• Felix Kuehling's avatar
    drm/amdkfd: Disable SVM per GPU, not per process · 5a75ea56
    Felix Kuehling authored
    When some GPUs don't support SVM, don't disabe it for the entire process.
    That would be inconsistent with the information the process got from the
    topology, which indicates SVM support per GPU.
    Instead disable SVM support only for the unsupported GPUs. This is done
    by checking any per-device attributes against the bitmap of supported
    GPUs. Also use the supported GPU bitmap to initialize access bitmaps for
    new SVM address ranges.
    Don't handle recoverable page faults from unsupported GPUs. (I don't
    think there will be unsupported GPUs that can generate recoverable page
    faults. But better safe than sorry.)
    Signed-off-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
    Reviewed-by: default avatarPhilip Yang <philip.yang@amd.com>
    Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>