The SDEI functionality is ready to be exported so far. This adds
new capability (KVM_CAP_ARM_SDEI) and exports it.
Signed-off-by: Gavin Shan <gshan@xxxxxxxxxx>
---
Documentation/virt/kvm/api.rst | 10 ++++++++++
arch/arm64/kvm/arm.c | 3 +++
include/uapi/linux/kvm.h | 1 +
3 files changed, 14 insertions(+)
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index 9f3172376ec3..06cf27f37b4d 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -7575,3 +7575,13 @@ The argument to KVM_ENABLE_CAP is also a bitmask, and must be a subset
of the result of KVM_CHECK_EXTENSION. KVM will forward to userspace
the hypercalls whose corresponding bit is in the argument, and return
ENOSYS for the others.
+
+8.35 KVM_CAP_ARM_SDEI
+---------------------
+
+:Capability: KVM_CAP_ARM_SDEI
+:Architectures: arm64
+
+This capability indicates that the SDEI virtual service is supported
+in the host. A VMM can check whether the service is available to enable
+it.
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 3f532e1c4a95..ae3b53dfe88f 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -282,6 +282,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_ARM_PTRAUTH_GENERIC:
r = system_has_full_ptr_auth();
break;
+ case KVM_CAP_ARM_SDEI:
+ r = 1;
+ break;
default:
r = 0;
}
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 2d11c909ec42..5772385639b8 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -1135,6 +1135,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_XSAVE2 208
#define KVM_CAP_SYS_ATTRIBUTES 209
#define KVM_CAP_PPC_AIL_MODE_3 210
+#define KVM_CAP_ARM_SDEI 211
#ifdef KVM_CAP_IRQ_ROUTING
--
2.23.0
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