On 24.02.26 10:50, Alexandr Moshkov wrote:
In case of migration of QEMU from the new version (where the
inllight-migration parameter is present), to the old one (where it is
absent) there is no way to disable this feature on the backend during
runtime.
This commit slightly changes the semantics of the protocol feature
VHOST_USER_PROTOCOL_F_GET_VRING_BASE_INFLIGHT. Enabling this feature
adds a new parameter for GET_VRING_BASE, which allows to control the
drain in-flight requests on the backend.
Thus, QEMU will be able to turn this feature on GET_VRING_BASE off and
on anytime.
Signed-off-by: Alexandr Moshkov<[email protected]>
Let's split this commit, at least into two:
1. add additional vhost_dev_stop() parameter (most of this commit)
2. breaking changes for (not yet released) vhost-user protocol extension
--
Best regards,
Vladimir
