[openib-general] [discuss] Re: 2.6.19-rc4: known unfixed regressions (v3)

[Matthew Wilcox]

On Tue, Nov 07, 2006 at 09:50:54AM -0800, Aaron Durbin wrote:
> Maybe Andi can shed some light on the reasoning for not checking e820
> to see if the entire MMCONFIG region is reported as reserved in the
> e820 map.  I can patch up the pci_mmcfg_insert_resource to verify if
> the region that is exported by ACPI is reserved in e820 and printk an
> error message if it is not and skip the resource insertion.
> 
> Does that seem like a good avenue to pursue?

Sounds much better than Eric's idea of maximum bus number currently in
use (which was also my first thought).

But rather than skipping the resource insertion, I believe you should
limit its size to the largest multiple of 1MB that will fit within the
reserved region.