Public bug reported:
New systems with a cpu model of gen15a or gen15b will no longer provide
the csske facility. This will prevent a nested KVM hypervisor to detect
the cpu type as z10..z14. Instead it will fall back to z9.
We need a backport of
commit eaf6f642abf1d4d24791b70728d4068428fc4658
Author: Christian Borntraeger <borntrae...@de.ibm.com>
AuthorDate: Mon Apr 29 05:02:43 2019 -0400
Commit: Cornelia Huck <coh...@redhat.com>
CommitDate: Tue May 21 16:59:16 2019 +0200
s390x/cpumodel: ignore csske for expansion
csske will be removed in a future machine. Ignore it for expanding the
cpu model. Otherwise qemu falls back to z9.
Signed-off-by: Christian Borntraeger <borntrae...@de.ibm.com>
Cc: qemu-sta...@nongnu.org
Reviewed-by: David Hildenbrand <da...@redhat.com>
Message-Id: <20190429090250.7648-3-borntrae...@de.ibm.com>
Signed-off-by: Cornelia Huck <coh...@redhat.com>
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;
in the qemu package of all relevant ubuntu level that provide a cpu
model. (18.04, 18.10,19.04)
** Affects: ubuntu-z-systems
Importance: High
Assignee: Canonical Server Team (canonical-server)
Status: Triaged
** Affects: qemu (Ubuntu)
Importance: Undecided
Assignee: Skipper Bug Screeners (skipper-screen-team)
Status: New
** Tags: architecture-s39064 bugnameltc-177874 severity-high
targetmilestone-inin1910
** Tags added: architecture-s39064 bugnameltc-177874 severity-high
targetmilestone-inin1910
** Changed in: ubuntu
Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team)
** Package changed: ubuntu => qemu (Ubuntu)
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https://bugs.launchpad.net/bugs/1830681
Title:
[UBUNTU] QEMU toleration patch necessary to run a nested KVM in an
gen15 cpu model
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