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From: Gavin Shan <gshan@redhat.com>
To: kvmarm@lists.cs.columbia.edu
Cc: maz@kernel.org, shan.gavin@gmail.com, pbonzini@redhat.com
Subject: [PATCH 11/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_EVENT_ROUTING_SET hypercall
Date: Mon, 17 Aug 2020 20:05:24 +1000	[thread overview]
Message-ID: <20200817100531.83045-12-gshan@redhat.com> (raw)
In-Reply-To: <20200817100531.83045-1-gshan@redhat.com>

This supports SDEI_1_0_FN_SDEI_EVENT_ROUTING_SET hypercall by adding
kvm_sdei_hypercall_route(). On success, the specified routing mode
and affinity is set. Otherwise, errno is returned. The route mode
or affinity is updated to the KVM SDEI event.

Signed-off-by: Gavin Shan <gshan@redhat.com>
---
 arch/arm64/kvm/sdei.c | 74 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/arch/arm64/kvm/sdei.c b/arch/arm64/kvm/sdei.c
index 529505c4f0cf..1e7291acea0d 100644
--- a/arch/arm64/kvm/sdei.c
+++ b/arch/arm64/kvm/sdei.c
@@ -585,6 +585,78 @@ static unsigned long kvm_sdei_hypercall_info(struct kvm_vcpu *vcpu)
 	return ret;
 }
 
+static unsigned long kvm_sdei_hypercall_route(struct kvm_vcpu *vcpu)
+{
+	struct kvm *kvm = vcpu->kvm;
+	struct kvm_sdei_event *event = NULL;
+	struct kvm_sdei_kvm_event *kevent = NULL;
+	unsigned long event_num = smccc_get_arg1(vcpu);
+	unsigned long route_mode = smccc_get_arg2(vcpu);
+	unsigned long route_affinity = smccc_get_arg3(vcpu);
+	unsigned long event_type;
+	int index = 0;
+	unsigned long ret = SDEI_SUCCESS;
+
+	/* Validate the parameters */
+	if (!kvm_sdei_num_is_valid(event_num)) {
+		ret = SDEI_INVALID_PARAMETERS;
+		goto out;
+	}
+
+	if (!(kvm_sdei_data && kvm_sdei_data->supported) &&
+	    kvm_sdei_num_is_virt(event_num)) {
+		ret = SDEI_INVALID_PARAMETERS;
+		goto out;
+	}
+
+	if (!(route_mode == SDEI_EVENT_REGISTER_RM_ANY ||
+	      route_mode == SDEI_EVENT_REGISTER_RM_PE)) {
+		ret = SDEI_INVALID_PARAMETERS;
+		goto out;
+	}
+
+	/* Find the event */
+	spin_lock(&kvm_sdei_lock);
+	event = kvm_sdei_find_event(kvm, event_num, &kevent, NULL, NULL);
+	if (!kevent) {
+		ret = SDEI_INVALID_PARAMETERS;
+		goto unlock;
+	}
+
+	/* Sanity check */
+	spin_lock(&event->lock);
+	event_type = event->priv ? event->priv->type : event->event->type;
+	index = (event_type == SDEI_EVENT_TYPE_PRIVATE) ? vcpu->vcpu_idx : 0;
+	if (event_type != SDEI_EVENT_TYPE_SHARED) {
+		ret = SDEI_INVALID_PARAMETERS;
+		goto unlock_event;
+	}
+
+	if (!test_bit(index, kevent->registered) ||
+	    test_bit(index, kevent->enabled)     ||
+	    kevent->users) {
+		ret = SDEI_DENIED;
+		goto unlock_event;
+	}
+
+	if (route_mode == kevent->route_mode &&
+	    route_affinity == kevent->route_affinity) {
+		ret = SDEI_DENIED;
+		goto unlock_event;
+	}
+
+	/* Update status */
+	kevent->route_mode = route_mode;
+	kevent->route_affinity = route_affinity;
+
+unlock_event:
+	spin_unlock(&event->lock);
+unlock:
+	spin_unlock(&kvm_sdei_lock);
+out:
+	return ret;
+}
+
 static unsigned long kvm_sdei_reset(struct kvm *kvm, unsigned int types)
 {
 	struct kvm_sdei_event *e, *event = NULL;
@@ -680,6 +752,8 @@ int kvm_sdei_hypercall(struct kvm_vcpu *vcpu)
 		ret = kvm_sdei_hypercall_info(vcpu);
 		break;
 	case SDEI_1_0_FN_SDEI_EVENT_ROUTING_SET:
+		ret = kvm_sdei_hypercall_route(vcpu);
+		break;
 	case SDEI_1_0_FN_SDEI_PE_MASK:
 	case SDEI_1_0_FN_SDEI_PE_UNMASK:
 	case SDEI_1_0_FN_SDEI_INTERRUPT_BIND:
-- 
2.23.0

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  parent reply	other threads:[~2020-08-17 10:06 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-17 10:05 [PATCH 00/18] Support SDEI Virtualization Gavin Shan
2020-08-17 10:05 ` [PATCH 01/18] drivers/firmware/sdei: Retrieve event signaled property on registration Gavin Shan
2020-08-17 10:05 ` [PATCH 02/18] drivers/firmware/sdei: Add sdei_event_get_info() Gavin Shan
2020-08-17 10:05 ` [PATCH 03/18] arm/smccc: Introduce template for inline functions Gavin Shan
2020-08-17 10:05 ` [PATCH 04/18] arm64/kvm: Add SDEI virtualization infrastructure Gavin Shan
2020-08-17 10:05 ` [PATCH 05/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_VERSION hypercall Gavin Shan
2020-08-17 10:05 ` [PATCH 06/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_EVENT_REGISTER Gavin Shan
2020-08-17 10:05 ` [PATCH 07/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_EVENT_{ENABLE, DISABLE} hypercall Gavin Shan
2020-08-17 10:05 ` [PATCH 08/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_EVENT_UNREGISTER hypercall Gavin Shan
2020-08-17 10:05 ` [PATCH 09/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_EVENT_STATUS hypercall Gavin Shan
2020-08-17 10:05 ` [PATCH 10/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_EVENT_GET_INFO hypercall Gavin Shan
2020-08-17 10:05 ` Gavin Shan [this message]
2020-08-17 10:05 ` [PATCH 12/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_PE_{MASK, UNMASK} hypercall Gavin Shan
2020-08-17 10:05 ` [PATCH 13/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_{PRIVATE, SHARED}_RESET hypercall Gavin Shan
2020-08-17 10:05 ` [PATCH 14/18] arm64/kvm: Implement event handler Gavin Shan
2020-08-17 10:05 ` [PATCH 15/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_EVENT_{COMPLETE, COMPLETE_AND_RESUME} hypercall Gavin Shan
2020-08-17 10:05 ` [PATCH 16/18] arm64/kvm: Support SDEI_1_0_FN_SDEI_EVENT_CONTEXT hypercall Gavin Shan
2020-08-17 10:05 ` [PATCH 17/18] arm64/kvm: Expose SDEI capability Gavin Shan
2020-08-17 10:05 ` [PATCH 18/18] kvm/selftests: Add SDEI test case Gavin Shan
2020-08-17 11:01 ` [PATCH 00/18] Support SDEI Virtualization Gavin Shan

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