From: Michael Ellerman <michael@ellerman.id.au>
To: Mark Nelson <markn@au1.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v2] powerpc: Track backing pages allocated by vmemmap_populate()
Date: Tue, 13 Apr 2010 15:24:17 +1000 [thread overview]
Message-ID: <1271136257.13902.9.camel@concordia> (raw)
In-Reply-To: <201004131416.23941.markn@au1.ibm.com>
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On Tue, 2010-04-13 at 14:16 +1000, Mark Nelson wrote:
> We need to keep track of the backing pages that get allocated by
> vmemmap_populate() so that when we use kdump, the dump-capture kernel knows
> where these pages are.
>
> We use a linked list of structures that contain the physical address of the
> backing page and corresponding virtual address to track the backing pages.
> We can use an hlist to save space, because we never remove nodes.
What if we remove_memory() ? Or does that not do what I think it does?
cheers
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next prev parent reply other threads:[~2010-04-13 5:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-26 7:12 [PATCH] powerpc: Track backing pages used allocated by vmemmap_populate() Mark Nelson
2010-04-13 4:16 ` [PATCH v2] powerpc: Track backing pages " Mark Nelson
2010-04-13 5:24 ` Michael Ellerman [this message]
2010-04-13 6:02 ` Mark Nelson
2010-04-13 11:16 ` Benjamin Herrenschmidt
2010-04-13 23:38 ` Mark Nelson
2010-04-22 2:21 ` [PATCH v3] " Mark Nelson
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