[PATCH 0/3] x86: Add --enable-cet=permissive

[H.J. Lu]

When CET is enabled, it is an error to dlopen a non CET enabled shared
library in CET enabled application.  It may be desirable to make CET
permissive, that is disable CET when dlopening a non CET enabled shared
library.  With the new --enable-cet=permissive configure option, CET is
disabled when dlopening a non CET enabled shared library.

To support --enable-cet=permissive, CET_MAX is renamed to
CET_CONTROL_MASK and <dl-procruntime.c> is included in rtld.c to get
architecture specific initializer in rtld_global.

H.J. Lu (3):
  CET: Rename CET_MAX to CET_CONTROL_MASK [BZ #25887]
  rtld: Get architecture specific initializer in rtld_global
  x86: Add --enable-cet=permissive

 INSTALL                              | 26 +++++++++++--------
 config.h.in                          |  3 +++
 elf/rtld.c                           |  2 ++
 manual/install.texi                  | 12 ++++++---
 sysdeps/unix/sysv/linux/x86/Makefile |  2 +-
 sysdeps/x86/Makefile                 | 18 +++++++++----
 sysdeps/x86/cet-tunables.h           | 22 ++++++++++++++--
 sysdeps/x86/configure                | 21 ++++++++-------
 sysdeps/x86/configure.ac             | 19 +++++++-------
 sysdeps/x86/cpu-features.c           |  7 +++--
 sysdeps/x86/cpu-tunables.c           | 39 +++++++++++-----------------
 sysdeps/x86/dl-cet.c                 |  6 ++---
 sysdeps/x86/dl-procruntime.c         |  5 ++++
 sysdeps/x86/tst-cet-legacy-5.c       | 25 ++++++++++++------
 sysdeps/x86/tst-cet-legacy-6.c       | 25 ++++++++++++------
 15 files changed, 141 insertions(+), 91 deletions(-)

-- 
2.25.4