linux-toradex.git/Documentation/lguest, branch v2.6.23.2

lguest example launcher truncates block device file to 0 length on problems

2007-09-26T16:22:04+00:00

The function should also use ftruncate64() rather than ftruncate() to prevent
files over 4GB (not uncommon for a root filesystem) being zeroed.

Signed-off-by: Chris Malley 
Signed-off-by: Rusty Russell 
Signed-off-by: Linus Torvalds

lguest: avoid shared libraries mapped over guest memory

2007-08-09T15:14:56+00:00

Some versions of ld.so mmap the shared libraries right in over guest
memory, so compile lguest statically by default.

[ FC7 maps shared libraries very low, where the launcher maps guest's
  physical memory.  Quick fix is to link Launcher static, real fix is
  for 2.6.24. ]

-static is a simple fix. I expect this problem will be more common than we
like, as different distro's make different "improvements" to ld.so

Signed-off-by: Ronald G. Minnich 
Signed-off-by: Rusty Russell 
Signed-off-by: Linus Torvalds

lguest: documentation VII: FIXMEs

2007-07-26T18:35:17+00:00

Documentation: The FIXMEs

Signed-off-by: Rusty Russell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lguest: documentation IV: Launcher

2007-07-26T18:35:17+00:00

Documentation: The Launcher

Signed-off-by: Rusty Russell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lguest: documentation I: Preparation

2007-07-26T18:35:16+00:00

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 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

link lguest example launcher non-static

2007-07-24T19:24:59+00:00

S.Caglar Onur points out that many distributions don't ship a static
zlib.  Unfortunately the launcher currently maps virtual device memory
where shared libraries want to go.

The solution is to pre-scan the args to figure out how much memory we
have, then allocate devices above that, rather than down from the top
possible address.  This also turns out to be simpler.

Signed-off-by: Rusty Russell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lguest: the documentation, example launcher

2007-07-19T17:04:53+00:00

A brief document describing how to use lguest.  Because lguest doesn't have an
ABI we also include an example launcher in the Documentation directory.

[jmorris@namei.org: Fix up nat example in documentation]
Signed-off-by: Rusty Russell 
Cc: Andi Kleen 
Signed-off-by: James Morris 
Cc: Matias Zabaljauregui 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds