Set skip_kexec_clear_master on live update prepare() so that the device participating in live update can continue to perform DMA during kexec phase.
Signed-off-by: Vipin Sharma <[email protected]> --- drivers/vfio/pci/vfio_pci_liveupdate.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/vfio/pci/vfio_pci_liveupdate.c b/drivers/vfio/pci/vfio_pci_liveupdate.c index 8e0ee01127b3..789b52665e35 100644 --- a/drivers/vfio/pci/vfio_pci_liveupdate.c +++ b/drivers/vfio/pci/vfio_pci_liveupdate.c @@ -54,6 +54,7 @@ static int vfio_pci_liveupdate_prepare(struct liveupdate_file_handler *handler, goto err_free_folio; *data = virt_to_phys(ser); + vdev->pdev->skip_kexec_clear_master = true; return 0; @@ -67,7 +68,12 @@ static void vfio_pci_liveupdate_cancel(struct liveupdate_file_handler *handler, { struct vfio_pci_core_device_ser *ser = phys_to_virt(data); struct folio *folio = virt_to_folio(ser); + struct vfio_pci_core_device *vdev; + struct vfio_device *device; + device = vfio_device_from_file(file); + vdev = container_of(device, struct vfio_pci_core_device, vdev); + vdev->pdev->skip_kexec_clear_master = false; WARN_ON_ONCE(kho_unpreserve_folio(folio)); folio_put(folio); } -- 2.51.0.858.gf9c4a03a3a-goog
