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Re: [PATCH 4/6] aarch64: Allow overriding HWCAP_CPUID feature check using HWCAP_MASK
On 01/06/2017 17:12, Siddhesh Poyarekar wrote:
> 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.