From: "Grant Likely" <grant.likely@secretlab.ca>
To: "Bai Shuwei" <baishuwei@gmail.com>
Cc: linuxppc-dev@ozlabs.org, linuxppc-embedded@ozlabs.org
Subject: Re: ring on PowerPC
Date: Tue, 30 Oct 2007 23:18:16 -0600 [thread overview]
Message-ID: <fa686aa40710302218s3dfe4d42red589fc5692e4c1@mail.gmail.com> (raw)
In-Reply-To: <f3566d60710302205g2dd867bbk8a3494ceeda569f0@mail.gmail.com>
On 10/30/07, Bai Shuwei <baishuwei@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.
g.
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely@secretlab.ca
(403) 399-0195
next prev parent reply other threads:[~2007-10-31 5:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-31 5:05 ring on PowerPC Bai Shuwei
2007-10-31 5:18 ` Grant Likely [this message]
2007-10-31 5:36 ` Benjamin Herrenschmidt
[not found] <393807697.25590@lzu.edu.cn>
[not found] ` <200710311412.36584.wangbj@lzu.edu.cn>
2007-10-31 6:12 ` Wang, Baojun
2007-10-31 7:09 ` Bai Shuwei
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