From: "Mukesh Kumar Chaurasiya (IBM)" <mkchauras@gmail.com>
To: linkmauve@linkmauve.fr, ojeda@kernel.org, boqun.feng@gmail.com,
gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org,
a.hindborg@kernel.org, aliceryhl@google.com, tmgross@umich.edu,
dakr@kernel.org, corbet@lwn.net, maddy@linux.ibm.com,
mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org,
peterz@infradead.org, jpoimboe@kernel.org, jbaron@akamai.com,
rostedt@goodmis.org, ardb@kernel.org,
rust-for-linux@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Cc: "Mukesh Kumar Chaurasiya (IBM)" <mkchauras@gmail.com>
Subject: [PATCH V4 3/3] powerpc: Enable Rust for ppc64le
Date: Mon, 9 Feb 2026 16:24:56 +0530 [thread overview]
Message-ID: <20260209105456.1551677-4-mkchauras@gmail.com> (raw)
In-Reply-To: <20260209105456.1551677-1-mkchauras@gmail.com>
Enabling rust support for ppc64le only.
Tested on powernv9:
$ uname -rm
6.19.0-rc8+ ppc64le
$ sudo modprobe rust_minimal
[ 632.890850] rust_minimal: Rust minimal sample (init)
[ 632.890881] rust_minimal: Am I built-in? false
[ 632.890898] rust_minimal: test_parameter: 1
$ sudo rmmod rust_minimal
[ 648.272832] rust_minimal: My numbers are [72, 108, 200]
[ 648.272873] rust_minimal: Rust minimal sample (exit)
$ sudo modprobe rust_print
[ 843.410391] rust_print: Rust printing macros sample (init)
[ 843.410424] rust_print: Emergency message (level 0) without args
[ 843.410451] rust_print: Alert message (level 1) without args
[ 843.410477] rust_print: Critical message (level 2) without args
[ 843.410503] rust_print: Error message (level 3) without args
[ 843.410530] rust_print: Warning message (level 4) without args
[ 843.410557] rust_print: Notice message (level 5) without args
[ 843.410594] rust_print: Info message (level 6) without args
[ 843.410617] rust_print: A line that is continued without args
[ 843.410646] rust_print: Emergency message (level 0) with args
[ 843.410675] rust_print: Alert message (level 1) with args
[ 843.410691] rust_print: Critical message (level 2) with args
[ 843.410727] rust_print: Error message (level 3) with args
[ 843.410761] rust_print: Warning message (level 4) with args
[ 843.410796] rust_print: Notice message (level 5) with args
[ 843.410821] rust_print: Info message (level 6) with args
[ 843.410854] rust_print: A line that is continued with args
[ 843.410892] rust_print: 1
[ 843.410895] rust_print: "hello, world"
[ 843.410924] rust_print: [samples/rust/rust_print_main.rs:35:5] c = "hello, world"
[ 843.410977] rust_print: Arc<dyn Display> says 42
[ 843.410979] rust_print: Arc<dyn Display> says hello, world
$ sudo rmmod rust_print
[ 843.411003] rust_print: "hello, world"
[ 888.499935] rust_print: Rust printing macros sample (exit)
Reviewed-by: Link Mauve <linkmauve@linkmauve.fr>
Tested-by: Link Mauve <linkmauve@linkmauve.fr>
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Signed-off-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>
---
Documentation/rust/arch-support.rst | 2 +-
arch/powerpc/Kconfig | 1 +
arch/powerpc/Makefile | 9 ++++++++-
rust/Makefile | 8 ++++++++
4 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/Documentation/rust/arch-support.rst b/Documentation/rust/arch-support.rst
index e26a94808e97..627471ac9238 100644
--- a/Documentation/rust/arch-support.rst
+++ b/Documentation/rust/arch-support.rst
@@ -18,7 +18,7 @@ Architecture Level of support Constraints
``arm`` Maintained ARMv7 Little Endian only.
``arm64`` Maintained Little Endian only.
``loongarch`` Maintained \-
-``powerpc`` Experimental 32-bit Big Endian only.
+``powerpc`` Experimental 64-bit Little Endian. 32-bit Big Endian.
``riscv`` Maintained ``riscv64`` and LLVM/Clang only.
``um`` Maintained \-
``x86`` Maintained ``x86_64`` only.
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 17db23b82e91..954af27e10c5 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -284,6 +284,7 @@ config PPC
select HAVE_RELIABLE_STACKTRACE
select HAVE_RSEQ
select HAVE_RUST if PPC32
+ select HAVE_RUST if PPC64 && CPU_LITTLE_ENDIAN
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 9fd82c75dcbd..f93816ddc036 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -61,7 +61,14 @@ else
KBUILD_LDFLAGS_MODULE += $(objtree)/arch/powerpc/lib/crtsavres.o
endif
-KBUILD_RUSTFLAGS += --target=powerpc-unknown-linux-gnu
+ifdef CONFIG_PPC64
+ifdef CONFIG_CPU_LITTLE_ENDIAN
+KBUILD_RUSTFLAGS += --target=powerpc64le-unknown-linux-gnu
+endif
+KBUILD_RUSTFLAGS += -Ctarget-feature=-mma,-vsx,-hard-float,-altivec
+else
+KBUILD_RUSTFLAGS += --target=powerpc-unknown-linux-gnu
+endif
ifdef CONFIG_CPU_LITTLE_ENDIAN
KBUILD_CPPFLAGS += -mlittle-endian
diff --git a/rust/Makefile b/rust/Makefile
index ae22f2c5f0b3..14febe9c7643 100644
--- a/rust/Makefile
+++ b/rust/Makefile
@@ -392,7 +392,15 @@ BINDGEN_TARGET_x86 := x86_64-linux-gnu
BINDGEN_TARGET_arm64 := aarch64-linux-gnu
BINDGEN_TARGET_arm := arm-linux-gnueabi
BINDGEN_TARGET_loongarch := loongarch64-linux-gnusf
+
+ifdef CONFIG_PPC64
+ifdef CONFIG_CPU_LITTLE_ENDIAN
+BINDGEN_TARGET_powerpc := powerpc64le-linux-gnu
+endif
+else
BINDGEN_TARGET_powerpc := powerpc-linux-gnu
+endif
+
BINDGEN_TARGET_um := $(BINDGEN_TARGET_$(SUBARCH))
BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH))
--
2.53.0
next prev parent reply other threads:[~2026-02-09 10:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-09 10:54 [PATCH V4 0/3] Rust support for powerpc Mukesh Kumar Chaurasiya (IBM)
2026-02-09 10:54 ` [PATCH V4 1/3] powerpc/jump_label: adjust inline asm to be consistent Mukesh Kumar Chaurasiya (IBM)
2026-02-09 10:54 ` [PATCH V4 2/3] rust: Add PowerPC support Mukesh Kumar Chaurasiya (IBM)
2026-02-09 12:02 ` Miguel Ojeda
2026-02-09 12:29 ` Christophe Leroy (CS GROUP)
2026-02-09 12:48 ` Miguel Ojeda
2026-02-10 5:27 ` Mukesh Kumar Chaurasiya
2026-02-10 9:17 ` Miguel Ojeda
2026-02-10 9:42 ` Link Mauve
2026-02-10 9:53 ` Miguel Ojeda
2026-02-10 5:11 ` kernel test robot
2026-02-09 10:54 ` Mukesh Kumar Chaurasiya (IBM) [this message]
2026-02-09 11:52 ` [PATCH V4 3/3] powerpc: Enable Rust for ppc64le Miguel Ojeda
2026-02-10 5:29 ` Mukesh Kumar Chaurasiya
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