[PATCH 0/3] x86-64: vsyscall emulation cleanups

From: Andy Lutomirski
Date: Mon Jun 06 2011 - 13:27:51 EST

[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

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Patch 1/3 deletes some very outdated comments in vsyscall_64.c.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

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x86-64: Fix outdated comments in vsyscall_64.c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(-)


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