Re: [Xen-devel] [PATCH v7 07/10] xen/common: move the memory_mapping DOMCTL hypercall to common code

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Arianna,

On 05/05/2014 04:54 PM, Arianna Avanzini wrote:
> +            ret = iomem_permit_access(d, mfn, mfn_end);
> +            if ( !ret )
> +            {
> +                ret = map_mmio_regions(d, gfn, nr_mfns, _mfn(mfn));

The code of map_mmio_regions differs between x86 on ARM.

On the former architecture, if Xen fails to map a page, it will unmap
all the previous page. It's not the case on ARM.

Regards,

-- 
Julien Grall

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