Re: [Xen-devel] [PATCH v3 12/13] x86: add iommu_ops to modify and flush IOMMU mappings

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, Jul 17, 2018 at 02:38:15PM +0100, Paul Durrant wrote:
[...]
> +static int iommuop_unmap(struct xen_iommu_op_unmap *op)
> +{
[...]
> +
> +    if ( !iommu_unmap_page(currd, bfn) )
> +        rc = -EIO;

So it is an error to unmap the page successfully? In fact this same line
is changed in the next patch. I suppose the code here is wrong.

Wei.

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