Re: interrupt&syscall

[aprasad@in.ibm.com]

>
>> You can no preempt a process running in kernel mode.  The kernel
>> is not preemptive, yet.  Note however that you also have boxes
>> with multiple cpu's, and that you require more locking there.

>    Does this mean that when I do a system call and the network
>card send an interrupt, it waits until the syscall returns?

User context(system call processing) is can always be pre-empted by an
bottom half which in turn is also pre-emptable by an interrupt handler.

Regards

Anil Kumar Prasad,
Hardware Design,
IBM Global Services,
Banglore, INDIA
Phone:+91(80)5262355#2927


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