Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI motherboard resources

Jesse Barnes
2007-05-23T22:55:39Z

On Wednesday, May 23, 2007 3:48 pm Linus Torvalds wrote:
> On Thu, 24 May 2007, Olivier Galibert wrote:
> > Isn't that a mac-intel instant killer? AFAIK they don't have
> > type1, period.
>
> mac-intel are totally standard Intel chipsets. They have all of
> conf1/conf2/mmconfig afaik.
>
> I just happily booted my mac-mini with "pci=nommconf", nothing bad
> happened, and the kernel says
>
> PCI: Using configuration type 1
>
> and I don't think you even _can_ disable conf1 type accesses: they
> are deep in the Intel chipsets.

After I sent my last message I realized the same thing... though I
occasionally hear people talk about removing it (I seriously doubt that
will ever happen). I don't even think there's a way to disable type 1
config access on Intel chipsets...

So the last patch is ok then, as long as we can find mmconfig space in
the first place, but that's a separate problem for another set of
patches (ones that seem to be working fairly well now btw).

Jesse