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

[Segher Boessenkool]

> > 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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