Re: [RFC PATCH 00/16] x86/split_lock: Enable #AC exception for split locked accesses

[Peter Zijlstra]

On Thu, Jun 21, 2018 at 03:00:03PM -0700, Fenghua Yu wrote:
> The control knob for user is to choose killing the process (default) or
> re-executing the faulting instruction without blocking the process.
> Re-executing the instruction maybe be useful in platforms that run
> well controlled apps with less split locks.

Just fix the applications. I doubt there will be many, many other
platforms will already SIGBUS on unaligned access, atomic or not.