Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933523AbaFIO0E (ORCPT ); Mon, 9 Jun 2014 10:26:04 -0400 Received: from mail-we0-f171.google.com ([74.125.82.171]:37678 "EHLO mail-we0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933439AbaFIO0D (ORCPT ); Mon, 9 Jun 2014 10:26:03 -0400 Date: Mon, 9 Jun 2014 15:25:59 +0100 From: Matt Fleming To: Vivek Goyal Cc: "H. Peter Anvin" , LKML , linux-efi@vger.kernel.org, Matt Fleming , Dave Young Subject: Re: [PATCH] x86/boot: EFI_MIXED should not prohibit loading above 4G Message-ID: <20140609142559.GE27302@console-pimps.org> References: <1402140380-15377-1-git-send-email-matt@console-pimps.org> <20140609125427.GA16256@redhat.com> <20140609141512.GA22049@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140609141512.GA22049@redhat.com> 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 On Mon, 09 Jun, at 10:15:12AM, Vivek Goyal wrote: > > Ok, thanks. Or I can check whether EFI run time map is there or not. I am > assuming that efi runtime services are not enabled, then run time map > will not be there either. Yes, if runtime services are unavailable then the runtime map will not be exported. Now, you can check for the presence of the runtime map from userland but please don't use that as your check inside the kernel - this is exactly what efi_enabled() is for. -- Matt Fleming, Intel Open Source Technology Center -- 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/