glibc/sysdeps/unix
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
..
alpha Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
arm Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
bsd hurd: Avoid some PLTs in libc and librt 2018-04-02 19:07:52 +00:00
i386 Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
inet Switch IDNA implementation to libidn2 [BZ #19728] [BZ #19729] [BZ #22247] 2018-05-23 15:27:24 +02:00
mips Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
powerpc Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sh Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sysv/linux aarch64: Remove HWCAP_CPUID from HWCAP_IMPORTANT 2018-07-06 15:57:18 +01:00
x86_64 Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
clock_gettime.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
clock_nanosleep.c hurd: Avoid some PLTs in libc and librt 2018-04-02 19:07:52 +00:00
clock_settime.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
confstr.h
get_child_max.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getlogin_r.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getlogin.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getpagesize.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
grantpt.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ifreq.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Implies
make-syscalls.sh Make llseek a compat symbol (bug 18471). 2018-05-22 15:44:01 +00:00
Makefile Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
pt-fcntl.c Fix Linux fcntl OFD locks for non-LFS architectures (BZ#20251) 2018-06-26 13:22:53 -03:00
s-proto-cancel.S
s-proto.S
setxid.h
sockatmark.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
stime.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
syscall-template.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
syscalls.list posix: Consolidate Linux fsync syscall 2017-05-18 18:06:47 -03:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00