From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753764Ab1JMTUJ (ORCPT ); Thu, 13 Oct 2011 15:20:09 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46701 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753051Ab1JMTUH (ORCPT ); Thu, 13 Oct 2011 15:20:07 -0400 From: Don Zickus To: Ingo Molnar , Andi Kleen , Cc: LKML , Peter Zijlstra , Robert Richter , Andrew Morton , seiji.aguchi@hds.com, vgoyal@redhat.com, mjg@redhat.com, tony.luck@intel.com, gong.chen@intel.com, satoru.moriya@hds.com, avi@redhat.com, Don Zickus Subject: [v2 PATCH 0/3] Use NMI to stop cpus Date: Thu, 13 Oct 2011 15:14:24 -0400 Message-Id: <1318533267-18880-1-git-send-email-dzickus@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series attempts to use NMI to stop cpus instead of the REBOOT_VECTOR irq. The idea is to have a more robust and reliable way to stop cpus when serializing things like the panic path. More details in the changelogs. Don Zickus (3): x86, reboot: Use NMI instead of REBOOT_VECTOR to stop cpus x86, NMI: Add NMI IPI selftest x86, NMI: knob to disable using NMI IPIs to stop cpus Documentation/kernel-parameters.txt | 4 + arch/x86/Kconfig.debug | 12 +++ arch/x86/include/asm/smp.h | 6 + arch/x86/kernel/Makefile | 1 + arch/x86/kernel/nmi_selftest.c | 179 +++++++++++++++++++++++++++++++++++ arch/x86/kernel/smp.c | 72 ++++++++++++++- arch/x86/kernel/smpboot.c | 1 + 7 files changed, 273 insertions(+), 2 deletions(-) create mode 100644 arch/x86/kernel/nmi_selftest.c -- 1.7.6.4