From owner-freebsd-stable@FreeBSD.ORG  Tue Nov 22 16:48:33 2005
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Date: Tue, 22 Nov 2005 11:48:32 -0500
From: Pierre-Luc Drouin <pldrouin@pldrouin.net>
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Subject: atapci0: failed to enable memory mapping!
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I get this when I boot -stable on my Dell M70 laptop:
Nov 22 09:25:12 mdaemon kernel: atapci0: <Intel ICH6 SATA150 controller> 
port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xbfa0-0xbfaf irq 9 at device 
31.2 on pci0
Nov 22 09:25:12 mdaemon kernel: atapci0: failed to enable memory mapping!

Should memory mapping be working for that supported Intel SATA controller?
Would memory mapping increase I/O performances significantly?
Sorry if it is a dumb question

Pierre-Luc Drouin