On 6/15/2023 11:47 PM, Tian, Kevin wrote:
Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding.From: Brett Creeley <brett.creeley@xxxxxxx> Sent: Saturday, June 3, 2023 6:03 AM This is a patchset for a new vendor specific VFIO driver (pds_vfio) for use with the AMD/Pensando Distributed Services Card (DSC). This driver makes use of the pds_core driver. This driver will use the pds_core device's adminq as the VFIO control path to the DSC. In order to make adminq calls, the VFIO instance makes use of functions exported by the pds_core driver. In order to receive events from pds_core, the pds_vfio driver registers to a private notifier. This is needed for various events that come from the device. An ASCII diagram of a VFIO instance looks something like this and can be used with the VFIO subsystem to provide the VF device VFIO and live migration support. .------. .-----------------------. | QEMU |--| VM .-------------. | '......' | | Eth VF | | | | .-------------. | | | | SR-IOV VF | | | | '-------------' | | '------------||---------' .--------------. || |/dev/<vfio_fd>| || '--------------' || Host Userspace | || =================================================== || Host Kernel | || .--------. || |vfio-pci| || '--------' || .------------------. || || | | exported API |<----+ || || | '--------------| | || || | | .-------------. || | pds_core |--->| pds_vfio | || '------------------' | '-------------' || || | || || 09:00.0 notifier 09:00.1 || == PCI ===============================================||===== || || || .----------. .----------. || ,-----| PF |----------| VF |-------------------, | '----------' '----------' | VF | | DSC | data/control | | | path | -----------------------------------------------------------why is "VF data/control path" drawn out of the VF box?
Just a mistake in the drawing. I can fix it. Thanks.
