From: Len Brown <lenb@kernel.org>
To: Matthew Garrett <mjg@redhat.com>
Cc: linux-acpi@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ACPI: make some IO ports off-limits to AML
Date: Fri, 27 Mar 2009 21:30:53 -0400 (EDT) [thread overview]
Message-ID: <alpine.LFD.2.00.0903272127350.26419@localhost.localdomain> (raw)
In-Reply-To: <20090204061505.GD28321@srcf.ucam.org>
On Wed, 4 Feb 2009, Matthew Garrett wrote:
> On Tue, Feb 03, 2009 at 10:59:43PM -0500, Len Brown wrote:
>
> > Start using this interface to prevent AML from accessing
> > some well known IO addresses that the OS "owns".
>
> It might be nice to extend this to cover the other ports listed at
> http://www.microsoft.com/whdc/archive/BIOSAML.mspx if (and only if) the
> firmware requested _OSI("Windows 2001") or later.
Right. We reverted this initialization-time check for 2.6.29
b/c it had false positives of opregions that were never used.
For 2.6.30 we replaced it with a run-time check, and the check
follows the compatibility rules referenced above.
http://git.kernel.org/?p=linux/kernel/git/lenb/linux-acpi-2.6.git;a=commitdiff;h=7f0719039085cc40114abce84cf29fe57da226f4
cheers,
Len Brown, Intel Open Source Technology Center
prev parent reply other threads:[~2009-03-28 1:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-04 3:59 [PATCH] ACPI: make some IO ports off-limits to AML Len Brown
2009-02-04 6:15 ` Matthew Garrett
2009-03-28 1:30 ` Len Brown [this message]
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