Re: [PATCH v5 11/11] intel_sgx: driver documentation

From: Jarkko Sakkinen
Date: Mon Nov 20 2017 - 18:08:56 EST

On Sat, Nov 18, 2017 at 12:34:33AM +0100, Thomas Gleixner wrote:
> This is architecural. From the cursory read of that series it seems there
> are two parts to it:
> 1) The actual core handling, which should be in arch/x86 because that
> hardly qualifies as a 'platform' device driver.
> 2) The user space interface, which can be separated out perhaps.
> I don't know how intertwingled they are, but that's hard to tell from the
> actual patches w/o doing a deep inspection. Jarkko should be able to answer
> that.
> Thanks,
> tglx

Darren, tglx,

You can leave user space device as separate module as sgx_ioctl.c merely
calls stuff that I have inside sgx_encl.c. VMA creation is bound to file

My questions would be:

1. What is your recommendation on the deployment under arch/x86?
2. Which parts should be compilable as a LKM? Only the user interface
or both parts?