Messages in this thread | | | Date | Wed, 15 Nov 2006 11:00:40 -0800 | From | Jeremy Fitzhardinge <> | Subject | Re: i386 PDA patches use of %gs |
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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.
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