From owner-freebsd-hackers  Thu Mar  5 22:59:54 1998
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To: Ustimenko Semen <semen@iclub.nsu.ru>
cc: Mike Smith <mike@smith.net.au>, freebsd-hackers@FreeBSD.ORG
Subject: Re: Are mbufs aligned or bounded on something? 
In-reply-to: Your message of "Fri, 06 Mar 1998 10:37:28 +0600."
             <Pine.BSF.3.96.980306102709.4977A-100000@iclub.nsu.ru> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Thu, 05 Mar 1998 22:54:13 -0800
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>By the way: if i need aligned memory, should i use contigmalloc(), or
>better to use malloc, and align block by hands?

   All memory returned by malloc() is guaranteed to be power of two aligned
and won't span a page boundry if <= a page in size; there are many places in
the kernel that rely on this.
   If you need a large chunk of memory that must be physically contiguous,
then use contigmalloc().

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project

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