From: Gavin Shan <gshan@redhat.com>
To: kvmarm@lists.cs.columbia.edu
Cc: linux-kernel@vger.kernel.org, maz@kernel.org, will@kernel.org,
pbonzini@redhat.com, james.morse@arm.com, mark.rutland@arm.com,
Jonathan.Cameron@huawei.com, shan.gavin@gmail.com
Subject: [PATCH v3 11/21] KVM: arm64: Support SDEI_PE_{MASK, UNMASK} hypercall
Date: Fri, 7 May 2021 16:31:14 +0800 [thread overview]
Message-ID: <20210507083124.43347-12-gshan@redhat.com> (raw)
In-Reply-To: <20210507083124.43347-1-gshan@redhat.com>
This supports SDEI_PE_{MASK, UNMASK} hypercall. They are used by
the guest to stop the specific vCPU from receiving SDEI events.
Signed-off-by: Gavin Shan <gshan@redhat.com>
---
arch/arm64/kvm/sdei.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/arch/arm64/kvm/sdei.c b/arch/arm64/kvm/sdei.c
index 458695c2394f..3fb33258b494 100644
--- a/arch/arm64/kvm/sdei.c
+++ b/arch/arm64/kvm/sdei.c
@@ -551,6 +551,37 @@ static unsigned long kvm_sdei_hypercall_route(struct kvm_vcpu *vcpu)
return ret;
}
+static unsigned long kvm_sdei_hypercall_mask(struct kvm_vcpu *vcpu,
+ bool mask)
+{
+ struct kvm *kvm = vcpu->kvm;
+ struct kvm_sdei_kvm *ksdei = kvm->arch.sdei;
+ struct kvm_sdei_vcpu *vsdei = vcpu->arch.sdei;
+ unsigned long ret = SDEI_SUCCESS;
+
+ /* Sanity check */
+ if (!(ksdei && vsdei)) {
+ ret = SDEI_NOT_SUPPORTED;
+ goto out;
+ }
+
+ spin_lock(&vsdei->lock);
+
+ /* Check the state */
+ if (mask == vsdei->state.masked) {
+ ret = SDEI_DENIED;
+ goto unlock;
+ }
+
+ /* Update the state */
+ vsdei->state.masked = mask ? 1 : 0;
+
+unlock:
+ spin_unlock(&vsdei->lock);
+out:
+ return ret;
+}
+
int kvm_sdei_hypercall(struct kvm_vcpu *vcpu)
{
u32 func = smccc_get_function(vcpu);
@@ -588,7 +619,11 @@ int kvm_sdei_hypercall(struct kvm_vcpu *vcpu)
ret = kvm_sdei_hypercall_route(vcpu);
break;
case SDEI_1_0_FN_SDEI_PE_MASK:
+ ret = kvm_sdei_hypercall_mask(vcpu, true);
+ break;
case SDEI_1_0_FN_SDEI_PE_UNMASK:
+ ret = kvm_sdei_hypercall_mask(vcpu, false);
+ break;
case SDEI_1_0_FN_SDEI_INTERRUPT_BIND:
case SDEI_1_0_FN_SDEI_INTERRUPT_RELEASE:
case SDEI_1_0_FN_SDEI_PRIVATE_RESET:
--
2.23.0
next prev parent reply other threads:[~2021-05-07 6:32 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-07 8:31 [PATCH v3 00/21] Support SDEI Virtualization Gavin Shan
2021-05-07 8:31 ` [PATCH v3 01/21] KVM: arm64: Introduce template for inline functions Gavin Shan
2021-05-07 8:31 ` [PATCH v3 02/21] KVM: arm64: Add SDEI virtualization infrastructure Gavin Shan
2021-05-07 8:31 ` [PATCH v3 03/21] KVM: arm64: Support SDEI_VERSION hypercall Gavin Shan
2021-05-07 8:31 ` [PATCH v3 04/21] KVM: arm64: Support SDEI_EVENT_REGISTER hypercall Gavin Shan
2021-05-07 8:31 ` [PATCH v3 05/21] KVM: arm64: Support SDEI_EVENT_{ENABLE, DISABLE} hypercall Gavin Shan
2021-05-07 8:31 ` [PATCH v3 06/21] KVM: arm64: Support SDEI_EVENT_CONTEXT hypercall Gavin Shan
2021-05-07 8:31 ` [PATCH v3 07/21] KVM: arm64: Support SDEI_EVENT_UNREGISTER hypercall Gavin Shan
2021-05-07 8:31 ` [PATCH v3 08/21] KVM: arm64: Support SDEI_EVENT_STATUS hypercall Gavin Shan
2021-05-07 8:31 ` [PATCH v3 09/21] KVM: arm64: Support SDEI_EVENT_GET_INFO hypercall Gavin Shan
2021-05-07 8:31 ` [PATCH v3 10/21] KVM: arm64: Support SDEI_EVENT_ROUTING_SET hypercall Gavin Shan
2021-05-07 8:31 ` Gavin Shan [this message]
2021-05-07 8:31 ` [PATCH v3 12/21] KVM: arm64: Support SDEI_{PRIVATE, SHARED}_RESET hypercall Gavin Shan
2021-05-07 8:31 ` [PATCH v3 13/21] KVM: arm64: Impment SDEI event delivery Gavin Shan
2021-05-07 8:31 ` [PATCH v3 14/21] KVM: arm64: Support SDEI_EVENT_{COMPLETE, COMPLETE_AND_RESUME} hypercall Gavin Shan
2021-05-07 8:31 ` [PATCH v3 15/21] KVM: arm64: Support SDEI event notifier Gavin Shan
2021-05-07 8:31 ` [PATCH v3 16/21] KVM: arm64: Support SDEI ioctl commands on VM Gavin Shan
2021-05-07 8:31 ` [PATCH v3 17/21] KVM: arm64: Support SDEI ioctl commands on vCPU Gavin Shan
2021-05-07 8:31 ` [PATCH v3 18/21] KVM: arm64: Support SDEI event injection Gavin Shan
2021-05-07 8:31 ` [PATCH v3 19/21] KVM: arm64: Support SDEI event cancellation Gavin Shan
2021-05-07 8:31 ` [PATCH v3 20/21] KVM: arm64: Export SDEI capability Gavin Shan
2021-05-07 8:31 ` [PATCH v3 21/21] KVM: selftests: Add SDEI test case Gavin Shan
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