lkml.org 
[lkml]   [2006]   [Jul]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch, take 3] PCI: use ACPI to verify extended config space on x86
In-Reply-To: <1152869988.3159.25.camel@laptopd505.fenrus.org>

On Fri, 14 Jul 2006 11:39:48 +0200, Arjan van de Ven wrote:

> > Extend the verification for PCI-X/PCI-Express extended config
> > space pointer. Checks whether the MCFG address range is listed
> > as a motherboard resource, per the PCI firmware spec.
>
> I'm still not quite happy about this; the entire point of the check is
> that we CAN'T trust the ACPI implementation, and want a second opinion.
> This patch basically asks the ACPI implementation if we can trust the
> ACPI implementation. I'm not sure that's a good idea.
> And I understood that most issues went away with the more relaxed check
> that is in gregkh's tree already (if not in mainline, I should check
> that).

The more-relaxed check is in mainline. I wrote it, but it didn't even
fix the problem on my own machine. This did.

According to Rajesh, the spec doesn't require the MCFG space to be
e820-reserved, so that's not really a valid check.

--
Chuck
"You can't read a newspaper if you can't read." --George W. Bush
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-07-14 16:07    [W:0.035 / U:0.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site