* Denys Vlasenko <dvlas...@redhat.com> wrote:
> All manipulations of PER_CPU(old_rsp) in C code are removed:
> it is not used on SYSRET return, so storing anything there is
> pointless.
>
> This also allows us to get rid of thread_struct::usersp,
> which was needed only to set PER_CPU(old_rsp) for correct
> return from fork/clone.
>
> Tweak a few comments as well: we no longer have "partial stack frame",
> ever.
So this doesn't really explain it very well, plus it still
unnecessarily mixes up two changes in a single patch: please
don't do that!
I've fixed it all up and split up the patch into two, easier
to bisect parts.
Thanks,
Ingo
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