From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: [PATCH] x86: default to reboot via ACPI Date: Mon, 25 Aug 2008 12:32:57 +0200 Message-ID: <20080825103257.GC15810@elte.hu> References: <1219659087-17536-1-git-send-email-avi@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "Eric W. Biederman" , linux-kernel@vger.kernel.org, kvm@vger.kernel.org To: Avi Kivity Return-path: Received: from mx2.mail.elte.hu ([157.181.151.9]:40567 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753467AbYHYKdI (ORCPT ); Mon, 25 Aug 2008 06:33:08 -0400 Content-Disposition: inline In-Reply-To: <1219659087-17536-1-git-send-email-avi@qumranet.com> Sender: kvm-owner@vger.kernel.org List-ID: * Avi Kivity wrote: > Triple-fault and keyboard reset may assert INIT instead of RESET; > however INIT is blocked when Intel VT is enabled. This leads to a > partially reset machine when invoking emergency_restart via sysrq-b: > the processor is still working but other parts of the system are dead. > > Default to rebooting via ACPI, which correctly asserts RESET and > reboots the machine. > > This is safe since we will fall back to keyboard reset and triple > fault if acpi is not enabled or if the reset is not successful. > > Signed-off-by: Avi Kivity applied to tip/x86/reboot - thanks Avi! Ingo