diff options
| -rw-r--r-- | Documentation/virtual/kvm/api.txt | 11 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/asm-offsets.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/kvm/powerpc.c | 14 | ||||
| -rw-r--r-- | include/uapi/linux/kvm.h | 1 |
5 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 68b66b538d2d..1531a3cd548f 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -4011,6 +4011,17 @@ vsmt_mode being returned when the KVM_CAP_PPC_SMT capability is subsequently queried for the VM. This capability is only supported by HV KVM, and can only be set before any VCPUs have been created. +7.12 KVM_CAP_PPC_FWNMI + +Architectures: ppc +Parameters: none + +With this capability a machine check exception in the guest address +space will cause KVM to exit the guest with NMI exit reason. This +enables QEMU to build error log and branch to guest kernel registered +machine check handling routine. Without this capability KVM will +branch to guests' 0x200 interrupt vector. + 8. Other capabilities. ---------------------- diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 683c3c82ce9c..05866391f406 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -287,6 +287,7 @@ struct kvm_arch { cpumask_t need_tlb_flush; cpumask_t cpu_in_guest; u8 radix; + u8 fwnmi_enabled; pgd_t *pgtable; u64 process_table; struct dentry *debugfs_dir; diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 293fbdf96e7d..ae8e89e0d083 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -485,6 +485,7 @@ int main(void) OFFSET(KVM_ENABLED_HCALLS, kvm, arch.enabled_hcalls); OFFSET(KVM_VRMA_SLB_V, kvm, arch.vrma_slb_v); OFFSET(KVM_RADIX, kvm, arch.radix); + OFFSET(KVM_FWNMI, kvm, arch.fwnmi_enabled); OFFSET(VCPU_DSISR, kvm_vcpu, arch.shregs.dsisr); OFFSET(VCPU_DAR, kvm_vcpu, arch.shregs.dar); OFFSET(VCPU_VPA, kvm_vcpu, arch.vpa.pinned_addr); diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 8208c2b95a93..ccaa7a407c15 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -624,6 +624,11 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) r = !!hv_enabled && !cpu_has_feature(CPU_FTR_ARCH_300); break; #endif +#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE + case KVM_CAP_PPC_FWNMI: + r = hv_enabled; + break; +#endif case KVM_CAP_PPC_HTM: r = cpu_has_feature(CPU_FTR_TM_COMP) && is_kvmppc_hv_enabled(kvm); @@ -1543,6 +1548,15 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, break; } #endif /* CONFIG_KVM_XICS */ +#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE + case KVM_CAP_PPC_FWNMI: + r = -EINVAL; + if (!is_kvmppc_hv_enabled(vcpu->kvm)) + break; + r = 0; + vcpu->kvm->arch.fwnmi_enabled = true; + break; +#endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */ default: r = -EINVAL; break; diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 577429a95ad8..89bc145b4051 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -895,6 +895,7 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_SPAPR_TCE_VFIO 142 #define KVM_CAP_X86_GUEST_MWAIT 143 #define KVM_CAP_ARM_USER_IRQ 144 +#define KVM_CAP_PPC_FWNMI 145 #ifdef KVM_CAP_IRQ_ROUTING |