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Date: Tue, 7 Jan 2003 22:10:20 -0500
From: Andrew Gallatin <gallatin@cs.duke.edu>
To: John Baldwin <jhb@FreeBSD.org>
Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org
Subject: Re: cvs commit: src/sys/i386/i386 mp_machdep.c
Message-ID: <20030107221020.A60240@grasshopper.cs.duke.edu>
References: <200301080133.h081XI8W028546@repoman.freebsd.org> <XFMail.20030107204433.jhb@FreeBSD.org>
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> CPU: Pentium 4 (686-class CPU)
>   Origin = "GenuineIntel"
>   Features=0xffffffffbfebfbff<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>
>   Hyperthreading: 2 logical CPUs

<...>

> For now I am working on reworking the i386 interrupt code so that
> using the local and I/O APICs versus using the traditional PICs is
> a runtime decision rather than a compile time decision as well as
> fixing the mptable code to route PCI interrupts using the
> pcib_route_interrupt() method and adding support for enumerating
> APICs and CPUs via ACPI.  The goal is to put SMP into GENERIC on
> i386 to support SMP out of the box and obsolete /sys/i386/conf/SMP.

Cool!

Will I ever be able to run a system like the following (with no I/O
APIC) under FreeBSD/SMP?:

CPU: Pentium 4 (2533.43-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0xf24  Stepping = 4
  Features=0x3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM>
<...>
acpi_cpu0: <CPU> on acpi0
acpi_cpu1: <CPU> on acpi0
<...>

thanks,

Drew







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