bak

Author: cirosantilli

buildroot.md

@@ -203,3 +203,16 @@ Just worked on a PI2 via UART. No `sshd` daemon though.
 
 - <https://bugs.busybox.net/show_bug.cgi?id=9226>
 - <http://bbs.t-firefly.com/forum.php?mod=viewthread&tid=1777>
+
+## UML
+
+## User mode Linux
+
+TODO: supported or not?
+
+Direct `linux` in rootfs failed.
+
+- <http://lists.busybox.net/pipermail/buildroot/2013-December/085486.html>
+- <http://oss.sgi.com/LDP/HOWTO/SSI-UML-HOWTO/buildroot.html>
+- <https://wiki.archlinux.org/index.php/User-mode_Linux#Build_rootfs_image>
+- <https://unix.stackexchange.com/questions/73203/how-to-create-rootfs-for-user-mode-linux-on-fedora-18>

kernel/README.md

@@ -12,20 +12,20 @@
     1. [Device driver](device-driver.md)
 1.  [Virtual address space](virtual-address-space.md)
 1.  [Scheduling](scheduling.md)
-1.  Virtualization
-    1. [User mode Linux](user-mode-linux.md)
-    1. [Lguest](lguest.md)
+1.  [Virtualization](virtualization.md)
+    1.  [User mode Linux](user-mode-linux.md)
+    1.  [LXC](lxc.md)
+    1.  [Lguest](lguest.md)
 1.  [Debug](debug.md)
 1.  [Style guide](style-guide.md)
 1.  [Trivia](trivia.md)
 
 WIP
 
-1. [LXC](lxc.md)
-1. [Kconfig](kconfig.md)
-1. [Boot command line parameters](boot-command-line-parameters.md)
-1. [init](init.md)
-1. [Panic](panic.md)
+1.  [Kconfig](kconfig.md)
+1.  [Boot command line parameters](boot-command-line-parameters.md)
+1.  [init](init.md)
+1.  [Panic](panic.md)
 
 ## User programs
 

kernel/user-mode-linux.md

@@ -18,6 +18,14 @@ Before was a fork, later merged in 2.6 as a new architecture under `arch/um`.
 
 <http://askubuntu.com/questions/33958/how-to-correctly-start-a-ubuntu-user-mode-linux-from-the-command-line>
 
+Not very active apparently: <https://askubuntu.com/questions/796512/user-mode-linux-on-xenial>
+
+## Example
+
+<https://unix.stackexchange.com/questions/73203/how-to-create-rootfs-for-user-mode-linux-on-fedora-18> Almost works on a Buildroot image with UML on host, just needed to patch `inittab` with:
+
+    
+
 Quickstart tested on Kernel 4.0 source on a 3.13 host: TODO get working.
 
     make mrproper

kernel/virtualization.md

@@ -0,0 +1,16 @@
+# Virtualization
+
+The kernel has a few virtualization subsystems:
+
+- UML
+- LXC
+- KVM
+
+Comparisons:
+
+- <https://unix.stackexchange.com/questions/90078/which-one-is-lighter-security-and-cpu-wise-lxc-versus-uml/93924#93924>
+- <https://stackoverflow.com/questions/20578039/difference-between-kvm-and-lxc>
+
+## KVM
+
+Optionally used used by QEMU.