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rust: kbuild: fix export of bss symbols 

[ Upstream commit b8673d56935c32a4e0a1a0b40951fdd313dbf340 ]

Symbols in the bss segment are not currently exported. This is a problem
for Rust modules that link against statics, that are resident in the kernel
image. Thus export symbols in the bss segment.

Fixes: 2f7ab1267d ("Kbuild: add Rust support")
Signed-off-by: Andreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://lore.kernel.org/r/20240815074519.2684107-2-nmi@metaspace.dk
[ Reworded slightly. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andreas Hindborg 2024-08-15 07:49:30 +00:00 committed by Greg Kroah-Hartman
parent 4de4e53bbd
commit b4b2115d1f
1 changed files with 1 additions and 1 deletions
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2
rust/Makefile
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@ -363,7 +363,7 @@ $(obj)/bindings/bindings_helpers_generated.rs: $(src)/helpers.c FORCE
quiet_cmd_exports = EXPORTS $@
cmd_exports = \
$(NM) -p --defined-only $< \
| awk '/ (T|R|D) / {printf "EXPORT_SYMBOL_RUST_GPL(%s);\n",$$3}' > $@
| awk '/ (T|R|D|B) / {printf "EXPORT_SYMBOL_RUST_GPL(%s);\n",$$3}' > $@
$(obj)/exports_core_generated.h: $(obj)/core.o FORCE
$(call if_changed,exports)