Re: [PATCH v3 9/9] Documentation/powerpc: VAS API

Haren Myneni's on March 7, 2020 10:39 am:

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.

Agree with Daniel this is good documentation.

But I don't see mention of the word 'signal' anywhere. The signal stuff
is one of the trickiest parts this code being added. It would be great if
that could be documented and even with example code or at least a
description of why it's required and can't be done some other way.

Does something like io_uring require signals in such cases?

Thanks,
Nick