On Tue, Jun 19, 2012 at 5:36 AM, Bjorn Helgaas [off-list ref] wrote:

I'm not opposed to something like this, if people think it's useful.

This patch sets the node quite early, before we even look at the _PXM
information in pci_acpi_scan_root().  That means if the BIOS does
supply a _PXM method and the user gives this argument, the
user-supplied info is silently overwritten.  To me it would make more
sense to handle an option like this *after* we look for _PXM info.
That way it could be used to compensate for both missing and incorrect
_PXM info.

yes, we can only let user input and hostbridge touch that array.

but i'd like to only handle missing _PXM case.

If the BIOS provide wrong _PXM, that BIOS really should be fixed at first.

Yinghai