Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753961AbbG0ODW (ORCPT ); Mon, 27 Jul 2015 10:03:22 -0400 Received: from 8bytes.org ([81.169.241.247]:55484 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750931AbbG0ODT (ORCPT ); Mon, 27 Jul 2015 10:03:19 -0400 Date: Mon, 27 Jul 2015 16:03:17 +0200 From: Joerg Roedel To: Yinghai Lu Cc: Baoquan He , Dave Young , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Borislav Petkov , Andrew Morton , Jiri Kosina , Vivek Goyal , Linux Kernel Mailing List Subject: Re: [PATCH v2] Do not reserve crashkernel high memory if crashkernel low memory reserving failed Message-ID: <20150727140317.GN10969@8bytes.org> References: <1437304064-9916-1-git-send-email-bhe@redhat.com> <20150719145320.GB9968@dhcp-17-102.nay.redhat.com> <20150721073123.GA30649@dhcp-129-220.nay.redhat.com> <20150721075011.GC16747@dhcp-128-28.nay.redhat.com> <20150721082343.GC30649@dhcp-129-220.nay.redhat.com> <20150721085846.GA23020@dhcp-128-28.nay.redhat.com> <20150722101133.GH10969@8bytes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 570 Lines: 18 On Wed, Jul 22, 2015 at 04:41:00PM -0700, Yinghai Lu wrote: > Do you mean BIOS have that disabled with not exposing DMAR table ? > > kernel for RHEL 6 and RHEL7 have them enabled. > Also opensuse kernel have that enabled too. You still need to pass intel_iommu=on in the kernel command line to enable its usage. Joerg -- 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/