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| author | Paul Mackerras <paulus@ozlabs.org> | 2019-02-22 05:52:30 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2019-02-22 05:52:30 +0300 |
| commit | 0a0c50f771f577b05f5a1ac9867d296d02a5e51c (patch) | |
| tree | a5ba65815e0c2563844e52947274c0bdf63a790b /arch/powerpc/kvm/book3s_hv.c | |
| parent | 716cb1160819721c39f807e103d9c307dbca2cf4 (diff) | |
| parent | c3c7470c75566a077c8dc71dcf8f1948b8ddfab4 (diff) | |
| download | linux-0a0c50f771f577b05f5a1ac9867d296d02a5e51c.tar.xz | |
Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next
This merges in the "ppc-kvm" topic branch of the powerpc tree to get a
series of commits that touch both general arch/powerpc code and KVM
code. These commits will be merged both via the KVM tree and the
powerpc tree.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index ba8db3881ef9..60458947b99e 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1217,6 +1217,22 @@ static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu, r = RESUME_GUEST; break; case BOOK3S_INTERRUPT_MACHINE_CHECK: + /* Print the MCE event to host console. */ + machine_check_print_event_info(&vcpu->arch.mce_evt, false, true); + + /* + * If the guest can do FWNMI, exit to userspace so it can + * deliver a FWNMI to the guest. + * Otherwise we synthesize a machine check for the guest + * so that it knows that the machine check occurred. + */ + if (!vcpu->kvm->arch.fwnmi_enabled) { + ulong flags = vcpu->arch.shregs.msr & 0x083c0000; + kvmppc_core_queue_machine_check(vcpu, flags); + r = RESUME_GUEST; + break; + } + /* Exit to guest with KVM_EXIT_NMI as exit reason */ run->exit_reason = KVM_EXIT_NMI; run->hw.hardware_exit_reason = vcpu->arch.trap; @@ -1229,8 +1245,6 @@ static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu, run->flags |= KVM_RUN_PPC_NMI_DISP_NOT_RECOV; r = RESUME_HOST; - /* Print the MCE event to host console. */ - machine_check_print_event_info(&vcpu->arch.mce_evt, false); break; case BOOK3S_INTERRUPT_PROGRAM: { @@ -1394,7 +1408,7 @@ static int kvmppc_handle_nested_exit(struct kvm_run *run, struct kvm_vcpu *vcpu) /* Pass the machine check to the L1 guest */ r = RESUME_HOST; /* Print the MCE event to host console. */ - machine_check_print_event_info(&vcpu->arch.mce_evt, false); + machine_check_print_event_info(&vcpu->arch.mce_evt, false, true); break; /* * We get these next two if the guest accesses a page which it thinks @@ -3457,6 +3471,7 @@ int kvmhv_p9_guest_entry(struct kvm_vcpu *vcpu, u64 time_limit, unsigned long host_dscr = mfspr(SPRN_DSCR); unsigned long host_tidr = mfspr(SPRN_TIDR); unsigned long host_iamr = mfspr(SPRN_IAMR); + unsigned long host_amr = mfspr(SPRN_AMR); s64 dec; u64 tb; int trap, save_pmu; @@ -3573,13 +3588,15 @@ int kvmhv_p9_guest_entry(struct kvm_vcpu *vcpu, u64 time_limit, mtspr(SPRN_PSPB, 0); mtspr(SPRN_WORT, 0); - mtspr(SPRN_AMR, 0); mtspr(SPRN_UAMOR, 0); mtspr(SPRN_DSCR, host_dscr); mtspr(SPRN_TIDR, host_tidr); mtspr(SPRN_IAMR, host_iamr); mtspr(SPRN_PSPB, 0); + if (host_amr != vcpu->arch.amr) + mtspr(SPRN_AMR, host_amr); + msr_check_and_set(MSR_FP | MSR_VEC | MSR_VSX); store_fp_state(&vcpu->arch.fp); #ifdef CONFIG_ALTIVEC |