Messages in this thread | | | Date | Thu, 14 Oct 2021 00:10:53 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 4/9] x86/alternative: Implement .retpoline_sites support |
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On Wed, Oct 13, 2021 at 02:49:07PM -0700, Josh Poimboeuf wrote: > So you've got a WARN_ON_ONCE, a BUG_ON, and a too-deep feature check, > all in the name of supporting this scheme. ok...
Mostly because I'm way too lazy to type out that table. With the thunks being in .S, I really don't see that getting messed up, they even in their own special section too.
> If performance of the linear lookup were a real concern then you could > just put rax and r11 at the beginning of the array.
That would mean the table would have to be { __thunk, reg_idx }, which is even more yuck.
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