[PATCH v3 10/10] docs: kvm: riscv: document EBUSY in KVM_SET_ONE_REG

Daniel Henrique Barboza
2023-08-03T14:01:21Z

The EBUSY errno is being used for KVM_SET_ONE_REG as a way to tell
userspace that a given reg can't be changed after the vcpu started.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
---
Documentation/virt/kvm/api.rst | 2 ++
1 file changed, 2 insertions(+)

diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index c0ddd3035462..3249fb56cc69 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -2259,6 +2259,8 @@ Errors:
EINVAL invalid register ID, or no such register or used with VMs in
protected virtualization mode on s390
EPERM (arm64) register access not allowed before vcpu finalization
+ EBUSY (riscv) changing register value not allowed after the vcpu
+ has run at least once
====== ============================================================

(These error codes are indicative only: do not rely on a specific error