Re: ring on PowerPC
On Tue, 2007-10-30 at 23:18 -0600, Grant Likely wrote: > On 10/30/07, Bai Shuwei <[EMAIL PROTECTED]> 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. To be complete here, some implementations have 3 :-) Don't forget hypervisor mode ! Ben. ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
Re: ring on PowerPC
On 10/30/07, Bai Shuwei <[EMAIL PROTECTED]> 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. g. -- Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd. [EMAIL PROTECTED] (403) 399-0195 ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
ring on PowerPC
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! best regards! Buroc -- Add: Tianshui South Road 222, Lanzhou, P.R.China Tel: +86-931-8912025 Zip Code: 73 URL: oss.lzu.edu.cn Email: [EMAIL PROTECTED], [EMAIL PROTECTED] ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
