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Date:      Wed, 30 Mar 2005 23:01:03 -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:  <657eb6604d1e00368d77f047a8b5e074@FreeBSD.org>
In-Reply-To: <20050331015429.GH6252@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>

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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).  It would seem that the system has mapped RAM 
over top of the I/O APIC perhaps?  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.  The local APIC portion seems ok though.

-- 

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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