Probing for native availability of isel from userspace

[malc]

Hello,

Is it possible to determine if _native_ isel is available from userspace 
somehow? So far my searches on the web and within kernel (headers)/glibc
were fruitless (aux vectors, cpu_user_features), few people people (Hollis
Blanchard, Richard Henderson) suggested PPC_FEATURE_ARCH_2_06, but
PowerISA_V2.06B_V2_PUBLIC.pdf says - "3.3.11 Fixed-Point Select [Category: 
Phased-In (sV2.06)]" about isel, the sV2.06 (s part) means something i
suppose, furthermore Hollis mentioned that some pre 2.06 cores came with
isel.

Thanks.

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