Date: Thu, 22 Sep 2005 08:37:08 +0200 From: Martin Nilsson <martin@gneto.com> To: Jung-uk Kim <jkim@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: [PATCH] AMD multicore detection Message-ID: <43325114.4090907@gneto.com> In-Reply-To: <200509211550.27524.jkim@FreeBSD.org> References: <200509211550.27524.jkim@FreeBSD.org>
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Jung-uk Kim wrote: > New patch is here: > http://people.freebsd.org/~jkim/multicore.diff > > Please test and let me know. I don't have multicore CPU to test it > for myself. :-( The below is on a Pentium D 820 (Dualcore). I don't like that the two cores are reported as hyperthreading when the CPU does not support hyperthreading (only the 840 EE does). If we ship 6.0 with HT disabled I'm afraid that it will turn off one of the cores, right? Regards, Martin # uname -a FreeBSD t121.gneto.com 6.0-BETA5 FreeBSD 6.0-BETA5 #4: Thu Sep 22 08:15:42 CEST 2005 root@t121.gneto.com:/usr/obj/usr/src/sys/DCORE amd64 Before: FreeBSD 6.0-BETA5 #3: Wed Sep 21 21:32:53 CEST 2005 root@t121.gneto.com:/usr/obj/usr/src/sys/DCORE Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Intel(R) Pentium(R) D CPU 2.80GHz (2805.62-MHz K8-class CPU) Origin = "GenuineIntel" Id = 0xf44 Stepping = 4 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,C MOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Features2=0x641d<SSE3,RSVD2,MON,DS_CPL,CNTX-ID,CX16,<b14>> AMD Features=0x20100800<SYSCALL,NX,LM> Hyperthreading: 2 logical CPUs real memory = 2137407488 (2038 MB) avail memory = 2055442432 (1960 MB) ACPI APIC Table: <INTEL D945GNT > FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 After: Copyright (c) 1992-2005 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 6.0-BETA5 #4: Thu Sep 22 08:15:42 CEST 2005 root@t121.gneto.com:/usr/obj/usr/src/sys/DCORE Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Intel(R) Pentium(R) D CPU 2.80GHz (2805.61-MHz K8-class CPU) Origin = "GenuineIntel" Id = 0xf44 Stepping = 4 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,C MOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Features2=0x641d<SSE3,RSVD2,MON,DS_CPL,CNTX-ID,CX16,<b14>> AMD Features=0x20100800<SYSCALL,NX,LM> Hyperthreading: 2 logical CPUs real memory = 2137407488 (2038 MB) avail memory = 2055438336 (1960 MB) ACPI APIC Table: <INTEL D945GNT > FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1
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