MES process context is a process-level page
where process specific context is saved for
MES scheduler.
However, current user-queue code path assigns
fw_obj of a queue to MES process_context_addr
when adding the queue to MES.
This means every new queue from the same process
would replace the previous process context address
with that queue's fw_obj address.
What's worse is, when user space frees a queue,
its fw_obj will be freed as well, causing MES
working on a NULL page pointer.
This issue leads to inconsistency and crash
in the scheduler.
This commit allocates a process-level page for
MES process contexts for a process other than queue-level
Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
97bcaf15ad