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| author | Steve Sistare <steven.sistare@oracle.com> | 2025-07-02 14:58:58 -0700 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-07-03 13:42:28 +0200 |
| commit | 7437caad2052d920452ff7b9b7bc84f5e8e55c90 (patch) | |
| tree | 2a2a4cecf3f376d19a1994c7145234eb527382a3 | |
| parent | 99cedd5d552130b9b27743c40ca9012e1f4f0371 (diff) | |
| download | qemu-7437caad2052d920452ff7b9b7bc84f5e8e55c90.zip qemu-7437caad2052d920452ff7b9b7bc84f5e8e55c90.tar.gz qemu-7437caad2052d920452ff7b9b7bc84f5e8e55c90.tar.bz2 | |
vfio: doc changes for cpr
Update documentation to say that cpr-transfer supports vfio and iommufd.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/qemu-devel/1751493538-202042-22-git-send-email-steven.sistare@oracle.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
| -rw-r--r-- | docs/devel/migration/CPR.rst | 5 | ||||
| -rw-r--r-- | 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 |