diff mbox series

[kvmtool,19/21] aarch64: psci: Implement MIGRATE_INFO_TYPE

Message ID 20230526221712.317287-20-oliver.upton@linux.dev (mailing list archive)
State New, archived
Headers show
Series arm64: Handle PSCI calls in userspace | expand

Commit Message

Oliver Upton May 26, 2023, 10:17 p.m. UTC 
Let the guest know that our PSCI implementation is entirely oblivious to
the existence of a Trusted OS, and thus shouldn't care about it.

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
 arm/aarch64/psci.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/arm/aarch64/psci.c b/arm/aarch64/psci.c
index e32c47e6a2c9..c33e63bdc3ef 100644
--- a/arm/aarch64/psci.c
+++ b/arm/aarch64/psci.c
@@ -32,6 +32,7 @@  static void psci_features(struct kvm_cpu *vcpu, struct arm_smccc_res *res)
 	case PSCI_0_2_FN64_CPU_ON:
 	case PSCI_0_2_FN_AFFINITY_INFO:
 	case PSCI_0_2_FN64_AFFINITY_INFO:
+	case PSCI_0_2_FN_MIGRATE_INFO_TYPE:
 	case ARM_SMCCC_VERSION_FUNC_ID:
 		res->a0 = PSCI_RET_SUCCESS;
 		break;
@@ -189,6 +190,10 @@  void handle_psci(struct kvm_cpu *vcpu, struct arm_smccc_res *res)
 	case PSCI_0_2_FN64_AFFINITY_INFO:
 		affinity_info(vcpu, res);
 		break;
+	case PSCI_0_2_FN_MIGRATE_INFO_TYPE:
+		/* Trusted OS not present */
+		res->a0 = PSCI_0_2_TOS_MP;
+		break;
 	default:
 		res->a0 = PSCI_RET_NOT_SUPPORTED;
 	}