From patchwork Sun Jan 10 19:27:27 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harmandeep Kaur X-Patchwork-Id: 7997601 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 828859F1CC for ; Sun, 10 Jan 2016 19:30:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9440D20384 for ; Sun, 10 Jan 2016 19:30:44 +0000 (UTC) Received: from lists.xen.org (lists.xenproject.org [50.57.142.19]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7E71C20379 for ; Sun, 10 Jan 2016 19:30:42 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xen.org) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aILeF-0002Vn-JT; Sun, 10 Jan 2016 19:27:31 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aILeE-0002Vi-G1 for xen-devel@lists.xenproject.org; Sun, 10 Jan 2016 19:27:30 +0000 Received: from [85.158.137.68] by server-8.bemta-3.messagelabs.com id 47/68-31069-1A0B2965; Sun, 10 Jan 2016 19:27:29 +0000 X-Env-Sender: write.harmandeep@gmail.com X-Msg-Ref: server-12.tower-31.messagelabs.com!1452454048!14862233!1 X-Originating-IP: [209.85.213.181] X-SpamReason: No, hits=0.8 required=7.0 tests=BODY_RANDOM_LONG, RCVD_BY_IP X-StarScan-Received: X-StarScan-Version: 7.35.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 7742 invoked from network); 10 Jan 2016 19:27:28 -0000 Received: from mail-ig0-f181.google.com (HELO mail-ig0-f181.google.com) (209.85.213.181) by server-12.tower-31.messagelabs.com with AES128-GCM-SHA256 encrypted SMTP; 10 Jan 2016 19:27:28 -0000 Received: by mail-ig0-f181.google.com with SMTP id t15so82904973igr.0 for ; Sun, 10 Jan 2016 11:27:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=BRxpe3Re17d6NmXI8SqSs4nN6KXRsAAE/pr9uUAPifE=; b=YNup95172zb5Adn0y6VVSXr5MOZu7mHIKv530UOzNaTaUZGDUctVuK4bGaRZWtoE5z ixPwXLv95n6kAjU2cNoQnAd2OsEX7s7swGkP86NmvHYT586k9uGPMoGnR0Mb+OTFQbKR 1kodGhxw80PF9Ngyo5Thuk08PCncPLzaDjbpEhbacsc31HBdfTyjHh53DkABhZjzkh+9 uEUufC1y+2it3i+0QynCvK8kkPe0QfuacvXwrJAZq0IJ6HJeUdbKK60x0gDOrvL06JmL SdwDCmZpUOrPbpmn8QhyhdWxWCIFDfl9QplQAzbcWPWYWATVD679s71XjskxqFXsHem1 BZJg== MIME-Version: 1.0 X-Received: by 10.50.92.41 with SMTP id cj9mr8906511igb.38.1452454047846; Sun, 10 Jan 2016 11:27:27 -0800 (PST) Received: by 10.79.111.77 with HTTP; Sun, 10 Jan 2016 11:27:27 -0800 (PST) Date: Mon, 11 Jan 2016 00:57:27 +0530 Message-ID: From: Harmandeep Kaur To: xen-devel@lists.xenproject.org, Dario Faggioli Subject: [Xen-devel] Blank screen while booting xen X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Hi, I tried to modify and compile some of Xen 4.7's code (cloned from git clone git://xenbits.xen.org/xen.git) and even with a very minor change (patch included at last) my xen failed to boot. It stucks at black blank screen after showing some xen logs. By adding "vga=text-80x80,keep" to the grub before booting xen., infinite loop of text "(XEN) traps.c:3290: GPF (0000): ffff82d0801af4d5 -> ffff82d080240e5a" appears. I tried to compile and boot xen reverting the change, but same issue still exists. Also I tried to setup serial console but my output is garbled. More info on it here, http://lists.xenproject.org/archives/html/xen-devel/2015-12/msg02045.html I tried different software (cu, gtkterm), different baud rates, different serial-USB cable and stopping modemmanager, but no luck. I am using i3-6100 processor, if that info is needed.I will appreciate any help. Regards, Harmandeep Kaur Outreachy Intern -----------------------------------------------PATCH--------------------------------------------- From c814c4ac0028bdef0082561ad6cd69570502c3ba Mon Sep 17 00:00:00 2001 From: Harmandeep Kaur Date: Tue, 29 Dec 2015 22:23:21 +0530 Subject: [PATCH] First mod Signed-off-by: Harmandeep Kaur --- xen/common/sched_credit.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/xen/common/sched_credit.c b/xen/common/sched_credit.c index 0dce790..b395501 100644 --- a/xen/common/sched_credit.c +++ b/xen/common/sched_credit.c @@ -1148,6 +1148,8 @@ csched_dom_init(const struct scheduler *ops, struct domain *dom) { struct csched_dom *sdom; +printk("XXX Hello, this is my first mod :) \n"); + if ( is_idle_domain(dom) ) return 0;