Re: [uml-user] Question regarding possibility of porting of User Mode Linux on Minix

2008-03-10 Thread Pravin
> > ptrace allows child signals to be intercepted and nullified. Signals > from the host are the equivalent of hardware interrupts. The UML > kernel makes its own decisions about signals to its own processes, and > those are delivered in the same way as any other architecture. > > > > Is the

Re: [uml-user] Question regarding possibility of porting of User Mode Linux on Minix

2008-03-10 Thread Jeff Dike
On Mon, Mar 10, 2008 at 07:30:04PM +0530, Pravin wrote: > > > > You also need to be able to intercept and nullify signals. > > I am not very clear about this, But how does UML deals with interrupts > or how they r simulated ? ptrace allows child signals to be intercepted and nullified. Signals

Re: [uml-user] Question regarding possibility of porting of User Mode Linux on Minix

2008-03-10 Thread Pravin
> > The first thing to do is make sure you have a way of virtualizing > Linux (int 0x80/sysenter/syscall) system calls, which means that you > can prevent them from executing on the host, you can read the system > call and the arguments, and make it return with the result of your > choice, inc

Re: [uml-user] Question regarding possibility of porting of User Mode Linux on Minix

2008-03-07 Thread Jeff Dike
On Mon, Mar 03, 2008 at 04:50:16PM +0530, Pravin wrote: > I do consider that UML is act of porting Linux on Linux itself. This > allows linux kernel (guest) to run as user-process on linux kernel > (host). Correct. > I am studying the possibility of porting Linux on Minix on similar > lines. This