7.1 to 7.2 upgrade question

[Miroslav Lachman]

Eygene Ryabinkin wrote:
> Renato,
[...]
>>I don't know if it's officially supported, but I did an hybrid upgrade
>>using freebsd-update for the base and building the custom kernel
>>from sources, it worked fine and is still much faster than build
>>everything.
> 
> 
> In principle, you can run into some errors, like KVM size mismatches
> (and other ABI changes) if your kernel (that you build from sources) and
> updated base will differ.  But you'll immediately notice it ;))  And for
> most cases such way should work fine.

Just a question: How can kernel be different, if it is build from the 
same sources (7.2-RELEASE)? freebsd-update updates the sources too (if 
old sources are installed in /usr/src), or am I wrong?

Miroslav Lachman