diff options
Diffstat (limited to 'arch/s390/kvm')
| -rw-r--r-- | arch/s390/kvm/guestdbg.c | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 6 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 113 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/priv.c | 6 | ||||
| -rw-r--r-- | arch/s390/kvm/sigp.c | 36 | ||||
| -rw-r--r-- | arch/s390/kvm/sthyi.c | 13 | ||||
| -rw-r--r-- | arch/s390/kvm/vsie.c | 16 |
8 files changed, 155 insertions, 39 deletions
diff --git a/arch/s390/kvm/guestdbg.c b/arch/s390/kvm/guestdbg.c index c2e0ddc1356e..bcbd86621d01 100644 --- a/arch/s390/kvm/guestdbg.c +++ b/arch/s390/kvm/guestdbg.c @@ -308,7 +308,7 @@ static inline int in_addr_range(u64 addr, u64 a, u64 b) return (addr >= a) && (addr <= b); else /* "overflowing" interval */ - return (addr <= a) && (addr >= b); + return (addr >= a) || (addr <= b); } #define end_of_range(bp_info) (bp_info->addr + bp_info->len - 1) diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index a619ddae610d..a832ad031cee 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -2479,6 +2479,7 @@ void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu, struct kvm_s390_mchk_info *mchk; union mci mci; __u64 cr14 = 0; /* upper bits are not used */ + int rc; mci.val = mcck_info->mcic; if (mci.sr) @@ -2496,12 +2497,13 @@ void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu, if (mci.ck) { /* Inject the floating machine check */ inti.type = KVM_S390_MCHK; - WARN_ON_ONCE(__inject_vm(vcpu->kvm, &inti)); + rc = __inject_vm(vcpu->kvm, &inti); } else { /* Inject the machine check to specified vcpu */ irq.type = KVM_S390_MCHK; - WARN_ON_ONCE(kvm_s390_inject_vcpu(vcpu, &irq)); + rc = kvm_s390_inject_vcpu(vcpu, &irq); } + WARN_ON_ONCE(rc); } int kvm_set_routing_entry(struct kvm *kvm, diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 9f23a9e81a91..40d0a1a97889 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -130,6 +130,12 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { NULL } }; +struct kvm_s390_tod_clock_ext { + __u8 epoch_idx; + __u64 tod; + __u8 reserved[7]; +} __packed; + /* allow nested virtualization in KVM (if enabled by user space) */ static int nested; module_param(nested, int, S_IRUGO); @@ -874,6 +880,26 @@ static int kvm_s390_vm_get_migration(struct kvm *kvm, return 0; } +static int kvm_s390_set_tod_ext(struct kvm *kvm, struct kvm_device_attr *attr) +{ + struct kvm_s390_vm_tod_clock gtod; + + if (copy_from_user(>od, (void __user *)attr->addr, sizeof(gtod))) + return -EFAULT; + + if (test_kvm_facility(kvm, 139)) + kvm_s390_set_tod_clock_ext(kvm, >od); + else if (gtod.epoch_idx == 0) + kvm_s390_set_tod_clock(kvm, gtod.tod); + else + return -EINVAL; + + VM_EVENT(kvm, 3, "SET: TOD extension: 0x%x, TOD base: 0x%llx", + gtod.epoch_idx, gtod.tod); + + return 0; +} + static int kvm_s390_set_tod_high(struct kvm *kvm, struct kvm_device_attr *attr) { u8 gtod_high; @@ -909,6 +935,9 @@ static int kvm_s390_set_tod(struct kvm *kvm, struct kvm_device_attr *attr) return -EINVAL; switch (attr->attr) { + case KVM_S390_VM_TOD_EXT: + ret = kvm_s390_set_tod_ext(kvm, attr); + break; case KVM_S390_VM_TOD_HIGH: ret = kvm_s390_set_tod_high(kvm, attr); break; @@ -922,6 +951,43 @@ static int kvm_s390_set_tod(struct kvm *kvm, struct kvm_device_attr *attr) return ret; } +static void kvm_s390_get_tod_clock_ext(struct kvm *kvm, + struct kvm_s390_vm_tod_clock *gtod) +{ + struct kvm_s390_tod_clock_ext htod; + + preempt_disable(); + + get_tod_clock_ext((char *)&htod); + + gtod->tod = htod.tod + kvm->arch.epoch; + gtod->epoch_idx = htod.epoch_idx + kvm->arch.epdx; + + if (gtod->tod < htod.tod) + gtod->epoch_idx += 1; + + preempt_enable(); +} + +static int kvm_s390_get_tod_ext(struct kvm *kvm, struct kvm_device_attr *attr) +{ + struct kvm_s390_vm_tod_clock gtod; + + memset(>od, 0, sizeof(gtod)); + + if (test_kvm_facility(kvm, 139)) + kvm_s390_get_tod_clock_ext(kvm, >od); + else + gtod.tod = kvm_s390_get_tod_clock_fast(kvm); + + if (copy_to_user((void __user *)attr->addr, >od, sizeof(gtod))) + return -EFAULT; + + VM_EVENT(kvm, 3, "QUERY: TOD extension: 0x%x, TOD base: 0x%llx", + gtod.epoch_idx, gtod.tod); + return 0; +} + static int kvm_s390_get_tod_high(struct kvm *kvm, struct kvm_device_attr *attr) { u8 gtod_high = 0; @@ -954,6 +1020,9 @@ static int kvm_s390_get_tod(struct kvm *kvm, struct kvm_device_attr *attr) return -EINVAL; switch (attr->attr) { + case KVM_S390_VM_TOD_EXT: + ret = kvm_s390_get_tod_ext(kvm, attr); + break; case KVM_S390_VM_TOD_HIGH: ret = kvm_s390_get_tod_high(kvm, attr); break; @@ -1505,7 +1574,7 @@ static int kvm_s390_get_cmma_bits(struct kvm *kvm, if (r < 0) pgstev = 0; /* save the value */ - res[i++] = (pgstev >> 24) & 0x3; + res[i++] = (pgstev >> 24) & 0x43; /* * if the next bit is too far away, stop. * if we reached the previous "next", find the next one @@ -1583,7 +1652,7 @@ static int kvm_s390_set_cmma_bits(struct kvm *kvm, pgstev = bits[i]; pgstev = pgstev << 24; - mask &= _PGSTE_GPS_USAGE_MASK; + mask &= _PGSTE_GPS_USAGE_MASK | _PGSTE_GPS_NODAT; set_pgste_bits(kvm->mm, hva, mask, pgstev); } srcu_read_unlock(&kvm->srcu, srcu_idx); @@ -1858,8 +1927,16 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) memcpy(kvm->arch.model.fac_list, kvm->arch.model.fac_mask, S390_ARCH_FAC_LIST_SIZE_BYTE); + /* we are always in czam mode - even on pre z14 machines */ + set_kvm_facility(kvm->arch.model.fac_mask, 138); + set_kvm_facility(kvm->arch.model.fac_list, 138); + /* we emulate STHYI in kvm */ set_kvm_facility(kvm->arch.model.fac_mask, 74); set_kvm_facility(kvm->arch.model.fac_list, 74); + if (MACHINE_HAS_TLB_GUEST) { + set_kvm_facility(kvm->arch.model.fac_mask, 147); + set_kvm_facility(kvm->arch.model.fac_list, 147); + } kvm->arch.model.cpuid = kvm_s390_get_initial_cpuid(); kvm->arch.model.ibc = sclp.ibc & 0x0fff; @@ -2369,6 +2446,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) vcpu->arch.sie_block->eca |= ECA_VX; vcpu->arch.sie_block->ecd |= ECD_HOSTREGMGMT; } + if (test_kvm_facility(vcpu->kvm, 139)) + vcpu->arch.sie_block->ecd |= ECD_MEF; + vcpu->arch.sie_block->sdnxo = ((unsigned long) &vcpu->run->s.regs.sdnx) | SDNXC; vcpu->arch.sie_block->riccbd = (unsigned long) &vcpu->run->s.regs.riccb; @@ -2860,6 +2940,35 @@ retry: return 0; } +void kvm_s390_set_tod_clock_ext(struct kvm *kvm, + const struct kvm_s390_vm_tod_clock *gtod) +{ + struct kvm_vcpu *vcpu; + struct kvm_s390_tod_clock_ext htod; + int i; + + mutex_lock(&kvm->lock); + preempt_disable(); + + get_tod_clock_ext((char *)&htod); + + kvm->arch.epoch = gtod->tod - htod.tod; + kvm->arch.epdx = gtod->epoch_idx - htod.epoch_idx; + + if (kvm->arch.epoch > gtod->tod) + kvm->arch.epdx -= 1; + + kvm_s390_vcpu_block_all(kvm); + kvm_for_each_vcpu(i, vcpu, kvm) { + vcpu->arch.sie_block->epoch = kvm->arch.epoch; + vcpu->arch.sie_block->epdx = kvm->arch.epdx; + } + + kvm_s390_vcpu_unblock_all(kvm); + preempt_enable(); + mutex_unlock(&kvm->lock); +} + void kvm_s390_set_tod_clock(struct kvm *kvm, u64 tod) { struct kvm_vcpu *vcpu; diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index 6fedc8bc7a37..9f8fdd7b2311 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -272,6 +272,8 @@ int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu); int handle_sthyi(struct kvm_vcpu *vcpu); /* implemented in kvm-s390.c */ +void kvm_s390_set_tod_clock_ext(struct kvm *kvm, + const struct kvm_s390_vm_tod_clock *gtod); void kvm_s390_set_tod_clock(struct kvm *kvm, u64 tod); long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable); int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 8a1dac793d6b..91dc4a87ad61 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -988,6 +988,8 @@ static inline int do_essa(struct kvm_vcpu *vcpu, const int orc) if (pgstev & _PGSTE_GPS_ZERO) res |= 1; } + if (pgstev & _PGSTE_GPS_NODAT) + res |= 0x20; vcpu->run->s.regs.gprs[r1] = res; /* * It is possible that all the normal 511 slots were full, in which case @@ -1027,7 +1029,9 @@ static int handle_essa(struct kvm_vcpu *vcpu) return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); /* Check for invalid operation request code */ orc = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28; - if (orc > ESSA_MAX) + /* ORCs 0-6 are always valid */ + if (orc > (test_kvm_facility(vcpu->kvm, 147) ? ESSA_SET_STABLE_NODAT + : ESSA_SET_STABLE_IF_RESIDENT)) return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); if (likely(!vcpu->kvm->arch.migration_state)) { diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c index 1a252f537081..9d592ef4104b 100644 --- a/arch/s390/kvm/sigp.c +++ b/arch/s390/kvm/sigp.c @@ -155,29 +155,26 @@ static int __sigp_stop_and_store_status(struct kvm_vcpu *vcpu, return rc; } -static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter) +static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter, + u64 *status_reg) { - int rc; unsigned int i; struct kvm_vcpu *v; + bool all_stopped = true; - switch (parameter & 0xff) { - case 0: - rc = SIGP_CC_NOT_OPERATIONAL; - break; - case 1: - case 2: - kvm_for_each_vcpu(i, v, vcpu->kvm) { - v->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID; - kvm_clear_async_pf_completion_queue(v); - } - - rc = SIGP_CC_ORDER_CODE_ACCEPTED; - break; - default: - rc = -EOPNOTSUPP; + kvm_for_each_vcpu(i, v, vcpu->kvm) { + if (v == vcpu) + continue; + if (!is_vcpu_stopped(v)) + all_stopped = false; } - return rc; + + *status_reg &= 0xffffffff00000000UL; + + /* Reject set arch order, with czam we're always in z/Arch mode. */ + *status_reg |= (all_stopped ? SIGP_STATUS_INVALID_PARAMETER : + SIGP_STATUS_INCORRECT_STATE); + return SIGP_CC_STATUS_STORED; } static int __sigp_set_prefix(struct kvm_vcpu *vcpu, struct kvm_vcpu *dst_vcpu, @@ -446,7 +443,8 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu) switch (order_code) { case SIGP_SET_ARCHITECTURE: vcpu->stat.instruction_sigp_arch++; - rc = __sigp_set_arch(vcpu, parameter); + rc = __sigp_set_arch(vcpu, parameter, + &vcpu->run->s.regs.gprs[r1]); break; default: rc = handle_sigp_dst(vcpu, order_code, cpu_addr, diff --git a/arch/s390/kvm/sthyi.c b/arch/s390/kvm/sthyi.c index 926b5244263e..395926b8c1ed 100644 --- a/arch/s390/kvm/sthyi.c +++ b/arch/s390/kvm/sthyi.c @@ -394,7 +394,7 @@ static int sthyi(u64 vaddr) "srl %[cc],28\n" : [cc] "=d" (cc) : [code] "d" (code), [addr] "a" (addr) - : "memory", "cc"); + : "3", "memory", "cc"); return cc; } @@ -425,7 +425,7 @@ int handle_sthyi(struct kvm_vcpu *vcpu) VCPU_EVENT(vcpu, 3, "STHYI: fc: %llu addr: 0x%016llx", code, addr); trace_kvm_s390_handle_sthyi(vcpu, code, addr); - if (reg1 == reg2 || reg1 & 1 || reg2 & 1 || addr & ~PAGE_MASK) + if (reg1 == reg2 || reg1 & 1 || reg2 & 1) return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); if (code & 0xffff) { @@ -433,13 +433,8 @@ int handle_sthyi(struct kvm_vcpu *vcpu) goto out; } - /* - * If the page has not yet been faulted in, we want to do that - * now and not after all the expensive calculations. - */ - r = write_guest(vcpu, addr, reg2, &cc, 1); - if (r) - return kvm_s390_inject_prog_cond(vcpu, r); + if (addr & ~PAGE_MASK) + return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); sctns = (void *)get_zeroed_page(GFP_KERNEL); if (!sctns) diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index 715c19c45d9a..fbe46dd0e55d 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -349,6 +349,9 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) scb_s->eca |= scb_o->eca & ECA_IB; if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_CEI)) scb_s->eca |= scb_o->eca & ECA_CEI; + /* Epoch Extension */ + if (test_kvm_facility(vcpu->kvm, 139)) + scb_s->ecd |= scb_o->ecd & ECD_MEF; prepare_ibc(vcpu, vsie_page); rc = shadow_crycb(vcpu, vsie_page); @@ -806,8 +809,6 @@ static int do_vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) { struct kvm_s390_sie_block *scb_s = &vsie_page->scb_s; struct kvm_s390_sie_block *scb_o = vsie_page->scb_o; - struct mcck_volatile_info *mcck_info; - struct sie_page *sie_page; int rc; handle_last_fault(vcpu, vsie_page); @@ -831,9 +832,7 @@ static int do_vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) if (rc == -EINTR) { VCPU_EVENT(vcpu, 3, "%s", "machine check"); - sie_page = container_of(scb_s, struct sie_page, sie_block); - mcck_info = &sie_page->mcck_info; - kvm_s390_reinject_machine_check(vcpu, mcck_info); + kvm_s390_reinject_machine_check(vcpu, &vsie_page->mcck_info); return 0; } @@ -919,6 +918,13 @@ static void register_shadow_scb(struct kvm_vcpu *vcpu, */ preempt_disable(); scb_s->epoch += vcpu->kvm->arch.epoch; + + if (scb_s->ecd & ECD_MEF) { + scb_s->epdx += vcpu->kvm->arch.epdx; + if (scb_s->epoch < vcpu->kvm->arch.epoch) + scb_s->epdx += 1; + } + preempt_enable(); } |