From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <ian.campbell@citrix.com>
Subject: Re: Question about DMA on 1:1 mapping dom0 of arm64
Date: Fri, 17 Apr 2015 15:38:13 +0100
Message-ID: <1429281493.25195.341.camel@citrix.com>
References: <20150417112411.GA13595@cbz-thinkpad>
	<alpine.DEB.2.02.1504171521260.7690@kaball.uk.xensource.com>
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To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad@kernel.org>, Chen Baozi <cbz@baozis.org>, julien.grall@linaro.org, xen-devel@lists.xen.org
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On Fri, 2015-04-17 at 15:32 +0100, Stefano Stabellini wrote:
> I think that given that dom0 is mapped 1:1 on ARM, the easiest and best
> fix would be to simply allocate memory under 4G to begin with.

Not necessarily best, see my reply (hint: dom0 might not have RAM under
4GB even if the host does).