linux-kernel - Re: [PATCH V3 13/17] riscv: compat: signal: Add rt

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Message-ID: <CAJF2gTRMWj0yVLn2=16Gu1O-6tuqLaxcdduw0YnDK6vrizJEsQ@mail.gmail.com>
Date:   Fri, 21 Jan 2022 15:12:56 +0800
From:   Guo Ren <guoren@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Palmer Dabbelt <palmer@...belt.com>,
        Anup Patel <anup@...infault.org>,
        gregkh <gregkh@...uxfoundation.org>,
        liush <liush@...winnertech.com>, Wei Fu <wefu@...hat.com>,
        Drew Fustini <drew@...gleboard.org>,
        Wang Junqiang <wangjunqiang@...as.ac.cn>,
        Christoph Hellwig <hch@....de>,
        Christoph Hellwig <hch@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        linux-csky@...r.kernel.org,
        linux-s390 <linux-s390@...r.kernel.org>,
        sparclinux <sparclinux@...r.kernel.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        inux-parisc@...r.kernel.org,
        "open list:BROADCOM NVRAM DRIVER" <linux-mips@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Guo Ren <guoren@...ux.alibaba.com>
Subject: Re: [PATCH V3 13/17] riscv: compat: signal: Add rt_frame implementation

On Thu, Jan 20, 2022 at 6:31 PM Arnd Bergmann <arnd@...db.de> wrote:
>
> On Thu, Jan 20, 2022 at 8:39 AM <guoren@...nel.org> wrote:
> >
> > From: Guo Ren <guoren@...ux.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@...ux.alibaba.com>
> > Signed-off-by: Guo Ren <guoren@...nel.org>
> > Cc: Arnd Bergmann <arnd@...db.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/