[PATCH V3 13/17] riscv: compat: signal: Add rt_frame implementation

[Guo Ren]

On Thu, Jan 20, 2022 at 6:31 PM Arnd Bergmann <arnd at arndb.de> wrote:
>
> On Thu, Jan 20, 2022 at 8:39 AM <guoren at kernel.org> wrote:
> >
> > From: Guo Ren <guoren at linux.alibaba.com>
> >
> > Implement compat_setup_rt_frame for sigcontext save & restore. The
> > main process is the same with signal, but the rv32 pt_regs' size
> > is different from rv64's, so we needs convert them.
> >
> > Signed-off-by: Guo Ren <guoren at linux.alibaba.com>
> > Signed-off-by: Guo Ren <guoren at kernel.org>
> > Cc: Arnd Bergmann <arnd at arndb.de>
>
> I hope someone else can properly review this part, it's not my area
> but it looks complex enough that it could bring subtle bugs.
Here are ltp signal test results:

sigaction01                                        PASS       0
sigaction02                                        PASS       0
sigaltstack01                                      PASS       0
sigaltstack02                                      PASS       0
sighold02                                          PASS       0
signal01                                           PASS       0
signal02                                           PASS       0
signal03                                           PASS       0
signal04                                           PASS       0
signal05                                           PASS       0
signal06                                           CONF       32
signalfd01                                         PASS       0
signalfd4_01                                       PASS       0
signalfd4_02                                       PASS       0
sigpending02                                       PASS       0
sigprocmask01                                      PASS       0
sigrelse01                                         PASS       0
sigsuspend01                                       PASS       0
sigtimedwait01                                     PASS       0
sigwait01                                          PASS       0
sigwaitinfo01                                      CONF       32


>
>        Arnd



-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/