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-rw-r--r--arch/s390/include/asm/kvm_host.h5
-rw-r--r--arch/s390/kvm/interrupt.c6
-rw-r--r--arch/s390/kvm/kvm-s390.c92
3 files changed, 66 insertions, 37 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 11ecc4071a29..1726224e7772 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -122,6 +122,11 @@ struct mcck_volatile_info {
__u32 reserved;
};
+#define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
+ CR0_MEASUREMENT_ALERT_SUBMASK)
+#define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
+ CR14_EXTERNAL_DAMAGE_SUBMASK)
+
#define CPUSTAT_STOPPED 0x80000000
#define CPUSTAT_WAIT 0x10000000
#define CPUSTAT_ECALL_PEND 0x08000000
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 165dea4c7f19..c06c89d370a7 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -2190,7 +2190,7 @@ static int flic_ais_mode_get_all(struct kvm *kvm, struct kvm_device_attr *attr)
return -EINVAL;
if (!test_kvm_facility(kvm, 72))
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
mutex_lock(&fi->ais_lock);
ais.simm = fi->simm;
@@ -2499,7 +2499,7 @@ static int modify_ais_mode(struct kvm *kvm, struct kvm_device_attr *attr)
int ret = 0;
if (!test_kvm_facility(kvm, 72))
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
if (copy_from_user(&req, (void __user *)attr->addr, sizeof(req)))
return -EFAULT;
@@ -2579,7 +2579,7 @@ static int flic_ais_mode_set_all(struct kvm *kvm, struct kvm_device_attr *attr)
struct kvm_s390_ais_all ais;
if (!test_kvm_facility(kvm, 72))
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
if (copy_from_user(&ais, (void __user *)attr->addr, sizeof(ais)))
return -EFAULT;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 8646c99217f2..d7ff30e45589 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -529,6 +529,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_S390_CMMA_MIGRATION:
case KVM_CAP_S390_AIS:
case KVM_CAP_S390_AIS_MIGRATION:
+ case KVM_CAP_S390_VCPU_RESETS:
r = 1;
break;
case KVM_CAP_S390_HPAGE_1M:
@@ -2808,35 +2809,6 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
}
-static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu)
-{
- /* this equals initial cpu reset in pop, but we don't switch to ESA */
- vcpu->arch.sie_block->gpsw.mask = 0UL;
- vcpu->arch.sie_block->gpsw.addr = 0UL;
- kvm_s390_set_prefix(vcpu, 0);
- kvm_s390_set_cpu_timer(vcpu, 0);
- vcpu->arch.sie_block->ckc = 0UL;
- vcpu->arch.sie_block->todpr = 0;
- memset(vcpu->arch.sie_block->gcr, 0, 16 * sizeof(__u64));
- vcpu->arch.sie_block->gcr[0] = CR0_UNUSED_56 |
- CR0_INTERRUPT_KEY_SUBMASK |
- CR0_MEASUREMENT_ALERT_SUBMASK;
- vcpu->arch.sie_block->gcr[14] = CR14_UNUSED_32 |
- CR14_UNUSED_33 |
- CR14_EXTERNAL_DAMAGE_SUBMASK;
- /* make sure the new fpc will be lazily loaded */
- save_fpu_regs();
- current->thread.fpu.fpc = 0;
- vcpu->arch.sie_block->gbea = 1;
- vcpu->arch.sie_block->pp = 0;
- vcpu->arch.sie_block->fpf &= ~FPF_BPBC;
- vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID;
- kvm_clear_async_pf_completion_queue(vcpu);
- if (!kvm_s390_user_cpu_state_ctrl(vcpu->kvm))
- kvm_s390_vcpu_stop(vcpu);
- kvm_s390_clear_local_irqs(vcpu);
-}
-
void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
{
mutex_lock(&vcpu->kvm->lock);
@@ -3279,10 +3251,53 @@ static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu,
return r;
}
-static int kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu)
+static void kvm_arch_vcpu_ioctl_normal_reset(struct kvm_vcpu *vcpu)
{
- kvm_s390_vcpu_initial_reset(vcpu);
- return 0;
+ vcpu->arch.sie_block->gpsw.mask &= ~PSW_MASK_RI;
+ vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID;
+ memset(vcpu->run->s.regs.riccb, 0, sizeof(vcpu->run->s.regs.riccb));
+
+ kvm_clear_async_pf_completion_queue(vcpu);
+ if (!kvm_s390_user_cpu_state_ctrl(vcpu->kvm))
+ kvm_s390_vcpu_stop(vcpu);
+ kvm_s390_clear_local_irqs(vcpu);
+}
+
+static void kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu)
+{
+ /* Initial reset is a superset of the normal reset */
+ kvm_arch_vcpu_ioctl_normal_reset(vcpu);
+
+ /* this equals initial cpu reset in pop, but we don't switch to ESA */
+ vcpu->arch.sie_block->gpsw.mask = 0;
+ vcpu->arch.sie_block->gpsw.addr = 0;
+ kvm_s390_set_prefix(vcpu, 0);
+ kvm_s390_set_cpu_timer(vcpu, 0);
+ vcpu->arch.sie_block->ckc = 0;
+ vcpu->arch.sie_block->todpr = 0;
+ memset(vcpu->arch.sie_block->gcr, 0, sizeof(vcpu->arch.sie_block->gcr));
+ vcpu->arch.sie_block->gcr[0] = CR0_INITIAL_MASK;
+ vcpu->arch.sie_block->gcr[14] = CR14_INITIAL_MASK;
+ vcpu->run->s.regs.fpc = 0;
+ vcpu->arch.sie_block->gbea = 1;
+ vcpu->arch.sie_block->pp = 0;
+ vcpu->arch.sie_block->fpf &= ~FPF_BPBC;
+}
+
+static void kvm_arch_vcpu_ioctl_clear_reset(struct kvm_vcpu *vcpu)
+{
+ struct kvm_sync_regs *regs = &vcpu->run->s.regs;
+
+ /* Clear reset is a superset of the initial reset */
+ kvm_arch_vcpu_ioctl_initial_reset(vcpu);
+
+ memset(&regs->gprs, 0, sizeof(regs->gprs));
+ memset(&regs->vrs, 0, sizeof(regs->vrs));
+ memset(&regs->acrs, 0, sizeof(regs->acrs));
+ memset(&regs->gscb, 0, sizeof(regs->gscb));
+
+ regs->etoken = 0;
+ regs->etoken_extension = 0;
}
int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
@@ -4343,7 +4358,7 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
switch (ioctl) {
case KVM_S390_STORE_STATUS:
idx = srcu_read_lock(&vcpu->kvm->srcu);
- r = kvm_s390_vcpu_store_status(vcpu, arg);
+ r = kvm_s390_store_status_unloaded(vcpu, arg);
srcu_read_unlock(&vcpu->kvm->srcu, idx);
break;
case KVM_S390_SET_INITIAL_PSW: {
@@ -4355,8 +4370,17 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
r = kvm_arch_vcpu_ioctl_set_initial_psw(vcpu, psw);
break;
}
+ case KVM_S390_CLEAR_RESET:
+ r = 0;
+ kvm_arch_vcpu_ioctl_clear_reset(vcpu);
+ break;
case KVM_S390_INITIAL_RESET:
- r = kvm_arch_vcpu_ioctl_initial_reset(vcpu);
+ r = 0;
+ kvm_arch_vcpu_ioctl_initial_reset(vcpu);
+ break;
+ case KVM_S390_NORMAL_RESET:
+ r = 0;
+ kvm_arch_vcpu_ioctl_normal_reset(vcpu);
break;
case KVM_SET_ONE_REG:
case KVM_GET_ONE_REG: {
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