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| author |   Christian Borntraeger <borntraeger@de.ibm.com> | 2018-12-28 10:59:06 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2019-04-18 12:57:53 +0200 |
| commit | 173aec2d5a9fa5f40e462661a8283fcafe04764f (patch) | |
| tree | 6dafa4368e598b81be1ee78ead45f93485e44cb3 /arch/s390/kvm | |
| parent | KVM: s390: provide query function for instructions returning 32 byte (diff) | |
| download | linux-dev-173aec2d5a9fa5f40e462661a8283fcafe04764f.tar.xz linux-dev-173aec2d5a9fa5f40e462661a8283fcafe04764f.zip | |
KVM: s390: add enhanced sort facilty to cpu model
This enables stfle.150 and adds the subfunctions for SORTL. Bit 150 is
added to the list of facilities that will be enabled when there is no
cpu model involved as sortl requires no additional handling from
userspace, e.g. for migration.
Please note that a cpu model enabled user space can and will have the
final decision on the facility bits for a guests.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'arch/s390/kvm')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 336e591d94eb..757f76bba9ea 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -334,6 +334,8 @@ static inline void __insn32_query(unsigned int opcode, u8 query[32]) : "cc"); } +#define INSN_SORTL 0xb938 + static void kvm_s390_cpu_feat_init(void) { int i; @@ -385,6 +387,9 @@ static void kvm_s390_cpu_feat_init(void) __cpacf_query(CPACF_KDSA, (cpacf_mask_t *) kvm_s390_available_subfunc.kdsa); + if (test_facility(150)) /* SORTL */ + __insn32_query(INSN_SORTL, kvm_s390_available_subfunc.sortl); + if (MACHINE_HAS_ESOP) allow_cpu_feat(KVM_S390_VM_CPU_FEAT_ESOP); /* @@ -1351,6 +1356,11 @@ static int kvm_s390_set_processor_subfunc(struct kvm *kvm, VM_EVENT(kvm, 3, "SET: guest KDSA subfunc 0x%16.16lx.%16.16lx", ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[0], ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[1]); + VM_EVENT(kvm, 3, "SET: guest SORTL subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", + ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[0], + ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[1], + ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[2], + ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[3]); return 0; } @@ -1522,6 +1532,11 @@ static int kvm_s390_get_processor_subfunc(struct kvm *kvm, VM_EVENT(kvm, 3, "GET: guest KDSA subfunc 0x%16.16lx.%16.16lx", ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[0], ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[1]); + VM_EVENT(kvm, 3, "GET: guest SORTL subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", + ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[0], + ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[1], + ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[2], + ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[3]); return 0; } @@ -1580,6 +1595,11 @@ static int kvm_s390_get_machine_subfunc(struct kvm *kvm, VM_EVENT(kvm, 3, "GET: host KDSA subfunc 0x%16.16lx.%16.16lx", ((unsigned long *) &kvm_s390_available_subfunc.kdsa)[0], ((unsigned long *) &kvm_s390_available_subfunc.kdsa)[1]); + VM_EVENT(kvm, 3, "GET: host SORTL subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", + ((unsigned long *) &kvm_s390_available_subfunc.sortl)[0], + ((unsigned long *) &kvm_s390_available_subfunc.sortl)[1], + ((unsigned long *) &kvm_s390_available_subfunc.sortl)[2], + ((unsigned long *) &kvm_s390_available_subfunc.sortl)[3]); return 0; } |