diff options
Diffstat (limited to 'target/s390x/kvm.c')
| -rw-r--r-- | target/s390x/kvm.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c index a2d5ad7..f13eff6 100644 --- a/target/s390x/kvm.c +++ b/target/s390x/kvm.c @@ -105,6 +105,7 @@ #define DIAG_TIMEREVENT 0x288 #define DIAG_IPL 0x308 +#define DIAG_SET_CONTROL_PROGRAM_CODES 0x318 #define DIAG_KVM_HYPERCALL 0x500 #define DIAG_KVM_BREAKPOINT 0x501 @@ -602,6 +603,11 @@ int kvm_arch_put_registers(CPUState *cs, int level) cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ETOKEN; } + if (can_sync_regs(cs, KVM_SYNC_DIAG318)) { + cs->kvm_run->s.regs.diag318 = env->diag318_info; + cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318; + } + /* Finally the prefix */ if (can_sync_regs(cs, KVM_SYNC_PREFIX)) { cs->kvm_run->s.regs.prefix = env->psa; @@ -741,6 +747,10 @@ int kvm_arch_get_registers(CPUState *cs) } } + if (can_sync_regs(cs, KVM_SYNC_DIAG318)) { + env->diag318_info = cs->kvm_run->s.regs.diag318; + } + return 0; } @@ -1601,6 +1611,27 @@ static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run) return -ENOENT; } +static void handle_diag_318(S390CPU *cpu, struct kvm_run *run) +{ + uint64_t reg = (run->s390_sieic.ipa & 0x00f0) >> 4; + uint64_t diag318_info = run->s.regs.gprs[reg]; + + /* + * DIAG 318 can only be enabled with KVM support. As such, let's + * ensure a guest cannot execute this instruction erroneously. + */ + if (!s390_has_feat(S390_FEAT_DIAG_318)) { + kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION); + } + + cpu->env.diag318_info = diag318_info; + + if (can_sync_regs(CPU(cpu), KVM_SYNC_DIAG318)) { + run->s.regs.diag318 = diag318_info; + run->kvm_dirty_regs |= KVM_SYNC_DIAG318; + } +} + #define DIAG_KVM_CODE_MASK 0x000000000000ffff static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb) @@ -1620,6 +1651,9 @@ static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb) case DIAG_IPL: kvm_handle_diag_308(cpu, run); break; + case DIAG_SET_CONTROL_PROGRAM_CODES: + handle_diag_318(cpu, run); + break; case DIAG_KVM_HYPERCALL: r = handle_hypercall(cpu, run); break; @@ -2464,6 +2498,11 @@ void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp) */ set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB, model->features); + /* DIAGNOSE 0x318 is not supported under protected virtualization */ + if (!s390_is_pv() && kvm_check_extension(kvm_state, KVM_CAP_S390_DIAG318)) { + set_bit(S390_FEAT_DIAG_318, model->features); + } + /* strip of features that are not part of the maximum model */ bitmap_and(model->features, model->features, model->def->full_feat, S390_FEAT_MAX); |