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| author | Rusty Russell <rusty@rustcorp.com.au> | 2007-07-26 10:41:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-26 11:35:16 -0700 |
| commit | f938d2c892db0d80d144253d4a7b7083efdbedeb (patch) | |
| tree | 1fbc946a9fb59827001a5d4d5224abe5e624e605 /drivers/lguest/page_tables.c | |
| parent | dfb68689bf3e3d31dc9fb5c2bde5379a4ca9b0ec (diff) | |
| download | lwn-f938d2c892db0d80d144253d4a7b7083efdbedeb.tar.gz lwn-f938d2c892db0d80d144253d4a7b7083efdbedeb.zip | |
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/page_tables.c')
| -rw-r--r-- | drivers/lguest/page_tables.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c index 1b0ba09b1269..f9ca50d80466 100644 --- a/drivers/lguest/page_tables.c +++ b/drivers/lguest/page_tables.c @@ -1,5 +1,11 @@ -/* Shadow page table operations. - * Copyright (C) Rusty Russell IBM Corporation 2006. +/*P:700 The pagetable code, on the other hand, still shows the scars of + * previous encounters. It's functional, and as neat as it can be in the + * circumstances, but be wary, for these things are subtle and break easily. + * The Guest provides a virtual to physical mapping, but we can neither trust + * it nor use it: we verify and convert it here to point the hardware to the + * actual Guest pages when running the Guest. :*/ + +/* Copyright (C) Rusty Russell IBM Corporation 2006. * GPL v2 and any later version */ #include <linux/mm.h> #include <linux/types.h> |