Messages in this thread | | | Date | Tue, 10 Oct 2023 15:10:54 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86/alternatives: Disable KASAN on text_poke_early() in apply_alternatives() |
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On Tue, Oct 10, 2023 at 12:10:56PM +0200, Peter Zijlstra wrote: > Now, obviously you really don't want boot_cpu_has() in > __VIRTUAL_MASK_SHIFT, that would be really bad (Linus recently > complained about how horrible the code-gen is around this already, must > not make it far worse).
You mean a MOV (%rip) and a TEST are so horrible there because it is a mask?
I'd experiment with it when I get a chance...
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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