Subject: kern/21906: pci_dma64_available() isn't quite right
To: None <>
From: None <>
List: netbsd-bugs
Date: 06/16/2003 13:24:02
>Number:         21906
>Category:       kern
>Synopsis:       pci_dma64_available() isn't quite right
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jun 16 20:25:00 UTC 2003
>Originator:     Jason R Thorpe
>Release:        NetBSD 1.6P
Wasabi Systems, Inc.
	The pci_dma64_available() function is close, but not quite
	right.  In particular, it will fail if a system has < 4G of
	RAM, but some of that RAM is physically mapped above the 4G
	address boundary.

	I know of at least one system where this could be the case
	(the system is not available publicly at this time, sorry).