On 7/2/25 23:58, Steve Sistare wrote:
Preserve vfio INTx state across cpr-transfer. Preserve VFIOINTx fields as follows: pin : Recover this from the vfio config in kernel space interrupt : Preserve its eventfd descriptor across exec. unmask : Ditto route.irq : This could perhaps be recovered in vfio_pci_post_load by calling pci_device_route_intx_to_irq(pin), whose implementation reads config space for a bridge device such as ich9. However, there is no guarantee that the bridge vmstate is read before vfio vmstate. Rather than fiddling with MigrationPriority for vmstate handlers, explicitly save route.irq in vfio vmstate. pending : save in vfio vmstate. mmap_timeout, mmap_timer : Re-initialize bool kvm_accel : Re-initializeIn vfio_realize, defer calling vfio_intx_enable until the vmstate is available, in vfio_pci_post_load. Modify vfio_intx_enable and vfio_intx_kvm_enable to skip vfio initialization, but still perform kvm initialization. Signed-off-by: Steve Sistare <steven.sist...@oracle.com> --- hw/vfio/cpr.c | 27 ++++++++++++++++++++++++++- hw/vfio/pci.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 79 insertions(+), 3 deletions(-)
Reviewed-by: Cédric Le Goater <c...@redhat.com> Thanks, C.
