Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761639AbXINFS0 (ORCPT ); Fri, 14 Sep 2007 01:18:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751856AbXINFSS (ORCPT ); Fri, 14 Sep 2007 01:18:18 -0400 Received: from ozlabs.org ([203.10.76.45]:48516 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751968AbXINFSR (ORCPT ); Fri, 14 Sep 2007 01:18:17 -0400 Subject: [PATCH 1/3] Normalize config options for guest support From: Rusty Russell To: lkml - Kernel Mailing List Cc: virtualization , Jeremy Fitzhardinge , Zachary Amsden , Chris Wright , Avi Kivity , Anthony Liguori Content-Type: text/plain Date: Fri, 14 Sep 2007 15:17:34 +1000 Message-Id: <1189747054.7262.34.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3743 Lines: 106 Group all the "guest OS" support options together, under CONFIG_PARAVIRT. Make this a proper menu item so it looks neater on menuconfig etc, and make the wording for each prompt uniform. Signed-off-by: Rusty Russell diff -r 3d3ac181380b arch/i386/Kconfig --- a/arch/i386/Kconfig Fri Sep 14 12:24:15 2007 +1000 +++ b/arch/i386/Kconfig Fri Sep 14 12:45:09 2007 +1000 @@ -214,28 +214,38 @@ config X86_ES7000 endchoice -config PARAVIRT - bool "Paravirtualization support (EXPERIMENTAL)" +menuconfig PARAVIRT + bool "Paravirtualized guest support (EXPERIMENTAL)" depends on EXPERIMENTAL depends on !(X86_VISWS || X86_VOYAGER) help Paravirtualization is a way of running multiple instances of Linux on the same machine, under a hypervisor. This option changes the kernel so it can modify itself when it is run under a hypervisor, improving performance significantly. However, when run without a hypervisor the kernel is theoretically slower. If in doubt, say N. + +if PARAVIRT source "arch/i386/xen/Kconfig" config VMI - bool "VMI Paravirt-ops support" - depends on PARAVIRT + bool "VMI Guest support" help VMI provides a paravirtualized interface to the VMware ESX server (it could be used by other hypervisors in theory too, but is not at the moment), by linking the kernel to a GPL-ed ROM module provided by the hypervisor. + +config LGUEST_GUEST + bool "Lguest guest support" + depends on !X86_PAE + help + Lguest is a tiny in-kernel hypervisor. Selecting this will + allow your kernel to boot under lguest. This option will increase + your kernel size by about 6k. If in doubt, say N. +endif config ACPI_SRAT bool diff -r 3d3ac181380b arch/i386/xen/Kconfig --- a/arch/i386/xen/Kconfig Fri Sep 14 12:24:15 2007 +1000 +++ b/arch/i386/xen/Kconfig Fri Sep 14 12:37:38 2007 +1000 @@ -3,8 +3,8 @@ # config XEN - bool "Enable support for Xen hypervisor" - depends on PARAVIRT && X86_CMPXCHG && X86_TSC && !NEED_MULTIPLE_NODES + bool "Xen guest support" + depends on X86_CMPXCHG && X86_TSC && !NEED_MULTIPLE_NODES help This is the Linux Xen port. Enabling this will allow the kernel to boot in a paravirtualized environment under the diff -r 3d3ac181380b drivers/lguest/Kconfig --- a/drivers/lguest/Kconfig Fri Sep 14 12:24:15 2007 +1000 +++ b/drivers/lguest/Kconfig Fri Sep 14 12:31:44 2007 +1000 @@ -1,23 +1,18 @@ config LGUEST config LGUEST tristate "Linux hypervisor example code" - depends on X86 && PARAVIRT && EXPERIMENTAL && !X86_PAE && FUTEX - select LGUEST_GUEST + depends on X86 && EXPERIMENTAL && !X86_PAE && FUTEX select HVC_DRIVER ---help--- - This is a very simple module which allows you to run - multiple instances of the same Linux kernel, using the + This is a very simple module called lg.ko which allows you to run + multiple instances of the Linux kernel, using the "lguest" command found in the Documentation/lguest directory. Note that "lguest" is pronounced to rhyme with "fell quest", not "rustyvisor". See Documentation/lguest/lguest.txt. + Usually you would also turn on "Lguest guest support", to create a + kernel which can also boot under lguest. + If unsure, say N. If curious, say M. If masochistic, say Y. - -config LGUEST_GUEST - bool - help - The guest needs code built-in, even if the host has lguest - support as a module. The drivers are tiny, so we build them - in too. config LGUEST_NET tristate - 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/