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
View File

@ -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);