greetings !! i am using the the scheduler to implement some virtualisation stuff. i would really appreciate some help regarding the following stuff i need to get done. from the scheduler i need to do an upcall to a user level task . Can i use an ipc for this ? from the user task ( the receiver of the above upcall from kernel ) , i need to ( directly if possible ) switch to another task . how do i do this ? thanks !! any pointers would be really appreciated. ej