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From: Arnd Bergmann <arnd@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
	Helge Deller <deller@gmx.de>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	"David S. Miller" <davem@davemloft.net>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	Al Viro <viro@zeniv.linux.org.uk>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Christoph Hellwig <hch@infradead.org>,
	Feng Tang <feng.tang@intel.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
	linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-s390@vger.kernel.org, sparclinux@vger.kernel.org,
	linux-arch@vger.kernel.org, linux-api@vger.kernel.org,
	linux-mm@kvack.org
Subject: [PATCH v5 0/6] compat: remove compat_alloc_user_space
Date: Tue, 27 Jul 2021 16:48:53 +0200	[thread overview]
Message-ID: <20210727144859.4150043-1-arnd@kernel.org> (raw)

From: Arnd Bergmann <arnd@arndb.de>

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.

Out of the other remaining callers, the linux-media series went into
v5.14, and the network ioctl handling is now fixed in net-next, so
these are the last remaining users, and I now include the final
patch to remove the definitions as well.

Since these patches are now all that remains, it would be nice to
merge it all through Andrew's Linux-mm tree, which is already based
on top of linux-next.

       Arnd
---

Changes in v4:

- Rebase on top of net-next
- Split up and improve the kexec patch based on Christoph's suggestions
- Include final patch to remove compat_alloc_user_space
- Cc compat architecture maintainers

Link: https://lore.kernel.org/lkml/20210720150950.3669610-1-arnd@kernel.org/

Changes in v3:

- fix whitespace as pointed out by Christoph Hellwig
- minor build fixes
- rebase to v5.13-rc1

Link: https://lore.kernel.org/lkml/20210517203343.3941777-1-arnd@kernel.org/

Changes in v2:

- address review comments from Christoph Hellwig
- split syscall removal into a separate patch
- replace __X32_COND_SYSCALL() with individual macros for x32

Link: https://lore.kernel.org/lkml/20201208150614.GA15765@infradead.org/

Arnd Bergmann (6):
  kexec: move locking into do_kexec_load
  kexec: avoid compat_alloc_user_space
  mm: simplify compat_sys_move_pages
  mm: simplify compat numa syscalls
  compat: remove some compat entry points
  arch: remove compat_alloc_user_space

 arch/arm64/include/asm/compat.h           |   5 -
 arch/arm64/include/asm/uaccess.h          |  11 --
 arch/arm64/include/asm/unistd32.h         |  10 +-
 arch/arm64/lib/Makefile                   |   2 +-
 arch/arm64/lib/copy_in_user.S             |  77 ---------
 arch/mips/cavium-octeon/octeon-memcpy.S   |   2 -
 arch/mips/include/asm/compat.h            |   8 -
 arch/mips/include/asm/uaccess.h           |  26 ---
 arch/mips/kernel/syscalls/syscall_n32.tbl |  10 +-
 arch/mips/kernel/syscalls/syscall_o32.tbl |  10 +-
 arch/mips/lib/memcpy.S                    |  11 --
 arch/parisc/include/asm/compat.h          |   6 -
 arch/parisc/include/asm/uaccess.h         |   2 -
 arch/parisc/kernel/syscalls/syscall.tbl   |   8 +-
 arch/parisc/lib/memcpy.c                  |   9 -
 arch/powerpc/include/asm/compat.h         |  16 --
 arch/powerpc/kernel/syscalls/syscall.tbl  |  10 +-
 arch/s390/include/asm/compat.h            |  10 --
 arch/s390/include/asm/uaccess.h           |   3 -
 arch/s390/kernel/syscalls/syscall.tbl     |  10 +-
 arch/s390/lib/uaccess.c                   |  63 -------
 arch/sparc/include/asm/compat.h           |  19 ---
 arch/sparc/kernel/process_64.c            |   2 +-
 arch/sparc/kernel/signal32.c              |  12 +-
 arch/sparc/kernel/signal_64.c             |   8 +-
 arch/sparc/kernel/syscalls/syscall.tbl    |  10 +-
 arch/x86/entry/syscalls/syscall_32.tbl    |   4 +-
 arch/x86/entry/syscalls/syscall_64.tbl    |   2 +-
 arch/x86/include/asm/compat.h             |  13 --
 arch/x86/include/asm/uaccess_64.h         |   7 -
 include/linux/compat.h                    |  39 +----
 include/linux/uaccess.h                   |  10 --
 include/uapi/asm-generic/unistd.h         |  10 +-
 kernel/compat.c                           |  21 ---
 kernel/kexec.c                            | 103 +++++-------
 kernel/sys_ni.c                           |   5 -
 mm/mempolicy.c                            | 196 +++++-----------------
 mm/migrate.c                              |  50 +++---
 38 files changed, 175 insertions(+), 645 deletions(-)
 delete mode 100644 arch/arm64/lib/copy_in_user.S

-- 
2.29.2

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Feng Tang <feng.tang@intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-api@vger.kernel.org
Cc: linux-mm@kvack.org

             reply	other threads:[~2021-07-27 14:51 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-27 14:48 Arnd Bergmann [this message]
2021-07-27 14:48 ` [PATCH v5 1/6] kexec: move locking into do_kexec_load Arnd Bergmann
2021-07-28 16:09   ` Eric W. Biederman
2021-07-27 14:48 ` [PATCH v5 2/6] kexec: avoid compat_alloc_user_space Arnd Bergmann
2021-07-28 16:10   ` Eric W. Biederman
2021-07-27 14:48 ` [PATCH v5 3/6] mm: simplify compat_sys_move_pages Arnd Bergmann
2021-07-27 14:48 ` [PATCH v5 4/6] mm: simplify compat numa syscalls Arnd Bergmann
2021-07-27 17:27   ` Heiko Carstens
2021-07-27 17:40     ` Arnd Bergmann
2021-07-27 18:38       ` Heiko Carstens
2021-07-27 18:49         ` Arnd Bergmann
2021-07-27 19:15           ` Heiko Carstens
2021-07-27 14:48 ` [PATCH v5 5/6] compat: remove some compat entry points Arnd Bergmann
2021-07-27 14:48 ` [PATCH v5 6/6] arch: remove compat_alloc_user_space Arnd Bergmann
2021-07-27 15:09   ` Christoph Hellwig
2021-07-27 14:59 ` [PATCH v5 0/6] compat: " Christoph Hellwig
2021-07-27 20:10   ` Andrew Morton
2021-07-27 20:42     ` Arnd Bergmann
2021-07-30  9:49 ` Heiko Carstens
2021-07-30 13:35   ` Arnd Bergmann

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