Re: Options for handling buggy PCI/PCI-X hardware when MSI is enabled

[Andi Kleen <ak@suse.de>]

"Nakajima, Jun" <jun.nakajima@intel.com> writes:

> "Blacklist" approach using PCI_quirks.c
> ---------------------------------------
> Pros
>    - Places the burden to fix broken HW on the HW owners
>    - Consistent with the current MSI patch (enable all by default)
>    - A simple fix and minimum patch size (Patch already exists)
> Cons
>    - Core kernel impact (larger image size)

And worse one has to submit patches for the core kernel all the time.
And it's a single table, which means there will be lots of conflicts 
when merging patches.

I think the new API approach is much better. Best would be if there
was a relatively simple standard way to add it to drivers  (like a 
standard module option). Then one could add it to a lot of drivers 
with default to off. Users can test then and if it works the default
can be changed.

-Andi