From nobody Sun Feb 8 18:15:20 2026 Received: from mail-oa1-f45.google.com (mail-oa1-f45.google.com [209.85.160.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1907A32E72C for ; Wed, 4 Feb 2026 22:44:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.45 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770245043; cv=none; b=f+dyWj/Iq8Ka5Z9rzwzk/H+jMt5CMgMl+iMvAfWr/ko9wcN25DMwubCRoOr/RlET/ce9zkA7CH7ZXV/s2z06WdfPDWEo+UAZp02o/5jt3BYUQ0c6kIsZyOKFse1IPwDFVpCWguR+a7BzKrsycsjj5U1GKVIVn5V5P/UtsgUh+rQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770245043; c=relaxed/simple; bh=cSSlRBRjRJ8Ns29jUJ5Jam61iOLlFitVs77vnT74bKA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iguUyYt5BRxv1rg3Dp57/u3ifzsK6toEPletomdA1WHaxHDpzY0U/WFbpWagUx693pv9KY8UDfYeiQ/OX49aspTvr02/1Id1arNBzva0Dui8rbG2D3dx3UQs/Zfogvv8PhGeBTXd4abmVFQmH+0xNtARVM5XNN2VmaGu6hcoOQ4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=de+QmWTr; arc=none smtp.client-ip=209.85.160.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="de+QmWTr" Received: by mail-oa1-f45.google.com with SMTP id 586e51a60fabf-408199852c5so339581fac.0 for ; Wed, 04 Feb 2026 14:44:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1770245042; x=1770849842; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=HXYYAkQIYtgJH8avjMGESEihpdp9UD0EHXLRnPGjhdU=; b=de+QmWTredkkXj+AArkdpRGAFklVUAG/1F4mvYPAvGSKJ7OyCbUL8JSHSQd+amueln ebeyLO/+zWYX5kG2cY8sBhLg4h2f2UbdNSxlfiNhF3GYG+NtPwiT6xnf8fSJB5gWkEJG E8tFBRl4+1Q7gEFgrMWO5ut1xX5zvRANIL7z8u9/KOxPJAz82C/Y7qLpoLNC7JwSTFPB RHAonpxP8dbhpmq8uxbucLOd6AkWUjHCicZSUDe7BgtOGD6pjZ2qXwDtTXnjwqJY5ero IXH8hov/7VrlIRz0UrKow4AHPkC1quCp246eEzw0wQDrFBSsGauIXEua8tIlSpNDx+Nr zXmQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770245042; x=1770849842; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=HXYYAkQIYtgJH8avjMGESEihpdp9UD0EHXLRnPGjhdU=; b=A6vJJzLgUmXmpk4dDmIYsMW81QSOCACBle8BV32wvQDvKY1A6kirtMimBc5SYaEnkJ edcj8x7H3w7vxrFkTXJi1r1nUqGsni9vFLAYHSFYL7Mb7sbgUJ7B2EX/A4BGzFqQa1IV BnfbGhhgnVcyfBiYPfnh9Jv8fkRxKLE53h+HipCBRXOPaaeAQ4XeYvKVJBE6YgxB9Rdf bub2UuVAF307LrkpME/r6bHp+WtgKPiU94nEtiXk0Fv/gvDBmbxBNj1J0EUNUAh4JTAy lQnBAmaCSWxc8bwC0QfNmaurl27L0Tbsdi69gp4AZ80aa1ET7CyEhO+EW87mFAoZOeHf 4Qsg== X-Forwarded-Encrypted: i=1; AJvYcCXmHhd8tq4Pe/FWASpPXCN88FDc1A5N9u8Y1ZSR/T9vvBRgoStk9RHUl9WWZ4EbCC+VBU5PWfTNNuREPz8=@vger.kernel.org X-Gm-Message-State: AOJu0Yx6tTDt4Yb2/gl9X7QEHgKOaHyfKmiYMywFBi4XtDWO9PNFwx2g JQV0fYbdXAeMzNd19A86DBlOeZ/5gRYuFFFzSWwMbUHnVAO3aTynJorQmcl5XA== X-Gm-Gg: AZuq6aI4DZ1aKgqLSxESB8GfVNLyOTbKXIJ75HqhOMZGwXLza5UcldwqfKnDk6Z2sPa bJ62J7meGkMGlJ+QYDc9HW1ziNpS+hiNw3VKLAot8DlvHQPeQcbgBSJnU3wqgx0EdMRQkOM3G6l m7l1vl69948I3+aZt9KFvVHVDxRky69kdJOl2D/dbJrSDaZ/q0HTBtwrDwejIOMEtNR9mntewkK 8f0Y1X/x0dNwtV6QdaTSlAgDuG/3Tcd0Yr2vARxAgv4JLL9ZMDLFjWTH0XmfirV3BEud0V3FCsp UFVu93s9UTJJ+WQe7AZLoP0/CMrsq1uwWkn3IxkUjimXPZiVGdM8a1CqfyMFui9r9p+e0jSSqQw wA0qso9gs8/Nh3xPSa5z0k+nY8koXZaApqk2NYmpMVMUQZMoPG+zYT7QjbU5gkwvt6bETrEpTAw JHV1FeSu9BQk+3mfhXPsdtH1nIAbLPz2BLEPyC+w+6/b+SPg6zH2QGHCQiaKTQ9WE2 X-Received: by 2002:a17:90b:2f47:b0:340:c060:4d44 with SMTP id 98e67ed59e1d1-354870f8750mr3428377a91.14.1770238953409; Wed, 04 Feb 2026 13:02:33 -0800 (PST) Received: from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.ibm.com.com ([106.51.164.193]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8241d1bd466sm3277977b3a.20.2026.02.04.13.02.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Feb 2026 13:02:33 -0800 (PST) From: "Mukesh Kumar Chaurasiya (IBM)" 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)" Subject: [PATCH V2 3/3] powerpc: Enable Rust for ppc64le Date: Thu, 5 Feb 2026 02:31:25 +0530 Message-ID: <20260204210125.613350-4-mkchauras@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260204210125.613350-1-mkchauras@gmail.com> References: <20260204210125.613350-1-mkchauras@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 =3D "he= llo, world" [ 843.410977] rust_print: Arc says 42 [ 843.410979] rust_print: Arc says hello, world $ sudo rmmod rust_print [ 843.411003] rust_print: "hello, world" [ 888.499935] rust_print: Rust printing macros sample (exit) Signed-off-by: Mukesh Kumar Chaurasiya (IBM) Reviewed-by: Christophe Leroy (CS GROUP) Reviewed-by: Link Mauve Tested-by: Link Mauve --- Documentation/rust/arch-support.rst | 2 +- arch/powerpc/Kconfig | 2 +- arch/powerpc/Makefile | 9 ++++++++- rust/Makefile | 9 ++++++++- 4 files changed, 18 insertions(+), 4 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..c5dd03713af2 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -283,7 +283,7 @@ config PPC select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RELIABLE_STACKTRACE select HAVE_RSEQ - select HAVE_RUST if PPC32 + select HAVE_RUST if PPC32 || (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 +=3D $(objtree)/arch/powerpc/lib/crtsavres.o endif =20 -KBUILD_RUSTFLAGS +=3D --target=3Dpowerpc-unknown-linux-gnu +ifdef CONFIG_PPC64 +ifdef CONFIG_CPU_LITTLE_ENDIAN +KBUILD_RUSTFLAGS +=3D --target=3Dpowerpc64le-unknown-linux-gnu +endif +KBUILD_RUSTFLAGS +=3D -Ctarget-feature=3D-mma,-vsx,-hard-float,-altivec +else +KBUILD_RUSTFLAGS +=3D --target=3Dpowerpc-unknown-linux-gnu +endif =20 ifdef CONFIG_CPU_LITTLE_ENDIAN KBUILD_CPPFLAGS +=3D -mlittle-endian diff --git a/rust/Makefile b/rust/Makefile index ae22f2c5f0b3..c3961fd0d9a4 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -392,10 +392,17 @@ BINDGEN_TARGET_x86 :=3D x86_64-linux-gnu BINDGEN_TARGET_arm64 :=3D aarch64-linux-gnu BINDGEN_TARGET_arm :=3D arm-linux-gnueabi BINDGEN_TARGET_loongarch :=3D loongarch64-linux-gnusf -BINDGEN_TARGET_powerpc :=3D powerpc-linux-gnu BINDGEN_TARGET_um :=3D $(BINDGEN_TARGET_$(SUBARCH)) BINDGEN_TARGET :=3D $(BINDGEN_TARGET_$(SRCARCH)) =20 +ifdef CONFIG_PPC64 +ifdef CONFIG_CPU_LITTLE_ENDIAN +BINDGEN_TARGET_powerpc :=3D powerpc64le-linux-gnu +endif +else +BINDGEN_TARGET_powerpc :=3D powerpc-linux-gnu +endif + # All warnings are inhibited since GCC builds are very experimental, # many GCC warnings are not supported by Clang, they may only appear in # some configurations, with new GCC versions, etc. --=20 2.52.0