Re: [Xen-devel] [PATCH v5 3/4] x86/ioreq server: Add HVMOP to map guest ram with p2m_ioreq_server to an ioreq server.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 09.08.16 at 09:39, <yu.c.zhang@xxxxxxxxxxxxxxx> wrote:
> On 8/8/2016 11:40 PM, Jan Beulich wrote:
>>>>> On 12.07.16 at 11:02, <yu.c.zhang@xxxxxxxxxxxxxxx> wrote:
>>> +    rc = -ENOENT;
>>> +    list_for_each_entry ( s,
>>> +                          &d->arch.hvm_domain.ioreq_server.list,
>>> +                          list_entry )
>>> +    {
>>> +        if ( s == d->arch.hvm_domain.default_ioreq_server )
>>> +            continue;
>>> +
>>> +        if ( s->id == id )
>>> +        {
>>> +            rc = p2m_set_ioreq_server(d, flags, s);
>>> +            if ( rc == 0 )
>>> +                dprintk(XENLOG_DEBUG, "%u %s type HVMMEM_ioreq_server.\n",
>>> +                         s->id, (flags != 0) ? "mapped to" : "unmapped 
>>> from");
>> Is this really useful?
> 
> Sorry, are you referring to this debug message?
> I believe it helps, especially when multiple ioreq servers are 
> claiming/disclaiming their ownership of
> the HVMMEM_ioreq_server. :)

Well, that's a configuration bug anyway right now, so I'm not really
with you. But in the end it'll be Paul to judge ...

Jan


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