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vfio/iommufd: Implement the iommufd backend

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The iommufd backend is implemented based on the new /dev/iommu user API.
This backend obviously depends on CONFIG_IOMMUFD.

So far, the iommufd backend doesn't support dirty page sync yet.

Co-authored-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Yi Liu 2023-11-21 16:44:03 +08:00 • committed by Cédric Le Goater
parent 1eae5b7bd3
commit 5ee3dc7af7
5 changed files with 452 additions and 0 deletions
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11
include/hw/vfio/vfio-common.h
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@ -89,6 +89,14 @@ typedef struct VFIOHostDMAWindow {
QLIST_ENTRY(VFIOHostDMAWindow) hostwin_next;
} VFIOHostDMAWindow;
typedef struct IOMMUFDBackend IOMMUFDBackend;
typedef struct VFIOIOMMUFDContainer {
VFIOContainerBase bcontainer;
IOMMUFDBackend *be;
uint32_t ioas_id;
} VFIOIOMMUFDContainer;
typedef struct VFIODeviceOps VFIODeviceOps;
typedef struct VFIODevice {
@ -116,6 +124,8 @@ typedef struct VFIODevice {
OnOffAuto pre_copy_dirty_page_tracking;
bool dirty_pages_supported;
bool dirty_tracking;
int devid;
IOMMUFDBackend *iommufd;
} VFIODevice;
struct VFIODeviceOps {
@ -201,6 +211,7 @@ typedef QLIST_HEAD(VFIODeviceList, VFIODevice) VFIODeviceList;
extern VFIOGroupList vfio_group_list;
extern VFIODeviceList vfio_device_list;
extern const VFIOIOMMUOps vfio_legacy_ops;
extern const VFIOIOMMUOps vfio_iommufd_ops;
extern const MemoryListener vfio_memory_listener;
extern int vfio_kvm_device_fd;