Hi,
With several mentions of FreeBSD on/with Pentium 4s, I wanted to
bring up one thing that I noticed. At this point, the i686 MTRR
code in RELENG_4 doesn't recognize Pentium 4 or XEON processors.
As far as I can tell from the documentation, they should be. The
attached patch enables i686
> > > Basically, there are 3 possible issues for Pentium4:
> > >
> > > - higher clock frequency (also for newer P3) may cause overflow
> > > in counters of delay loops - hopefully this does not happen in
> > > FreeBSD
> >
> > We calibrate our delay loops. 8)
>
> If not enough bits are allowed to
One big difference of the P4 is the SSE2 instructions and
registers. It's now reasonable to ignore the old floating point
stack altogether, and do floating point work with the SSE
register file, getting the SIMD speed up where that's useful.
(Because sse can now do doubles as well as floats.)
Ho
Marco van de Voort wrote:
>
> > On Fri, Dec 22, 2000 at 03:33:15PM -0800, Luigi Rizzo wrote:
> > very happily run on Pentium 4 CPU's.
> >
> > Or am I raving again? :) Feel free to correct any gross errors I've made :)
>
> Afaik yes :-)
>
> I
Mike Smith wrote:
>
> > Mike Smith wrote:
> > >
> > > > Is there now support for the Pentium 4 in FreeBSD??
> > >
> > > We've always run on the P4.
> > >
> > > > If so, is there an option such as CPUCLASS 786 in the
ass*,
> FreeBSD will refuse to boot. However, you do not have to have support
> for each and every CPU model from this class - a I686_CPU kernel will
> very happily run on Pentium 4 CPU's.
>
> Or am I raving again? :) Feel free to correct any gross errors I've made :)
Afaik
have to have support
for each and every CPU model from this class - a I686_CPU kernel will
very happily run on Pentium 4 CPU's.
Or am I raving again? :) Feel free to correct any gross errors I've made :)
G'luck,
Peter
--
I had to translate this sentence into English because I
> The Linux issue was actually more stupid than that; Linux won't run on a
> CPU it doesn't recognise. FreeBSD will only refuse to run on a CPU it
> recognises as incapable (since that is a much smaller set).
actually, back in 1.1.5 times, i had a kernel which did not have
cpu I586_CPU in the
> Mike Smith wrote:
> >
> > > Is there now support for the Pentium 4 in FreeBSD??
> >
> > We've always run on the P4.
> >
> > > If so, is there an option such as CPUCLASS 786 in the Kernel??
> >
> > No, it's still a 686.
>
Mike Smith wrote:
>
> > Is there now support for the Pentium 4 in FreeBSD??
>
> We've always run on the P4.
>
> > If so, is there an option such as CPUCLASS 786 in the Kernel??
>
> No, it's still a 686.
Basically, there are 3 possible issues for Penti
> Is there now support for the Pentium 4 in FreeBSD??
We've always run on the P4.
> If so, is there an option such as CPUCLASS 786 in the Kernel??
No, it's still a 686.
--
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponent
On 21-Dec-00 Jamie Heckford wrote:
> Hi,
>
> Is there now support for the Pentium 4 in FreeBSD??
Yes.
> If so, is there an option such as CPUCLASS 786 in the Kernel??
No. The p5-4 is just a 686 AFAIK:
{ "Pentium 4", CPUCLASS_686 }, /* CPU_P4
Hi,
Is there now support for the Pentium 4 in FreeBSD??
If so, is there an option such as CPUCLASS 786 in the Kernel??
--
Jamie Heckford
Chief Network Engineer
Psi-Domain - Innovative Linux Solutions. Ask Us How.
=
email: [EMAIL PROTECTED]
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