On 16.01.20 09:34, Greg Kroah-Hartman wrote: > On Wed, Jan 15, 2020 at 04:54:59PM +0100, David Hildenbrand wrote: >>> >>> And why would 4.9 and 4.4 care about them? >> >> The crashes can be trigger under 4.9 and 4.4. If we decide that we do >> not care, then this series can be dropped. > > Do we have users of memory hotplug that are somehow stuck at those old > versions that can not upgrade? Obviously this didn't work previously > for them, so moving to a modern kernel might be a good reason to get > this new feature :) That's a good point - but usually when you experience a crash it's too late for you to realize that you have to move to a newer release :) It used to work before 4.4 IIRC. (one case I am concerned with is when memory onlining after memory hotplug failed (e.g., because the was an OOM event happening concurrently) - then memory hotunplug will crash your system.) But yeah, I am not aware of a report where somebody actually hit any of these issues on a stable kernel. -- Thanks, David / dhildenb
