[PATCH v3 0/4] aarch64: Allow overriding HWCAP_CPUID feature check

[Siddhesh Poyarekar]

Hi,

Here is another take at the remaining patches to allow overriding HWCAP_CPUID
feature check.  Changes from the previous version:

 - Added convenience macro to get dl_hwcap_mask
 - Disable reading LD_HWCAP_MASK in static binaries when tunables are disabled
 - Enable reading LD_HWCAP_MASK in static binaries when tunables are enabled
 - Fix x86 exponential behaviour with ld_hwcap_mask set to a high value on
   static binaries
 - Add patch to write hwcap strings to LD_SHOW_AUXV and for ldconfig

I have not reposted the earlier 1/5, 2/5 and 4/5 since they have been acked.
I'll push them in together with all these patches since it did not make sense to
put them in isolation.

Tested on x86_64 and aarch64.


Siddhesh Poyarekar (4):
  tunables: Use glibc.tune.hwcap_mask tunable instead of _dl_hwcap_mask
  aarch64: Allow overriding HWCAP_CPUID feature check using HWCAP_MASK
  Make LD_HWCAP_MASK usable for static binaries
  aarch64: Add hwcap string routines

 elf/dl-cache.c                                 |  5 +-
 elf/dl-hwcaps.c                                | 11 +++-
 elf/dl-hwcaps.h                                | 30 +++++++++
 elf/dl-support.c                               |  2 +
 elf/dl-tunables.h                              |  2 +
 elf/rtld.c                                     |  4 ++
 sysdeps/generic/ldsodefs.h                     |  2 +
 sysdeps/sparc/sparc32/dl-machine.h             |  6 +-
 sysdeps/unix/sysv/linux/aarch64/cpu-features.c | 10 +--
 sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c  | 15 +++++
 sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h  | 86 ++++++++++++++++++++++++++
 sysdeps/x86/cpu-features.c                     | 10 +--
 12 files changed, 170 insertions(+), 13 deletions(-)
 create mode 100644 elf/dl-hwcaps.h
 create mode 100644 sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h

-- 
2.7.4