Re: [PATCH 2/4] iommu/vt-d: Don't consider copied context entries as present

[David Woodhouse]

On Thu, 2015-06-11 at 15:47 +0200, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@xxxxxxx>
> 
> Hide the copied context entries from the IOMMU driver by
> considering them as non-present. This is implemented by
> setting the first AVL bit (bit 67) in the context entry to
> one. If this bit is set, the context_present() function
> returns false.
> 
> Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>

In the extended context entry, bit 67 is the PGE bit. There are no bits
which are available to software, to my knowledge.

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@xxxxxxxxx                              Intel Corporation

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