From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f169.google.com (mail-pg1-f169.google.com [209.85.215.169]) (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 DFC4F2D8DA8 for ; Fri, 24 Apr 2026 05:49:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.169 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777009745; cv=none; b=BDsEbvwqxaYbv+SuWoHRXxYZjem9tajkDYY1Q2f4+zdDwDsE1Pb+o3pZNKLIuds6UaGWLB6Z5TDkGall1JzD1xyDCb2meAaUrID3JG4BQbRnBb8KXXbdyKRSty6R1bEX45yt+w7NlUdNM9vgkwxXZ92F+2CuMlc0VnFT396IqTE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777009745; c=relaxed/simple; bh=QL36iCxJvrAKverR2bsI02V8ii8bfBdNBFY2qQ0lS8I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Z+IHnLh0ew91KyzVoT4XHUyhOCAXetdI7k0O7I+A1zpE4nVUziW7Zs/IhP3h/O5tF4gDh7vf571r3U+5E/nRijeoMmlq9HMvVTSvqMZwuvS5MY2ELFuY7Or4mPjqNlv1Ut7XAIIUEL7gglRVFITXuIDYXwBqwNX8Eltk2Oj5w4I= 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=giwRt2mu; arc=none smtp.client-ip=209.85.215.169 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="giwRt2mu" Received: by mail-pg1-f169.google.com with SMTP id 41be03b00d2f7-c76bde70ec9so2958956a12.2 for ; Thu, 23 Apr 2026 22:49:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1777009743; x=1777614543; 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=begHw2Fh55YIAbwVuxIcFKYuQNkyXTaAo0Peazo3t08=; b=giwRt2muKV0aWZwVt68C/tVKGzzH9LcT3/8dgzXSZ4YBO+9F9EOsCDsP+Ox2M7+WHQ RqFy5s6Rbcx4M2OwLjb79iRcKyPfNKGYnbaR3tYrEsKfUuRCXsORvkWE476iv9vbwPn/ z38aEDkXIg9+3V+0+pRi4Khg8Nkum2Fl5a92HNDK+R2DaG5J2pAIGLYB4w9sBm1PrpoQ IqbdD3RIHgMNKUjJ3Pt7NMTiDEEIXpQkOZoRjvQn4NcYIVQWoHbNoSvzyxpJefp1CC1x U21iDffRJ4kOuLIch7PgSB3pO85sAJ/GxCuL/gm5ZI8aySbOLxXiofqZKaEMPfco0T1i XaPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777009743; x=1777614543; 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=begHw2Fh55YIAbwVuxIcFKYuQNkyXTaAo0Peazo3t08=; b=js4GnMU9szyCxhCtymXo1HXFNACzkUEHSdGYHbLbEqAm/PKl0ho5wDz/7l/j9610AL ETW5WQBTUyuDvKmvjCDFz/90I8eQUlTe2KywKHT0f25FHJ3yrfOVUyy2L65xOszo5MUt nwPOhT1JGg3EIb2Q2AbG7ZG/ntG3fXxd3YrutCSR22OQsc0ig2QWNhTqAvQg348rJXok mGG+Lze5QtP1+0jn6xzmGSCS5bC6Tab5EVsIvBBvMglDyLyX7jHB8+3gEV00V2qdFqdL ZtKk4doSQAbJ44g2FYx2fBKkpuiLJKA+nkB803CyXHz+vI0RaoBf0sbVopupSjFkWS5F LWFw== X-Forwarded-Encrypted: i=1; AFNElJ/gZIMSiqZuECparnHR9T+kZn5N5Mp1fucsXe7sjJUP3YdzdTVtnX0V2PwQs6vMAOI1MnlDIa0XB3C1bK4=@vger.kernel.org X-Gm-Message-State: AOJu0YwKSgKlbA00c2fdJBh9fysCyu8zsPGGybOMW7XMSnsDlr1I8Pq1 Kns2QiEKm8/pUsPPP8aGdDvfUKuPQW3E6pHcIMXC5T568x6KH5Lmoc7h X-Gm-Gg: AeBDievh5eX33s5JliK4YG7hERAtlqx0x5dz3GFW/YsB/1MdhFYyyMUM7SFoMFPwx74 jQ1kGsxKcOdqfgKy8pL+sSS7ig77NYVD9SaUVV0SeBjBItHVZzafS9ELf4JOI0MlHuiCYVUkFMS 13c94cUStQIRAcRWPbD70K0vCDY3RzlsDxMk2RUM5mdygmCMS5FK5NEGP9gafM1emsE8AusKfYr tuv/QlxX7o6/KFXIRr5OBL/iVmBw18TdhMXAxDv+3NziYK9hpZNALeNi2R/Kp+1o494KJrvNWgH D+AkwPOF+N/sjM0jLpjAc69/DqA0NuzdMl20uvxvxEhvI2ZD4rgiCbtJsVTlOZn76UrUSWatGWm elR6JshsstYAuONPgDgAyh5slAObuXUPgefQ/43T0BaeJ/9HROljydhGDhkCXniSuDnzRh4J4eV LTkMpnlXS0JdJeJ8IKktUftII003HC5gF2K6uhH9HwnVu5kSZWY145oP5+AWq9f+2PFb3Efmqk8 2Nus/5lDXsWlYY= X-Received: by 2002:a17:903:1a45:b0:2b2:65db:8c5f with SMTP id d9443c01a7336-2b5f9f4f562mr323157805ad.27.1777009743184; Thu, 23 Apr 2026 22:49:03 -0700 (PDT) Received: from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.bl1-in.ibm.com ([129.41.58.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b5faa176e9sm208778245ad.20.2026.04.23.22.48.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Apr 2026 22:49:02 -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, sumit.semwal@linaro.org, christian.koenig@amd.com, 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, tamird@kernel.org, arnd@arndb.de, nsc@kernel.org, mkchauras@gmail.com, simona.vetter@ffwll.ch, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, rust-for-linux@vger.kernel.org, llvm@lists.linux.dev Cc: Link Mauve Subject: [PATCH V13 6/7] rust: Add PowerPC support Date: Fri, 24 Apr 2026 11:17:41 +0530 Message-ID: <20260424054742.45832-7-mkchauras@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260424054742.45832-1-mkchauras@gmail.com> References: <20260424054742.45832-1-mkchauras@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-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 ee11fba7a03d..fd9c1bf026ca 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -400,13 +400,15 @@ 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