| From | Andy Lutomirski <> | Date | Sun, 11 Mar 2018 15:24:01 +0000 | Subject | Re: [RFC PATCH 01/35] syscalls: define goal to not call sys_xyzzy() from within the kernel |
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On Sun, Mar 11, 2018 at 10:55 AM, Dominik Brodowski <linux@dominikbrodowski.net> 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()"
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