From: Arnd Bergmann <arnd@arndb.de>
To: Guo Ren <guoren@kernel.org>
Cc: "Palmer Dabbelt" <palmer@dabbelt.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Anup Patel" <anup.patel@wdc.com>,
gregkh <gregkh@linuxfoundation.org>,
liush <liush@allwinnertech.com>,
wefu@redhat.com, "Drew Fustini" <drew@beagleboard.org>,
wangjunqiang@iscas.ac.cn, "Wei Wu (吴伟)" <lazyparser@gmail.com>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
linux-riscv <linux-riscv@lists.infradead.org>,
linux-csky@vger.kernel.org, "Guo Ren" <guoren@linux.alibaba.com>
Subject: Re: [PATCH 03/13] riscv: compat: Add basic compat date type implementation
Date: Tue, 21 Dec 2021 18:12:46 +0100 [thread overview]
Message-ID: <CAK8P3a3navO2Z2F5zxisby5EBNDo8rwQ6hxSuyniFgFxrQ5qXQ@mail.gmail.com> (raw)
In-Reply-To: <20211221163532.2636028-4-guoren@kernel.org>
On Tue, Dec 21, 2021 at 5:35 PM <guoren@kernel.org> wrote:
>
> From: Guo Ren <guoren@linux.alibaba.com>
>
> Implement asm/compat.h for struct compat_xxx, RLIM_INFINITY,
> OFF_T_MAX, is_compat_task, compat_user_regset, regset convert.
>
> Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
> ---
> arch/riscv/include/asm/compat.h | 259 +++++++++++++++++++++++++++
Since both the native and compat side use the generic interface, I think this
should all be part of asm-generic/compat.h, in case other architectures want to
share this in the future. Maybe see if any other architectures use the
same definition
for some of the structures and then remove the duplicates.
> +struct compat_stat {
> + compat_ulong_t st_dev;
> + compat_ulong_t st_ino;
> + compat_uint_t st_mode;
> + compat_uint_t st_nlink;
You should not need a compat_stat, because native rv32 does not have a
stat() syscall.
> +static inline int is_compat_task(void)
> +{
> + return test_thread_flag(TIF_32BIT);
> +}
> +
> +struct compat_user_regs_struct {
> + compat_ulong_t pc;
> + compat_ulong_t ra;
These clearly need to stay in arch/riscv
Arnd
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next prev parent reply other threads:[~2021-12-21 17:18 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-21 16:35 [PATCH 00/13] riscv: compat: Add COMPAT mode support for rv64 guoren
2021-12-21 16:35 ` [PATCH 01/13] syscalls: compat: Fix the missing part for __SYSCALL_COMPAT guoren
2021-12-21 17:08 ` Arnd Bergmann
2021-12-22 11:16 ` Guo Ren
2021-12-22 11:24 ` Arnd Bergmann
2021-12-24 6:52 ` Christoph Hellwig
2021-12-21 16:35 ` [PATCH 02/13] riscv: Fixup difference with defconfig guoren
2021-12-21 17:09 ` Arnd Bergmann
2021-12-22 11:34 ` Guo Ren
2021-12-22 11:44 ` Arnd Bergmann
2021-12-22 13:06 ` Guo Ren
2021-12-22 13:30 ` Arnd Bergmann
2021-12-23 2:12 ` Guo Ren
2021-12-21 16:35 ` [PATCH 03/13] riscv: compat: Add basic compat date type implementation guoren
2021-12-21 17:12 ` Arnd Bergmann [this message]
2021-12-22 12:03 ` Guo Ren
2021-12-22 12:46 ` Arnd Bergmann
2021-12-26 15:33 ` Guo Ren
2021-12-24 6:53 ` Christoph Hellwig
2021-12-24 9:28 ` Guo Ren
2021-12-21 16:35 ` [PATCH 04/13] riscv: compat: Re-implement TASK_SIZE for COMPAT_32BIT guoren
2021-12-21 16:35 ` [PATCH 05/13] riscv: compat: syscall: Add compat_sys_call_table implementation guoren
2021-12-21 17:15 ` Arnd Bergmann
2021-12-22 12:43 ` Guo Ren
2021-12-22 13:21 ` Arnd Bergmann
2021-12-22 14:00 ` Arnd Bergmann
2021-12-24 9:42 ` Guo Ren
2021-12-21 16:35 ` [PATCH 06/13] riscv: compat: syscall: Add entry.S implementation guoren
2021-12-21 16:35 ` [PATCH 07/13] riscv: compat: Add elf.h implementation guoren
2021-12-21 16:35 ` [PATCH 08/13] riscv: compat: Add COMPAT Kbuild skeletal support guoren
2021-12-21 17:21 ` Arnd Bergmann
2021-12-22 12:06 ` Guo Ren
2021-12-24 6:54 ` Christoph Hellwig
2021-12-21 16:35 ` [PATCH 09/13] riscv: compat: init: Add hw-cap detect in setup_arch guoren
2021-12-21 16:35 ` [PATCH 10/13] riscv: compat: vdso: Add rv32 VDSO base code implementation guoren
2021-12-21 16:35 ` [PATCH 11/13] riscv: compat: vdso: Add setup additional pages implementation guoren
2021-12-21 16:35 ` [PATCH 12/13] riscv: compat: signal: Add rt_frame implementation guoren
2021-12-21 16:35 ` [PATCH 13/13] riscv: compat: ptrace: Add compat_arch_ptrace implement guoren
2021-12-21 17:38 ` [PATCH 00/13] riscv: compat: Add COMPAT mode support for rv64 Arnd Bergmann
2021-12-22 12:59 ` Guo Ren
2021-12-22 13:29 ` Arnd Bergmann
2021-12-26 8:22 ` Jisheng Zhang
2021-12-26 12:38 ` Guo Ren
2021-12-26 20:31 ` Arnd Bergmann
2021-12-27 1:16 ` Guo Ren
2021-12-27 2:29 ` Jessica Clarke
2021-12-28 10:45 ` Guo Ren
2021-12-22 12:00 ` Guo Ren
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