Date: Wed, 16 Jul 2003 15:00:12 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: "Cagle, John (ISS-Houston)" <john.cagle@hp.com> Cc: Patrik Veselik <veselik@ssakhk.cz> Subject: RE: maximum of CPUs Message-ID: <XFMail.20030716150012.jhb@FreeBSD.org> In-Reply-To: <C50AB9511EE59B49B2A503CB7AE1ABD10476C7CB@cceexc19.americas.cpqcorp.net>
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On 16-Jul-2003 Cagle, John (ISS-Houston) wrote: >> -----Original Message----- >> From: John Baldwin [mailto:jhb@FreeBSD.org] >> On 15-Jul-2003 Cagle, John (ISS-Houston) wrote: > <SNIP> >> > -- >> > I/O APICs: APIC ID Version State Address >> > 8 0x11 usable 0xfec00000 >> > 9 0x11 usable 0xfec01000 >> > 10 0x11 usable 0xfec02000 >> > >> > Is this what you would expect to see on an 8-way server >> that supports >> > hyperthreading? >> >> Ugh, I would hope that the APIC ID's wouldn't collide with CPUs. :( >> Note that you have real CPU's at ID's 8 and 10 and a logical one at >> 9. Currently my code doesn't renumber APIC ID's to try to cope with >> this type of case. Does the ACPI MADT table report the same values >> for the APIC ID's of the I/O APICs? > > I should have updated my BIOS before trying this out. Sure enough, this > was a BIOS bug that was corrected in March. The I/O APICS are now > numbered 16, 17 & 18 so as to not collide with processor's local APICS. > (Looks like the original BIOS only accounted for processors 0..7, > without hyperthreading.) Ok, good. > However, even with the properly renumbered IOAPICs, I still get the same > panic: "No free physical APIC IDs found". This is still expected with the current code. > I'm going to add some debug messages and track this down further. I'll > let you know if I find anything. I'll also check the MADT to see if it > jives with everything else. Tor's suggestion to bump up NAPICID to 256 might help. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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