Public bug reported: A nested KVM hypervisor has problems to detect the cpu type as z10..z14 with no csske facility available. Instead it will fall back to z9.
We need a backport of commit eaf6f642abf1d4d24791b70728d4068428fc4658 Author: Christian Borntraeger <[email protected]> AuthorDate: Mon Apr 29 05:02:43 2019 -0400 Commit: Cornelia Huck <[email protected]> CommitDate: Tue May 21 16:59:16 2019 +0200 s390x/cpumodel: ignore csske for expansion ... Signed-off-by: Christian Borntraeger <[email protected]> Cc: [email protected] Reviewed-by: David Hildenbrand <[email protected]> Message-Id: <[email protected]> Signed-off-by: Cornelia Huck <[email protected]> diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c index e5afa15512..b4bb5de635 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -1322,6 +1322,8 @@ static void init_ignored_base_feat(void) S390_FEAT_KM_TDEA_192, S390_FEAT_KIMD_SHA_1, S390_FEAT_KLMD_SHA_1, + /* CSSKE is deprecated on newer generations */ + S390_FEAT_CONDITIONAL_SSKE, }; int i; This patch is also needed for Ubuntu 18.04 and 19.04. 18.10 will be out of service in July..... ** Affects: qemu (Ubuntu) Importance: Undecided Assignee: Skipper Bug Screeners (skipper-screen-team) Status: Triaged ** Affects: qemu (Ubuntu Bionic) Importance: Undecided Status: Triaged ** Affects: qemu (Ubuntu Cosmic) Importance: Undecided Status: Triaged ** Affects: qemu (Ubuntu Disco) Importance: Undecided Status: Triaged ** Affects: qemu (Ubuntu Eoan) Importance: Undecided Assignee: Skipper Bug Screeners (skipper-screen-team) Status: Triaged ** Tags: architecture-s39064 bugnameltc-177881 severity-high targetmilestone-inin1910 ** Tags added: architecture-s39064 bugnameltc-177881 severity-high targetmilestone-inin1910 ** Changed in: ubuntu Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team) ** Package changed: ubuntu => qemu (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1830704 Title: [UBUNTU] QEMU toleration patch to ensure cpu detection in a nested KVM To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1830704/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
