Re: [PATCH] intel_iommu: Disable vfio and kvm interrupt assignment when unsafe

[Joerg Roedel <joro@8bytes.org>]

On Thu, Feb 07, 2013 at 09:02:38PM +0000, David Woodhouse wrote:
> Backtraces add visibility and have proven to be extremely useful in the
> past for getting people to actually *fix* broken BIOSes.
> 
> When kerneloops.org was running, it also gave very good statistics which
> helped to apply pressure.

That is true in general, but does not apply to the two warnings in
question here. One warning checks for a hypothetical hardware problem
and the other warning could happen for several reasons, not only a
firmware bug.

It would make sense to put a warning in the respective places where a
firmware problem is detected, though. The parse_ioapics_under_ir()
function is a candidate where it would make sense, for example. But in
the error path of the intel_enable_irq_remapping() function a pr_warn
would do the same job.


	Joerg