linux-kernel - [PATCH 0/4] syscalls: remove compat_alloc_user

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Message-Id: <20200918132439.1475479-1-arnd@arndb.de>
Date:   Fri, 18 Sep 2020 15:24:35 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Christoph Hellwig <hch@...radead.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Eric Biederman <ebiederm@...ssion.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-arch@...r.kernel.org, linux-mm@...ck.org,
        kexec@...ts.infradead.org, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 0/4] syscalls: remove compat_alloc_user_space callers

Going through compat_alloc_user_space() to convert indirect system call
arguments tends to add complexity compared to handling the native and
compat logic in the same code.

I have patches for all other uses of compat_alloc_user_space() as well,
and would expect that we can subsequently remove the interface itself.

      Arnd

Arnd Bergmann (4):
  x86: add __X32_COND_SYSCALL() macro
  kexec: remove compat_sys_kexec_load syscall
  mm: remove compat_sys_move_pages
  mm: remove compat numa syscalls

 arch/arm64/include/asm/unistd32.h         |  12 +-
 arch/mips/kernel/syscalls/syscall_n32.tbl |  12 +-
 arch/mips/kernel/syscalls/syscall_o32.tbl |  12 +-
 arch/parisc/kernel/syscalls/syscall.tbl   |  10 +-
 arch/powerpc/kernel/syscalls/syscall.tbl  |  12 +-
 arch/s390/kernel/syscalls/syscall.tbl     |  12 +-
 arch/sparc/kernel/syscalls/syscall.tbl    |  12 +-
 arch/x86/entry/syscalls/syscall_32.tbl    |   6 +-
 arch/x86/entry/syscalls/syscall_64.tbl    |   4 +-
 arch/x86/include/asm/syscall_wrapper.h    |   5 +
 include/linux/compat.h                    |  26 ---
 include/uapi/asm-generic/unistd.h         |  12 +-
 kernel/kexec.c                            |  77 +++------
 kernel/sys_ni.c                           |   5 -
 mm/mempolicy.c                            | 193 +++++-----------------
 mm/migrate.c                              |  45 +++--
 16 files changed, 143 insertions(+), 312 deletions(-)

-- 
2.27.0