diff options
| author | Miguel Ojeda <ojeda@kernel.org> | 2026-08-16 15:32:33 +0200 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2026-08-23 21:27:17 +0200 |
| commit | 5febf432df1cfa5b25d99b54c32103fafbdd0eb9 (patch) | |
| tree | 93a1ed1d337bc53adf1e572c2586d347703b286e /include/dt-bindings/clock/bcm6358-clock.h | |
| download | linux-stable-5febf432df1cfa5b25d99b54c32103fafbdd0eb9.tar.gz linux-stable-5febf432df1cfa5b25d99b54c32103fafbdd0eb9.zip | |
kbuild: rust: keep Rust objects out of Clang LTO with inline helpersgrafted
Under `CONFIG_LTO_CLANG` + `CONFIG_RUST_INLINE_HELPERS`, one may hit
`objtool` errors such as:
vmlinux.o: error: objtool: _R..._3Gsp4boot+0xd6a:
can't find jump dest instruction at .text._R..._3Gsp4boot+0x1dfd
The reason is that in such builds, the Clang invocation that compiles
the combined Rust plus helpers bitcode emits LLVM bitcode (again) --
the final code generation happens in the linker's LTO step, which the
`-mllvm` trap options passed to Clang do not reach.
This, in turn, means that unreachable traps are missing, and the
impossible paths do not merely fallthrough to the next symbol, but past
the end of their own section, since LTO builds place each function in
its own section.
Thus filter `CC_FLAGS_LTO` out of the Clang invocation, so that it always
emits machine code directly, with the traps in place.
Assisted-by: LLM
Cc: Gary Guo <gary@garyguo.net>
Cc: Boqun Feng <boqun@kernel.org>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Matthew Maurer <mmaurer@google.com>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Fixes: 3a2486cc1da5 ("kbuild: rust: provide an option to inline C helpers into Rust")
Acked-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260816133233.197500-2-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'include/dt-bindings/clock/bcm6358-clock.h')
| -rw-r--r-- | include/dt-bindings/clock/bcm6358-clock.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/dt-bindings/clock/bcm6358-clock.h b/include/dt-bindings/clock/bcm6358-clock.h new file mode 100644 index 000000000..980c9cac4 --- /dev/null +++ b/include/dt-bindings/clock/bcm6358-clock.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef __DT_BINDINGS_CLOCK_BCM6358_H +#define __DT_BINDINGS_CLOCK_BCM6358_H + +#define BCM6358_CLK_ENET 4 +#define BCM6358_CLK_ADSLPHY 5 +#define BCM6358_CLK_PCM 8 +#define BCM6358_CLK_SPI 9 +#define BCM6358_CLK_USBS 10 +#define BCM6358_CLK_SAR 11 +#define BCM6358_CLK_EMUSB 17 +#define BCM6358_CLK_ENET0 18 +#define BCM6358_CLK_ENET1 19 +#define BCM6358_CLK_USBSU 20 +#define BCM6358_CLK_EPHY 21 + +#endif /* __DT_BINDINGS_CLOCK_BCM6358_H */ |