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Date: Mon, 6 Jun 2011 13:27:22 -0400
From: Andy Lutomirski <luto@....EDU>
To: x86@...nel.org, Ingo Molnar <mingo@...e.hu>
Cc: pageexec@...email.hu, Mikael Pettersson <mikpe@...uu.se>,
"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
Linus Torvalds <torvalds@...ux-foundation.org>,
Andy Lutomirski <luto@....edu>
Subject: [PATCH 0/3] x86-64: vsyscall emulation cleanups
[cc list trimmed from the previous patches to include only people who seem
like they would care about this round of changes. My apologies if I missed
anyone.]
This series applies to the x86/vdso branch of the -tip tree.
Patch 1/3 deletes some very outdated comments in vsyscall_64.c.
Patch 2/3 simplifies the vsyscall emulation int 0xcc mechanism and removes
some ret instructions that are (as pointed out by the PaX team) possibly
dangerous.
Patch 3/3 fixes what is arguably the most serious problem of all: people
thought that CONFIG_COMPAT_VSYSCALLS controlled binary compatibility. It
changes the Kconfig short description, help text, and feature removal entry
to make it a lot more clear what's going on.
Andy Lutomirski (3):
x86-64: Fix outdated comments in vsyscall_64.c
x86-64: Clean up vsyscall emulation and remove fixed-address ret
x86-64: Clarify CONFIG_COMPAT_VSYSCALLS text
Documentation/feature-removal-schedule.txt | 11 ++-
arch/x86/Kconfig | 27 +++++----
arch/x86/include/asm/vsyscall.h | 10 +++-
arch/x86/kernel/vsyscall_64.c | 85 +++++++++-------------------
arch/x86/kernel/vsyscall_emu_64.S | 17 +-----
5 files changed, 58 insertions(+), 92 deletions(-)
--
1.7.5.2
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