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Re: [Xen-devel] Failure to get memory for GATT table, again

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Failure to get memory for GATT table, again
From: Jacob Gorm Hansen <jacobg@xxxxxxx>
Date: Wed, 2 Feb 2005 01:55:55 +0100
Cc: Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxxx>
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On Wed, Feb 02, 2005 at 12:01:41AM -0000, Ian Pratt wrote:

> dma_alloc_coherent should be calling xen_contig_mem which should turn
> the pages into ones that are owned by dom0 and contiguous. Add some
> dubugging to xen_contig_mem to see if you're getting there.

xen_contig_mem is called correctly, and page ownerships are set to be dom0.
However, the mmu-update that goes wrong attempts to do a MMUEXT_SET_FOREIGNDOM
to a domain with number 32753, and that fails because the owner is 0. Who is
in domain 32753, and why does dom0 wish to map these pages to a foreign domain?

Jacob


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