From: Andi Kleen <andi@firstfloor.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andi Kleen <andi@firstfloor.org>,
Yasunori Goto <y-goto@jp.fujitsu.com>,
Gary Hade <garyhade@us.ibm.com>,
linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Badari Pulavarty <pbadari@us.ibm.com>, Mel Gorman <mel@csn.ul.ie>,
Chris McDermott <lcm@us.ibm.com>,
linux-kernel@vger.kernel.org, x86@kernel.org,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH] [RESEND] x86_64: add memory hotremove config option
Date: Mon, 8 Sep 2008 11:36:19 +0200 [thread overview]
Message-ID: <20080908093619.GC26079@one.firstfloor.org> (raw)
In-Reply-To: <200809081552.50126.nickpiggin@yahoo.com.au>
> You use non-linear mappings for the kernel, so that kernel data is
> not tied to a specific physical address. AFAIK, that is the only way
> to really do it completely (like the fragmentation problem).
Even with that there are lots of issues, like keeping track of
DMAs or handling executing kernel code.
>
> Of course, I don't think that would be a good idea to do that in the
> forseeable future.
Agreed.
-Andi
--
ak@linux.intel.com
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <andi@firstfloor.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andi Kleen <andi@firstfloor.org>,
Yasunori Goto <y-goto@jp.fujitsu.com>,
Gary Hade <garyhade@us.ibm.com>,
linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Badari Pulavarty <pbadari@us.ibm.com>, Mel Gorman <mel@csn.ul.ie>,
Chris McDermott <lcm@us.ibm.com>,
linux-kernel@vger.kernel.org, x86@kernel.org,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH] [RESEND] x86_64: add memory hotremove config option
Date: Mon, 8 Sep 2008 11:36:19 +0200 [thread overview]
Message-ID: <20080908093619.GC26079@one.firstfloor.org> (raw)
In-Reply-To: <200809081552.50126.nickpiggin@yahoo.com.au>
> You use non-linear mappings for the kernel, so that kernel data is
> not tied to a specific physical address. AFAIK, that is the only way
> to really do it completely (like the fragmentation problem).
Even with that there are lots of issues, like keeping track of
DMAs or handling executing kernel code.
>
> Of course, I don't think that would be a good idea to do that in the
> forseeable future.
Agreed.
-Andi
--
ak@linux.intel.com
--
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next prev parent reply other threads:[~2008-09-08 9:32 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-05 17:21 [PATCH] [RESEND] x86_64: add memory hotremove config option Gary Hade
2008-09-05 17:21 ` Gary Hade
2008-09-05 17:44 ` Ingo Molnar
2008-09-05 17:44 ` Ingo Molnar
2008-09-05 18:14 ` Badari Pulavarty
2008-09-05 18:14 ` Badari Pulavarty
2008-09-05 18:17 ` Ingo Molnar
2008-09-05 18:17 ` Ingo Molnar
2008-09-08 21:52 ` [PATCH] Cleanup to make remove_memory() arch neutral Badari Pulavarty
2008-09-08 21:52 ` Badari Pulavarty
2008-09-09 0:56 ` Andrew Morton
2008-09-09 0:56 ` Andrew Morton
2008-09-09 1:14 ` Randy Dunlap
2008-09-09 1:14 ` Randy Dunlap
2008-09-09 1:21 ` Yasunori Goto
2008-09-09 1:21 ` Yasunori Goto
2008-09-09 15:12 ` Badari Pulavarty
2008-09-09 15:12 ` Badari Pulavarty
2008-09-08 21:56 ` [PATCH] x86: add memory hotremove config option Badari Pulavarty
2008-09-08 21:56 ` Badari Pulavarty
2008-09-05 18:04 ` [PATCH] [RESEND] x86_64: " Andi Kleen
2008-09-05 18:04 ` Andi Kleen
2008-09-05 18:31 ` Badari Pulavarty
2008-09-05 18:31 ` Badari Pulavarty
2008-09-05 18:54 ` Andi Kleen
2008-09-05 18:54 ` Andi Kleen
2008-09-05 22:34 ` Badari Pulavarty
2008-09-05 22:34 ` Badari Pulavarty
2008-09-05 19:53 ` Gary Hade
2008-09-05 19:53 ` Gary Hade
2008-09-05 20:04 ` Andi Kleen
2008-09-05 20:04 ` Andi Kleen
2008-09-05 21:54 ` Gary Hade
2008-09-05 21:54 ` Gary Hade
2008-09-06 0:01 ` Andi Kleen
2008-09-06 0:01 ` Andi Kleen
2008-09-06 7:06 ` Yasunori Goto
2008-09-06 7:06 ` Yasunori Goto
2008-09-06 8:53 ` Andi Kleen
2008-09-06 8:53 ` Andi Kleen
2008-09-08 5:52 ` Nick Piggin
2008-09-08 5:52 ` Nick Piggin
2008-09-08 9:36 ` Andi Kleen [this message]
2008-09-08 9:36 ` Andi Kleen
2008-09-08 9:46 ` Nick Piggin
2008-09-08 9:46 ` Nick Piggin
2008-09-08 10:30 ` Andi Kleen
2008-09-08 10:30 ` Andi Kleen
2008-09-08 11:19 ` Nick Piggin
2008-09-08 11:19 ` Nick Piggin
2008-09-08 11:30 ` Andi Kleen
2008-09-08 11:30 ` Andi Kleen
2008-09-08 13:48 ` Nick Piggin
2008-09-08 13:48 ` Nick Piggin
2008-09-06 14:33 ` Ingo Molnar
2008-09-06 14:33 ` Ingo Molnar
2008-09-06 16:00 ` kamezawa.hiroyu
2008-09-06 16:00 ` kamezawa.hiroyu
2008-09-06 16:05 ` kamezawa.hiroyu
2008-09-06 16:05 ` kamezawa.hiroyu
2008-09-06 16:17 ` Ingo Molnar
2008-09-06 16:17 ` Ingo Molnar
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