Alexander Graf wrote:
Hmmh, now that x86 has solved all the problems we should probably move away from using the same page table for userspace and guest too. That would make this "workaround" superfluous and memslots would work just the same on s390 as they do on x86. I've put it on my todo list.S390 requires vmas for guests to be < 256 GB. So we need to directly export mmaps "try to use this vma as start address" feature to not accidently get over that limit.
For now, this looks good to me.