From: Oliver Upton Date: Tue, 30 Sep 2025 23:36:20 +0000 (-0700) Subject: KVM: arm64: Document vCPU event ioctls as requiring init'ed vCPU X-Git-Tag: v6.18-rc2~13^2~1^2~24 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=cc4309324dc695f62d25d56c0b29805e9724170c;p=thirdparty%2Flinux.git KVM: arm64: Document vCPU event ioctls as requiring init'ed vCPU KVM rejects calls to KVM_{GET,SET}_VCPU_EVENTS for an uninitialized vCPU as of commit cc96679f3c03 ("KVM: arm64: Prevent access to vCPU events before init"). Update the corresponding API documentation. Signed-off-by: Oliver Upton Signed-off-by: Marc Zyngier --- diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index 6ae24c5ca559..4973c74db5c6 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -1229,6 +1229,9 @@ It is not possible to read back a pending external abort (injected via KVM_SET_VCPU_EVENTS or otherwise) because such an exception is always delivered directly to the virtual CPU). +Calling this ioctl on a vCPU that hasn't been initialized will return +-ENOEXEC. + :: struct kvm_vcpu_events { @@ -1309,6 +1312,8 @@ exceptions by manipulating individual registers using the KVM_SET_ONE_REG API. See KVM_GET_VCPU_EVENTS for the data structure. +Calling this ioctl on a vCPU that hasn't been initialized will return +-ENOEXEC. 4.33 KVM_GET_DEBUGREGS ----------------------