Ingo Molnar wrote:
> i'd not even use glibc's %gs but set up two separate selectors. (that's
> a more controlled experiment - someone might run a non-TLS glibc, etc.)
>
Well, in that case they probably don't care whether the kernel uses %fs
or %gs ;)
But either way, this doesn't have much bearing on Eric's test; we'd be
only talking about a few ns per kernel exit, rather than 5% for read/write.
J
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