From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from outpost1.zedat.fu-berlin.de (outpost1.zedat.fu-berlin.de [130.133.4.66]) (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 4DA2A18BB9A for ; Fri, 25 Oct 2024 09:18:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=130.133.4.66 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729847891; cv=none; b=K6EyuVG8RvIZkHmTHSWvtapqBRqp9ogqe4rSik0cXbgFYFZa0e2Gzhhv+QoOmUqHPZ5FOxzc+i9cLNUl9CSfcMFfnHNOUOHwTrcQMjH5VdP9WBSZZhPHcbK6APq/+N2kgk0/gwVL1rvqxfXmKw9XIQVcbDyjriaH4K5DmIOACtc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729847891; c=relaxed/simple; bh=AJH6hDAWhl3WCTNAieHj9Gtpkj4NpbkXbMKwzWGFRfM=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=OnKaKhK/QQ0R7L2kUL/6qDK8nQ5DNI41YrruJeuvtkgjsX2cx4N3raCc/NZRRK/VQ99qcJ9xE2Nt3fDX8hVU0QSg1EOesFEwSjxcDEe0lHuIhZQexn4jsOwUhrge3Mk7ScctRREYxFjG4V9oNh4gIWHeqq3yOIhsQ1PH9ossAZA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=physik.fu-berlin.de; spf=pass smtp.mailfrom=zedat.fu-berlin.de; dkim=pass (2048-bit key) header.d=fu-berlin.de header.i=@fu-berlin.de header.b=RQwSeYIf; arc=none smtp.client-ip=130.133.4.66 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=physik.fu-berlin.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zedat.fu-berlin.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fu-berlin.de header.i=@fu-berlin.de header.b="RQwSeYIf" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=fu-berlin.de; s=fub01; h=MIME-Version:Content-Transfer-Encoding: Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=WTVLGftvyCjYBAzXskaG5Ptco9BVHYTeZUIym1zreVU=; t=1729847887; x=1730452687; b=RQwSeYIfzfcRigED2ZbHF3SYqs530SHpqA3a2Y8kOFQxYT2wFiLEX3J8r/AscY37pChpLL0SOnl V3WC9hJqzVd9AeYLteOPqxD22BuJ5s0zVAv4BP+TtVOsmH8qRI67wmgWx8fSGuHEtaSrS/Dj509Ie NbNZ8j9HpQ1hg7Adb+1o9tIZLx77gfP99K57DpqJkTjmidTabTaI2I0vxC57zqxXCLpXQBE9W565x dR8JcjIc4oCNIQOSjAdexMkReJQ4zIHGZAWbDn/P6MXNan7CDu2xv7TKIaIuX4zeG+6okLu6cYhC+ TGeWyANtwDP1Dp4z4INOzhX2Moecu35VkROw==; Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69]) by outpost.zedat.fu-berlin.de (Exim 4.98) with esmtps (TLS1.3) tls TLS_AES_256_GCM_SHA384 (envelope-from ) id 1t4GSJ-00000002cdZ-2mdG; Fri, 25 Oct 2024 11:18:03 +0200 Received: from p57bd904e.dip0.t-ipconnect.de ([87.189.144.78] helo=[192.168.178.20]) by inpost2.zedat.fu-berlin.de (Exim 4.98) with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (envelope-from ) id 1t4GSJ-00000003ec2-1rlv; Fri, 25 Oct 2024 11:18:03 +0200 Message-ID: Subject: Re: Plan needed for switching m68k to 32-bit alignment From: John Paul Adrian Glaubitz To: Finn Thain Cc: linux-m68k , debian-68k , James Le Cuirot , Sam James , Geert Uytterhoeven , Andreas Schwab , Arnd Bergmann , Thorsten Glaser Date: Fri, 25 Oct 2024 11:18:02 +0200 In-Reply-To: References: <3a5e171bf42e5273eb8235cba04e8328b19c2ca4.camel@physik.fu-berlin.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.1 Precedence: bulk X-Mailing-List: linux-m68k@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Original-Sender: glaubitz@physik.fu-berlin.de X-ZEDAT-Hint: PO On Fri, 2024-10-25 at 20:06 +1100, Finn Thain wrote: > On Fri, 25 Oct 2024, John Paul Adrian Glaubitz wrote: >=20 > > the m68k port has reached the point where switching the default=20 > > alignment from 16-bit to 32-bit is inevitable as the number of packages= =20 > > affected by alignment issues have become too large. It even includes= =20 > > Python 3.13 these days. > >=20 >=20 > Are there any bug reports you could link to, in support of the "too large= "=20 > claim? The following packages require 32-bit alignment: - mold - LLVM - gccgo - Qt5 (several packages affected) - Qt6 (several packages affected) - OpenJDK (all versions) - Python >=3D 3.13 - Rust Those are the most important projects from the tip of my head, but they are= already the biggest blockers. There is no chance that the upstream maintainers will= adjust their packages for 16-bit alignment, so these will be forever broken on m68= k if we don't switch. I understand that this might be a painful transition, but I don't see any o= ther way to keep the m68k port alive in the foreseeable future unless we fix this pr= oblem which keeps blocking the port. You can see how the Debian m68k port has been falling behind because of the= alignment issues in these statistics: https://buildd.debian.org/stats/graph-ports-big= .png Adrian --=20 .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913