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Date: Thu, 25 Mar 2010 14:09:49 +0530
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Subject: Re: [PATCH 1/2] mm/vmalloc: Export purge_vmap_area_lazy()
From: MJ embd <mj.embd@gmail.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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On Wed, Mar 24, 2010 at 1:26 PM, Benjamin Herrenschmidt
<benh@kernel.crashing.org> wrote:
> Some powerpc code needs to ensure that all previous iounmap/vunmap has
> really been flushed out of the MMU hash table. Without that, various
> hotplug operations may fail when trying to return those pieces to
> the hypervisor due to existing active mappings.
Are you talking about KVM or any other hypervisor ?