linux-kernel - [PATCH v2 0/5] x86,vdso: Restore a bunch of section headers

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Message-Id: <cover.1403291930.git.luto@amacapital.net>
Date:	Fri, 20 Jun 2014 12:20:39 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Josh Boyer <jwboyer@...oraproject.org>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>
Subject: [PATCH v2 0/5] x86,vdso: Restore a bunch of section headers

This series makes me sad.  It brings the 64-bit vdso back above 4kB,
like it was in 3.15.  It's also just silly, but it seems to be
needed to keep binutils happy when debugging the vdso.

Patch 5 isn't really necessary, and is likely not 3.16 material.
It's useful for testing the rest of this series, though.

Only patch 5 changed from v1:
 - Fix for old binutils.
 - Pass --build-id, since normal binutils may not have it on by default.

Andy Lutomirski (5):
  x86,vdso: Discard the __bug_table section
  x86,vdso2c: Use better macros for ELF bitness
  x86,vdso: Improve the fake section headers
  x86,vdso: Remove some redundant in-memory section headers
  x86,vdso: Create .build-id links for unstripped vdso files

 arch/x86/vdso/Makefile                   |  20 +++-
 arch/x86/vdso/vdso-fakesections.c        |  41 +++----
 arch/x86/vdso/vdso-layout.lds.S          |  64 +++++++---
 arch/x86/vdso/vdso.lds.S                 |   2 +
 arch/x86/vdso/vdso2c.c                   |  73 ++++++------
 arch/x86/vdso/vdso2c.h                   | 197 ++++++++++++++++++++++++++-----
 arch/x86/vdso/vdso32/vdso-fakesections.c |   1 +
 arch/x86/vdso/vdsox32.lds.S              |   2 +
 8 files changed, 284 insertions(+), 116 deletions(-)
 create mode 100644 arch/x86/vdso/vdso32/vdso-fakesections.c

-- 
1.9.3

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