On Fri, Mar 12, 2021 at 11:04:48PM +0530, ameynarkhede03@xxxxxxxxx wrote: > From: Amey Narkhede <ameynarkhede03@xxxxxxxxx> > > PCI and PCIe devices may support a number of possible reset mechanisms > for example Function Level Reset (FLR) provided via Advanced Feature or > PCIe capabilities, Power Management reset, bus reset, or device specific reset. > Currently the PCI subsystem creates a policy prioritizing these reset methods > which provides neither visibility nor control to userspace. > > Expose the reset methods available per device to userspace, via sysfs > and allow an administrative user or device owner to have ability to > manage per device reset method priorities or exclusions. > This feature aims to allow greater control of a device for use cases > as device assignment, where specific device or platform issues may > interact poorly with a given reset method, and for which device specific > quirks have not been developed. Sorry, are we talking about specific devices/flows/applications that must have this functionality or about theoretical use case? Thanks
