Date: Wed, 23 May 2007 23:16:48 +0200 From: Roland Smith <rsmith@xs4all.nl> To: Stefan Lambrev <stefan.lambrev@sun-fish.com> Cc: freebsd-amd64@freebsd.org Subject: Re: CPUTYPE Message-ID: <20070523211648.GE3705@slackbox.xs4all.nl> In-Reply-To: <465454CF.3060601@sun-fish.com> References: <465454CF.3060601@sun-fish.com>
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On Wed, May 23, 2007 at 05:50:55PM +0300, Stefan Lambrev wrote:
> Hi list,
>=20
> From what I read the right CPUTYPE for freebsd/amd64 and
>=20
> CPU: Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz (1995.02-MHz K8-cla=
ss=20
> CPU)
> Origin =3D "GenuineIntel" Id =3D 0x6f6 Stepping =3D 6
> =20
> Features=3D0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,P=
GE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,
> TM,PBE>
> Features2=3D0xe3bd<SSE3,RSVD2,MON,DS_CPL,VMX,EST,TM2,<b9>,CX16,XTPR,<b1=
5>>
> AMD Features=3D0x20100800<SYSCALL,NX,LM>
> AMD Features2=3D0x1<LAHF>
>=20
> I should use CPUTYPE?=3Dnocona , right?
> I just want to be sure :)
Have a look at /usr/src/share/mk/bsd.cpu.mk, especially the bit that
says "Set up the list of CPU features based on the CPU type":
=2E elif ${MACHINE_ARCH} =3D=3D "amd64"
=2E if ${CPUTYPE} =3D=3D "opteron" || ${CPUTYPE} =3D=3D "athlon64" || ${CP=
UTYPE} =3D=3D "k8"
MACHINE_CPU =3D k8 3dnow
=2E elif ${CPUTYPE} =3D=3D "nocona"
MACHINE_CPU =3D sse3
=2E endif
MACHINE_CPU +=3D amd64 sse2 sse mmx
The only extra featuree for "nocona" seems to be the SSE3
instructions. Since your 'Features2' lists SSE3, it is correct.
=20
> Also is nocona right for all Intel x86_64 processors (if I run=20
> freebsd/amd64)
> like xeon, new pentium D, core (2) duo and etc?
See http://en.wikipedia.org/wiki/SSE3
Roland
--=20
R.F.Smith http://www.xs4all.nl/~rsmith/
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