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x86, kcsan: Add __no_kcsan to noinstr
The 'noinstr' function attribute means no-instrumentation, this should very much include *SAN. Because lots of that is broken at present, only include KCSAN for now, as that is limited to clang11, which has sane function attribute behaviour. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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@ -118,10 +118,6 @@ struct ftrace_likely_data {
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#define notrace __attribute__((__no_instrument_function__))
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#endif
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/* Section for code which can't be instrumented at all */
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#define noinstr \
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noinline notrace __attribute((__section__(".noinstr.text")))
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/*
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* it doesn't make sense on ARM (currently the only user of __naked)
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* to trace naked functions because then mcount is called without
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@ -200,6 +196,10 @@ struct ftrace_likely_data {
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#define __no_sanitize_or_inline __always_inline
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#endif
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/* Section for code which can't be instrumented at all */
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#define noinstr \
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noinline notrace __attribute((__section__(".noinstr.text"))) __no_kcsan
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#endif /* __KERNEL__ */
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#endif /* __ASSEMBLY__ */
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