From: Dave Hansen <haveblue@us.ibm.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
andi@firstfloor.org, "linux-mm@kvack.org" <linux-mm@kvack.org>,
"tony.luck@intel.com" <tony.luck@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
pbadari@us.ibm.com,
"linux-ia64@vger.kernel.org" <linux-ia64@vger.kernel.org>
Subject: Re: [Question] How to represent SYSTEM_RAM in kerenel/resouce.c
Date: Wed, 03 Oct 2007 09:37:13 -0700 [thread overview]
Message-ID: <1191429433.4939.49.camel@localhost> (raw)
In-Reply-To: <20071003103136.addbe839.kamezawa.hiroyu@jp.fujitsu.com>
On Wed, 2007-10-03 at 10:31 +0900, KAMEZAWA Hiroyuki wrote:
>
> i386 and x86_64 registers System RAM as IORESOUCE_MEM |
> IORESOUCE_BUSY.
> ia64 registers System RAM as IORESOURCE_MEM.
>
> Which is better ?
I think we should take system ram out of the iomem file, at least.
'struct resource' is a good, cross-platform structure to use for keeping
track of which memory we have where. So, we can share that structure to
keep track of iomem, or memory hotplug state. But, I'm not sure we
should be intermingling system RAM and iomem like we are now in the same
instance of the structure.
-- Dave
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next prev parent reply other threads:[~2007-10-03 16:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-03 1:31 [Question] How to represent SYSTEM_RAM in kerenel/resouce.c KAMEZAWA Hiroyuki
2007-10-03 1:52 ` Matthew Wilcox
2007-10-03 4:57 ` KAMEZAWA Hiroyuki
2007-11-01 9:21 ` [PATCH] Add IORESOUCE_BUSY flag for System RAM (Re: [Question] How to represent SYSTEM_RAM in kerenel/resouce.c) Yasunori Goto
2007-11-01 16:28 ` Badari Pulavarty
2007-11-06 2:23 ` [PATCH] Add IORESOUCE_BUSY flag for System RAM take 2 Yasunori Goto
2007-10-03 16:37 ` Dave Hansen [this message]
2007-10-03 16:43 ` [Question] How to represent SYSTEM_RAM in kerenel/resouce.c Matthew Wilcox
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