Re: [Ksummit-discuss] [MAINTAINERS SUMMIT] & [TECH TOPIC] Improve regression tracking

On Wed, Jul 05, 2017 at 04:06:07PM +0200, Greg KH wrote:

I don't mean to poo-poo the idea, but please realize that around 75% of
the kernel is hardware/arch support, so that means that 75% of the
changes/fixes deal with hardware things (yes, change is in direct
correlation to size of the codebase in the tree, strange but true).

Then add in all the fixes for concurrency/locking issues and so on
that're hard to reliably reproduce as well...