path: root/Documentation/uml
diff options
authorAdrian Bunk <bunk@stusta.de>2006-10-03 22:17:48 +0200
committerAdrian Bunk <bunk@stusta.de>2006-10-03 22:17:48 +0200
commitbf6ee0ae494596aaf311e8430684db85d1d2f25c (patch)
tree80af10d1539d20ed00ffe19bb5af51cd6a976a19 /Documentation/uml
parent0a8fe0d756fba2953462cec6db09c81dd732d0b5 (diff)
remove mentionings of devfs in documentation
Now that devfs is removed, there's no longer any need to document how to do this or that with devfs. This patch includes some improvements by Joe Perches. Signed-off-by: Adrian Bunk <bunk@stusta.de>
Diffstat (limited to 'Documentation/uml')
1 files changed, 2 insertions, 52 deletions
diff --git a/Documentation/uml/UserModeLinux-HOWTO.txt b/Documentation/uml/UserModeLinux-HOWTO.txt
index 544430e39980..b7390000bf28 100644
--- a/Documentation/uml/UserModeLinux-HOWTO.txt
+++ b/Documentation/uml/UserModeLinux-HOWTO.txt
@@ -157,7 +157,7 @@
13. What to do when UML doesn't work
13.1 Strange compilation errors when you build from source
- 13.2 UML hangs on boot after mounting devfs
+ 13.2 (obsolete)
13.3 A variety of panics and hangs with /tmp on a reiserfs filesystem
13.4 The compile fails with errors about conflicting types for 'open', 'dup', and 'waitpid'
13.5 UML doesn't work when /tmp is an NFS filesystem
@@ -379,31 +379,6 @@
bug fixes and enhancements that have gone into subsequent releases.
- If you build your own kernel, and want to boot it from one of the
- filesystems distributed from this site, then, in nearly all cases,
- devfs must be compiled into the kernel and mounted at boot time. The
- exception is the SuSE filesystem. For this, devfs must either not be
- in the kernel at all, or "devfs=nomount" must be on the kernel command
- line. Any disagreement between the kernel and the filesystem being
- booted about whether devfs is being used will result in the boot
- getting no further than single-user mode.
- If you don't want to use devfs, you can remove the need for it from a
- filesystem by copying /dev from someplace, making a bunch of /dev/ubd
- devices:
- UML# for i in 0 1 2 3 4 5 6 7; do mknod ubd$i b 98 $i; done
- and changing /etc/fstab and /etc/inittab to refer to the non-devfs
- devices.
22..22.. CCoommppiilliinngg aanndd iinnssttaalllliinngg kkeerrnneell mmoodduulleess
UML modules are built in the same way as the native kernel (with the
@@ -839,9 +814,7 @@
+o None - device=none
- This causes the device to disappear. If you are using devfs, the
- device will not appear in /dev. If not, then attempts to open it
- will return -ENODEV.
+ This causes the device to disappear.
@@ -3898,29 +3871,6 @@
- 1133..22.. UUMMLL hhaannggss oonn bboooott aafftteerr mmoouunnttiinngg ddeevvffss
- The boot looks like this:
- VFS: Mounted root (ext2 filesystem) readonly.
- Mounted devfs on /dev
- You're probably running a recent distribution on an old machine. I
- saw this with the RH7.1 filesystem running on a Pentium. The shared
- library loader, ld.so, was executing an instruction (cmove) which the
- Pentium didn't support. That instruction was apparently added later.
- If you run UML under the debugger, you'll see the hang caused by one
- instruction causing an infinite SIGILL stream.
- The fix is to boot UML on an older filesystem.
1133..33.. AA vvaarriieettyy ooff ppaanniiccss aanndd hhaannggss wwiitthh //ttmmpp oonn aa rreeiisseerrffss ffiilleessyyss--