From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F35CAC433F5 for ; Thu, 21 Apr 2022 07:47:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1386167AbiDUHuY (ORCPT ); Thu, 21 Apr 2022 03:50:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1386230AbiDUHuO (ORCPT ); Thu, 21 Apr 2022 03:50:14 -0400 Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3DA7C1CB18 for ; Thu, 21 Apr 2022 00:47:02 -0700 (PDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4KkV4217nTz4xR9; Thu, 21 Apr 2022 17:46:58 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ellerman.id.au; s=201909; t=1650527220; bh=6Zuyw245iK0ZvmsIInOVF3tD0phZx7klr4ZSZDE0lfk=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=gvMx8c1mKZEk9360t6GcgeT3JWfOTmnYz6GvFDessBmf39sJEx44Q0Z+x1hpFTrWy t4auQPIRwi6TLOC5KSsg8QKX3p9zEXuShyq0uHBYu1erlGHlaMvzSTd0+fj7RWiYgU tCzURkRfAPImrkXcC+sBl+rheKPkeC/rMcEJM3EKRQvK2lB4MuBgaPGGYpPPbVTHfA it8ioLrKDEww3YE+8lIiJlY2K/OnNQ2eKwRmuZIRJLwcYGC9rXuKHeESQprOyINdKY 7lCkeruyA9hybz/N8O7uCdsQXVrHra8+jOKydxL26BYWOsvAHnHDfhh6wid+ljGafu 32UOBCm0c47oQ== From: Michael Ellerman To: Nathan Chancellor , Greg Kroah-Hartman , Sasha Levin Cc: Nick Desaulniers , Tom Rix , Paul Menzel , stable@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, llvm@lists.linux.dev Subject: Re: Apply d799769188529abc6cbf035a10087a51f7832b6b to 5.17 and 5.15? In-Reply-To: References: Date: Thu, 21 Apr 2022 17:46:52 +1000 Message-ID: <877d7ig9oz.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Nathan Chancellor writes: > Hi Greg, Sasha, and Michael, > > Commit d79976918852 ("powerpc/64: Add UADDR64 relocation support") fixes > a boot failure with CONFIG_RELOCATABLE=y kernels linked with recent > versions of ld.lld [1]. Additionally, it resolves a separate boot > failure that Paul Menzel reported [2] with ld.lld 13.0.0. Is this a > reasonable backport for 5.17 and 5.15? It applies cleanly, resolves both > problems, and does not appear to cause any other issues in my testing > for both trees but I was curious what Michael's opinion was, as I am far > from a PowerPC expert. > > This change does apply cleanly to 5.10 (I did not try earlier branches) > but there are other changes needed for ld.lld to link CONFIG_RELOCATABLE > kernels in that branch so to avoid any regressions, I think it is safe > to just focus on 5.15 and 5.17. I considered tagging it for stable, but I wanted it to get a bit of testing first, it's a reasonably big patch. I think we're reasonably confident it doesn't introduce any new bugs, but more testing time is always good. So I guess I'd be inclined to wait another week or so before requesting a stable backport? cheers