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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: c53oi119zoSxeHxd0BRoAXg/F7K5Yp/mKO9MYs1qwjunnprn3erxxu9m/abfJcTn2e7lE5uyVcq9mkbgVnfAarRWsfdmxjXI5BhyXOgch5OpRXFLHblFjD4/y915l9qIxk5wuDlqt8E4GlSktIm6Qt36Ua2kc/1+2+UmjFV11V4slRhSM9qP6v+ZS1Rla43wf874FKNYnyam9uDu7GDkK4xDW7S0tJfaquWhYbFTQzA2MzYumzY7H6PuQLLSHVvOS3QbKYgjsX/lu6MmqFAbT8L1lmkJyzGoM2u/mD5RVLPl//3HNqIHBeuHELVeN6Ngcdm8cHIscbG/DkKZgH/8VQq+C3AFN3SZlTBgk5Bogtkcvjd9KMZpnWgfslqgjSUdwLyQqTedzWdKZqjom6zyZ1LHFHMmXZyIbHmlItg08NDoA4T4CzI27uT1Wd/ykxl0 X-ExternalRecipientOutboundConnectors: 0bc7f26d-0264-416e-a6fc-8352af79c58f X-Auto-Response-Suppress: DR, OOF, AutoReply X-OriginatorOrg: virtuozzo.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Nov 2026 14:27:08.6101 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 37b4e14b-b110-4519-fd4e-08df39b68ae2 X-MS-Exchange-CrossTenant-Id: 0bc7f26d-0264-416e-a6fc-8352af79c58f X-MS-Exchange-CrossTenant-AuthSource: MI3PEPF00008498.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: Internet X-MS-Exchange-Transport-CrossTenantHeadersStamped: PA6PR08MB10695 > In the CPR modes guest RAM is preserved in place, not copied: > migrate_ram_is_ignored() is true for every block. Yet ram_init_bitmaps() > still starts the global dirty log, so every listener starts tracking > pages nobody will send. KVM write-protects all guest memory, and VFIO > starts DMA logging on the devices; with cpr-exec that logging is never > stopped before the exec, leaving e.g. the DMA page tracker of an NVIDIA > vGPU running after the update. >=20 > Don't start the dirty log for a migration that migrates no RAM, as is > already done for background snapshots. ram_save_cleanup() only stops > the log if it was started. >=20 > Signed-off-by: Andrey Drobyshev Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.vzint.dev/#/patchset/20261103-vfio= _v1-v7-0-4467fdccbbe6@virtuozzo.com?part=3D28