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 X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33EF8C433ED for ; Sat, 10 Apr 2021 09:30:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A5DA61008 for ; Sat, 10 Apr 2021 09:30:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234530AbhDJJag (ORCPT ); Sat, 10 Apr 2021 05:30:36 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:55690 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229537AbhDJJad (ORCPT ); Sat, 10 Apr 2021 05:30:33 -0400 From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1618047018; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=TYeng7QY6h7mjvFeTTLz4lHKhsIHz/oD5/WrQR67yR8=; b=0TZMKVYHFJFYzE/Dw8YBI70NqkazjTSpqArmVDySc0teJCFexqbcD9DpjM6DhP8bQrEy3D /qFMmKjC0G0K4g7K5bZfySrySirOMC4YbkAfLeZgN2U4BYHaEzU8YJJ2QwHnTDyNxbR/L4 yc2HaVfrWU0fdFhDuTZvC5D/bx4U9dZlXebOuLtLOH0DnbGwsYWaMk0FE8SLhNKxzqlhHV wL9P3Y92hoaFZAeovrk5n4teTEvEwC6/OmlvBd9LkTf/VvblubbWljIkeMDPIx+GHfx3Pe 1VwPLTjFUoCl/oXCEtVXuEC+rSFevunnTuXuE9Ns0Rs1qaiv5rusU7sD/nGZag== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1618047018; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=TYeng7QY6h7mjvFeTTLz4lHKhsIHz/oD5/WrQR67yR8=; b=xocQgvuFWLeehFJQ5iQ2EFw4ko3z0n+iDFVJd3TTpjSGocfOvcHnZplomINSiBSRnnKc0E 0IF7mBy335IHOrCQ== To: Luke Dashjr , linux-kernel@vger.kernel.org, trivial@kernel.org, x86@kernel.org, Ingo Molnar , Borislav Petkov Subject: Re: [PATCH] arch/x86: Encourage rather than discourage x2apic support In-Reply-To: <202103310516.42497.luke@dashjr.org> References: <202103310516.42497.luke@dashjr.org> Date: Sat, 10 Apr 2021 11:30:18 +0200 Message-ID: <87v98u32s5.ffs@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 31 2021 at 05:16, Luke Dashjr wrote: > Multi-core SMP doesn't work on modern Intel CPUs (at least Comet Lake) without > x2apic. Unsure users should say Y. I'd rather make it explicit by also adding default y Thanks, tglx