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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 54729C433FE for ; Fri, 21 Oct 2022 20:57:08 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olxMu-0003lT-Pk; Fri, 21 Oct 2022 15:07:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olvGW-0002xZ-Kh for qemu-devel@nongnu.org; Fri, 21 Oct 2022 12:53:00 -0400 Received: from mail-wr1-x42a.google.com ([2a00:1450:4864:20::42a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1olvGB-00088c-J6 for qemu-devel@nongnu.org; Fri, 21 Oct 2022 12:53:00 -0400 Received: by mail-wr1-x42a.google.com with SMTP id bu30so5870511wrb.8 for ; Fri, 21 Oct 2022 09:52:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:message-id:in-reply-to:date :subject:cc:to:from:user-agent:references:from:to:cc:subject:date :message-id:reply-to; bh=yLEcE8O44JrkvO7cla+PVTgQr9rK4WWaCp53Xny/2Mc=; b=sP5jtVQzQCWlRmf17PlSC2HU45+qEY5TX+iV/rtg0uV7X8Fw/jQCw+Zjg2L4uYLFgm xChQHU+w6fOZESlxOglKwZFKmnmMm50n5KkOKt2/vp06ubm1dKKbGftt1dVD2nKZWsh/ 6xghy6MjVFVroTBR7iuUC8gr8nbLKh0CYMtSj6WnUYYtftf24iXXshRczHqcsT+CvyQj ilgvvxyI82kYnqij//4JzGbEKKqe6NTnPBxKsvrPNMUU/Xhhcje/OV6AoHBorWF88qVm 72SRK5UOprZ7WM3UFJ9XfsX2bQRhBSF3XFCF9KUxGSZCzEPjJgChu+I5xTU1BLeT+8vv fPUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:in-reply-to:date :subject:cc:to:from:user-agent:references:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=yLEcE8O44JrkvO7cla+PVTgQr9rK4WWaCp53Xny/2Mc=; b=YglTaQ4fcEYY+4TdUDlBmHJIJbpRq8nb8o/O8Cecld/vtBLC4GgLsmVQNJkm9Hzktv No9q8M+QWgPxsWHNKLNI8XNgCyptBwtaq7Hv4ZmE970LFnAtE32+xlBCDiDwdfOXM8SX vyAtomnQnjZx2HhSz5VojCvoJTY3vT431JikqvimiO7EC8XSfExqbXIsLTnLBUyvU/GL yZBdCmeqBOo3x2ZIhycMD2HGznlhcS9lBofgAgmSVP3tzhPw0u6LV98Io2yvtOcLVaU8 DYPcfbn68hNU8z1Wfb95lrm+jWhFaDo1iqJMRg0XfAYuM0LzOEBBrkQ6/HpNKLCaXksC D/FA== X-Gm-Message-State: ACrzQf1mgg0yzpH0YMzy+1KiuxRbFgB0dmLNxeBnP0tQDKMfbDw5yW0O YVKuNuW7rcQBVSe6XGdamKU0Dw== X-Google-Smtp-Source: AMsMyM5UXocUlkwrkvSP6QBjGqgmPYf2gAL0iXPFiH3ueMk2C+w1vP9iuuxC9sUuXYEo6kHcJocolw== X-Received: by 2002:a5d:650f:0:b0:22e:6597:fdd0 with SMTP id x15-20020a5d650f000000b0022e6597fdd0mr12370940wru.127.1666371157563; Fri, 21 Oct 2022 09:52:37 -0700 (PDT) Received: from zen.linaroharston ([185.81.254.11]) by smtp.gmail.com with ESMTPSA id k16-20020a5d6290000000b0022ae4f8395dsm18745022wru.96.2022.10.21.09.52.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Oct 2022 09:52:37 -0700 (PDT) Received: from zen (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id 958D61FFB7; Fri, 21 Oct 2022 17:52:36 +0100 (BST) References: <20221004093206.652431-1-berrange@redhat.com> <20221004093206.652431-4-berrange@redhat.com> User-agent: mu4e 1.9.1; emacs 28.2.50 From: Alex =?utf-8?Q?Benn=C3=A9e?= To: =?utf-8?Q?Daniel_P=2E_Berrang=C3=A9?= Cc: Peter Maydell , Laurent Vivier , Eduardo Habkost , Richard Henderson , Paolo Bonzini , qemu-devel@nongnu.org Subject: Re: [PATCH 3/4] meson: enforce a minimum Linux kernel headers version >= 4.18 Date: Fri, 21 Oct 2022 17:50:24 +0100 In-reply-to: Message-ID: <87h6zx5dbf.fsf@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::42a; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x42a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Qemu-devel" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Daniel P. Berrang=C3=A9 writes: > On Fri, Oct 21, 2022 at 03:38:38PM +0100, Peter Maydell wrote: >> On Fri, 21 Oct 2022 at 15:30, Laurent Vivier wrote: >> > >> > Le 04/10/2022 =C3=A0 11:32, Daniel P. Berrang=C3=A9 a =C3=A9crit : >> > > Various areas of QEMU have a dependency on Linux kernel header >> > > definitions. This falls under the scope of our supported platforms >> > > matrix, but historically we've not checked for a minimum kernel >> > > headers version. This has made it unclear when we can drop support >> > > for older kernel headers. >> > > >> > > * Alpine 3.14: 5.10 >> > > * CentOS 8: 4.18 >> > > * CentOS 9: 5.14 >> > > * Debian 10: 4.19 >> > > * Debian 11: 5.10 >> > > * Fedora 35: 5.19 >> > > * Fedora 36: 5.19 >> > > * OpenSUSE 15.3: 5.3.0 >> > > * Ubuntu 20.04: 5.4 >> > > * Ubuntu 22.04: 5.15 >> > > >> > > The above ignores the 3rd version digit since distros update their >> > > packages periodically and such updates don't generally affect public >> > > APIs to the extent that it matters for our build time check. >> > > >> > > Overall, we can set the baseline to 4.18 currently. >> > >> > As this change affects entire QEMU build, I'd prefer to have some "Ack= ed-by" before merging it via >> > linux-user branch. >>=20 >> I still think we should be more conservative about kernel header >> requirements than we are for other dependencies. > > How much more though ? What other distros do we want to target that > we don't already cover with our targetted platforms ? Well purely selfishly the big build box I have access to is still on 18.04 which is currently running 4.15.0-191-generic. It will hopefully get upgraded before 18.04 goes out of support from Canonical. From a practical point of view it will be a pain if I can't bisect on it in the meantime. > > > With regards, > Daniel --=20 Alex Benn=C3=A9e