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Message-ID: <20200806141044.GP1236603@ZenIV.linux.org.uk>
Date: Thu, 6 Aug 2020 15:10:44 +0100
From: Al Viro <viro@...iv.linux.org.uk>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: [git pull] regset work
regset API changes. Regularize copy_regset_{to,from}_user() callers,
switch to saner calling conventions for ->get(), kill user_regset_copyout().
->put() side of things will have to wait for the next cycle, unfortunately.
The series had been posted (l-k, linux-arch) and sat in -next for weeks.
The balance is about -1KLoC and replacements for ->get() instances are a lot
saner.
Two trivial conflicts - one in arch/x86/include/asm/fpu/xstate.h
(obvious merge), another in arch/x86/kernel/fpu/xstate.c (the variant from
this branch is the right one).
The following changes since commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407:
Linux 5.8-rc1 (2020-06-14 12:45:04 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.regset
for you to fetch changes up to ce327e1c54119179066d6f3573a28001febc9265:
regset: kill user_regset_copyout{,_zero}() (2020-07-27 14:31:13 -0400)
----------------------------------------------------------------
Al Viro (42):
x86: copy_fpstate_to_sigframe(): have fpregs_soft_get() use kernel buffer
x86: kill dump_fpu()
[ia64] sanitize elf_access_gpreg()
[ia64] teach elf_access_reg() to handle the missing range (r16..r31)
[ia64] regularize do_gpregs_[gs]et()
[ia64] access_uarea(): stop bothering with gpregs_[gs]et()
[ia64] access_uarea(): don't bother with fpregs_[gs]et()
sparc64: switch genregs32_get() to use of get_from_target()
sparc32: get rid of odd callers of copy_regset_to_user()
sparc64: get rid of odd callers of copy_regset_to_user()
arm64: take fetching compat reg out of pt_regs into a new helper
arm64: get rid of copy_regset_to_user() in compat_ptrace_read_user()
arm64: sanitize compat_ptrace_write_user()
sparc32: get rid of odd callers of copy_regset_from_user()
sparc64: get rid of odd callers of copy_regset_from_user()
introduction of regset ->get() wrappers, switching ELF coredumps to those
Merge branches 'regset.x86', 'regset.ia64', 'regset.sparc' and 'regset.arm64' into work.regset
copy_regset_to_user(): do all copyout at once.
regset: new method and helpers for it
x86: switch to ->regset_get()
powerpc: switch to ->regset_get()
s390: switch to ->regset_get()
sparc: switch to ->regset_get()
mips: switch to ->regset_get()
arm64: switch to ->regset_get()
sh: convert to ->regset_get()
arm: switch to ->regset_get()
arc: switch to ->regset_get()
ia64: switch to ->regset_get()
c6x: switch to ->regset_get()
riscv: switch to ->regset_get()
openrisc: switch to ->regset_get()
h8300: switch to ->regset_get()
hexagon: switch to ->regset_get()
nios2: switch to ->regset_get()
nds32: switch to ->regset_get()
parisc: switch to ->regset_get()
xtensa: switch to ->regset_get()
csky: switch to ->regset_get()
regset: kill ->get()
regset(): kill ->get_size()
regset: kill user_regset_copyout{,_zero}()
arch/arc/kernel/ptrace.c | 148 +++----
arch/arm/kernel/ptrace.c | 52 +--
arch/arm64/kernel/ptrace.c | 303 +++++---------
arch/c6x/kernel/ptrace.c | 11 +-
arch/csky/kernel/ptrace.c | 24 +-
arch/h8300/kernel/ptrace.c | 17 +-
arch/hexagon/kernel/ptrace.c | 62 +--
arch/ia64/kernel/ptrace.c | 396 +++++++------------
arch/mips/kernel/ptrace.c | 204 +++-------
arch/nds32/kernel/ptrace.c | 9 +-
arch/nios2/kernel/ptrace.c | 51 +--
arch/openrisc/kernel/ptrace.c | 26 +-
arch/parisc/kernel/ptrace.c | 84 +---
arch/powerpc/kernel/ptrace/ptrace-altivec.c | 37 +-
arch/powerpc/kernel/ptrace/ptrace-decl.h | 44 +--
arch/powerpc/kernel/ptrace/ptrace-novsx.c | 5 +-
arch/powerpc/kernel/ptrace/ptrace-spe.c | 16 +-
arch/powerpc/kernel/ptrace/ptrace-tm.c | 152 +++----
arch/powerpc/kernel/ptrace/ptrace-view.c | 185 ++++-----
arch/powerpc/kernel/ptrace/ptrace-vsx.c | 13 +-
arch/riscv/kernel/ptrace.c | 33 +-
arch/s390/kernel/ptrace.c | 199 +++-------
arch/sh/kernel/process_32.c | 5 +-
arch/sh/kernel/ptrace_32.c | 48 +--
arch/sparc/kernel/ptrace_32.c | 269 +++++++------
arch/sparc/kernel/ptrace_64.c | 591 ++++++++++++++--------------
arch/x86/include/asm/fpu/internal.h | 1 -
arch/x86/include/asm/fpu/regset.h | 4 +-
arch/x86/include/asm/fpu/xstate.h | 4 +-
arch/x86/kernel/fpu/regset.c | 55 +--
arch/x86/kernel/fpu/signal.c | 13 +-
arch/x86/kernel/fpu/xstate.c | 164 ++------
arch/x86/kernel/ptrace.c | 75 ++--
arch/x86/kernel/tls.c | 32 +-
arch/x86/kernel/tls.h | 2 +-
arch/x86/math-emu/fpu_entry.c | 19 +-
arch/xtensa/kernel/ptrace.c | 16 +-
fs/binfmt_elf.c | 54 ++-
include/linux/regset.h | 218 +++-------
kernel/Makefile | 2 +-
kernel/regset.c | 76 ++++
41 files changed, 1370 insertions(+), 2349 deletions(-)
create mode 100644 kernel/regset.c
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