* \param sp Initial value of stack pointer
* \param pager Pager of the thread
* \param task Task to put thread in
* \param sp Initial value of stack pointer
* \param pager Pager of the thread
* \param task Task to put thread in
* \param sp Scheduler params to use
* \return 0 on success, <0 on error
*/
* \param sp Scheduler params to use
* \return 0 on success, <0 on error
*/