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From: Andy Lutomirski <luto@kernel.org>
To: x86@kernel.org, LKML <linux-kernel@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Kernel Hardening <kernel-hardening@lists.openwall.com>,
	Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>
Subject: [kernel-hardening] [PATCH 0/3] x86/pti-ish syscall cleanups
Date: Sun, 28 Jan 2018 10:38:48 -0800	[thread overview]
Message-ID: <cover.1517164461.git.luto@kernel.org> (raw)

Three changes in here:
 - Get rid of the SYSCALL64 fast path as suggested by Linus.

 - Move TS_COMPAT into the same cacheline as thread_info::flags, also
   suggested by Linus.

 - Document SYSCALL_DEFINE a bit better.

Andy Lutomirski (3):
  x86/entry/64: Remove the SYSCALL64 fast path
  x86/asm: Move 'status' from thread_struct to thread_info
  syscalls: Add a bit of documentation to __SYSCALL_DEFINE

 arch/x86/entry/common.c            |   4 +-
 arch/x86/entry/entry_64.S          | 127 ++-----------------------------------
 arch/x86/entry/syscall_64.c        |   7 +-
 arch/x86/include/asm/processor.h   |   2 -
 arch/x86/include/asm/syscall.h     |   6 +-
 arch/x86/include/asm/thread_info.h |   3 +-
 arch/x86/kernel/process_64.c       |   4 +-
 arch/x86/kernel/ptrace.c           |   2 +-
 arch/x86/kernel/signal.c           |   2 +-
 include/linux/syscalls.h           |  10 +++
 10 files changed, 30 insertions(+), 137 deletions(-)

-- 
2.14.3

             reply	other threads:[~2018-01-28 18:38 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-28 18:38 Andy Lutomirski [this message]
2018-01-28 18:38 ` [kernel-hardening] [PATCH 1/3] x86/entry/64: Remove the SYSCALL64 fast path Andy Lutomirski
2018-01-28 19:00   ` [kernel-hardening] " Ingo Molnar
2018-01-30 14:49   ` [tip:x86/pti] " tip-bot for Andy Lutomirski
2018-01-30 14:50   ` [tip:x86/pti] x86/entry/64: Push extra regs right away tip-bot for Andy Lutomirski
2018-01-28 18:38 ` [kernel-hardening] [PATCH 2/3] x86/asm: Move 'status' from thread_struct to thread_info Andy Lutomirski
2018-01-28 19:02   ` [kernel-hardening] " Ingo Molnar
2018-01-28 19:19   ` Linus Torvalds
2018-01-30 14:50   ` [tip:x86/pti] " tip-bot for Andy Lutomirski
2018-01-28 18:38 ` [kernel-hardening] [PATCH 3/3] syscalls: Add a bit of documentation to __SYSCALL_DEFINE Andy Lutomirski
2018-01-28 19:15   ` [kernel-hardening] " Linus Torvalds
2018-01-28 20:21     ` Al Viro
2018-01-28 20:42       ` Linus Torvalds
2018-01-28 22:50         ` Al Viro
2018-01-29  6:22           ` Al Viro
2018-01-28 19:21   ` Ingo Molnar

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