Peter or Fabiano, this patch needs review. It's trivial.
- Steve
On 6/10/2025 11:39 AM, Steve Sistare wrote:
Update documentation to say that cpr-transfer supports vfio and iommufd.
Signed-off-by: Steve Sistare <steven.sist...@oracle.com>
---
docs/devel/migration/CPR.rst | 5 ++---
qapi/migration.json | 6 ++++--
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/docs/devel/migration/CPR.rst b/docs/devel/migration/CPR.rst
index 7897873..0a0fd4f 100644
--- a/docs/devel/migration/CPR.rst
+++ b/docs/devel/migration/CPR.rst
@@ -152,8 +152,7 @@ cpr-transfer mode
This mode allows the user to transfer a guest to a new QEMU instance
on the same host with minimal guest pause time, by preserving guest
RAM in place, albeit with new virtual addresses in new QEMU. Devices
-and their pinned memory pages will also be preserved in a future QEMU
-release.
+and their pinned memory pages are also preserved for VFIO and IOMMUFD.
The user starts new QEMU on the same host as old QEMU, with command-
line arguments to create the same machine, plus the ``-incoming``
@@ -322,6 +321,6 @@ Futures
cpr-transfer mode is based on a capability to transfer open file
descriptors from old to new QEMU. In the future, descriptors for
-vfio, iommufd, vhost, and char devices could be transferred,
+vhost, and char devices could be transferred,
preserving those devices and their kernel state without interruption,
even if they do not explicitly support live migration.
diff --git a/qapi/migration.json b/qapi/migration.json
index 4963f6c..e8a7d3b 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -620,8 +620,10 @@
#
# @cpr-transfer: This mode allows the user to transfer a guest to a
# new QEMU instance on the same host with minimal guest pause
-# time by preserving guest RAM in place. Devices and their pinned
-# pages will also be preserved in a future QEMU release.
+# time by preserving guest RAM in place.
+#
+# Devices and their pinned pages are also preserved for VFIO and
+# IOMMUFD. (since 10.1)
#
# The user starts new QEMU on the same host as old QEMU, with
# command-line arguments to create the same machine, plus the
