Messages in this thread | | | Date | Fri, 14 Jul 2006 09:57:54 -0400 | From | Chuck Ebbert <> | Subject | Re: [patch, take 3] PCI: use ACPI to verify extended config space on x86 |
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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/
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