Dear bugproxy bot :-) I don't know where the update went, so I copy and paste the email I got as bug update
The upstream commit that enabled QEMU on P9 and I could confirm on Ubuntu 17.10 is the following: commit 5f3066d8b1063b364cd42d64bc011a56fae9c086 Author: David Gibson <da...@gibson.dropbear.id.au> Date: Wed May 10 11:19:16 2017 +1000 target/ppc: Allow workarounds for POWER9 DD1 POWER9 DD1 silicon has some bugs which mean it a) isn't really compliant with the ISA v3.00 and b) require a number of special workarounds in the kernel. At the moment, qemu isn't aware of DD1. For TCG we don't really want it to be (why bother emulating buggy silicon). But with KVM, the guest does need to be aware of DD1 so it can apply the necessary workarounds. Meanwhile, the feature negotiation between qemu and the guest strongly favours architected compatibility modes to "raw" CPU modes. In combination with the above, this means the guest sees architected POWER9 mode, and doesn't apply the DD1 workarounds. Well, unless it has yet another workaround to partially ignore what qemu tells it. This patch addresses this by disabling support for compatibility modes when using KVM on a POWER9 DD1 host. Signed-off-by: David Gibson <da...@gibson.dropbear.id.au> But there is a FFE (Feature Freeze Exception) https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1699968 to get QEMU 2.10 into Ubuntu 17.10 So most probably, no backport will be needed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1692422 Title: [17.10 FEAT] POWER9: libvirt: Updates needed for basic P9 support - P9 guest on P9 host To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1692422/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
