[Qemu-devel] [PATCH v2 1/3] s390x/cpumodel: mepochptff: warn when no mepoch and re-align group init

[Collin Walling <walling@linux.ibm.com>]

The extended PTFF features (qsie, qtoue, stoe, stoue) are dependent
on the multiple-epoch facility (mepoch). Let's print a warning if these
features are enabled without mepoch.

While we're at it, let's move the FEAT_GROUP_INIT for mepochptff down
the s390_feature_groups list so it can be properly indexed with its
generated S390FeatGroup enum.

Signed-off-by: Collin Walling <walling@linux.ibm.com>
---
 target/s390x/cpu_features.c | 2 +-
 target/s390x/cpu_models.c   | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/target/s390x/cpu_features.c b/target/s390x/cpu_features.c
index 60cfeba48f..1843c84aaa 100644
--- a/target/s390x/cpu_features.c
+++ b/target/s390x/cpu_features.c
@@ -456,7 +456,6 @@ static S390FeatGroupDef s390_feature_groups[] = {
     FEAT_GROUP_INIT("plo", PLO, "Perform-locked-operation facility"),
     FEAT_GROUP_INIT("tods", TOD_CLOCK_STEERING, "Tod-clock-steering facility"),
     FEAT_GROUP_INIT("gen13ptff", GEN13_PTFF, "PTFF enhancements introduced with z13"),
-    FEAT_GROUP_INIT("mepochptff", MULTIPLE_EPOCH_PTFF, "PTFF enhancements introduced with Multiple-epoch facility"),
     FEAT_GROUP_INIT("msa", MSA, "Message-security-assist facility"),
     FEAT_GROUP_INIT("msa1", MSA_EXT_1, "Message-security-assist-extension 1 facility"),
     FEAT_GROUP_INIT("msa2", MSA_EXT_2, "Message-security-assist-extension 2 facility"),
@@ -466,6 +465,7 @@ static S390FeatGroupDef s390_feature_groups[] = {
     FEAT_GROUP_INIT("msa6", MSA_EXT_6, "Message-security-assist-extension 6 facility"),
     FEAT_GROUP_INIT("msa7", MSA_EXT_7, "Message-security-assist-extension 7 facility"),
     FEAT_GROUP_INIT("msa8", MSA_EXT_8, "Message-security-assist-extension 8 facility"),
+    FEAT_GROUP_INIT("mepochptff", MULTIPLE_EPOCH_PTFF, "PTFF enhancements introduced with Multiple-epoch facility"),
 };
 
 const S390FeatGroupDef *s390_feat_group_def(S390FeatGroup group)
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index 7c253ff308..b42b5fd327 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -788,6 +788,10 @@ static void check_consistency(const S390CPUModel *model)
         { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
         { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP },
         { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP },
+        { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH },
+        { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH },
+        { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH },
+        { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH },
     };
     int i;
 
-- 
2.20.1