Re: [PATCH 08/18 v2] powerpc: Do not probe PCI buses or eBus devices if CMO is enabled

Paul Mackerras wrote:

Robert Jennings writes:

quoted

From: Brian King <redacted>

The Cooperative Memory Overcommit (CMO) on System p does not currently
support native PCI devices or eBus devices when enabled.

Then why would we get any native PCI or eBus devices in the device
tree?

We shouldn't. The reason the patch exists is so that *if* firmware were to
add support for physical PCI/eBus devices in CMO mode in the future, then
we could get into a scenario where there are such devices in the device
tree and we would want to prevent them from getting initialized
on a kernel without the code needed to support such a feature.

-Brian

-- 
Brian King
Linux on Power Virtualization
IBM Linux Technology Center