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Date:      Fri,  8 Dec 2000 14:55:06 -0500 (EST)
From:      Andrew Gallatin <gallatin@cs.duke.edu>
To:        John Baldwin <jhb@FreeBSD.ORG>
Cc:        (Bill Paul) <wpaul@FreeBSD.ORG>, (Wilko Bulte) <wkb@freebie.demon.nl>, alpha@FreeBSD.ORG
Subject:   Re: cvs commit: src/sys/alpha/conf GENERIC
Message-ID:  <14897.14829.188531.763935@grasshopper.cs.duke.edu>
In-Reply-To: <XFMail.001208110004.jhb@FreeBSD.org>
References:  <20001208174515.1CD8637B400@hub.freebsd.org> <XFMail.001208110004.jhb@FreeBSD.org>

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John Baldwin writes:
 > >> 
 > >>     trap entry = 0x2 (memory management fault)
 > >>     a0         = 0x464000
 > >>     a1         = 0x1
 > >>     a2         = 0x0
 > >>     pc         = 0xfffffc000046b008
 > >>     ra         = 0xfffffc0000469dac
 > >>     curproc    = 0xfffffe00042f5e40
 > >>         pid = 206, comm = ifconfig
 > >> 

This is probably the result of touching a virtual address for a pci
memory region without calling bus_alloc_resource with either the
PCI_RF_DENSE or PCI_RF_BWX flags.

Eg, with out these flags, rman_get_virtual will end up returning a
non-virtual address on alpha.

Drew



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