Re: [PATCH] seccomp: remove unused arg from secure_computing()

Borislav Petkov
2019-09-23T19:34:44Z

On Mon, Sep 23, 2019 at 11:41:59AM -0700, Andy Lutomirski wrote:
> On Mon, Sep 23, 2019 at 2:49 AM Borislav Petkov <bp@alien8.de> wrote:
> >
> > On Fri, Sep 20, 2019 at 03:19:09PM +0200, Christian Brauner wrote:
> > > While touching seccomp code I realized that the struct seccomp_data
> > > argument to secure_computing() seems to be unused by all current
> > > callers. So let's remove it unless there is some subtlety I missed.
> > > Note, I only tested this on x86.
> >
> > What was amluto thinking in
> >
> > 2f275de5d1ed ("seccomp: Add a seccomp_data parameter secure_computing()")
>
> IIRC there was a period of time in which x86 used secure_computing()
> for normal syscalls, and it was a good deal faster to have the arch
> code supply seccomp_data. x86 no longer works like this, and syscalls
> aren't fast anymore ayway :(

Uhuh, thanks Andy.

Christian, pls add that piece of history to the commit message.

Thx.

--
Regards/Gruss,
Boris.