Commit bb208810 authored by Xin Zeng's avatar Xin Zeng Committed by Alex Williamson
Browse files

vfio/qat: Add vfio_pci driver for Intel QAT SR-IOV VF devices 



Add vfio pci variant driver for Intel QAT SR-IOV VF devices. This driver
registers to the vfio subsystem through the interfaces exposed by the
subsystem. It follows the live migration protocol v2 defined in
uapi/linux/vfio.h and interacts with Intel QAT PF driver through a set
of interfaces defined in qat/qat_mig_dev.h to support live migration of
Intel QAT VF devices.

This version only covers migration for Intel QAT GEN4 VF devices.

Co-developed-by: default avatarYahui Cao <yahui.cao@intel.com>
Signed-off-by: default avatarYahui Cao <yahui.cao@intel.com>
Signed-off-by: default avatarXin Zeng <xin.zeng@intel.com>
Reviewed-by: default avatarGiovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: default avatarKevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240426064051.2859652-1-xin.zeng@intel.com


Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent 4fefd69d

MAINTAINERS

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@@ -23280,6 +23280,14 @@ L: kvm@vger.kernel.org 
S:	Maintained

F:	drivers/vfio/platform/









VFIO QAT PCI DRIVER









M:	Xin Zeng <xin.zeng@intel.com>









M:	Giovanni Cabiddu <giovanni.cabiddu@intel.com>









L:	kvm@vger.kernel.org









L:	qat-linux@intel.com









S:	Supported









F:	drivers/vfio/pci/qat/

















VFIO VIRTIO PCI DRIVER









M:	Yishai Hadas <yishaih@nvidia.com>









L:	kvm@vger.kernel.org

























drivers/vfio/pci/Kconfig



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@@ -69,4 +69,6 @@ source "drivers/vfio/pci/virtio/Kconfig"

















source "drivers/vfio/pci/nvgrace-gpu/Kconfig"



















source "drivers/vfio/pci/qat/Kconfig"



















endmenu
























drivers/vfio/pci/Makefile



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@@ -17,3 +17,5 @@ obj-$(CONFIG_PDS_VFIO_PCI) += pds/







obj-$(CONFIG_VIRTIO_VFIO_PCI) += virtio/



















obj-$(CONFIG_NVGRACE_GPU_VFIO_PCI) += nvgrace-gpu/



















obj-$(CONFIG_QAT_VFIO_PCI) += qat/
























drivers/vfio/pci/qat/Kconfig
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# SPDX-License-Identifier: GPL-2.0-only









config QAT_VFIO_PCI









	tristate "VFIO support for QAT VF PCI devices"









	select VFIO_PCI_CORE









	depends on CRYPTO_DEV_QAT_4XXX









	help









	  This provides migration support for Intel(R) QAT Virtual Function









	  using the VFIO framework.



















	  To compile this as a module, choose M here: the module









	  will be called qat_vfio_pci. If you don't know what to do here,









	  say N.
























drivers/vfio/pci/qat/Makefile
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# SPDX-License-Identifier: GPL-2.0-only









obj-$(CONFIG_QAT_VFIO_PCI) += qat_vfio_pci.o









qat_vfio_pci-y := main.o