GEN12_MAX_CONTEXT_HW_ID
BUILD_BUG_ON(BITS_PER_LONG > GEN12_MAX_CONTEXT_HW_ID);
BUILD_BUG_ON(BITS_PER_LONG > GEN12_MAX_CONTEXT_HW_ID);
ccid &= GEN12_MAX_CONTEXT_HW_ID;
ctx_id = (GEN12_MAX_CONTEXT_HW_ID - 1) <<