Re: [PATCH v3 5/6] vfio/migration: Block VFIO migration with postcopy migration

2023-09-06 Thread Peter Xu
On Wed, Sep 06, 2023 at 06:08:52PM +0300, Avihai Horon wrote: > VFIO migration is not compatible with postcopy migration. A VFIO device > in the destination can't handle page faults for pages that have not been > sent yet. > > Doing such migration will cause the VM to crash in the destination: >

[PATCH v3 5/6] vfio/migration: Block VFIO migration with postcopy migration

2023-09-06 Thread Avihai Horon
VFIO migration is not compatible with postcopy migration. A VFIO device in the destination can't handle page faults for pages that have not been sent yet. Doing such migration will cause the VM to crash in the destination: qemu-system-x86_64: VFIO_MAP_DMA failed: Bad address qemu-system-x86_64: v