From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: linux-kernel@vger.kernel.org, clameter@engr.sgi.com,
apw@shadowen.org, akpm@osdl.org
Subject: Re: [RFC] [PATCH] virtual memmap on sparsemem v3 [2/4] generic virtual mem_map on sparsemem
Date: Sat, 9 Dec 2006 13:05:47 +0100 [thread overview]
Message-ID: <20061209120547.GB10380@osiris.ibm.com> (raw)
In-Reply-To: <20061208160454.33fedd3f.kamezawa.hiroyu@jp.fujitsu.com>
> +#ifdef CONFIG_SPARSEMEM_VMEMMAP
> +#if (((BITS_PER_LONG/4) * PAGES_PER_SECTION) % PAGE_SIZE) != 0
> +#error "PAGE_SIZE/SECTION_SIZE relationship is not suitable for vmem_map"
> +#endif
Why the BITS_PER_LONG/4? Or to put in other words: why not simply
PAGES_PER_SECTION % PAGE_SIZE != 0 ?
next prev parent reply other threads:[~2006-12-09 12:05 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-08 6:56 [RFC] [PATCH] virtual memmap on sparsemem v3 [0/4] introduction KAMEZAWA Hiroyuki
2006-12-08 7:01 ` [RFC] [PATCH] virtual memmap on sparsemem v3 [1/4] map and unmap KAMEZAWA Hiroyuki
2006-12-09 0:28 ` Andrew Morton
2006-12-09 2:43 ` KAMEZAWA Hiroyuki
2006-12-09 4:52 ` KAMEZAWA Hiroyuki
2006-12-08 7:04 ` [RFC] [PATCH] virtual memmap on sparsemem v3 [2/4] generic virtual mem_map on sparsemem KAMEZAWA Hiroyuki
2006-12-09 12:05 ` Heiko Carstens [this message]
2006-12-09 13:17 ` KAMEZAWA Hiroyuki
2006-12-11 6:44 ` KAMEZAWA Hiroyuki
2006-12-08 7:07 ` [RFC] [PATCH] virtual memmap on sparsemem v3 [3/4] static virtual mem_map KAMEZAWA Hiroyuki
2006-12-09 0:30 ` Andrew Morton
2006-12-09 2:49 ` KAMEZAWA Hiroyuki
2006-12-09 3:33 ` Andrew Morton
2006-12-09 3:41 ` KAMEZAWA Hiroyuki
2006-12-09 4:53 ` KAMEZAWA Hiroyuki
2006-12-08 7:08 ` [RFC] [PATCH] virtual memmap on sparsemem v3 [4/4] ia64 support KAMEZAWA Hiroyuki
2006-12-09 4:55 ` KAMEZAWA Hiroyuki
2006-12-09 11:51 ` [RFC] [PATCH] virtual memmap on sparsemem v3 [0/4] introduction Heiko Carstens
2006-12-09 13:21 ` KAMEZAWA Hiroyuki
2006-12-10 19:47 ` Bob Picco
2006-12-11 0:43 ` KAMEZAWA Hiroyuki
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20061209120547.GB10380@osiris.ibm.com \
--to=heiko.carstens@de.ibm.com \
--cc=akpm@osdl.org \
--cc=apw@shadowen.org \
--cc=clameter@engr.sgi.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.