kernel configuration

[Chuck Swiger]

On Jan 14, 2009, at 10:15 AM, Ewald Jenisch wrote:
> On Wed, Jan 14, 2009 at 04:37:53PM +0100, icemaca wrote:
>>
>> this i386 version has
>>
>> cpu             I486_CPU
>> cpu             I586_CPU
>> cpu             I686_CPU
>>
>
> Basically you can comment all but I686_CPU since the others are for
> earlier x86 architectures.

While it is true that you can comment out all but i686 and get a  
working kernel, you will experience reduced performance.  There are a  
number of low-level assembly routines (cf sys/i386/i386/support.s such  
as i586_bcopy) that are conditionalized off of I586_CPU only, even  
though they provide an advantage on i686 platforms also.

-- 
-Chuck