Messages in this thread | | | Date | Tue, 17 Jan 2023 19:21:18 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCHv14 08/17] x86/mm: Reduce untagged_addr() overhead until the first LAM user |
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On Tue, Jan 17, 2023 at 09:18:01AM -0800, Linus Torvalds wrote:
> But maybe even those aren't worth worrying about. At least they do the > unmasking outside the loop - although then in the case of execve(), > the string copies themselves are obviously done in a loop anyway. > > Kirill, do you have clear numbers for that static key being a noticeable win?
Numbers would be good; I think this all started as a precaution, but clearly that's not really working out so well :/
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