Received: by 2002:a05:7412:f584:b0:e2:908c:2ebd with SMTP id eh4csp2754287rdb; Wed, 6 Sep 2023 13:54:36 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFqRPjJyHbjvSrit1QDAj+fYQ05XCKvRmLF/d8ymT/rhfX14KgMyvBtFpXXxJ/73Tw3PAoa X-Received: by 2002:a05:6a21:a5a8:b0:152:5f8b:359a with SMTP id gd40-20020a056a21a5a800b001525f8b359amr10931481pzc.28.1694033675854; Wed, 06 Sep 2023 13:54:35 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1694033675; cv=none; d=google.com; s=arc-20160816; b=zyApMHON7DV4aeSE0QtzG6KXBYUbaAiSvbj/m3BzgHYbHkDQhR8Pq9piUF/HTU1gXL ycHVKhn1PbQHXtPA9BiehW64jSy3F7fB89xyqUhmmLuPd40K4j3nWqX4JXN0wcqzULgN usbVaDRh0L8OsMCBApJf2VuB/6USZ5+LOgal24e2Bpua8pDKZAmAUa6qV91fO6a/vQpE IopA0OLzcxwq6AQSOLS5UgmNs0LKs93C4QNzZFGiLX2sX2eOCY9HWdkGEcldJIUR40zH n1p7isGj/NgDzakNN+c6vCpa3sBqsVp8umiZTHopfaRvNhNVqMdGuo4ZDLJEdU3b63/9 j1eA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date; bh=KJ3Z54ohywqbRwxer43ac3NkEQDlcNssu8wielviuEQ=; fh=3JQm257gCZqlI3SBUCR/bu7R83GA1MxPqRXQivZUvlc=; b=M4Ozq6/QsLIdfo24E2bGB7yNdC4MMkyE00btjiLm6lmKwFhGLFsY6itzUFhu3sxMZl CqOSfT7Khbf9vBPNVdn5PivLNofgcxBueHORDpbqMGuYrhJbEVKtmnVAdVuscrwRnrNo G6v0ai554FG4hcVBoGcpxNJl7y3SRp6Jp+L6yMi9lb4yPlpuhjktXVGTBTeJ8xLGpZxT 2XNmkKiyAecrtvvS01pgGy2IEONKosC74Q7ScGAUHu0vpf8ZfK/IImm2q6jxUueSIiTm wFx9Gcqq04maiwurfXflFqSj7pmX+ofCsr3OeRtAYpt3KsXLX8FRozuJIhsKTc6y4dnr ZU9A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id o11-20020a056a0015cb00b0068be710ee8esi12384954pfu.36.2023.09.06.13.54.22; Wed, 06 Sep 2023 13:54:35 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242490AbjIFPVO (ORCPT + 99 others); Wed, 6 Sep 2023 11:21:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46800 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232672AbjIFPVO (ORCPT ); Wed, 6 Sep 2023 11:21:14 -0400 Received: from muru.com (muru.com [72.249.23.125]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 631E41717; Wed, 6 Sep 2023 08:21:09 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 783DC8050; Wed, 6 Sep 2023 15:21:08 +0000 (UTC) Date: Wed, 6 Sep 2023 18:21:07 +0300 From: Tony Lindgren To: Marc Haber Cc: Sean Christopherson , Bagas Sanjaya , linux-kernel@vger.kernel.org, Linux Regressions , Linux KVM , Paolo Bonzini Subject: Re: Linux 6.5 speed regression, boot VERY slow with anything systemd related Message-ID: <20230906152107.GD11676@atomide.com> References: <20230901122431.GU11676@atomide.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Marc Haber [230906 14:41]: > If I cannot see the host boot, I cannot debug, and if I cannot type into > grub, I cannot find out whether removing the serial console from the > kernel command line fixes the issue. I have removed the network > interface to simplify things, so I need a working console. I use something like this for a serial console: -serial stdio -append "console=ttyS0 other kernel command line options" Regards, Tony