Re: [Xen-devel] [PATCH 12/13] xen/events: Add the hypervisor interface for the FIFO-based event channels

[David Vrabel <david.vrabel@xxxxxxxxxx>]

On 24/09/13 16:06, Konrad Rzeszutek Wilk wrote:
> On Fri, Sep 13, 2013 at 06:00:00PM +0100, David Vrabel wrote:
>> From: David Vrabel <david.vrabel@xxxxxxxxxx>
>>
>> Add the hypercall sub-ops and the structures for the shared data used
>> in the FIFO-based event channel ABI.
> 
> And you should include an URL to the design document. Or include the
> text version of it (if possible) in this description.

The design doc is 16 pages and has diagrams, not something that could be
included in a commit message.  I'll add a link.

>> +struct evtchn_fifo_control_block {
>> +    uint32_t     ready;
>> +    uint32_t     _rsvd1;
> 
> 
> The design document looks to have 'READY' be 2 bytes? Octet 0 and 1?
> (figure 2).

The docs need to be updated -- we only require the guest to be able to
do atomic ops on 32-bit values.

David

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