A new CPU model feature and two new CPU model facilities are
introduced to support AP devices for a KVM guest.
CPU model features:
1. The KVM_S390_VM_CPU_FEAT_AP CPU model feature indicates that
AP facilities are installed. This feature will be enabled by
the kernel only if the AP facilities are installed on the linux
host. This feature must be turned on from userspace to access
AP devices from the KVM guest. The QEMU command line to turn
this feature looks something like this:
qemu-system-s390x ... -cpu xxx,ap=on
CPU model facilities:
1. The S390_FEAT_AP_QUERY_CONFIG_INFO feature indicates the AP Query
Configuration Information (QCI) facility is installed. This feature
will be enabled by the kernel only if the QCI is installed on
the host.
2. The S390_FEAT_AP_FACILITY_TEST feature indicates that the AP
Facility Test (APFT) facility is installed. This feature will
be enabled by the kernel only if the APFT facility is installed
on the host.
Signed-off-by: Tony Krowiak <akrow...@linux.vnet.ibm.com>
---
target/s390x/cpu_features.c | 3 +++
target/s390x/cpu_features_def.h | 3 +++
target/s390x/cpu_models.c | 2 ++
target/s390x/gen-features.c | 3 +++
target/s390x/kvm.c | 1 +
5 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/target/s390x/cpu_features.c b/target/s390x/cpu_features.c
index a5619f2..1abe987 100644
--- a/target/s390x/cpu_features.c
+++ b/target/s390x/cpu_features.c
@@ -36,8 +36,10 @@ static const S390FeatDef s390_features[] = {
FEAT_INIT("srs", S390_FEAT_TYPE_STFL, 9, "Sense-running-status facility"),
FEAT_INIT("csske", S390_FEAT_TYPE_STFL, 10, "Conditional-SSKE facility"),
FEAT_INIT("ctop", S390_FEAT_TYPE_STFL, 11, "Configuration-topology
facility"),
+ FEAT_INIT("qci", S390_FEAT_TYPE_STFL, 12, "Query AP Configuration
facility"),
FEAT_INIT("ipter", S390_FEAT_TYPE_STFL, 13, "IPTE-range facility"),
FEAT_INIT("nonqks", S390_FEAT_TYPE_STFL, 14, "Nonquiescing key-setting
facility"),
+ FEAT_INIT("apft", S390_FEAT_TYPE_STFL, 15, "Adjunct Processor Facilities
Test facility"),
FEAT_INIT("etf2", S390_FEAT_TYPE_STFL, 16, "Extended-translation facility
2"),
FEAT_INIT("msa-base", S390_FEAT_TYPE_STFL, 17, "Message-security-assist
facility (excluding subfunctions)"),
FEAT_INIT("ldisp", S390_FEAT_TYPE_STFL, 18, "Long-displacement facility"),
@@ -125,6 +127,7 @@ static const S390FeatDef s390_features[] = {
FEAT_INIT("dateh2", S390_FEAT_TYPE_MISC, 0, "DAT-enhancement facility 2"),
FEAT_INIT("cmm", S390_FEAT_TYPE_MISC, 0, "Collaborative-memory-management
facility"),
+ FEAT_INIT("ap", S390_FEAT_TYPE_MISC, 0, "AP facilities installed"),
FEAT_INIT("plo-cl", S390_FEAT_TYPE_PLO, 0, "PLO Compare and load (32 bit
in general registers)"),
FEAT_INIT("plo-clg", S390_FEAT_TYPE_PLO, 1, "PLO Compare and load (64 bit
in parameter list)"),
diff --git a/target/s390x/cpu_features_def.h b/target/s390x/cpu_features_def.h
index 7c5915c..8998b65 100644
--- a/target/s390x/cpu_features_def.h
+++ b/target/s390x/cpu_features_def.h
@@ -27,8 +27,10 @@ typedef enum {
S390_FEAT_SENSE_RUNNING_STATUS,
S390_FEAT_CONDITIONAL_SSKE,
S390_FEAT_CONFIGURATION_TOPOLOGY,
+ S390_FEAT_AP_QUERY_CONFIG_INFO,
S390_FEAT_IPTE_RANGE,
S390_FEAT_NONQ_KEY_SETTING,
+ S390_FEAT_AP_FACILITIES_TEST,
S390_FEAT_EXTENDED_TRANSLATION_2,
S390_FEAT_MSA,
S390_FEAT_LONG_DISPLACEMENT,
@@ -118,6 +120,7 @@ typedef enum {
/* Misc */
S390_FEAT_DAT_ENH_2,
S390_FEAT_CMM,
+ S390_FEAT_AP,
/* PLO */
S390_FEAT_PLO_CL,
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index cf82589..7e2af09 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -769,6 +769,8 @@ static void check_consistency(const S390CPUModel *model)
{ S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
{ S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
{ 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 },
};
int i;
diff --git a/target/s390x/gen-features.c b/target/s390x/gen-features.c
index 0cdbc15..0d5b0f7 100644
--- a/target/s390x/gen-features.c
+++ b/target/s390x/gen-features.c
@@ -447,6 +447,9 @@ static uint16_t full_GEN12_GA1[] = {
S390_FEAT_ADAPTER_INT_SUPPRESSION,
S390_FEAT_EDAT_2,
S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2,
+ S390_FEAT_AP_QUERY_CONFIG_INFO,
+ S390_FEAT_AP_FACILITIES_TEST,
+ S390_FEAT_AP,
};
static uint16_t full_GEN12_GA2[] = {
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index fbc887e..33e5ec3 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -2178,6 +2178,7 @@ static int kvm_to_feat[][2] = {
{ KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI},
{ KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF},
{ KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS},
+ { KVM_S390_VM_CPU_FEAT_AP, S390_FEAT_AP},
};
static int query_cpu_feat(S390FeatBitmap features)
--
1.7.1
