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[Xen-changelog] Updated to reflect new KERNELS defaults, and properly describe make install and



# HG changeset patch
# User emellor@xxxxxxxxxxxxxxxxxxxxxx
# Node ID 2896fade373e81c1e14ecbe73e10d2453b6fd5a9
# Parent  439c25bd2235b50606d35e554060eca2b210f4ae
Updated to reflect new KERNELS defaults, and properly describe make install and
make dist.

diff -r 439c25bd2235 -r 2896fade373e README
--- a/README    Tue Apr 11 11:42:28 2006
+++ b/README    Tue Apr 11 11:50:46 2006
@@ -1,158 +1,176 @@
-################################
- __  __            _____  ___  
- \ \/ /___ _ __   |___ / / _ \ 
-  \  // _ \ '_ \    |_ \| | | |
-  /  \  __/ | | |  ___) | |_| |
- /_/\_\___|_| |_| |____(_)___/ 
-
-################################
-
-http://www.xensource.com/xen/about.html
-
-What is Xen?
-============
-
-Xen is a Virtual Machine Monitor (VMM) originally developed by the
-Systems Research Group of the University of Cambridge Computer
-Laboratory, as part of the UK-EPSRC funded XenoServers project.  Xen
-is freely-distributable Open Source software, released under the GNU
-GPL. Since its initial public release, Xen has grown a large
-development community, spearheaded by XenSource Inc, a company created
-by the original Xen development team to build enterprise products
-around Xen.
-
-The 3.0 release offers excellent performance, hardware support and
-enterprise-grade features such as x86_32-PAE, x86_64, SMP guests and
-live relocation of VMs. This install tree contains source for a Linux
-2.6 guest; ports to Linux 2.4, NetBSD, FreeBSD and Solaris will follow
-later (and are already available for previous Xen releases).
-
-This file contains some quick-start instructions to install Xen on
-your system. For full documentation, see the Xen User Manual. If this
-is a pre-built release then you can find the manual at:
- dist/install/usr/share/doc/xen/pdf/user.pdf
-If you have a source release, then 'make -C docs' will build the
-manual at docs/pdf/user.pdf.
-
-Quick-Start Guide - Pre-Built Binary Release
-============================================
-
-[NB. Unless noted otherwise, all the following steps should be
-performed with root privileges.]
-
-1. Install the binary distribution onto your filesystem:
-
-    # sh ./install.sh
-
-   Among other things, this will install Xen and Xen-ready Linux
-   kernel files in /boot, kernel modules and Python packages in /lib,
-   and various control tools in standard 'bin' directories.
-
-2. Configure your bootloader to boot Xen and an initial Linux virtual
-   machine. Note that Xen currently only works with GRUB and pxelinux
-   derived boot loaders: less common alternatives such as LILO are
-   *not* supported. You can most likely find your GRUB menu file at
-   /boot/grub/menu.lst: edit this file to include an entry like the
-   following:
-
-    title Xen 3.0 / XenLinux 2.6
-       kernel /boot/xen-3.0.gz console=vga
-       module /boot/vmlinuz-2.6-xen root=<root-dev> ro console=tty0
-       module /boot/initrd-2.6-xen.img
-
-   NB: Not all kernel configs need an initial ram disk (initrd), but
-   if you do specify one you'll need to use the 'module' grub directive
-   rather than 'initrd'.
-
-   The linux command line takes all the usual options, such as
-   root=<root-dev> to specify your usual root partition (e.g.,
-   /dev/hda1).  
-
-   The Xen command line takes a number of optional arguments described
-   in the manual. The most common is 'dom0_mem=xxxM' which sets the
-   amount of memory to allocate for use by your initial virtual
-   machine (known as domain 0). Note that Xen itself reserves about
-   32MB memory for internal use, which is not available for allocation
-   to virtual machines.  
-
-3. Reboot your system and select the "Xen 3.0 / XenLinux 2.6" menu
-   option. After booting Xen, Linux will start and your initialisation
-   scripts should execute in the usual way.
-
-Quick-Start Guide - Source Release
-==================================
-
-First, there are a number of prerequisites for building a Xen source
-release. Make sure you have all the following installed, either by
-visiting the project webpage or installing a pre-built package
-provided by your Linux distributor:
-    * GCC (preferably v3.2.x or v3.3.x; older versions are unsupported) 
-    * GNU Make
-    * GNU Binutils
-    * Development install of zlib (e.g., zlib-dev)
-    * Development install of Python v2.3 or later (e.g., python-dev)
-    * bridge-utils package (/sbin/brctl)
-    * iproute package (/sbin/ip)
-    * hotplug or udev
-
-[NB. Unless noted otherwise, all the following steps should be
-performed with root privileges.]
-
-1. Download and untar the source tarball file. This will be a
-   file named xen-unstable-src.tgz, or xen-$version-src.tgz.
-   You can also pull the current version from the SCMS
-   that is being used (Bitkeeper, scheduled to change shortly).
-
-    # tar xzf xen-unstable-src.tgz
-
-   Assuming you are using the unstable tree, this will
-   untar into xen-unstable. The rest of the instructions
-   use the unstable tree as an example, substitute the
-   version for unstable.
-
-2. cd to xen-unstable (or whatever you sensibly rename it to).
-   The Linux, netbsd and freebsd kernel source trees are in
-   the $os-$version-xen-sparse directories.
-
-On Linux:
-
-3. For the very first build, or if you want to destroy existing
-   .configs and build trees, perform the following steps:
-
-    # make KERNELS=linux-2.6-xen world
-    # make install
-
-   It will create and install into the dist/ directory which is the
-   default install location. It will build the xen binary (xen.gz),
-   and a linux kernel and modules that can be used in both dom0 and an
-   unprivileged guest kernel (vmlinuz-2.6.x-xen), the tools and the
-   documentation.
-
-   If you don't specify KERNELS= on the make command line it will
-   default to building two kernels, vmlinuz-2.6.x-xen0 and
-   vmlinuz-2.6.x-xenU. These are smaller builds with just selected
-   modules, intended primarilly for developers that don't like to wait
-   for a -xen kernel to build. The -xenU kernel is particularly small
-   as it does not contain any physical device drivers, and hence is
-   only useful for guest domains.
-
-   If you want to build an x86_32 PAE capable xen and kernel to work
-   on machines with >= 4GB of memory, use XEN_TARGET_X86_PAE=y on the
-   make command line.
-
-4. To rebuild an existing tree without modifying the config:
-    # make dist
-
-   This will build and install xen, kernels, tools, and
-   docs into the local dist/ directory.
-
-5. To rebuild a kernel with a modified config:
-
-    # make linux-2.6-xen-config CONFIGMODE=menuconfig     (or xconfig)
-    # make linux-2.6-xen-build
-    # make linux-2.6-xen-install
-
-   Depending on your config, you may need to use 'mkinitrd' to create
-   an initial ram disk, just like a native system e.g. 
-    # depmod 2.6.12.6-xen
-    # mkinitrd -v -f --with=aacraid --with=sd_mod --with=scsi_mod 
initrd-2.6.12.6-xen.img 2.6.12.6-xen
+################################
+ __  __            _____  ___  
+ \ \/ /___ _ __   |___ / / _ \ 
+  \  // _ \ '_ \    |_ \| | | |
+  /  \  __/ | | |  ___) | |_| |
+ /_/\_\___|_| |_| |____(_)___/ 
+
+################################
+
+http://www.xensource.com/xen/about.html
+
+What is Xen?
+============
+
+Xen is a Virtual Machine Monitor (VMM) originally developed by the
+Systems Research Group of the University of Cambridge Computer
+Laboratory, as part of the UK-EPSRC funded XenoServers project.  Xen
+is freely-distributable Open Source software, released under the GNU
+GPL. Since its initial public release, Xen has grown a large
+development community, spearheaded by XenSource Inc, a company created
+by the original Xen development team to build enterprise products
+around Xen.
+
+The 3.0 release offers excellent performance, hardware support and
+enterprise-grade features such as x86_32-PAE, x86_64, SMP guests and
+live relocation of VMs. This install tree contains source for a Linux
+2.6 guest; ports to Linux 2.4, NetBSD, FreeBSD and Solaris will follow
+later (and are already available for previous Xen releases).
+
+This file contains some quick-start instructions to install Xen on
+your system. For full documentation, see the Xen User Manual. If this
+is a pre-built release then you can find the manual at:
+ dist/install/usr/share/doc/xen/pdf/user.pdf
+If you have a source release, then 'make -C docs' will build the
+manual at docs/pdf/user.pdf.
+
+Quick-Start Guide - Pre-Built Binary Release
+============================================
+
+[NB. Unless noted otherwise, all the following steps should be
+performed with root privileges.]
+
+1. Install the binary distribution onto your filesystem:
+
+    # sh ./install.sh
+
+   Among other things, this will install Xen and Xen-ready Linux
+   kernel files in /boot, kernel modules and Python packages in /lib,
+   and various control tools in standard 'bin' directories.
+
+2. Configure your bootloader to boot Xen and an initial Linux virtual
+   machine. Note that Xen currently only works with GRUB and pxelinux
+   derived boot loaders: less common alternatives such as LILO are
+   *not* supported. You can most likely find your GRUB menu file at
+   /boot/grub/menu.lst: edit this file to include an entry like the
+   following:
+
+    title Xen 3.0 / XenLinux 2.6
+       kernel /boot/xen-3.0.gz console=vga
+       module /boot/vmlinuz-2.6-xen root=<root-dev> ro console=tty0
+       module /boot/initrd-2.6-xen.img
+
+   NB: Not all kernel configs need an initial ram disk (initrd), but
+   if you do specify one you'll need to use the 'module' grub directive
+   rather than 'initrd'.
+
+   The linux command line takes all the usual options, such as
+   root=<root-dev> to specify your usual root partition (e.g.,
+   /dev/hda1).  
+
+   The Xen command line takes a number of optional arguments described
+   in the manual. The most common is 'dom0_mem=xxxM' which sets the
+   amount of memory to allocate for use by your initial virtual
+   machine (known as domain 0). Note that Xen itself reserves about
+   32MB memory for internal use, which is not available for allocation
+   to virtual machines.  
+
+3. Reboot your system and select the "Xen 3.0 / XenLinux 2.6" menu
+   option. After booting Xen, Linux will start and your initialisation
+   scripts should execute in the usual way.
+
+Quick-Start Guide - Source Release
+==================================
+
+First, there are a number of prerequisites for building a Xen source
+release. Make sure you have all the following installed, either by
+visiting the project webpage or installing a pre-built package
+provided by your Linux distributor:
+    * GCC (preferably v3.2.x or v3.3.x; older versions are unsupported) 
+    * GNU Make
+    * GNU Binutils
+    * Development install of zlib (e.g., zlib-dev)
+    * Development install of Python v2.3 or later (e.g., python-dev)
+    * bridge-utils package (/sbin/brctl)
+    * iproute package (/sbin/ip)
+    * hotplug or udev
+
+[NB. Unless noted otherwise, all the following steps should be
+performed with root privileges.]
+
+1. Download and untar the source tarball file. This will be a
+   file named xen-unstable-src.tgz, or xen-$version-src.tgz.
+   You can also pull the current version from the SCMS
+   that is being used (Bitkeeper, scheduled to change shortly).
+
+    # tar xzf xen-unstable-src.tgz
+
+   Assuming you are using the unstable tree, this will
+   untar into xen-unstable. The rest of the instructions
+   use the unstable tree as an example, substitute the
+   version for unstable.
+
+2. cd to xen-unstable (or whatever you sensibly rename it to).
+   The Linux, netbsd and freebsd kernel source trees are in
+   the $os-$version-xen-sparse directories.
+
+On Linux:
+
+3. For the very first build, or if you want to destroy existing
+   .configs and build trees, perform the following steps:
+
+    # make world
+    # make install
+
+   This will create and install onto the local machine. It will build 
+   the xen binary (xen.gz), and a linux kernel and modules that can be
+   used in both dom0 and an unprivileged guest kernel (vmlinuz-2.6.x-xen),
+   the tools and the documentation.
+
+   You can override the destination for make install by setting DESTDIR 
+   to some value.
+
+   The make command line defaults to building the kernel vmlinuz-2.6.x-xen. 
+   You can override this default by specifying KERNELS=kernelname. For 
+   example, you can make two kernels - linux-2.6.16-xen0 
+   and linux-2.6.16-xenU - which are smaller builds containing only selected 
+   modules, intended primarilly for developers that don't like to wait 
+   for a full -xen kernel to build. The -xenU kernel is particularly small,
+   as it does not contain any physical device drivers, and hence is
+   only useful for guest domains.
+
+   To make these two kernels, simply specify
+
+   KERNELS="linux-2.6.16-xen0 linux-2.6.16-xenU"
+
+   in the make command line.
+
+   If you want to build an x86_32 PAE capable xen and kernel to work
+   on machines with >= 4GB of memory, use XEN_TARGET_X86_PAE=y on the
+   make command line.
+
+4. To rebuild an existing tree without modifying the config:
+    # make dist
+
+   This will build and install xen, kernels, tools, and
+   docs into the local dist/ directory. 
+
+   You can override the destination for make install by setting DISTDIR 
+   to some value.
+
+   make install and make dist differ in that make install does the 
+   right things for your local machine (installing the appropriate 
+   version of hotplug or udev scripts, for example), but make dist 
+   includes all versions of those scripts, so that you can copy the dist 
+   directory to another machine and install from that distribution.
+
+5. To rebuild a kernel with a modified config:
+
+    # make linux-2.6-xen-config CONFIGMODE=menuconfig     (or xconfig)
+    # make linux-2.6-xen-build
+    # make linux-2.6-xen-install
+
+   Depending on your config, you may need to use 'mkinitrd' to create
+   an initial ram disk, just like a native system e.g. 
+    # depmod 2.6.12.6-xen
+    # mkinitrd -v -f --with=aacraid --with=sd_mod --with=scsi_mod 
initrd-2.6.12.6-xen.img 2.6.12.6-xen

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