Commit b0eed085 authored by Longfang Liu's avatar Longfang Liu Committed by Alex Williamson
Browse files

hisi_acc_vfio_pci: Add support for VFIO live migration 



VMs assigned with HiSilicon ACC VF devices can now perform live migration
if the VF devices are bind to the hisi_acc_vfio_pci driver.

Just like ACC PF/VF drivers this VFIO driver also make use of the HiSilicon
QM interface. QM stands for Queue Management which is a generic IP used by
ACC devices. It provides a generic PCIe interface for the CPU and the ACC
devices to share a group of queues.

QM integrated into an accelerator provides queue management service.
Queues can be assigned to PF and VFs, and queues can be controlled by
unified mailboxes and doorbells.

The QM driver (drivers/crypto/hisilicon/qm.c) provides generic
interfaces to ACC drivers to manage the QM.

Signed-off-by: default avatarLongfang Liu <liulongfang@huawei.com>
Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Signed-off-by: default avatarShameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Link: https://lore.kernel.org/r/20220308184902.2242-9-shameerali.kolothum.thodi@huawei.com
Reviewed-by: default avatarKevin Tian <kevin.tian@intel.com>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent 1e459b25

drivers/vfio/pci/hisilicon/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -3,6 +3,11 @@ config HISI_ACC_VFIO_PCI 
	tristate "VFIO PCI support for HiSilicon ACC devices"

	depends on ARM64 || (COMPILE_TEST && 64BIT)

	depends on VFIO_PCI_CORE

	depends on PCI_MSI

	depends on CRYPTO_DEV_HISI_QM

	depends on CRYPTO_DEV_HISI_HPRE

	depends on CRYPTO_DEV_HISI_SEC2

	depends on CRYPTO_DEV_HISI_ZIP

	help

	  This provides generic PCI support for HiSilicon ACC devices

	  using the VFIO framework.