From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932561Ab1I1Wnk (ORCPT ); Wed, 28 Sep 2011 18:43:40 -0400 Received: from cantor2.suse.de ([195.135.220.15]:54228 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932548Ab1I1Wni (ORCPT ); Wed, 28 Sep 2011 18:43:38 -0400 X-Mailbox-Line: From gregkh@clark.kroah.org Wed Sep 28 15:01:38 2011 Message-Id: <20110928220138.070987124@clark.kroah.org> User-Agent: quilt/0.48-16.4 Date: Wed, 28 Sep 2011 15:01:25 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Thomas Gleixner , Ingo Molnar Subject: [121/244] x86, iommu: Mark DMAR IRQ as non-threaded In-Reply-To: <20110928220225.GA27128@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let us know. ------------------ From: Thomas Gleixner commit 477694e71113fd0694b6bb0bcc2d006b8ac62691 upstream. Mark this lowlevel IRQ handler as non-threaded. This prevents a boot crash when "threadirqs" is on the kernel commandline. Also the interrupt handler is handling hardware critical events which should not be delayed into a thread. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- drivers/pci/dmar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -1388,7 +1388,7 @@ int dmar_set_interrupt(struct intel_iomm return ret; } - ret = request_irq(irq, dmar_fault, 0, iommu->name, iommu); + ret = request_irq(irq, dmar_fault, IRQF_NO_THREAD, iommu->name, iommu); if (ret) printk(KERN_ERR "IOMMU: can't request irq\n"); return ret;