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d0cd798071
glibc/sysdeps/unix/sysv/linux/aarch64
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Szabolcs Nagy d0cd798071 aarch64: Remove HWCAP_CPUID from HWCAP_IMPORTANT 
This partially reverts

commit f82e9672ad
Author:     Siddhesh Poyarekar <siddhesh@sourceware.org>

    aarch64: Allow overriding HWCAP_CPUID feature check using HWCAP_MASK

The idea was to make it possible to disable cpuid based ifunc resolution
in glibc by changing the hwcap mask which the user could already control.

However the hwcap mask has an orthogonal role: it specifies additional
library search paths for the dynamic linker.  So "cpuid" got added to
the search paths when it was set in the default mask (HWCAP_IMPORTANT),
which is not useful behaviour, the hwcap masking should not be reused
in the cpu features code.

Meanwhile there is a tunable to set the cpu explicitly so it is possible
to disable the cpuid based dispatch without using a hwcap mask:

  GLIBC_TUNABLES=glibc.tune.cpu=generic

	* sysdeps/unix/sysv/linux/aarch64/cpu-features.c (init_cpu_features):
	Use dl_hwcap without masking.
	* sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h (HWCAP_IMPORTANT):
	Remove HWCAP_CPUID.
2018-07-06 15:57:18 +01:00
..
bits Add AArch64 hwcap values from Linux 4.17. 2018-06-05 15:51:12 +00:00
sys Add PTRACE_SECCOMP_GET_METADATA from Linux 4.16 to sys/ptrace.h. 2018-04-24 12:11:35 +00:00
__read_tp.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
c++-types.data AArch64: Consolidate nptl/ subdirectories under linux/... 2014-06-26 09:29:24 -07:00
clone.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
configure LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes 2018-01-25 17:20:28 +01:00
configure.ac Refactor handling of /lib64 etc. cases, move out of sysdeps/gnu/configure.ac. 2014-07-17 14:35:48 +00:00
cpu-features.c aarch64: Remove HWCAP_CPUID from HWCAP_IMPORTANT 2018-07-06 15:57:18 +01:00
cpu-features.h aarch64: add HXT Phecda core memory operation ifuncs 2018-06-12 21:29:11 +05:30
dl-cache.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-procinfo.c Add AArch64 hwcap values from Linux 4.17. 2018-06-05 15:51:12 +00:00
dl-procinfo.h aarch64: Remove HWCAP_CPUID from HWCAP_IMPORTANT 2018-07-06 15:57:18 +01:00
dl-static.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
gettimeofday.c aarch64: Use an ifunc/VDSO to implement gettimeofday in shared glibc. 2018-06-14 13:56:57 +01:00
Implies NPTL is no longer an add-on! 2014-07-07 09:29:06 -07:00
init-first.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ioctl.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ipc_priv.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
jmp_buf-macros.h Add jmp_buf-macros.h 2017-11-09 05:10:03 -08:00
kernel_rt_sigframe.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
kernel-features.h Refactor Linux ARCH_FORK implementation 2018-03-07 17:39:40 -03:00
ld.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
ldconfig.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ldsodefs.h Remove tilegx port. 2018-04-27 19:11:24 +00:00
libanl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libBrokenLocale.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libc-__read_tp.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libc-start.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libc-vdso.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libc.abilist Add renameat2 function [BZ #17662] 2018-07-05 19:00:10 +02:00
libcrypt.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libdl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libm.abilist Add narrowing divide functions. 2018-05-17 00:40:52 +00:00
libnsl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libpthread.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libresolv.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
librt.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libthread_db.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libutil.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
localplt.data ld.so: Introduce struct dl_exception 2017-08-10 16:54:57 +02:00
makecontext.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Makefile Remove abi-*-options compiler flags 2017-08-28 17:16:53 +02:00
profil-counter.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
pt-vfork.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
readelflib.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
setcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
shlib-versions Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
sigaction.c linux: Consolidate sigaction implementation 2018-04-05 17:09:50 -03:00
sigcontextinfo.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
swapcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
syscall.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sysconf.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sysdep.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ucontext_i.sym aarch64: Revert the change of the __reserved member of mcontext_t 2018-01-24 11:53:30 +00:00
ucontext-internal.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Versions Revert {send,sendm,recv,recvm}msg conformance changes 2016-06-10 11:58:16 -03:00
vfork.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00