From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f47.google.com (mail-pj1-f47.google.com [209.85.216.47]) (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 3C95C22AE65 for ; Sun, 26 Apr 2026 08:58:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777193938; cv=none; b=iQS+Hz9GWF+D+qNpb11XX2VnfNSRCYWT3i2decuPnTbMwBIzDzfAFIhAe9O/hzbMc8m0Wh+5RBqPQm7x9wBsY3UCSFyQNZfjMX26kdbntj56+phaN92bxlOMnASaChHMz+FGJqVJmoDDByWfFrTIgUM6bJ22vv/Cc48aN1B92rg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777193938; c=relaxed/simple; bh=WhlwkXNuyZCQ6C5N8eUhev/OuBv5UthRFAKgfmLfnq0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ppwYHyCZ1k0Koi7ukUNZPJRIXeqLCHtbHaxVCNJLyVe8wNtfL7C58exgpB6VX2QutWZwtDfelu7pQTubJBFX1lERpTULIJKSSkR7sADnaBObR6G5BLHQGBGpTc0kdSDlt3LQPEfp/AKIP2LcYH3CtI73QgsPkTpmiva1DTtrOdA= 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=NG7Yexli; arc=none smtp.client-ip=209.85.216.47 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="NG7Yexli" Received: by mail-pj1-f47.google.com with SMTP id 98e67ed59e1d1-3567e2b4159so6231354a91.0 for ; Sun, 26 Apr 2026 01:58:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1777193937; x=1777798737; darn=lists.linux.dev; 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=AMHiysWjfyDRuRD5lpg8f9BCP2bUjUGrNK0xtp2jPK8=; b=NG7Yexli6g3a+eHaJIQyJNQ2NPqfreUVdEpFn+1ukxiKPxJ4/pOC815u/GCzWBBCPd kDt5kidrBvZxJBkrNKYv4S11uxrvQfa0EhYoyaf+XK4X6CVRXH2E4ZjnMH/ZD93gMhmn R7GRciTYlm4eAUbenxVd7hM4ywymCk5wNTdmLwE6H1mAnLjKjpUbLws/4xyukfxRBsVB bbkTC59hcYsxVfzulgXbGBTuUMxXetN65vN+zd39MKTBQ9+Vhmg06sqLLeKLKS65iAIp Ybe+a8rjlyMVYUZLi3WNa2eskWG45HaOxF62wDsjJ3ZyVlvRe4A/n2UrTf0t6ljkPwWA f7Og== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777193937; x=1777798737; 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=AMHiysWjfyDRuRD5lpg8f9BCP2bUjUGrNK0xtp2jPK8=; b=TlqdLQPDNF8gF44z2dcindjBnKk5pAHnWtd/R1vXqu30yZseJF6ePlnIgdRCSbnZMf 5cWgxaAtePuc8j4KvUEJZomnFIN2ip9RA8G2iUrq1WeSnxauhM3edpKo72iE8cnhmhOd NIR+TskNkUAGTt0b8GW6DqGO1Mx07AKDwyeLZLVGL0PJCCKuZ2qx40wP5d4eRtR3h8nJ Vmy9sLzJDy+vp8y3Xzf5jlGKiPR7GIvhMMNQj+ZtKE4/9YlH0AjRnyDSHd6t9A50QWdy teZbUvZHIuDHE+dyUg3XmaFQphAnsl4IiSp3qJgB19lINwFXmfwhuF5NJGTGSh7jYq/z Vb3A== X-Forwarded-Encrypted: i=1; AFNElJ9WPvHKR9SCHLAQO6pIDvKZaq7+CkEvpos9iPQ/EyOpUJQQ53Mski1Y1BumMrXvkdanGH/U@lists.linux.dev X-Gm-Message-State: AOJu0YxcTBL7tRtUjgsauuWCMyZpkHI5UKhyfp4JKYc6RTrDuWJADS3/ cvilsgWg9GO8SJVaWDBqBpCwvnbCgWh5mlfnWfeipQKjANZKGM7/FtZD X-Gm-Gg: AeBDieuXKByoc3381GzRFzJhIkimdeDlCG4Ly3iRvXa6PPYWs3JMF10MTu5vnN47KeD WUSFvOP7MymeF+0eACrg3raat+5QnfiREydlmyhC/Dn4s8a45ARuO/05xNAyaG/S6k/AJFiAg2o IIHB46k6iUchmj0G22kOex8MjhlXQAUovAcFDYq7ghmBk9Kt5YMaPtTmnlACUW/gSFJ2h/6kX/J zW7DFRLQgU0oaKs1cZm4OJaqQNvcVcX1GLJdgYzJy1fxc3Z2znVvINlGRjIyi5rUVYHViITL5xQ L4WfVwwze8NFhYHfLrn1lBeFW+CnHymHv45B5Fg+6dMrL3/NWnI36QQuXNf7I2BpbU0u7dG5X2b ssJahfg02Cut8KDwm5Ua/oLkYH4D161z9jpbHQMApCzkFDUBs/+mffHh6jL/deFwBzqQYGxZgmn V0wJbzGVEfFtbcnS81ABWI9U21Bvebo0xFYsQRX7cvV0MCCeIjOg4cqhbHsWNw5D7HngtwZTbgG kAUOB/Xw8gzY7I= X-Received: by 2002:a17:90b:1809:b0:359:15c8:e8e1 with SMTP id 98e67ed59e1d1-361404a8241mr39217733a91.25.1777193936535; Sun, 26 Apr 2026 01:58:56 -0700 (PDT) Received: from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.ibm.com.com ([106.51.164.157]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-36141868906sm27718937a91.3.2026.04.26.01.58.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Apr 2026 01:58:56 -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, daniel.almeida@collabora.com, fujita.tomonori@gmail.com, viresh.kumar@linaro.org, prafulrai522@gmail.com, gregkh@linuxfoundation.org, arnd@arndb.de, tamird@kernel.org, mkchauras@gmail.com, lyude@redhat.com, airlied@gmail.com, j@jannau.net, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, llvm@lists.linux.dev Cc: Link Mauve Subject: [PATCH V14 6/7] rust: Add PowerPC support Date: Sun, 26 Apr 2026 14:27:24 +0530 Message-ID: <20260426085725.2090827-7-mkchauras@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260426085725.2090827-1-mkchauras@gmail.com> References: <20260426085725.2090827-1-mkchauras@gmail.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev 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 Acked-by: Gary Guo 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 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 9aa18cff2fae..03926a451bac 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -399,13 +399,15 @@ 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