Re: [PATCH v3] x86/sgx: Synchronize encl->srcu in sgx_encl_release().

[Paul E. McKenney]

On Wed, Jan 13, 2021 at 07:00:33PM +0100, Borislav Petkov wrote:
> On Wed, Jan 13, 2021 at 09:46:02AM -0800, Paul E. McKenney wrote:
> 
> < Lemme trim that mail fat >
> 
> > It seems to me that loading and unloading SGX enclaves qualifies as a
> > configuration operation, so use of synchronize_srcu_expedited() should be
> > just fine in that case.  This of course implies that SGX enclaves should
> > not be loaded or unloaded while an aggressive real-time application
> > is running.  Which might well be the case for other reasons.
> 
> I believe RT and SGX should be orthogonal to each-other unless someone rolls out
> of the woodwork, wanting to run realtime enclaves... Ewww.

I could speculate about an RT workload running on a system that also
ran non-realtime SGX workloads, but who knows?  Stranger things have
happened.  ;-)

							Thanx, Paul