Messages in this thread | | | Date | Tue, 16 Aug 2022 15:01:33 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86/nospec: Unwreck the RSB stuffing |
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On Tue, Aug 16, 2022 at 12:52:58PM +0000, Andrew Cooper wrote: > One minor point. Stuff 32 slots. > > There are Intel parts out in the world with RSBs larger than 32 entries, > and this loop does not fill the entire RSB on those. > > This is why the 32-entry stuffing loop is explicitly not supported on > eIBRS hardware as a general mechanism.
I'm guessing there will be an Intel patch forthcoming, making that RSB_CLEAR_LOOPS more dynamic, based on the current model.
:-)
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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