Messages in this thread | | | Date | Fri, 27 Mar 2009 21:30:53 -0400 (EDT) | From | Len Brown <> | Subject | Re: [PATCH] ACPI: make some IO ports off-limits to AML |
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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
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