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authorRusty Russell <rusty@rustcorp.com.au>2007-07-26 10:41:02 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-26 11:35:16 -0700
commitf938d2c892db0d80d144253d4a7b7083efdbedeb (patch)
tree1fbc946a9fb59827001a5d4d5224abe5e624e605 /drivers/lguest/hypercalls.c
parentdfb68689bf3e3d31dc9fb5c2bde5379a4ca9b0ec (diff)
downloadlinux-f938d2c892db0d80d144253d4a7b7083efdbedeb.tar.bz2
lguest: documentation I: Preparation
The netfilter code had very good documentation: the Netfilter Hacking HOWTO. Noone ever read it. So this time I'm trying something different, using a bit of Knuthiness. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/lguest/hypercalls.c')
-rw-r--r--drivers/lguest/hypercalls.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/lguest/hypercalls.c b/drivers/lguest/hypercalls.c
index ea52ca451f74..fb546b046445 100644
--- a/drivers/lguest/hypercalls.c
+++ b/drivers/lguest/hypercalls.c
@@ -1,5 +1,10 @@
-/* Actual hypercalls, which allow guests to actually do something.
- Copyright (C) 2006 Rusty Russell IBM Corporation
+/*P:500 Just as userspace programs request kernel operations through a system
+ * call, the Guest requests Host operations through a "hypercall". You might
+ * notice this nomenclature doesn't really follow any logic, but the name has
+ * been around for long enough that we're stuck with it. As you'd expect, this
+ * code is basically a one big switch statement. :*/
+
+/* Copyright (C) 2006 Rusty Russell IBM Corporation
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by