I'm still evaluating this (quite some time now), but I want to share the interim TL;DR for you to consider.
All those patches are part of a huge rewrite and handling of sprs. Yes the series has "only" (already a lot) 7 patches, but it seems due to dependencies this easily will get 10 or even 20+. We need to look out if we can achive that in a much better backport. I understand that for 2.12 and later this was the right way to do. But for the fix in 2.11 we will need: - do not add a 2.12 type - modify the 2.11 type instead - stop rewriting almost all of the spr cap handling - just set the sane defaults (not much more) Only then this is maintainable without making 2.11 almost 2.12. I'll take a further look after a call that starts now, but I'll likely need your help to achive the above. ** Changed in: qemu (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1761372 Title: backport needed for spectre/meltdown mitigation machine type qemu patches (kvm) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1761372/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs