diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_nested.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_nested.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_nested.c b/arch/powerpc/kvm/book3s_hv_nested.c index 05f5220960c6..ef97f58d0d97 100644 --- a/arch/powerpc/kvm/book3s_hv_nested.c +++ b/arch/powerpc/kvm/book3s_hv_nested.c @@ -32,7 +32,7 @@ void kvmhv_save_hv_regs(struct kvm_vcpu *vcpu, struct hv_guest_state *hr) struct kvmppc_vcore *vc = vcpu->arch.vcore; hr->pcr = vc->pcr | PCR_MASK; - hr->dpdes = vc->dpdes; + hr->dpdes = vcpu->arch.doorbell_request; hr->hfscr = vcpu->arch.hfscr; hr->tb_offset = vc->tb_offset; hr->dawr0 = vcpu->arch.dawr0; @@ -105,7 +105,7 @@ static void save_hv_return_state(struct kvm_vcpu *vcpu, { struct kvmppc_vcore *vc = vcpu->arch.vcore; - hr->dpdes = vc->dpdes; + hr->dpdes = vcpu->arch.doorbell_request; hr->purr = vcpu->arch.purr; hr->spurr = vcpu->arch.spurr; hr->ic = vcpu->arch.ic; @@ -143,7 +143,7 @@ static void restore_hv_regs(struct kvm_vcpu *vcpu, const struct hv_guest_state * struct kvmppc_vcore *vc = vcpu->arch.vcore; vc->pcr = hr->pcr | PCR_MASK; - vc->dpdes = hr->dpdes; + vcpu->arch.doorbell_request = hr->dpdes; vcpu->arch.hfscr = hr->hfscr; vcpu->arch.dawr0 = hr->dawr0; vcpu->arch.dawrx0 = hr->dawrx0; @@ -170,7 +170,13 @@ void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu, { struct kvmppc_vcore *vc = vcpu->arch.vcore; - vc->dpdes = hr->dpdes; + /* + * This L2 vCPU might have received a doorbell while H_ENTER_NESTED was being handled. + * Make sure we preserve the doorbell if it was either: + * a) Sent after H_ENTER_NESTED was called on this vCPU (arch.doorbell_request would be 1) + * b) Doorbell was not handled and L2 exited for some other reason (hr->dpdes would be 1) + */ + vcpu->arch.doorbell_request = vcpu->arch.doorbell_request | hr->dpdes; vcpu->arch.hfscr = hr->hfscr; vcpu->arch.purr = hr->purr; vcpu->arch.spurr = hr->spurr; @@ -445,6 +451,8 @@ long kvmhv_nested_init(void) if (rc == H_SUCCESS) { unsigned long capabilities = 0; + if (cpu_has_feature(CPU_FTR_P11_PVR)) + capabilities |= H_GUEST_CAP_POWER11; if (cpu_has_feature(CPU_FTR_ARCH_31)) capabilities |= H_GUEST_CAP_POWER10; if (cpu_has_feature(CPU_FTR_ARCH_300)) |