From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752860Ab3KOS2F (ORCPT ); Fri, 15 Nov 2013 13:28:05 -0500 Received: from g2t1383g.austin.hp.com ([15.217.136.92]:56461 "EHLO g2t1383g.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751299Ab3KOS14 (ORCPT ); Fri, 15 Nov 2013 13:27:56 -0500 X-Greylist: delayed 596 seconds by postgrey-1.27 at vger.kernel.org; Fri, 15 Nov 2013 13:27:56 EST Date: Fri, 15 Nov 2013 11:16:41 -0700 From: jerry.hoemann@hp.com To: "H. Peter Anvin" Cc: Yinghai Lu , Ingo Molnar , Pekka Enberg , Rob Landley , Thomas Gleixner , Ingo Molnar , x86 maintainers , Matt Fleming , Andrew Morton , "list@ebiederm.org:DOCUMENTATION" , "list@ebiederm.org:MEMORY MANAGEMENT" , linux-efi@vger.kernel.org, Vivek Goyal , LKML Subject: Re: [PATCH 0/3] Early use of boot service memory Message-ID: <20131115181641.GA2748@anatevka.fc.hp.com> Reply-To: jerry.hoemann@hp.com References: <20131113224503.GB25344@anatevka.fc.hp.com> <52840206.5020006@zytor.com> <20131113235708.GC25344@anatevka.fc.hp.com> <20131114180455.GA32212@anatevka.fc.hp.com> <20131115005049.GJ5116@anatevka.fc.hp.com> <20131115062417.GB9237@gmail.com> <5285C639.5040203@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5285C639.5040203@zytor.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 Thu, Nov 14, 2013 at 10:59:05PM -0800, H. Peter Anvin wrote: > On 11/14/2013 10:55 PM, Yinghai Lu wrote: > > > > Why just asking distros to append ",high" in their installation > > program for 64bit by default? > > > [...] > > > > What is hpa's suggestion? > > > > Pretty much what you just said ;) The issue w/ efi_reserve_boot_services exists across several versions and distros of linux. So, I'd like to find a fix that works across several kernel versions and distros. the kernel and required utility code to allocate high isn't available on distros based on pre 3.9 kernels. While the alloc high code is a step in the right direction, it is still green. We are having much more problems getting crash dump to work w/ top of tree kernels/utilities than we are having w/ distros running legacy bits. Back porting this much larger change to multiple versions and multiple distros isn't my first choice as its is much more work, much more likely to destabilize distros w/ legacy kernels. We will be passing along fixes for these other top of tree dump issues as we find them, but our first priority is enabling our distro partners that happen to be using pre 3.9 based kernels. Jerry -- ---------------------------------------------------------------------------- Jerry Hoemann Software Engineer Hewlett-Packard 3404 E Harmony Rd. MS 57 phone: (970) 898-1022 Ft. Collins, CO 80528 FAX: (970) 898-XXXX email: jerry.hoemann@hp.com ----------------------------------------------------------------------------