| Message ID | 1542904555-1136-5-git-send-email-pmorel@linux.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | s390x/vfio: VFIO-AP interrupt control interception | expand |
On 11/22/18 11:35 AM, Pierre Morel wrote: > A new CPU model facilities is introduced to support AP devices > interruption interception for a KVM guest. > > CPU model facility: > > The S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, CPU facility indicates > whether AP interruption interception is available to the guest. > This feature will be enabled only if the AP instructions are > available on the linux host and AQIC facility is installed on > the host. > > This feature must be turned on from userspace to intercept AP > instructions on the KVM guest. The QEMU command line to turn > this feature on looks something like this: > > qemu-system-s390x ... -cpu xxx,aqci=on ... > > Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> > --- > target/s390x/cpu_features.c | 1 + > target/s390x/cpu_features_def.h | 1 + > target/s390x/cpu_models.c | 1 + > target/s390x/gen-features.c | 1 + > 4 files changed, 4 insertions(+) > > diff --git a/target/s390x/cpu_features.c b/target/s390x/cpu_features.c > index 60cfeba..c464abf 100644 > --- a/target/s390x/cpu_features.c > +++ b/target/s390x/cpu_features.c > @@ -84,6 +84,7 @@ static const S390FeatDef s390_features[] = { > FEAT_INIT("sema", S390_FEAT_TYPE_STFL, 59, "Semaphore-assist facility"), > FEAT_INIT("tsi", S390_FEAT_TYPE_STFL, 60, "Time-slice Instrumentation facility"), > FEAT_INIT("ri", S390_FEAT_TYPE_STFL, 64, "CPU runtime-instrumentation facility"), > + FEAT_INIT("aqic", S390_FEAT_TYPE_STFL, 65, "AP-Queue interruption Control facility"), > FEAT_INIT("zpci", S390_FEAT_TYPE_STFL, 69, "z/PCI facility"), > FEAT_INIT("aen", S390_FEAT_TYPE_STFL, 71, "General-purpose-adapter-event-notification facility"), > FEAT_INIT("ais", S390_FEAT_TYPE_STFL, 72, "General-purpose-adapter-interruption-suppression facility"), > diff --git a/target/s390x/cpu_features_def.h b/target/s390x/cpu_features_def.h > index 5fc7e7b..3f22780 100644 > --- a/target/s390x/cpu_features_def.h > +++ b/target/s390x/cpu_features_def.h > @@ -72,6 +72,7 @@ typedef enum { > S390_FEAT_SEMAPHORE_ASSIST, > S390_FEAT_TIME_SLICE_INSTRUMENTATION, > S390_FEAT_RUNTIME_INSTRUMENTATION, > + S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, > S390_FEAT_ZPCI, > S390_FEAT_ADAPTER_EVENT_NOTIFICATION, > S390_FEAT_ADAPTER_INT_SUPPRESSION, > diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c > index 7c253ff..6b5e94b 100644 > --- a/target/s390x/cpu_models.c > +++ b/target/s390x/cpu_models.c > @@ -788,6 +788,7 @@ 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_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, > }; > int i; > > diff --git a/target/s390x/gen-features.c b/target/s390x/gen-features.c > index 70015ea..b051221 100644 > --- a/target/s390x/gen-features.c > +++ b/target/s390x/gen-features.c > @@ -448,6 +448,7 @@ static uint16_t full_GEN12_GA1[] = { > S390_FEAT_EDAT_2, > S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, > S390_FEAT_AP_QUERY_CONFIG_INFO, > + S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, > S390_FEAT_AP_FACILITIES_TEST, > S390_FEAT_AP, > }; Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> >
diff --git a/target/s390x/cpu_features.c b/target/s390x/cpu_features.c index 60cfeba..c464abf 100644 --- a/target/s390x/cpu_features.c +++ b/target/s390x/cpu_features.c @@ -84,6 +84,7 @@ static const S390FeatDef s390_features[] = { FEAT_INIT("sema", S390_FEAT_TYPE_STFL, 59, "Semaphore-assist facility"), FEAT_INIT("tsi", S390_FEAT_TYPE_STFL, 60, "Time-slice Instrumentation facility"), FEAT_INIT("ri", S390_FEAT_TYPE_STFL, 64, "CPU runtime-instrumentation facility"), + FEAT_INIT("aqic", S390_FEAT_TYPE_STFL, 65, "AP-Queue interruption Control facility"), FEAT_INIT("zpci", S390_FEAT_TYPE_STFL, 69, "z/PCI facility"), FEAT_INIT("aen", S390_FEAT_TYPE_STFL, 71, "General-purpose-adapter-event-notification facility"), FEAT_INIT("ais", S390_FEAT_TYPE_STFL, 72, "General-purpose-adapter-interruption-suppression facility"), diff --git a/target/s390x/cpu_features_def.h b/target/s390x/cpu_features_def.h index 5fc7e7b..3f22780 100644 --- a/target/s390x/cpu_features_def.h +++ b/target/s390x/cpu_features_def.h @@ -72,6 +72,7 @@ typedef enum { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_TIME_SLICE_INSTRUMENTATION, S390_FEAT_RUNTIME_INSTRUMENTATION, + S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_ZPCI, S390_FEAT_ADAPTER_EVENT_NOTIFICATION, S390_FEAT_ADAPTER_INT_SUPPRESSION, diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c index 7c253ff..6b5e94b 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -788,6 +788,7 @@ 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_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, }; int i; diff --git a/target/s390x/gen-features.c b/target/s390x/gen-features.c index 70015ea..b051221 100644 --- a/target/s390x/gen-features.c +++ b/target/s390x/gen-features.c @@ -448,6 +448,7 @@ static uint16_t full_GEN12_GA1[] = { S390_FEAT_EDAT_2, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_AP_QUERY_CONFIG_INFO, + S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP, };
A new CPU model facilities is introduced to support AP devices interruption interception for a KVM guest. CPU model facility: The S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, CPU facility indicates whether AP interruption interception is available to the guest. This feature will be enabled only if the AP instructions are available on the linux host and AQIC facility is installed on the host. This feature must be turned on from userspace to intercept AP instructions on the KVM guest. The QEMU command line to turn this feature on looks something like this: qemu-system-s390x ... -cpu xxx,aqci=on ... Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> --- target/s390x/cpu_features.c | 1 + target/s390x/cpu_features_def.h | 1 + target/s390x/cpu_models.c | 1 + target/s390x/gen-features.c | 1 + 4 files changed, 4 insertions(+)