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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2017-10-20 17:35:12 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2017-11-03 14:47:35 +0000 |
| commit | 0ca3d1d6d096e222346c74601d50e9013c8bb25d (patch) | |
| tree | 02b9894345e53b26c42029f8147a360811bf29fc /ChangeLog | |
| parent | 2c1d4e5fe4e722e0b747d6bddd7ce3a6b1766c52 (diff) | |
| download | glibc-0ca3d1d6d096e222346c74601d50e9013c8bb25d.tar.gz glibc-0ca3d1d6d096e222346c74601d50e9013c8bb25d.tar.xz glibc-0ca3d1d6d096e222346c74601d50e9013c8bb25d.zip | |
[BZ #18572] arm: Disable lazy initialization of tlsdesc entries
Follow up to https://sourceware.org/ml/libc-alpha/2015-11/msg00272.html Always do tls descriptor initialization at load time during relocation processing (as if DF_BIND_NOW were set for the binary) to avoid barriers at every tls access. This patch mimics bind-now semantics in the lazy relocation code of the arm target (elf_machine_lazy_rel). Ideally the static linker should be updated too to not emit tlsdesc relocs in DT_REL*, so elf_machine_lazy_rel is not called on them at all. [BZ #18572] * sysdeps/arm/dl-machine.h (elf_machine_lazy_rel): Do symbol binding non-lazily for R_ARM_TLS_DESC.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 778e41fd45..e1dc25c62e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,11 @@ 2017-11-03 Szabolcs Nagy <szabolcs.nagy@arm.com> + [BZ #18572] + * sysdeps/arm/dl-machine.h (elf_machine_lazy_rel): Do symbol binding + non-lazily for R_ARM_TLS_DESC. + +2017-11-03 Szabolcs Nagy <szabolcs.nagy@arm.com> + [BZ #17078] * sysdeps/arm/dl-machine.h (elf_machine_rela): Remove the R_ARM_TLS_DESC case. |