On Wed, 2019-08-21 at 17:33 -0700, Sean Christopherson wrote:
> On Thu, Aug 22, 2019 at 02:29:01AM +0300, Jarkko Sakkinen wrote:
> > The existence of the page is checked first hand for legit race
> > conditions (either two or more concurrent threads running the #PF
> > handler or the reclaimer has taken over the page):
> >
> > /* Page is already resident in the EPC. */
> > if (entry->epc_page) {
> > if (entry->desc & SGX_ENCL_PAGE_RECLAIMED)
> > return ERR_PTR(-EBUSY);
> >
> > return entry;
> > }
> >
> > After that the existence is a checked as a condition for ELDU.
> >
> > This commit removes the redundant check.
> >
> > Cc: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
> > Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
> > ---
>
> Ha, I remember seeing this a while back and completely forgot about it.
>
> Reviewed-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
[I guess for this ack-by would be appropriate as they are not mainline
patches]
Thanks Sean. These kind of regression are almost unavoidable because of
heavy rebasing...
/Jarkko
