Messages in this thread | | | Date | Fri, 8 Apr 2022 21:14:35 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH] kbuild: Remove CONFIG_DEBUG_SECTION_MISMATCH |
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On Sat, Apr 09, 2022 at 03:29:21AM +0900, Masahiro Yamada wrote: > Is [2] caused by dead code that was not optimized out > due to the unusual inlining decisions by the compiler ?
The complaint is due to SMAP validation; objtool will scream if there's a CALL in between STAC/CLAC. The thinking is that since they open a security window, we want tight code between them. We also very much don't want tracing and other funnies to happen there. As such, any CALL is dis-allowed.
This weird option is having us upgrade quite a few 'inline' to '__always_inline'.
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