CTX_TIMESTAMP
CTX_TIMESTAMP * sizeof(u32);
return READ_ONCE(ce->lrc_reg_state[CTX_TIMESTAMP]);
regs[CTX_TIMESTAMP] = ce->stats.runtime.last;
CTX_TIMESTAMP - 1,
arg->ce[0]->lrc_reg_state[CTX_TIMESTAMP] = arg->poison;
arg->ce[1]->lrc_reg_state[CTX_TIMESTAMP] = 0xdeadbeef;
timestamp = READ_ONCE(arg->ce[0]->lrc_reg_state[CTX_TIMESTAMP]);