On Thu, Mar 17, 2022 at 09:47:06AM +0000, Steffen Eiden wrote: > This patch adds a new miscdevice to expose some Ultravisor functions > to userspace. Userspace can send IOCTLs to the uvdevice that will then > emit a corresponding Ultravisor Call and hands the result over to > userspace. The uvdevice is available if the Ultravisor Call facility is > present. > Userspace can call the Retrieve Attestation Measurement > Ultravisor Call using IOCTLs on the uvdevice. > > The uvdevice will do some sanity checks first. > Then, copy the request data to kernel space, build the UVCB, > perform the UV call, and copy the result back to userspace. > > Signed-off-by: Steffen Eiden <seiden@xxxxxxxxxxxxx> > Reviewed-by: Janosch Frank <frankja@xxxxxxxxxxxxx> Do you have a pointer to the userspace code that interacts with this kernel driver? That would be good to have to verify that the api here is sane. thanks, greg k-h
