Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first

Yinghai Lu
2012-05-29T17:56:47Z

On Sat, May 26, 2012 at 8:01 AM, Bjorn Helgaas <bhelgaas@google.com> wrote:
> Another bug here: we're trying to restrict the *bus* addresses we
> allocate, but we're applying the limits to *CPU* addresses.
> Therefore, this only works as intended when CPU addresses are the same
> as bus addresses, i.e., when the host bridge applies no address
> translation.  That happens to be the case for x86, but is not the case
> in general.
>
> I think we need a third patch to fix this problem.

yes.