Re: [PATCH] kdump/kexec: calculate note size at compile time

From: Vivek Goyal
Date: Wed Mar 28 2007 - 04:09:24 EST


On Wed, Mar 28, 2007 at 04:13:20PM +0900, Horms wrote:
[..]
>
> DESC is probably a better name that BODY here, I meant to update
> that before posting. An updated version is below.
>
> > > +#define KEXEC_NOTE_BYTES ( (KEXEC_NOTE_HEAD_BYTES * 2) + \
> >
> > Why are we multiplying KEXEC_NOTE_HEAD_BYTES with 2?
>
> The way that the note merging code works in vmcore it assumes that
> the area is a list of notes. And there is a terminating note that
> has all the header values set to 0, and nothing else. So the time 2
> is for the space to store the terminating note.
>

Ok.. Got it. Looks fine to me.

Thanks
Vivek
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/