Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933870Ab3CHH1P (ORCPT ); Fri, 8 Mar 2013 02:27:15 -0500 Received: from mail-ob0-f178.google.com ([209.85.214.178]:42026 "EHLO mail-ob0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932607Ab3CHH1O (ORCPT ); Fri, 8 Mar 2013 02:27:14 -0500 MIME-Version: 1.0 In-Reply-To: <51399154.5030500@redhat.com> References: <51397D1D.5030602@redhat.com> <1750036321.11235774.1362722613994.JavaMail.root@redhat.com> <51399154.5030500@redhat.com> Date: Thu, 7 Mar 2013 23:27:12 -0800 X-Google-Sender-Auth: 32hrMCB61GhrU0IsXOMHe3DtQd4 Message-ID: Subject: Re: 3.9-rc1: crash kernel panic - not syncing: Can not allocate SWIOTLB buffer earlier and can't now provide you with the DMA bounce buffer From: Yinghai Lu To: WANG Chao Cc: CAI Qian , LKML , kexec , Dave Young , Vivek Goyal , "H. Peter Anvin" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 711 Lines: 23 On Thu, Mar 7, 2013 at 11:20 PM, WANG Chao wrote: >> >> looks like your system DO have DMAR table, please enable dmar >> remapping in your kernel config. > > I've already got following config: > CONFIG_DMAR_TABLE=y > CONFIG_INTEL_IOMMU=y > CONFIG_IRQ_REMAP=y > > but I don't have intel_iommu=on in kernel cmdline. IIRC, iommu will prevent > 2nd kernel from booting ... Did you put intel_iommu=on on first and second cpu both? Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/