Original-Nachricht
Datum: Sat, 23 Feb 2008 09:32:01 +1100
Von: Benjamin Herrenschmidt [EMAIL PROTECTED]
An: Gerhard Pircher [EMAIL PROTECTED]
CC: Milton Miller [EMAIL PROTECTED], linuxppc-dev@ozlabs.org
Betreff: Re: How to dynamically disable/enable CPU features
At Fri Feb 22 07:07:58 EST 2008, Gerhard Pircher wrote:
I'm wondering how to disable or enable CPU features based on the board
the
kernel is running on. In my case I want to disable the
CPU_FTR_NEED_COHERENT flag for 74xx CPUs, because it locks up the
machine.
I tried to clear the flag in
Hi,
Original-Nachricht
Datum: Fri, 22 Feb 2008 11:24:38 -0600
Von: Milton Miller [EMAIL PROTECTED]
An: Gerhard Pircher [EMAIL PROTECTED]
CC: ppcdev linuxppc-dev@ozlabs.org
Betreff: Re: How to dynamically disable/enable CPU features?
We handle cpu features in a couple
On Thu, 2008-02-21 at 21:07 +0100, Gerhard Pircher wrote:
Hi,
I'm wondering how to disable or enable CPU features based on the board the
kernel is running on. In my case I want to disable the
CPU_FTR_NEED_COHERENT flag for 74xx CPUs, because it locks up the machine.
I tried to clear the
The flag is in POSSIBLE. I now use this code in the platform probe
function to nop out the code affected by the flag:
cur_cpu_spec-cpu_features = ~CPU_FTR_NEED_COHERENT;
/* Patch out unwanted feature. */
do_feature_fixups(cur_cpu_spec-cpu_features,
Hi,
I'm wondering how to disable or enable CPU features based on the board the
kernel is running on. In my case I want to disable the
CPU_FTR_NEED_COHERENT flag for 74xx CPUs, because it locks up the machine.
I tried to clear the flag in the platform's *_probe() function with the
following code:
