Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759473AbZGIDC3 (ORCPT ); Wed, 8 Jul 2009 23:02:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756262AbZGIDCV (ORCPT ); Wed, 8 Jul 2009 23:02:21 -0400 Received: from acsinet11.oracle.com ([141.146.126.233]:39084 "EHLO acsinet11.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756089AbZGIDCV (ORCPT ); Wed, 8 Jul 2009 23:02:21 -0400 Message-ID: <4A555DA7.6020009@oracle.com> Date: Wed, 08 Jul 2009 20:01:59 -0700 From: Randy Dunlap User-Agent: Thunderbird 2.0.0.19 (X11/20081227) MIME-Version: 1.0 To: Jeff Chua CC: Randy Dunlap , Dave Airlie , Greg KH , Peter Jones , Linux Kernel , Linus Torvalds , Scott James Remnant , Kay Sievers , Dave Jones Subject: Re: can we move USB_DEVICEFS to non-embedded? References: <20090623144221.GA29593@suse.de> <4A54A538.3080407@redhat.com> <20090708140419.GA20418@suse.de> <4A54A938.5030807@redhat.com> <20090708145625.GA20690@suse.de> <4A54B5C2.9000908@redhat.com> <20090708154758.GB20979@suse.de> <21d7e9970907081423v6d3830eey227f3d54b10382a6@mail.gmail.com> <4A554F1E.5020508@oracle.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Source-IP: abhmt007.oracle.com [141.146.116.16] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090201.4A555D9B.0122:SCFSTAT5015188,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1992 Lines: 57 Jeff Chua wrote: > On Thu, Jul 9, 2009 at 9:59 AM, Randy Dunlap wrote: >>> Without CONFIG_EMBEDDED ... >>> CONFIG_NAMESPACES=y >> Under General Setup, Namespaces support > > You're good. Thanks. > >>> With CONFIG_EMBEDDED=y ... >>> # CONFIG_NAMESPACES is not set >>> CONFIG_VMSPLIT_3G=y >> Under Processor type and features, Memory split > > This is one I'm having trouble with. When CONFIG_EMBEDED is not set, I > can't find any "VMSPLIT" in .config, but when CONFIG_EMBEDDED is set, > I'll have to choose the VMSPLIT option. Should I select VMSPLIT_3G? Probably so, since that's the default. > Here's what it says ... > > | Prompt: Memory split > | Defined at arch/x86/Kconfig:1062 > | Depends on: EXPERIMENTAL && X86_32 && EMBEDDED > | Location: > | -> Processor type and features > | Selected by: EXPERIMENTAL && X86_32 && EMBEDDED && m arch/x86/Kconfig says: choice depends on EXPERIMENTAL prompt "Memory split" if EMBEDDED default VMSPLIT_3G depends on X86_32 ---help--- Select the desired split between kernel and user memory. If the address range available to the kernel is less than the physical memory installed, the remaining memory will be available as "high memory". Accessing high memory is a little more costly than low memory, as it needs to be mapped into the kernel first. Note that increasing the kernel address space limits the range available to user programs, making the address space there tighter. Selecting anything other than the default 3G/1G split will also likely make your kernel incompatible with binary-only kernel modules. If you are not absolutely sure what you are doing, leave this option alone! ~Randy -- 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/