diff options
Diffstat (limited to 'arch/arm64/kvm/guest.c')
| -rw-r--r-- | arch/arm64/kvm/guest.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 56a0260ceb11..dd05be96d981 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -289,6 +289,52 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, return -EINVAL; } +int kvm_arm_vcpu_get_events(struct kvm_vcpu *vcpu, + struct kvm_vcpu_events *events) +{ + memset(events, 0, sizeof(*events)); + + events->exception.serror_pending = !!(vcpu->arch.hcr_el2 & HCR_VSE); + events->exception.serror_has_esr = cpus_have_const_cap(ARM64_HAS_RAS_EXTN); + + if (events->exception.serror_pending && events->exception.serror_has_esr) + events->exception.serror_esr = vcpu_get_vsesr(vcpu); + + return 0; +} + +int kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu, + struct kvm_vcpu_events *events) +{ + int i; + bool serror_pending = events->exception.serror_pending; + bool has_esr = events->exception.serror_has_esr; + + /* check whether the reserved field is zero */ + for (i = 0; i < ARRAY_SIZE(events->reserved); i++) + if (events->reserved[i]) + return -EINVAL; + + /* check whether the pad field is zero */ + for (i = 0; i < ARRAY_SIZE(events->exception.pad); i++) + if (events->exception.pad[i]) + return -EINVAL; + + if (serror_pending && has_esr) { + if (!cpus_have_const_cap(ARM64_HAS_RAS_EXTN)) + return -EINVAL; + + if (!((events->exception.serror_esr) & ~ESR_ELx_ISS_MASK)) + kvm_set_sei_esr(vcpu, events->exception.serror_esr); + else + return -EINVAL; + } else if (serror_pending) { + kvm_inject_vabt(vcpu); + } + + return 0; +} + int __attribute_const__ kvm_target_cpu(void) { unsigned long implementor = read_cpuid_implementor(); |