Re: [tlug] about sanitize_e820_map()

[Josh Glover <jmglov@example.com>]

On 16/01/06, Toshiyuki Ishii <psbfan@example.com> wrote:

> > On 15/01/06, Stephen J. Turnbull <stephen@example.com> wrote:
> >
> > > This isn't exactly a kernel hackers group.  There are a few such here,
> > > but it's unlikely that they're familiar with every little bit.
>
> I'm so sorry for disturbing the list.

No, you are not disturbing the list; Steve was merely pointing out
that your question might not get answered here.

All Linux / UNIX / Open Source-related questions are welcome. Says so
right in our List Policy doc. :)

http://tlug.jp/listpolicy.php#about

If you ask a question that most people don't care about, they can just
instruct their MUA to ignore the thread, so no problem.

> > You should, however, take Steve's advise about what info you need to
> > provide so that we can help you.
[...]
> > I will assume that you are concerned with the 2.6 kernel.
>
> I use 2.6.13 kernel.
> I have behaved rudely not to present information about my question.

No, not rudely. You just were not aware, perhaps, of the requirements
for getting help on a erai technical mailing list such as TLUG. ;)

Seriously, Steve was educating you for your own good, not scolding
you. He tends to only scold those of us who should know better, and
ignore annoying newbies who lack a Clew. (Sorry, couldn't resist the
Baroque spelling; I guess I should read less Neal Stephenson!) So if
Steve suggests something to you, you must not fit in the annoying
clueless newbie category. The fact that you are asking a question
about a pretty low-level bit of the kernel would provide more evidence
to support that fact. :)

> > I first made an identifier search on LXR against the 2.6.11 source
> > tree to find the relevant code:

OK, let's see if I can find 2.6.13 in LXR...

Not on the main page, but Google found another LXR instance here:

http://www.linux-m32r.org/lxr/http/source/arch/i386/kernel/setup.c?v=2.6.13

> And the code I have qestion is just what/where? you pointed out.
> (I left out your citation because I should disturb the list again.)

Maybe I misunderstand your question, but your code is here:

http://www.linux-m32r.org/lxr/http/source/arch/i386/kernel/setup.c?v=2.6.13#L542

(Looks like it moved a few lines down in the jump from 2.6.11 to .13)

> As another version and another patch level kernel uses the same code, I found,
> I thought that probably I was misunderstanding.

The conditions seem not to have changed any, so my explanation should hold.

For the sake of the archives, please do reply and let the list know
whether I was correct or not. :)

Cheers,
Josh