linux-kernel - Re: [RFC PATCH 0/3] allow fallback to swiotlb on hw iommu init failures

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Message-ID: <87hbtmy6jc.fsf@basil.nowhere.org>
Date:	Mon, 26 Oct 2009 08:10:31 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Chris Wright <chrisw@...s-sol.org>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/3] allow fallback to swiotlb on hw iommu init failures

Chris Wright <chrisw@...s-sol.org> writes:

> This short series gives us the ability to allocate the swiotlb and then
> conditionally free it if we discover it isn't needed.  This allows us to
> put swiotlb to use when the hw iommu fails to initialize properly.
>
> This needs some changes to the bootmem allocator to give the ability to
> free reserved bootmem directly to the page allocator after bootmem is
> torn down.

You forgot to state what motivated you to that change?

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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