On Thu, Aug 29, 2019 at 10:38 AM Christophe Leroy
<christophe.le...@c-s.fr> wrote:
> Le 29/08/2019 à 10:01, Arnd Bergmann a écrit :
> > On Thu, Aug 29, 2019 at 8:46 AM Christoph Hellwig <h...@infradead.org>
> > wrote:
> >
> >>> @@ -277,7 +277,7 @@ static void do_signal(struct task_struct *tsk)
> >>>
> >>> rseq_signal_deliver(&ksig, tsk->thread.regs);
> >>>
> >>> - if (is32) {
> >>> + if ((IS_ENABLED(CONFIG_PPC32) || IS_ENABLED(CONFIG_COMPAT)) &&
> >>> is32) {
> >>
> >> I think we should fix the is_32bit_task definitions instead so that
> >> callers don't need this mess. I'd suggest something like:
> >>
> >> #ifdef CONFIG_COMPAT
> >> #define is_32bit_task() test_thread_flag(TIF_32BIT)
> >> #else
> >> #define is_32bit_task() IS_ENABLED(CONFIG_PPC32)
> >> #endif
> >
> > Are there actually any (correct) uses of is_32bit_task() outside of
> > #ifdef CONFIG_PPC64?
>
> There is at least stack_maxrandom_size()
> Also brk_rnd() and do_signal()
Right, makes sense.
Arnd
