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Date: Sun, 30 Apr 2006 03:00:35 GMT
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To: freebsd-bugs@FreeBSD.org
From: John Baldwin <jhb@freebsd.org>
Cc: 
Subject: Re: kern/91408 : [irq] ata(4) failure: SETFEATURES SET TRANSFER
	MODE semaphore timeout !! DANGER Will Robinson !!
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The following reply was made to PR kern/91408; it has been noted by GNATS.

From: John Baldwin <jhb@freebsd.org>
To: Eugene Grosbein <eugen@grosbein.pp.ru>
Cc: bug-followup@freebsd.org, lightsquid@logvinov.com
Subject: Re: kern/91408 : [irq] ata(4) failure: SETFEATURES SET TRANSFER MODE semaphore timeout !! DANGER Will Robinson !!
Date: Sat, 29 Apr 2006 22:54:09 -0400

 On Saturday 29 April 2006 11:41 am, Eugene Grosbein wrote:
 > Hi!
 >
 > With 6.1-RC of today I have the same sympthoms as with 5.4-RELEASE
 > (http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/80815):
 >
 > 1) machine suffers from ATA timeouts if ACPI is fully enabled;
 > 2) debug.acpi.disable=3D"pci_link" in /boot/loader.conf eliminates the
 > problem.
 >
 > So, Soren seems to be right: this is interrupt routing problem
 > and not ATA problem.
 >
 > The question is: should I consider the workaround mentioned above as
 > solution? What will I miss if I keep debug.acpi.disable=3D"pci_link" fore=
 ver?
 
 I think it's dangerous and that you should just disable ACPI altogether
 if you wish to do that.  Can you provide verbose dmesg's for the
 case with pci_link disabled and the case where it is not disabled?
 
 =2D-=20
 John Baldwin <jhb@FreeBSD.org> =A0<>< =A0http://www.FreeBSD.org/~jhb/
 "Power Users Use the Power to Serve" =A0=3D =A0http://www.FreeBSD.org