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Message-ID: <20250930103130.197534-15-suzuki.poulose@arm.com>
Date: Tue, 30 Sep 2025 11:31:28 +0100
From: Suzuki K Poulose <suzuki.poulose@....com>
To: kvmarm@...ts.linux.dev
Cc: kvm@...r.kernel.org,
linux-kernel@...r.kernel.org,
will@...nel.org,
oliver.upton@...ux.dev,
maz@...nel.org,
alexandru.elisei@....com,
aneesh.kumar@...nel.org,
steven.price@....com,
tabba@...gle.com,
Suzuki K Poulose <suzuki.poulose@....com>
Subject: [PATCH kvmtool v4 13/15] arm64: psci: Implement MIGRATE_INFO_TYPE
From: Oliver Upton <oliver.upton@...ux.dev>
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@...ux.dev>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
arm64/psci.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arm64/psci.c b/arm64/psci.c
index 94e39d40..3deb672e 100644
--- a/arm64/psci.c
+++ b/arm64/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;
@@ -190,6 +191,10 @@ 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;
}
--
2.43.0
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