Messages in this thread | | | Date | Fri, 8 Jan 2021 09:32:58 +0000 | From | Will Deacon <> | Subject | Re: [PATCH] arm64: make atomic helpers __always_inline |
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Hi Arnd,
On Fri, Jan 08, 2021 at 10:19:56AM +0100, Arnd Bergmann wrote: > From: Arnd Bergmann <arnd@arndb.de> > > With UBSAN enabled and building with clang, there are occasionally > warnings like > > WARNING: modpost: vmlinux.o(.text+0xc533ec): Section mismatch in reference from the function arch_atomic64_or() to the variable .init.data:numa_nodes_parsed > The function arch_atomic64_or() references > the variable __initdata numa_nodes_parsed. > This is often because arch_atomic64_or lacks a __initdata > annotation or the annotation of numa_nodes_parsed is wrong. > > for functions that end up not being inlined as intended but operating > on __initdata variables. Mark these as __always_inline, along with > the corresponding asm-generic wrappers.
Hmm, I don't fully grok this. Why does it matter if a non '__init' function is called with a pointer to some '__initdata'? Or is the reference coming from somewhere else? (where?).
Will
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