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| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2017-04-25 22:39:17 +0530 |
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| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2017-06-07 11:11:39 +0530 |
| commit | f82e9672ad89ea1ef40bbe1af71478e255e87c5e (patch) | |
| tree | 835c3688e6176ca52c9df51eb30f538d8d276ba9 /ChangeLog | |
| parent | ff08fc59e36e02074eba8ab39b0d9001363970f0 (diff) | |
| download | glibc-f82e9672ad89ea1ef40bbe1af71478e255e87c5e.tar.gz glibc-f82e9672ad89ea1ef40bbe1af71478e255e87c5e.tar.xz glibc-f82e9672ad89ea1ef40bbe1af71478e255e87c5e.zip | |
aarch64: Allow overriding HWCAP_CPUID feature check using HWCAP_MASK
Now that LD_HWCAP_MASK (or glibc.tune.hwcap_mask) is read early enough to influence cpu feature check in aarch64, use it to influence multiarch selection. Setting LD_HWCAP_MASK such that it clears HWCAP_CPUID will now disable multiarch for the binary. HWCAP_CPUID is also now set in HWCAP_IMPORTANT so that it is set by default. With this patch, this feature is only usable with dyanmically linked binaries because LD_HWCAP_MASK is not read for static binaries. A future patch fixes that. * sysdeps/unix/sysv/linux/aarch64/cpu-features.c (init_cpu_features): Use glibc.tune.hwcap_mask. * sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h: New file.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 5b4d842100..f0b25e31cc 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2017-06-07 Siddhesh Poyarekar <siddhesh@sourceware.org> + * sysdeps/unix/sysv/linux/aarch64/cpu-features.c + (init_cpu_features): Use glibc.tune.hwcap_mask. + * sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h: New file. + * elf/dl-hwcaps.h: New file. * elf/dl-hwcaps.c: Include it. (_dl_important_hwcaps)[HAVE_TUNABLES]: Read and update |