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authorMauro Carvalho Chehab <mchehab+huawei@kernel.org>2020-02-10 07:02:41 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2020-02-12 20:09:48 +0100
commit72f8a49dc8b9e97a7986b0e6eced00a1a2e28996 (patch)
tree9b3095fdaa7c3d78f8d18ac83a8edc82af9263d6 /Documentation/virt/uml
parent7d94ab169b8f047ad61ff6ea8e3e7602d0516623 (diff)
docs: virt: user_mode_linux.rst: update compiling instructions
Instead of pointing for a pre-2.4 and a seaparate patch, update it to match current upstream, as UML was merged a long time ago. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation/virt/uml')
-rw-r--r--Documentation/virt/uml/user_mode_linux.rst62
1 files changed, 9 insertions, 53 deletions
diff --git a/Documentation/virt/uml/user_mode_linux.rst b/Documentation/virt/uml/user_mode_linux.rst
index 6085d2c0f8a8..e0632d80753e 100644
--- a/Documentation/virt/uml/user_mode_linux.rst
+++ b/Documentation/virt/uml/user_mode_linux.rst
@@ -5,7 +5,7 @@ User Mode Linux HOWTO
=====================
:Author: User Mode Linux Core Team
-:Last-updated: Mon Nov 18 14:16:16 EST 2002
+:Last-updated: Sat Jan 25 16:07:55 CET 2020
This document describes the use and abuse of Jeff Dike's User Mode
Linux: a port of the Linux kernel as a normal Intel Linux process.
@@ -223,23 +223,15 @@ Linux: a port of the Linux kernel as a normal Intel Linux process.
Compiling the user mode kernel is just like compiling any other
- kernel. Let's go through the steps, using 2.4.0-prerelease (current
- as of this writing) as an example:
-
-
- 1. Download the latest UML patch from
- the download page <http://user-mode-linux.sourceforge.net/
-
- In this example, the file is uml-patch-2.4.0-prerelease.bz2.
+ kernel.
- 2. Download the matching kernel from your favourite kernel mirror,
+ 1. Download the latest kernel from your favourite kernel mirror,
such as:
- ftp://ftp.ca.kernel.org/pub/kernel/v2.4/linux-2.4.0-prerelease.tar.bz2
-
+ https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/linux-5.4.14.tar.xz
- 3. Make a directory and unpack the kernel into it::
+ 2. Make a directory and unpack the kernel into it::
host%
mkdir ~/uml
@@ -248,21 +240,10 @@ Linux: a port of the Linux kernel as a normal Intel Linux process.
cd ~/uml
host%
- tar -xzvf linux-2.4.0-prerelease.tar.bz2
-
-
-
- 4. Apply the patch using::
-
- host%
- cd ~/uml/linux
-
- host%
- bzcat uml-patch-2.4.0-prerelease.bz2 | patch -p1
+ tar xvf linux-5.4.14.tar.xz
-
- 5. Run your favorite config; ``make xconfig ARCH=um`` is the most
+ 3. Run your favorite config; ``make xconfig ARCH=um`` is the most
convenient. ``make config ARCH=um`` and ``make menuconfig ARCH=um``
will work as well. The defaults will give you a useful kernel. If
you want to change something, go ahead, it probably won't hurt
@@ -276,34 +257,9 @@ Linux: a port of the Linux kernel as a normal Intel Linux process.
- 6. Finish with ``make linux ARCH=um``: the result is a file called
+ 4. Finish with ``make linux ARCH=um``: the result is a file called
``linux`` in the top directory of your source tree.
- Make sure that you don't build this kernel in /usr/src/linux. On some
- distributions, /usr/include/asm is a link into this pool. The user-
- mode build changes the other end of that link, and things that include
- <asm/anything.h> stop compiling.
-
- The sources are also available from cvs at the project's cvs page,
- which has directions on getting the sources. You can also browse the
- CVS pool from there.
-
- If you get the CVS sources, you will have to check them out into an
- empty directory. You will then have to copy each file into the
- corresponding directory in the appropriate kernel pool.
-
- If you don't have the latest kernel pool, you can get the
- corresponding user-mode sources with::
-
-
- host% cvs co -r v_2_3_x linux
-
-
-
-
- where 'x' is the version in your pool. Note that you will not get the
- bug fixes and enhancements that have gone into subsequent releases.
-
2.2. Compiling and installing kernel modules
---------------------------------------------
@@ -416,7 +372,7 @@ Linux: a port of the Linux kernel as a normal Intel Linux process.
3.1. Running UML
-----------------
- It runs on 2.2.15 or later, and all 2.4 kernels.
+ It runs on 2.2.15 or later, and all kernel versions since 2.4.
Booting UML is straightforward. Simply run 'linux': it will try to