Date: Tue, 24 Sep 2002 10:45:02 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Robert Bopko <zero@estimese.net> Cc: smp@freebsd.org, beemern <beemern@ksu.edu>, Terry Lambert <tlambert2@mindspring.com> Subject: Re: PATCH: start_ap(), and P4 SMP hack to try Message-ID: <XFMail.20020924104502.jhb@FreeBSD.org> In-Reply-To: <20020924104716.GA24307@finom.estimese.net>
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On 24-Sep-2002 Robert Bopko wrote: > hello, > > this is dmesg from linux 2.4.18 with SE7500CW2 & 2 xeon processors. > hyperthreading is turned off. > wondering how can i dump info about multiprocessing in windoze 2000? > > thanks. I managed to look at messages from another machine running Linux and it is using APIC ID 6, so the BIOS is ok. It may be that it doesn't like the sequence of IPI's that we send. Although, we use the exact method recommended by the MP spec. Look in start_ap() and try disabling the second startup IPI (just use #if 0) to see if it works better. > On Mon, Sep 23, 2002 at 02:56:19PM -0400, John Baldwin wrote: >> *sigh*, except that we may need to change to using logical APIC >> ID's instead of physical ones at some time. Anyways, I'm not >> sure the BIOS is hosed. The mptable and ACPI MADT table supposedly >> have their local APIC entries added by the actual AP's during the >> BIOS startup anyways. Can someone with one of these Intel machines >> please see what APIC ID the second processor has on Linux and >> Windows? Thanks. >> >> -- >> >> John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ >> "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ >> >> To Unsubscribe: send mail to majordomo@FreeBSD.org >> with "unsubscribe freebsd-smp" in the body of the message -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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