Re: [Xen-devel] [PATCH RFC] xen/pvh: use a custom IO bitmap for PVH hardware domains

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 10.04.15 at 03:43, <kevin.tian@xxxxxxxxx> wrote:
>>  From: Roger Pau Monne [mailto:roger.pau@xxxxxxxxxx]
>> Sent: Wednesday, April 08, 2015 8:57 PM
>> @@ -1484,6 +1489,12 @@ int hvm_domain_initialise(struct domain *d)
>>          goto fail1;
>>      d->arch.hvm_domain.io_handler->num_slot = 0;
>> 
>> +    /* Set the default IO Bitmap */
>> +    if ( is_hardware_domain(d) )
>> +        d->arch.hvm_domain.io_bitmap = hvm_hw_io_bitmap;
>> +    else
>> +        d->arch.hvm_domain.io_bitmap = hvm_io_bitmap;
>> +
> 
> if we want to support multiple PVH hardware domains w/ different
> permissions, using global array is not correct here.

There's no such thing like multiple hardware domains. There can
only ever (theoretically that is) be multiple control domains.

Jan


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