diff options
Diffstat (limited to 'target-s390x')
| -rw-r--r-- | target-s390x/cpu.c | 6 | ||||
| -rw-r--r-- | target-s390x/cpu.h | 4 | ||||
| -rw-r--r-- | target-s390x/kvm.c | 48 |
3 files changed, 58 insertions, 0 deletions
diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c index ff57b806e4..f1319e55a6 100644 --- a/target-s390x/cpu.c +++ b/target-s390x/cpu.c @@ -83,6 +83,7 @@ static void s390_cpu_reset(CPUState *s) S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); CPUS390XState *env = &cpu->env; + env->pfault_token = -1UL; s390_del_running_cpu(cpu); scc->parent_reset(s); #if !defined(CONFIG_USER_ONLY) @@ -105,6 +106,8 @@ static void s390_cpu_initial_reset(CPUState *s) /* architectured initial values for CR 0 and 14 */ env->cregs[0] = CR0_RESET; env->cregs[14] = CR14_RESET; + + env->pfault_token = -1UL; } /* CPUClass:reset() */ @@ -123,6 +126,9 @@ static void s390_cpu_full_reset(CPUState *s) /* architectured initial values for CR 0 and 14 */ env->cregs[0] = CR0_RESET; env->cregs[14] = CR14_RESET; + + env->pfault_token = -1UL; + /* set halted to 1 to make sure we can add the cpu in * s390_ipl_cpu code, where CPUState::halted is set back to 0 * after incrementing the cpu counter */ diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 96c2b4a7e9..b09ff92099 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -121,6 +121,10 @@ typedef struct CPUS390XState { uint64_t cputm; uint32_t todpr; + uint64_t pfault_token; + uint64_t pfault_compare; + uint64_t pfault_select; + CPU_COMMON /* reset does memset(0) up to here */ diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index f60ccdc326..9430a35b02 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -87,12 +87,14 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = { }; static int cap_sync_regs; +static int cap_async_pf; static void *legacy_s390_alloc(size_t size); int kvm_arch_init(KVMState *s) { cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS); + cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF); if (!kvm_check_extension(s, KVM_CAP_S390_GMAP) || !kvm_check_extension(s, KVM_CAP_S390_COW)) { phys_mem_set_alloc(legacy_s390_alloc); @@ -178,6 +180,29 @@ int kvm_arch_put_registers(CPUState *cs, int level) return ret; } + if (cap_async_pf) { + reg.id = KVM_REG_S390_PFTOKEN; + reg.addr = (__u64)&(env->pfault_token); + ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); + if (ret < 0) { + return ret; + } + + reg.id = KVM_REG_S390_PFCOMPARE; + reg.addr = (__u64)&(env->pfault_compare); + ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); + if (ret < 0) { + return ret; + } + + reg.id = KVM_REG_S390_PFSELECT; + reg.addr = (__u64)&(env->pfault_select); + ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); + if (ret < 0) { + return ret; + } + } + if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS && cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) { @@ -282,6 +307,29 @@ int kvm_arch_get_registers(CPUState *cs) return r; } + if (cap_async_pf) { + reg.id = KVM_REG_S390_PFTOKEN; + reg.addr = (__u64)&(env->pfault_token); + r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); + if (r < 0) { + return r; + } + + reg.id = KVM_REG_S390_PFCOMPARE; + reg.addr = (__u64)&(env->pfault_compare); + r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); + if (r < 0) { + return r; + } + + reg.id = KVM_REG_S390_PFSELECT; + reg.addr = (__u64)&(env->pfault_select); + r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); + if (r < 0) { + return r; + } + } + return 0; } |