From: "Mukesh Kumar Chaurasiya (IBM)" <mkchauras@gmail•com>
To: maddy@linux•ibm.com, mpe@ellerman•id.au, npiggin@gmail•com,
chleroy@kernel•org, peterz@infradead•org, jpoimboe@kernel•org,
jbaron@akamai•com, aliceryhl@google•com, rostedt@goodmis•org,
ardb@kernel•org, ojeda@kernel•org, boqun@kernel•org,
gary@garyguo•net, bjorn3_gh@protonmail•com, lossin@kernel•org,
a.hindborg@kernel•org, tmgross@umich•edu, dakr@kernel•org,
nathan@kernel•org, nick.desaulniers+lkml@gmail•com,
morbo@google•com, justinstitt@google•com,
daniel.almeida@collabora•com, acourbot@nvidia•com,
fujita.tomonori@gmail•com, gregkh@linuxfoundation•org,
prafulrai522@gmail•com, tamird@kernel•org, kees@kernel•org,
mkchauras@gmail•com, lyude@redhat•com, airlied@gmail•com,
linuxppc-dev@lists•ozlabs.org, linux-kernel@vger•kernel.org,
rust-for-linux@vger•kernel.org, llvm@lists•linux.dev
Cc: Link Mauve <linkmauve@linkmauve•fr>
Subject: [PATCH V16 6/7] rust: Add PowerPC support
Date: Wed, 20 May 2026 12:16:28 +0530 [thread overview]
Message-ID: <20260520064630.1785283-7-mkchauras@gmail.com> (raw)
In-Reply-To: <20260520064630.1785283-1-mkchauras@gmail.com>
From: Link Mauve <linkmauve@linkmauve•fr>
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 <linkmauve@linkmauve•fr>
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) <mkchauras@gmail•com>
---
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 e93df95b79e7..4ac897b650d4 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 8ce4fa0e5e57..d9485f5e95e6 100644
--- a/rust/Makefile
+++ b/rust/Makefile
@@ -400,7 +400,8 @@ 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
@@ -409,6 +410,7 @@ BINDGEN_TARGET_arm := arm-linux-gnueabi
BINDGEN_TARGET_loongarch := loongarch64-linux-gnusf
# 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))
--
2.54.0
next prev parent reply other threads:[~2026-05-20 6:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-20 6:46 [PATCH V16 0/7] Rust Support for powerpc Mukesh Kumar Chaurasiya (IBM)
2026-05-20 6:46 ` [PATCH V16 1/7] rust: Fix "multiple candidates for rmeta dependency core" error Mukesh Kumar Chaurasiya (IBM)
2026-05-20 6:46 ` [PATCH V16 2/7] dma-resv: Fix undefined symbol when CONFIG_DMA_SHARED_BUFFER is disabled Mukesh Kumar Chaurasiya (IBM)
2026-05-20 6:46 ` [PATCH V16 3/7] powerpc/jump_label: adjust inline asm to be consistent Mukesh Kumar Chaurasiya (IBM)
2026-05-20 6:46 ` [PATCH V16 4/7] rust/powerpc: Set min rustc version for powerpc Mukesh Kumar Chaurasiya (IBM)
2026-05-25 18:16 ` Miguel Ojeda
2026-05-26 8:52 ` Mukesh Kumar Chaurasiya
2026-05-26 12:21 ` Miguel Ojeda
2026-05-27 11:15 ` Gary Guo
2026-06-02 7:15 ` Mukesh Kumar Chaurasiya
2026-05-20 6:46 ` [PATCH V16 5/7] rust: Make __udivdi3() and __umoddi3() panic Mukesh Kumar Chaurasiya (IBM)
2026-05-20 6:46 ` Mukesh Kumar Chaurasiya (IBM) [this message]
2026-05-20 6:46 ` [PATCH V16 7/7] powerpc: Enable Rust for ppc64le Mukesh Kumar Chaurasiya (IBM)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260520064630.1785283-7-mkchauras@gmail.com \
--to=mkchauras@gmail$(echo .)com \
--cc=a.hindborg@kernel$(echo .)org \
--cc=acourbot@nvidia$(echo .)com \
--cc=airlied@gmail$(echo .)com \
--cc=aliceryhl@google$(echo .)com \
--cc=ardb@kernel$(echo .)org \
--cc=bjorn3_gh@protonmail$(echo .)com \
--cc=boqun@kernel$(echo .)org \
--cc=chleroy@kernel$(echo .)org \
--cc=dakr@kernel$(echo .)org \
--cc=daniel.almeida@collabora$(echo .)com \
--cc=fujita.tomonori@gmail$(echo .)com \
--cc=gary@garyguo$(echo .)net \
--cc=gregkh@linuxfoundation$(echo .)org \
--cc=jbaron@akamai$(echo .)com \
--cc=jpoimboe@kernel$(echo .)org \
--cc=justinstitt@google$(echo .)com \
--cc=kees@kernel$(echo .)org \
--cc=linkmauve@linkmauve$(echo .)fr \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=linuxppc-dev@lists$(echo .)ozlabs.org \
--cc=llvm@lists$(echo .)linux.dev \
--cc=lossin@kernel$(echo .)org \
--cc=lyude@redhat$(echo .)com \
--cc=maddy@linux$(echo .)ibm.com \
--cc=morbo@google$(echo .)com \
--cc=mpe@ellerman$(echo .)id.au \
--cc=nathan@kernel$(echo .)org \
--cc=nick.desaulniers+lkml@gmail$(echo .)com \
--cc=npiggin@gmail$(echo .)com \
--cc=ojeda@kernel$(echo .)org \
--cc=peterz@infradead$(echo .)org \
--cc=prafulrai522@gmail$(echo .)com \
--cc=rostedt@goodmis$(echo .)org \
--cc=rust-for-linux@vger$(echo .)kernel.org \
--cc=tamird@kernel$(echo .)org \
--cc=tmgross@umich$(echo .)edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox