linux-kernel - [PATCH v3 0/2] x86: Remove compat vdso support

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Date:	Wed, 12 Mar 2014 11:57:23 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org
Cc:	Stefani Seibold <stefani@...bold.net>,
	Andreas Brief <Andreas.Brief@...de-schwarz.com>,
	Martin Runge <Martin.Runge@...de-schwarz.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>,
	Andi Kleen <andi@...stfloor.org>,
	Andy Lutomirski <luto@...capital.net>
Subject: [PATCH v3 0/2] x86: Remove compat vdso support

This is in the spirit of throwing patches at the list to see what sticks :)

This is intended as an alternative to my compat vdso relocation patches
(http://thread.gmane.org/gmane.linux.kernel/1665080)

v1 of this patch was thoroughly nakked out of existence.  v2 is similar,
but might survive the nakking.  The critical difference is that this
version defaults to the compatible vdso-less mode instead of the modern
incompatible mode.

Changes from v2: Update a comment that I missed.

Changes from v1:
 - CONFIG_ENABLE_VDSO32_BY_DEFAULT now defaults to n
 - Improved the config text and description
 - Improved the kernel parameter docs

Andy Lutomirski (2):
  x86: Remove compat vdso support
  x86_32: Remove user bit from identity map PDE

 Documentation/kernel-parameters.txt  |  23 +++-
 arch/x86/Kconfig                     |  28 +++--
 arch/x86/include/asm/elf.h           |   4 -
 arch/x86/include/asm/fixmap.h        |   8 --
 arch/x86/include/asm/pgtable_types.h |   7 +-
 arch/x86/include/asm/vdso.h          |   5 +-
 arch/x86/vdso/vdso-layout.lds.S      |   2 +-
 arch/x86/vdso/vdso32-setup.c         | 234 ++++-------------------------------
 arch/x86/vdso/vdso32/vdso32.lds.S    |   2 -
 9 files changed, 62 insertions(+), 251 deletions(-)

-- 
1.8.5.3

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