Jonathan Kim 97ae3c8cce
drm/amdkfd: prepare map process for single process debug devices ...
Older HW only supports debugging on a single process because the
SPI debug mode setting registers are device global.
The HWS has supplied a single pinned VMID (0xf) for MAP_PROCESS
for debug purposes. To pin the VMID, the KFD will remove the VMID from
the HWS dynamic VMID allocation via SET_RESOUCES so that a debugged
process will never migrate away from its pinned VMID.
The KFD is responsible for reserving and releasing this pinned VMID
accordingly whenever the debugger attaches and detaches respectively.
Signed-off-by: Jonathan Kim <jonathan.kim@amd.com >
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com >
Signed-off-by: Alex Deucher <alexander.deucher@amd.com >
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