CTX_CTRL_INHIBIT_SYN_CTX_SWITCH
ctl = REG_MASKED_FIELD_ENABLE(CTX_CTRL_INHIBIT_SYN_CTX_SWITCH);
regs[CTX_CONTEXT_CONTROL] = REG_MASKED_FIELD_ENABLE(CTX_CTRL_INHIBIT_SYN_CTX_SWITCH |