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From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev
Cc: kvm@vger.kernel.org, Marc Zyngier <maz@kernel.org>,
	James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Zenghui Yu <yuzenghui@huawei.com>, Will Deacon <will@kernel.org>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Salil Mehta <salil.mehta@huawei.com>,
	Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH kvmtool 19/21] aarch64: psci: Implement MIGRATE_INFO_TYPE
Date: Fri, 26 May 2023 22:17:10 +0000	[thread overview]
Message-ID: <20230526221712.317287-20-oliver.upton@linux.dev> (raw)
In-Reply-To: <20230526221712.317287-1-oliver.upton@linux.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@linux.dev>
---
 arm/aarch64/psci.c | 5 +++++
 1 file changed, 5 insertions(+)

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;
 	}
-- 
2.41.0.rc0.172.g3f132b7071-goog


  parent reply	other threads:[~2023-05-26 22:18 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-26 22:16 [PATCH kvmtool 00/21] arm64: Handle PSCI calls in userspace Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 01/21] update_headers: Use a list for arch-generic headers Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 02/21] update_headers: Add missing entries to list of headers to copy Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 03/21] Copy 64-bit alignment attrtibutes from Linux 6.4-rc1 Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 04/21] Update headers with " Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 05/21] Import arm-smccc.h from " Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 06/21] aarch64: Copy cputype.h " Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 07/21] arm: Stash kvm_vcpu_init for later use Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 08/21] arm: Add support for resetting a vCPU Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 09/21] arm: Use KVM_SET_MP_STATE ioctl to power off non-boot vCPUs Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 10/21] aarch64: Expose ARM64_CORE_REG() for general use Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 11/21] arm: Generalize execution state specific VM initialization Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 12/21] Add helpers to pause the VM from vCPU thread Oliver Upton
2023-06-09 10:59   ` Shaoqin Huang
2023-06-15  8:59     ` Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 13/21] aarch64: Add support for finding vCPU for given MPIDR Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 14/21] aarch64: Add skeleton implementation for PSCI Oliver Upton
2023-06-13 15:10   ` Joey Gouly
2023-05-26 22:17 ` [PATCH kvmtool 15/21] aarch64: psci: Implement CPU_SUSPEND Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 16/21] aarch64: psci: Implement CPU_OFF Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 17/21] aarch64: psci: Implement CPU_ON Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 18/21] aarch64: psci: Implement AFFINITY_INFO Oliver Upton
2023-05-26 22:17 ` Oliver Upton [this message]
2023-05-26 22:18 ` [PATCH kvmtool 20/21] aarch64: psci: Implement SYSTEM_{OFF,RESET} Oliver Upton
2023-05-26 22:19 ` [PATCH kvmtool 21/21] aarch64: smccc: Start sending PSCI to userspace Oliver Upton
2023-06-14 12:05 ` [PATCH kvmtool 00/21] arm64: Handle PSCI calls in userspace Joey Gouly
2023-06-14 16:05   ` Oliver Upton

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