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Date:      Wed, 16 Jan 2008 14:14:07 +0000
From:      Pete French <petefrench@ticketswitch.com>
To:        FreeBSD-gnats-submit@FreeBSD.org
Subject:   kern/119716: vm_fault when trying to boot 7.0 ACPI on HP dc5750
Message-ID:  <E1JF91r-0000cX-MG@dilbert.ticketswitch.com>
Resent-Message-ID: <200801161420.m0GEK1F5067062@freefall.freebsd.org>

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>Number:         119716
>Category:       kern
>Synopsis:       vm_fault when trying to boot 7.0 ACPI on HP dc5750
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jan 16 14:20:00 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Pete French
>Release:        FreeBSD 7.0-RC1 i386
>Organization:
TicketSwitch Ltd
>Environment:
System: FreeBSD dilbert.rattatosk 7.0-RC1 FreeBSD 7.0-RC1 #0: Wed Jan 16 13:11:44 GMT 2008 petefrench@dilbert.rattatosk:/usr/obj/usr/src/sys/DILBERT i386

	Machine is HP dc5750. Latest BIOS (v02.31), AMD 4200+ processor,
	2 gigs of RAM.

>Description:

	trying to boot the system with ACPI enabled produces the following:

	panic: vm_fault: fault on nofualt entry, addr: 81423000

	the system boots fine wiuthout ACPI, but then will only use one of
	the cores and requires the physical RAM to be set in loader.conf.

	I think this may be the same issue as PR 117918 which I reported
	under 6.3.
	

>How-To-Repeat:

	try and boot the machine using 7.0/i386 with ACPI and the panic
	occurs almost instantly the machine tries to boot.

>Fix:

	workaround is not to use ACPI, but this means only using a single
	core of the processor.
>Release-Note:
>Audit-Trail:
>Unformatted:



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