On Thu, Sep 13, 2018 at 02:18:27PM +0200, Martin Schwidefsky wrote: > We may get something working with a common code mmu_gather, but I fear the > day someone makes a "minor" change to that subtly break s390. The debugging of > TLB related problems is just horrible.. Yes it is, not just on s390 :/ And this is not something that's easy to write sanity checks for either AFAIK. I mean we can do a few multi-threaded mmap()/mprotect()/munmap() proglets and catch faults, but that doesn't even get close to covering all the 'fun' spots. Then again, you're more than welcome to the new: MMU GATHER AND TLB INVALIDATION section in MAINTAINERS.
