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Date: Tue, 27 Jul 2021 16:48:53 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Arnd Bergmann <arnd@...db.de>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
"James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
Helge Deller <deller@....de>,
Michael Ellerman <mpe@...erman.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ibm.com>,
"David S. Miller" <davem@...emloft.net>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
Al Viro <viro@...iv.linux.org.uk>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
Christoph Hellwig <hch@...radead.org>,
Feng Tang <feng.tang@...el.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
sparclinux@...r.kernel.org, linux-arch@...r.kernel.org,
linux-api@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH v5 0/6] compat: remove compat_alloc_user_space
From: Arnd Bergmann <arnd@...db.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@....com>
Cc: Will Deacon <will@...nel.org>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>
Cc: Helge Deller <deller@....de>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Heiko Carstens <hca@...ux.ibm.com>
Cc: Vasily Gorbik <gor@...ux.ibm.com>
Cc: Christian Borntraeger <borntraeger@...ibm.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: x86@...nel.org
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Al Viro <viro@...iv.linux.org.uk>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: "Eric W. Biederman" <ebiederm@...ssion.com>
Cc: Christoph Hellwig <hch@...radead.org>
Cc: Feng Tang <feng.tang@...el.com>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-mips@...r.kernel.org
Cc: linux-parisc@...r.kernel.org
Cc: linuxppc-dev@...ts.ozlabs.org
Cc: linux-s390@...r.kernel.org
Cc: sparclinux@...r.kernel.org
Cc: linux-arch@...r.kernel.org
Cc: linux-api@...r.kernel.org
Cc: linux-mm@...ck.org
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