[PATCH] PCI: Add pci=safemode option

[okaya@codeaurora.org (okaya at codeaurora.org)]

On 2018-05-30 00:37, Christoph Hellwig wrote:
> On Tue, May 29, 2018 at 09:41:33PM -0700, Sinan Kaya wrote:
>> Bjorn and I discussed the need for such a "safe" mode feature when you
>> want to bring up PCI for a platform. You want to turn off everything 
>> as
>> a starter and just stick to bare minimum.
> 
> Can we please make it a config option the instead of adding code
> to every kernel?  Also maybe the bringup should be in the name
> to make this more clear?

One other requirement was to have a runtime option rather than compile 
time option.

When someone reported a problem, we wanted to be able to say "use this 
option and see if system boots" without doing any bisects or 
recompilation.

This would be the first step in troubleshooting a system to see if 
fundamental features are working.

I don't mind changing the name
Bjorn mentioned safe option. I made it safemode. I am looking at Bjorn 
for suggestions at this moment.