[PATCH] Utilize i686, SSE and MMX by default on FreeBSD/i386

[Xin LI]

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On 2010/03/19 04:51, John Baldwin wrote:
> On Thursday 18 March 2010 9:06:31 pm Xin LI wrote:
>> Hi,
>>
>> I think it doesn't really make sense to by default use MACHINE_CPU=i486
>> when the kernel is built with SSE by default today.
>>
>> Attached patch uses i686 SSE MMX by default, the user can always change
>> the default setting by overriding CPUTYPE (they have to do it as SSE is
>> enabled by default for several years).
> 
> The kernel is only built with support for userland applications using SSE, it 
> does not _use_ SSE.  Similarly, the kernel is built with support for PG_NX 
> provided on 64-bit processors, but it does not do so by failing to support 
> older 32-bit processors.  I think this change is premature.  Users can already 
> set CPUTYPE in make.conf.  Also, most modern x86 server-class machines are
> 64-bit in which case they would be running FreeBSD/amd64 and using SSE
> already.

Yes you are right.  Sorry for the confusion.

Cheers,
- -- 
Xin LI <delphij at delphij.net>	http://www.delphij.net/
FreeBSD - The Power to Serve!	       Live free or die
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