Date: Thu, 31 Mar 2005 07:54:45 -0500 From: John Baldwin <jhb@FreeBSD.org> To: "Greg 'groggy' Lehey" <grog@FreeBSD.org> Cc: FreeBSD-amd64@FreeBSD.org Subject: Re: Problems with AMD64 and 8 GB RAM? Message-ID: <4fb44703937dc361f23148ee7956746c@FreeBSD.org> In-Reply-To: <20050331040811.GL6252@wantadilla.lemis.com> References: <20050330222439.GU84137@wantadilla.lemis.com> <20050330223546.GA4705@troutmask.apl.washington.edu> <20050330224445.GW84137@wantadilla.lemis.com> <200503311032.33718.doconnor@gsoft.com.au> <20050331015429.GH6252@wantadilla.lemis.com> <657eb6604d1e00368d77f047a8b5e074@FreeBSD.org> <20050331040811.GL6252@wantadilla.lemis.com>
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On Mar 30, 2005, at 11:08 PM, Greg 'groggy' Lehey wrote: > On Wednesday, 30 March 2005 at 23:01:03 -0500, John Baldwin wrote: >> >> On Mar 30, 2005, at 8:54 PM, Greg 'groggy' Lehey wrote: >>>> lapic0: LINT1 trigger: edge >>>> lapic0: LINT1 polarity: high >>>> lapic1: Routing NMI -> LINT1 >>>> lapic1: LINT1 trigger: edge >>>> lapic1: LINT1 polarity: high >>>> -ioapic0 <Version 0.3> irqs 0-23 on motherboard >>>> +ioapic0 <Version 0.0> irqs 0-23 on motherboard >>>> cpu0 BSP: >>>> ID: 0x00000000 VER: 0x00040010 LDR: 0x01000000 DFR: >>>> 0x0fffffff >>>> lint0: 0x00010700 lint1: 0x00000400 TPR: 0x00000000 SVR: >>>> 0x000001ff >> >> This shows that in the - case the APIC is broken somehow (0.0 isn't a >> valid I/O APIC version). > > You mean the + case, I suppose. Yes, that's what I suspected. > >> It would seem that the system has mapped RAM over top of the I/O >> APIC perhaps? > > That's what I suspected too, but imp doesn't think so. Actually, if the full version register were zero, it would not have had 24 IRQs (irqs 0-23 part), so I'm not sure what it is doing. 0.3 isn't really a valid APIC version AFAIK either, though I'm more familiar with the versions used in Intel APICs (usually 1.1, 1.2, or 2.0). >> It would be interesting to see the contents of your MADT to see if >> it's trying to use a 64-bit PA for your APIC. > > Any suggestions about how to do so? Boot with 4g or boot an i386 version and get acpidump -t output. -- 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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