From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linkmauve.fr (82-65-109-163.subs.proxad.net [82.65.109.163]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6AA1F439320; Tue, 4 Aug 2026 10:12:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=82.65.109.163 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785838328; cv=none; b=D9VrIMSmZdu1Il/SFTB89Dtv4xEPGvEFCzKT3URxPmPJSBoHUFkqE/kOCx/nJd9DPTi3TDSOrUWOAbQMUuNBqhZVe5Epevzy8yRIFaUA9GnkDd/p+90z6WUfTLnvilPTC8xGWqZz5R2kVyr+B3kezhuerAWV9WScCizXWSiuYp0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785838328; c=relaxed/simple; bh=E6vlVZcAvaRJu2HM3NBQiziSGME76eVY7ZVPFBuh4Pw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=sgKDRtBPhdbmkMP4rlJgJaac380laYxwvEsgYRk3qF1HQue93Ng4ViuxuqnOBK4nJBJBOWA9ugrinWozWG65Q3vMOIcO+OYEp08Ub24k7bfeqwdiwqBo/Hu02rQoNIoCHBssk9WRn/YyxHIxSvqopeY0qdEpKEHpVu7jOkAS0uw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=linkmauve.fr; spf=pass smtp.mailfrom=linkmauve.fr; arc=none smtp.client-ip=82.65.109.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=linkmauve.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linkmauve.fr Received: by linkmauve.fr (Postfix, from userid 1000) id 2B6E970A02F6; Tue, 04 Aug 2026 12:11:57 +0200 (CEST) Date: Tue, 4 Aug 2026 12:11:57 +0200 From: Link Mauve To: Madhavan Srinivasan Cc: 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, daniel.almeida@collabora.com, tamird@kernel.org, acourbot@nvidia.com, work@onurozkan.dev, nathan@kernel.org, ndesaulniers@google.com, morbo@google.com, justinstitt@google.com, fujita.tomonori@gmail.com, joelagnelf@nvidia.com, gregkh@linuxfoundation.org, prafulrai522@gmail.com, nsc@kernel.org, japo@linux.ibm.com, lina+kernel@asahilina.net, j@jannau.net, airlied@gmail.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, llvm@lists.linux.dev, "Mukesh Kumar Chaurasiya (IBM)" Subject: Re: [PATCH V17 0/7] Rust Support for powerpc Message-ID: References: <20260708082454.1254320-1-mkchauras@gmail.com> <178574013457.29744.6211258618175255546.b4-ty@linux.ibm.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=us-ascii Content-Disposition: inline In-Reply-To: <178574013457.29744.6211258618175255546.b4-ty@linux.ibm.com> Jabber-ID: linkmauve@linkmauve.fr Hi, On Mon, Aug 03, 2026 at 12:27:13PM +0530, Madhavan Srinivasan wrote: > On Wed, 08 Jul 2026 13:54:47 +0530, Mukesh Kumar Chaurasiya (IBM) wrote: > > Enable experimental rust support for ppc64le and ppc32be. The patch for > > ppc32 has been provided by Link Mauve[1] and ppc64le support[2] has been > > merged over it. ppc32 needs some toolchain fixes mentioned in the patch > > `rust: Add PowerPC support` and the discussion for that is done here[1]. > > > > This has been tested on > > - powernv9 hardware > > - pseries P11 hardware > > - pseries(9, 10) qemu > > - powernv(9, 10) qemu > > - rustdoc on x86 and powerpc64le > > - rusttest on x86 and powerpc64le > > > > [...] > > Applied to powerpc/next. > > [1/7] rust: Fix "multiple candidates for rmeta dependency core" error > https://git.kernel.org/powerpc/c/00cdfd072c709c608606461d7d44d4613119bfa9 > [2/7] dma-resv: Fix undefined symbol when CONFIG_DMA_SHARED_BUFFER is disabled > https://git.kernel.org/powerpc/c/be809b60cbb61aab96179f44ac3670242ae72996 > [3/7] powerpc/jump_label: adjust inline asm to be consistent > https://git.kernel.org/powerpc/c/13244c0a40139fe66c4c5c5655f4d732a6002957 > [4/7] rust/powerpc: Set min rustc version for powerpc > https://git.kernel.org/powerpc/c/e299147cdc8e19c6421a6b7863dc82a35b09d967 > [5/7] rust: Make __udivdi3() and __umoddi3() panic > https://git.kernel.org/powerpc/c/c93c194e4ee71a734986fd99a8b1ec9fbb7a9b8b > [6/7] rust: Add PowerPC support > https://git.kernel.org/powerpc/c/73b741adb264967093ef4eb59905618a7e0d0de0 > [7/7] powerpc: Enable Rust for ppc64le > https://git.kernel.org/powerpc/c/bc87cbdb952e9223616b839d64bdb4723aa2ed1d > > cheers > I just tested those again in linux-next, with the Wii support series on top, but now the kernel fails to build due to ARCH_WARN_ASM and ARCH_WARN_REACHABLE not being defined on PowerPC: ``` error: no rules expected `ARCH_WARN_ASM` --> /home/linkmauve/dev/linux/wii/rust/kernel/generated_arch_warn_asm.rs:1:28 | 1 | ::kernel::concat_literals!(ARCH_WARN_ASM("{file}", "{line}", "{flags}", "{size}")) | ^^^^^^^^^^^^^ no rules expected this token in macro call | ::: ../rust/kernel/lib.rs:279:1 | 279 | macro_rules! concat_literals { | ---------------------------- when calling this macro | = note: while trying to match sequence start error: no rules expected `ARCH_WARN_REACHABLE` --> /home/linkmauve/dev/linux/wii/rust/kernel/generated_arch_reachable_asm.rs:1:28 | 1 | ::kernel::concat_literals!(ARCH_WARN_REACHABLE) | ^^^^^^^^^^^^^^^^^^^ no rules expected this token in macro call | ::: ../rust/kernel/lib.rs:279:1 | 279 | macro_rules! concat_literals { | ---------------------------- when calling this macro | = note: while trying to match sequence start error: aborting due to 2 previous errors ``` This is in addition to the bindings::kvfree_call_rcu() call, but that one is already being handled in a different thread. -- Link Mauve