From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f170.google.com (mail-pf1-f170.google.com [209.85.210.170]) (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 C26742C9D for ; Fri, 17 Apr 2026 15:23:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.170 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776439437; cv=none; b=laMzeYbCBzn74pqa+0ulhOkM67lOGpq9r2z34ksn7si1PJkC+Jk8U2x8hU3m9vXXSMV98RqucVzZbnMXTX4gc8wXSHYnxCVGlivhx2JHvx8FaDttrPp7Bz1LlboslK7Ge3ZU5xGuG9rO/OXrUz63LMdwEQYxPwwFo0926H9xRjg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776439437; c=relaxed/simple; bh=pYf+H/saGpsBMW8EFfQgaezWo01ragM5sMbBA4ndTm0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=adEI7UcWYsEaskRjfa0cMvrSN6PqKmStLSu/sKqamCMOhjwbo2Jhp/b0wtRU7qTuTzaMnw1jis326mfjaJ76nIcdYj0Vb7H1WvauZTyCQZPm3fkZUA7ex38N3EVxfBLtN7gk+CFsD4pfU64NLyF0hZCKzWjnpTdXB2WiyXTMkek= 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=EhhsbqFN; arc=none smtp.client-ip=209.85.210.170 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="EhhsbqFN" Received: by mail-pf1-f170.google.com with SMTP id d2e1a72fcca58-82cd5c07f93so359419b3a.1 for ; Fri, 17 Apr 2026 08:23:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1776439435; x=1777044235; 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=ww02/jkdVLSyp8HOStmgEIcppt5LBeLhIRfQtuTFtSY=; b=EhhsbqFNIFHbTGyusyCpLuG5uRbZgt8Ntan+nPEj9jBfPhSdn1mzPAbcaNX9YPXzwG gKa+LBHWpwedp2cp+e++7ImHdaCt6Trwq3D93b5N1e+vtlq/hd1x0h0zIkVxuZ/P4L54 4D/QFqQikhVbMZLHqxBIKNd7FqETm7OCGsH3s8+S27F0a67/9ZZnhcQRkCHgIIfvS1ns yw9R4EriPmS7tpdEdUG4uE7/DuXDYVB3ZFUP1OP5FnTsItTgo2Ow23/iIKNmqZBouyMg k94WODlcgD1puvTGHr8UwKjQrkwVOkuPxbBOAbsO1MlmK7oB/2AwKWw4siyrGq0+Qd+o U97A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776439435; x=1777044235; 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=ww02/jkdVLSyp8HOStmgEIcppt5LBeLhIRfQtuTFtSY=; b=Ld4LCezDgydrlUxyl5aMJw1d1G5amLdgulHaVi8Qh6/mBQw/0LeogxAAJpEdp4Z9C/ ScRFk/6JcaQdQqNi7qgFcg4IG5VsakJitTY+60ajuGJmx+hLLXWAcc2cwZqjBEhnNTLU 5WbT45p8kJRMfdA9XB27zg+p50EUsT4o27Ub3WC2AT8E0Tw3q7HpMZW8mBAU/oAhuwft JCy9hpA3Tm6GG+ft5mu2Yins9YHdKiu48DckI5PbY4b4NwO6Q6jsJZURm83jtwtQTro7 ykr2tGVkqOrwnGcNulO8qgsuv1Acns7obczqk5LBHzdZkMz9ZEFRfNvC/JlGBDDywoF3 95ZA== X-Forwarded-Encrypted: i=1; AFNElJ95ppzRYovJY7Q7qIvCBGOsOwLeTabWcfRL1sP7z4e1JfntwBryGbBNTiaVNGOEi04VOxU4xN9KeLSc8OSt4g==@vger.kernel.org X-Gm-Message-State: AOJu0YzfM1zxrMWHNfszNkZODNO4z9U7wcgfMV6blN4qD9PEzUbVGmWr MIpsO+OOXGZLF11TCw+67fGqWkX1b8/f70ntIs1pGNjGlvO2rTeZc/S4 X-Gm-Gg: AeBDieuWNxAoxHUUYv4xa77daylF1MdQq2h+11ZDE0yw6mTq2vciKN9IPm1fj4923kk 9yQRhhocHpofkxHda4zQcmQ8omj27VD5kBNeNOskSyIdvbg7gRH4iGpgsNnQkewLOJkrQKLEQfy ZCV2dj+5Lv7iNoLWg8XmpzBQyArU0NYme4R2JWWBuZQMq7Rro32zQPL/kvWxDuPTnJCaW40Mz36 zS1wuTKT12JytBoS2p1JXB4uUuX/2UDVs1dJ6ZblT1gpTg1nMksUCjDy6WHldaKzeKsAHeyQh2t vSFl+4j9R0o9i8Jz3b5OwhwMAXoajALBUi8zjGRV7A3oFnFjTU63hrLzpswNL8q/O6QNYaqgHT7 ZpviyGojPHml1KlwnLRH/hwEc7MnVfblG4LLQkQbN5lhQHjLrBic57WGi71ikCsz1tEMUCVR4U1 jYTqNPEM8xkYMhvQr/tRILMJXtGktHoreiKRofwRBblHZYLg6Pz/ruCo5oNMc0Wgusd8uHpImfo MrW5YnfceOjDsM= X-Received: by 2002:a05:6a00:a883:b0:82c:e09b:3f76 with SMTP id d2e1a72fcca58-82f8c9b6728mr3532095b3a.41.1776439435073; Fri, 17 Apr 2026 08:23:55 -0700 (PDT) Received: from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.ibm.com.com ([106.51.164.157]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f8ebb3829sm2384373b3a.31.2026.04.17.08.23.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Apr 2026 08:23:54 -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 V11 3/4] rust: Add PowerPC support Date: Fri, 17 Apr 2026 20:52:52 +0530 Message-ID: <20260417152253.2312961-4-mkchauras@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260417152253.2312961-1-mkchauras@gmail.com> References: <20260417152253.2312961-1-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 e234b8a39358..af0c8ab2e5b6 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -406,13 +406,15 @@ 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