From: Stefan Hajnoczi <stefanha@redhat.com>
To: Hanna Czenczek <hreitz@redhat.com>
Cc: qemu-devel@nongnu.org, virtio-fs@redhat.com,
"Michael S . Tsirkin" <mst@redhat.com>,
"Eugenio Pérez" <eperezma@redhat.com>,
"German Maglione" <gmaglione@redhat.com>
Subject: Re: [PATCH v3 4/5] vhost: Add high-level state save/load functions
Date: Mon, 25 Sep 2023 16:23:53 -0400 [thread overview]
Message-ID: <20230925202353.GE323580@fedora> (raw)
In-Reply-To: <20230915102531.55894-5-hreitz@redhat.com>
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On Fri, Sep 15, 2023 at 12:25:29PM +0200, Hanna Czenczek wrote:
> vhost_save_backend_state() and vhost_load_backend_state() can be used by
> vhost front-ends to easily save and load the back-end's state to/from
> the migration stream.
>
> Because we do not know the full state size ahead of time,
> vhost_save_backend_state() simply reads the data in 1 MB chunks, and
> writes each chunk consecutively into the migration stream, prefixed by
> its length. EOF is indicated by a 0-length chunk.
>
> Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
> ---
> include/hw/virtio/vhost.h | 35 +++++++
> hw/virtio/vhost.c | 204 ++++++++++++++++++++++++++++++++++++++
> 2 files changed, 239 insertions(+)
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
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next prev parent reply other threads:[~2023-09-25 20:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-15 10:25 [PATCH v3 0/5] vhost-user: Back-end state migration Hanna Czenczek
2023-09-15 10:25 ` [PATCH v3 1/5] vhost-user.rst: Migrating back-end-internal state Hanna Czenczek
2023-09-25 19:04 ` Stefan Hajnoczi
2023-09-15 10:25 ` [PATCH v3 2/5] vhost-user.rst: Clarify enabling/disabling vrings Hanna Czenczek
2023-09-25 19:15 ` Stefan Hajnoczi
2023-09-26 13:54 ` Hanna Czenczek
2023-09-26 19:30 ` Stefan Hajnoczi
2023-09-15 10:25 ` [PATCH v3 3/5] vhost-user: Interface for migration state transfer Hanna Czenczek
2023-09-25 20:18 ` Stefan Hajnoczi
2023-09-15 10:25 ` [PATCH v3 4/5] vhost: Add high-level state save/load functions Hanna Czenczek
2023-09-25 20:23 ` Stefan Hajnoczi [this message]
2023-09-15 10:25 ` [PATCH v3 5/5] vhost-user-fs: Implement internal migration Hanna Czenczek
2023-09-25 20:26 ` Stefan Hajnoczi
2023-09-25 20:48 ` [PATCH v3 0/5] vhost-user: Back-end state migration Stefan Hajnoczi
2023-09-26 13:32 ` [Virtio-fs] " Hanna Czenczek
2023-09-26 19:20 ` Stefan Hajnoczi
2023-09-26 20:10 ` Stefan Hajnoczi
2023-09-27 8:32 ` Hanna Czenczek
2023-09-27 20:19 ` Stefan Hajnoczi
2023-09-27 8:13 ` Hanna Czenczek
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