Re: [RFC PATCH 01/35] syscalls: define goal to not call sys_xyzzy() from within the kernel

[Ingo Molnar]

* Andy Lutomirski <luto@xxxxxxxxxx> wrote:

> On Sun, Mar 11, 2018 at 10:55 AM, Dominik Brodowski
> <linux@xxxxxxxxxxxxxxxxxxxx> wrote:
> > The syscall entry points to the kernel defined by SYSCALL_DEFINEx()
> > and COMPAT_SYSCALL_DEFINEx() should only be called from userspace
> > through kernel entry points, but not from the kernel itself. This
> > will allow cleanups and optimizations to the entry paths *and* to
> > the parts of the kernel code which currently need to pretend to be
> > userspace in order to make use of syscalls.
> >
> 
> > +
> > +/*
> > + * The kernel should not use call syscalls (i.e., sys_xyzyyz()) directly.
> > + * Instead, use one of the following functions which work equivalent to
> > + * the syscall they are named for.
> 
> "Instead, use one of the functions which work equivalently, e.g. do_xysyyz()"

The previous sentence has a typo as well, should be:

  * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.

or so.

Thanks,

	Ingo