From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f46.google.com (mail-pj1-f46.google.com [209.85.216.46]) (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 A86D0320A37 for ; Sat, 4 Apr 2026 12:16:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.46 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775305017; cv=none; b=DEHFzARxLNTtl1x2Ou1BmyqmR2NLscADS3m45b1XVE6yCVwssYSJv4hWfgbjzrzlAZBjFG1nN/4jFX5+cZCCRD3KImsuKaXexWRvEipEHMN3fo7bqhkXtP4892Quf5tlU9tqtGgC1mNM1llulznmQDslH/7hvHoMFNZbyQ/rpL0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775305017; c=relaxed/simple; bh=3bfhmI0iIl4U5PndejMek+59b5mJkP37SyrMSjgmwFw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=MKflyqBOD/syOC5bY1yvsvnrCX5aWdb4gUkqMrl5jmSRD4tvNGBGLVWcJs72U66gH+DWfWsvDMWqiHunuyYkIKl6n5A8SLiJ4tXVJB4E5taZbOasVOXvtfDdrfD5tsGj/biiiYV+4yT01U6QE3D9V3HSRGkq0ZgQImRdKzIN2+w= 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=ECdVNl0l; arc=none smtp.client-ip=209.85.216.46 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="ECdVNl0l" Received: by mail-pj1-f46.google.com with SMTP id 98e67ed59e1d1-35c2fe0d90fso1539898a91.1 for ; Sat, 04 Apr 2026 05:16:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1775305016; x=1775909816; 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=BKm0GCc95U5yVYTop7PGOFzPahS1W34+eH7uQUagHv4=; b=ECdVNl0lyTskdlFoC7nJM6z8dvMLEVDyP8hAueI8TN6xJpW/ROShOp4hWEFvYEukC1 KjtJYzpy+S9EaKnFsv2/IyR68MOhGYte2NwKDwjp759JcAAdoNeTyLOFnsTAME3DvNny BxqnO3cyuAdiUfMeU3c3uuU38bH4G1tyXrM7tn+voVfmZlXYNJzi1RKXw9yaGf26YKtG 1CkKfZpnngm7zfKNMcqOtaG+iQDfexb+pB9nRk+iIXmLxPqXmhWYnGYAg3g6IC9XcTAl c8BP2xUn2WmykNC6gHhlZrTYk8VmBY4IzubRQ9bYuS0HmbHcsB2i8BQNJAwQDZjdvJ/q biJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775305016; x=1775909816; 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=BKm0GCc95U5yVYTop7PGOFzPahS1W34+eH7uQUagHv4=; b=VLMkd3l5Xofjs7wNqdNWkseGw+a0fsO1UvMlJVRvnwtBlyDVUzg7hSZ5Af7Rab/Ddl sTgbNke610Rd+SOv4m+YUhFF4cFP3iAOaKbtsFA+6sCv3ANuRJh8cVkexVFn7LWkx2OK Dx/GCccGS9MX2pbg2dmauggwb47JwFKH+lZvO6XOvLejZ77aqF2q7ZJaNvOcBUo9wLS/ DSGvYIubrJOO0K1v/VTTJ61zC+lB+BajvGMRGwQ3T/jZ+P/K0f3Wu9yEzTAJpFYAbrUr Rhks6Xtj0HcMP5TWPgUBW95whvJZFs4/Tk1b40aJk0YZd991NJV5ZGWNauTyTBq8libR z+hQ== X-Forwarded-Encrypted: i=1; AJvYcCXJ3sQ4JhU6aaVVx6PMD/s9nPYUMw6h/sR5vMT/anS03VUOetoZBtx9lJ66+/2XfqVSeUvNg/fovQyIN2/JAQ==@vger.kernel.org X-Gm-Message-State: AOJu0YwYRgJzlLsBrrfKfnYAfObDpfKdpjfIJ8oPn/yJmKvR1w+QJ8DC yeJrewT03QG31RTxkdNzZaymVynyb64iclttLeOSUnXhSqQ+msVaapct X-Gm-Gg: AeBDieusO3iJrhEaNw/bfXdU0hY/wOEONmW2e5VOglCyXv6/bvcq8NotztwRNA8DYmV uKLbs38pxWbxiBVlS1NvjzE0g2Nij+Z3/zk6xv4CxUpd0fqcmIcWMMHNUFUQNxl6ZA95t8xzjv/ efCtq8zSoybAdTGv1leZpqipZ4W9aGWCDWjFUD38QGMcyONHRAPiUfVg7pG3JeqNv3LnP5GdIdg k6qZM/UlabfMfk6v9Llq5t4gk90O9vntgzWzInVgQdZoVSQScizOo4MP/39nFVjulbWdhIe+RsT 5QuXEgM/aLgRbfIJJqJ3g8R0D0uxJPmUK7Yobneg7CNRPNH/M+cM6RGttLBCTQELByBH1gWkPrb 0FvPtGCTTUbQMjbqZ/ckQrX/JW70TMfPU0XH0WOI2vVcYt/5qDq6i753lo7QPY2pdswf/xpEDdE kVkYa7ShLsDwtz+KKDhZ5MSytVS/T6YLGeUXMShhQN9UCc4YZSnNMmYGxOUUDGKqdKSdxjCafI2 Hk= X-Received: by 2002:a17:90b:2888:b0:35b:9894:f6f9 with SMTP id 98e67ed59e1d1-35de68f7f89mr5794773a91.18.1775305015943; Sat, 04 Apr 2026 05:16:55 -0700 (PDT) Received: from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.ibm.com.com ([106.51.160.44]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35de500c42fsm2702745a91.0.2026.04.04.05.16.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 04 Apr 2026 05:16:55 -0700 (PDT) From: "Mukesh Kumar Chaurasiya (IBM)" 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, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, llvm@lists.linux.dev Cc: Link Mauve , "Mukesh Kumar Chaurasiya (IBM)" Subject: [PATCH V9 3/4] rust: Add PowerPC support Date: Sat, 4 Apr 2026 17:46:09 +0530 Message-ID: <20260404121610.1956528-4-mkchauras@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260404121610.1956528-1-mkchauras@gmail.com> References: <20260404121610.1956528-1-mkchauras@gmail.com> Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Link Mauve 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 Link: https://github.com/Rust-for-Linux/linux/issues/105 Link: https://github.com/linuxppc/issues/issues/451 Signed-off-by: Mukesh Kumar Chaurasiya (IBM) --- 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 10240cb80904..1246b3add8ff 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -284,6 +284,7 @@ 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 5f726a332d9e..04d8a849c6e4 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -410,13 +410,15 @@ 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 BINDGEN_TARGET_arm64 := aarch64-linux-gnu BINDGEN_TARGET_arm := arm-linux-gnueabi BINDGEN_TARGET_loongarch := loongarch64-linux-gnusf +BINDGEN_TARGET_powerpc := powerpc-linux-gnu BINDGEN_TARGET_um := $(BINDGEN_TARGET_$(SUBARCH)) BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) -- 2.53.0