ring on PowerPC

Grant Likely grant.likely at secretlab.ca
Wed Oct 31 16:18:16 EST 2007

On 10/30/07, Bai Shuwei <baishuwei at gmail.com> wrote:
> Hi, everyone
>    As we know, the program on the X86 can run on the differnt ring(0, 1, 2,
> 3) and the linux kernel run in the ring 0 and user program in the ring 3.
> And now I want to know wether there is a simple mechanism on the PowerPC
> architecture? thx all!

Powerpc has 2 privilege levels; user and supervisor.  The kernel runs
in supervisor mode, and user-space runs in user mode.


Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely at secretlab.ca
(403) 399-0195

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