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From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Chase Douglas <chase.douglas@canonical.com>
Cc: linux-acpi@vger.kernel.org
Subject: Re: Quirking acpi_enforce_resources
Date: Mon, 1 Mar 2010 22:22:02 +0000	[thread overview]
Message-ID: <20100301222202.GA25116@srcf.ucam.org> (raw)
In-Reply-To: <1267481726.22999.13.camel@cndougla-ubuntu>

On Mon, Mar 01, 2010 at 05:15:26PM -0500, Chase Douglas wrote:

> I understand your points, but from the user's perspective they had
> something that worked perfectly fine before, and now it doesn't. Have
> there been any reports of anyone's hardware being adversely affected by
> doubly acquiring the acpi region? Beyond that, have there been any
> reports of any adverse affects of any kind?

I really don't understand your position here. Like I said, the 
probability of a collision between ACPI and the OS is low. On the other 
hand, the potential outcome of such a collision is hardware damage. This 
isn't even close to being something that should be considered.

> I'm not advocating for enabling acpi_enforce_resources=lax across the
> board. That would be foolish, especially since there is an existing acpi
> driver that would be harmed. However, a whitelist of known-working
> hardware would allow us to cater to users needs while still being fairly
> careful.

How are you defining "known-working"? You've verified that the system 
management code on the hardware in question makes no accesses to the 
smbus?

-- 
Matthew Garrett | mjg59@srcf.ucam.org

  reply	other threads:[~2010-03-01 22:22 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-01 21:01 Quirking acpi_enforce_resources Chase Douglas
2010-03-01 22:04 ` Matthew Garrett
2010-03-01 22:15   ` Chase Douglas
2010-03-01 22:22     ` Matthew Garrett [this message]
2010-03-01 22:35       ` Chase Douglas
2010-03-01 22:45         ` Matthew Garrett

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