Power9 introduced Virtual Accelerator Switchboard (VAS) which allows
userspace to communicate with Nest Accelerator (NX) directly. But
kernel has to establish channel to NX for userspace. This document
describes user space API that application can use to establish
communication channel.
Signed-off-by: NSukadev Bhattiprolu <sukadev@linux.ibm.com>
Signed-off-by: NHaren Myneni <haren@linux.ibm.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1587114715.2275.1135.camel@hbabu-laptop