amdkfd: find_process_by_mm always return the primary context

Up until this commit, the kfd multiple contexts feature has
not been fully implemented in mainline kernel yet.

For backawrd compatibility, not break existing use cases,
this commit changes function find_process_by_mm, let it
always return the primary kfd_process.

Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index 307cf4ccc2a3bdfb9553ddaa75a7ad5131ef1a8e..1abcabc054a58757750f0833e9ebd812c1af98d0 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -935,7 +935,7 @@ static struct kfd_process *find_process_by_mm(const struct mm_struct *mm)
 
        hash_for_each_possible_rcu(kfd_processes_table, process,
                                        kfd_processes, (uintptr_t)mm)
-               if (process->mm == mm)
+               if (process->mm == mm && process->context_id == KFD_CONTEXT_ID_PRIMARY)
                        return process;
 
        return NULL;