Re: [PATCH] RTC: Add mmap method to rtc character driver

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Similar functionality is already available via VDSO on
platforms that support it (currently PowerPC and AMD64?) --
seems like a better way forward.

In general I agree, but that only works if you operate on a platform that
supports virtual syscalls, and has vdso configured.

That's why I said "a better way forward", not "this already
works everywhere".

I'm not overly familiar
with vdso, but I didn't think vdso could be supported on all platforms/arches.

Oh?  Which can not, and why?


Segher

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