On Tue, Mar 10, 2026 at 07:30:36PM +0000, Maciej Wieczor-Retman wrote: > On 2026-03-10 at 20:00:22 +0100, Peter Zijlstra wrote: > >On Tue, Mar 10, 2026 at 05:51:19PM +0000, Maciej Wieczor-Retman wrote: > > > >> ======= Compilation > >> Clang was used to compile the series (make LLVM=1) since gcc doesn't > >> seem to have support for KASAN tag-based compiler instrumentation on > >> x86. Patchset does seem to compile with gcc without an issue but doesn't > >> boot afterwards. > > > >Can you put all that under a specific CONFIG and make that depend on > >CC_IS_CLANG? > > I made HAVE_ARCH_KASAN_SW_TAGS depend on CC_IS_CLANG, and that controls all > the > software tags stuff, like ARCH_DISABLE_KASAN_INLINE through KASAN_SW_TAGS. > And ARCH_NEEDS_DEFER_KASAN is for if KASAN is compiled but LAM is not > available, > so that it gets disabled in runtime. > > But sure, I suppose I can add a separate CONFIG with CC_IS_CLANG to these > three > so the clang connection is more transparent.
Right, because building but not booting is BAD :-) While compiler specific features are a dime a dozen.
