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From:   Olof Johansson <olof@lixom.net>
Date:   Fri, 16 Nov 2018 18:39:45 -0800
Message-ID: <CAOesGMhgBxu+L-R5OaEdBjv4jGSY3AnB9LqaKvWKKUgEKBabjw@mail.gmail.com>
Subject: Re: [PATCH v2] riscv: add asm/unistd.h UAPI header
To:     david.abdurachmanov@gmail.com
Cc:     Palmer Dabbelt <palmer@sifive.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        linux-riscv@lists.infradead.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Arnd Bergmann <arnd@arndb.de>, marcin.juszkiewicz@linaro.org,
        Guenter Roeck <linux@roeck-us.net>
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On Thu, Nov 8, 2018 at 11:02 AM David Abdurachmanov
<david.abdurachmanov@gmail.com> wrote:
>
> Marcin Juszkiewicz reported issues while generating syscall table for riscv
> using 4.20-rc1. The patch refactors our unistd.h files to match some other
> architectures.
>
> - Add asm/unistd.h UAPI header, which has __ARCH_WANT_NEW_STAT only for 64-bit
> - Remove asm/syscalls.h UAPI header and merge to asm/unistd.h
> - Adjust kernel asm/unistd.h
>
> So now asm/unistd.h UAPI header should show all syscalls for riscv.
>
> Before this, Makefile simply put `#include <asm-generic/unistd.h>` into
> generated asm/unistd.h UAPI header thus user didn't see:
>
> - __NR_riscv_flush_icache
> - __NR_newfstatat
> - __NR_fstat
>
> which are supported by riscv kernel.
>
> Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Fixes: 67314ec7b025 ("RISC-V: Request newstat syscalls")
> Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com>

Acked-by: Olof Johansson <olof@lixom,net>

This fixes the 32-bit build error I'm seeing here as well. Palmer, it
would be nice to have 4.20 compile 32-bit kernels still.

Per builder logs:
http://arm-soc.lixom.net/buildlogs/mainline/v4.20-rc2-133-g1ce80e0fe98e7/buildall.riscv.rv32_defconfig.log.failed,
actual errors are:

include/uapi/asm-generic/unistd.h:247:29: error: 'sys_fstatat64'
undeclared here (not in a function); did you mean 'sys_fstatfs64'?
include/uapi/asm-generic/unistd.h:249:27: error: 'sys_fstat64'
undeclared here (not in a function); did you mean 'sys_fstatat64'?


-Olof