[PATCH V17 6/7] rust: Add PowerPC support
From: Mukesh Kumar Chaurasiya (IBM) <hidden>
Date: 2026-07-08 08:26:30
Also in:
lkml, llvm, rust-for-linux
Subsystem:
linux for powerpc (32-bit and 64-bit), rust, the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Miguel Ojeda, Linus Torvalds
From: Link Mauve <redacted> For now only Big Endian 32-bit PowerPC is supported, as that is the only hardware I have. This has been tested on the Nintendo Wii so far, but I plan on also using it on the GameCube, Wii U and Apple G4. These changes aren’t the only ones required to get the kernel to compile and link on PowerPC, libcore will also have to be changed to not use integer division to format u64, u128 and core::time::Duration, otherwise __udivdi3() and __umoddi3() will have to be added. I have tested this change by replacing the three implementations with unimplemented!() and it linked just fine. Signed-off-by: Link Mauve <redacted> Link: https://github.com/Rust-for-Linux/linux/issues/105 Link: https://github.com/linuxppc/issues/issues/451 Acked-by: Gary Guo <gary@garyguo.net> Link: https://github.com/rust-lang/compiler-team/issues/986 Signed-off-by: Mukesh Kumar Chaurasiya (IBM) <redacted> --- arch/powerpc/Kconfig | 1 + arch/powerpc/Makefile | 2 ++ rust/Makefile | 4 +++- 3 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index f7ce5fff81f0..badd7c99b87f 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig@@ -285,6 +285,7 @@ config PPC select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RELIABLE_STACKTRACE select HAVE_RSEQ + select HAVE_RUST if PPC32 select HAVE_SAMPLE_FTRACE_DIRECT if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_SAMPLE_FTRACE_DIRECT_MULTI if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_SETUP_PER_CPU_AREA if PPC64
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index a58b1029592c..589613eaa5dc 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile@@ -61,6 +61,8 @@ else KBUILD_LDFLAGS_MODULE += $(objtree)/arch/powerpc/lib/crtsavres.o endif +KBUILD_RUSTFLAGS += --target=powerpc-unknown-linux-gnu + ifdef CONFIG_CPU_LITTLE_ENDIAN KBUILD_CPPFLAGS += -mlittle-endian KBUILD_LDFLAGS += -EL
diff --git a/rust/Makefile b/rust/Makefile
index 7aa8fcad4c43..61e7dc496fe4 100644
--- a/rust/Makefile
+++ b/rust/Makefile@@ -448,7 +448,8 @@ bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \ -fstrict-flex-arrays=% -fmin-function-alignment=% \ -fzero-init-padding-bits=% -mno-fdpic \ -fdiagnostics-show-context -fdiagnostics-show-context=% \ - --param=% --param asan-% -fno-isolate-erroneous-paths-dereference + --param=% --param asan-% -fno-isolate-erroneous-paths-dereference \ + -ffixed-r2 -mmultiple -mno-readonly-in-sdata # Derived from `scripts/Makefile.clang`. BINDGEN_TARGET_x86 := x86_64-linux-gnu
@@ -458,6 +459,7 @@ BINDGEN_TARGET_loongarch := loongarch64-linux-gnusf BINDGEN_TARGET_s390 := s390x-linux-gnu # This is only for i386 UM builds, which need the 32-bit target not -m32 BINDGEN_TARGET_i386 := i386-linux-gnu +BINDGEN_TARGET_powerpc := powerpc-linux-gnu BINDGEN_TARGET_um := $(BINDGEN_TARGET_$(SUBARCH)) BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH))
--
2.55.0