Re: [Xen-devel] [PATCH v2] xen: add support for MSI message groups

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 02/27/2014 01:15 PM, Roger Pau Monne wrote:
> Add support for MSI message groups for Xen Dom0 using the
> MAP_PIRQ_TYPE_MULTI_MSI pirq map type.
>
> In order to keep track of which pirq is the first one in the group all
> pirqs in the MSI group except for the first one have the newly
> introduced PIRQ_MSI_GROUP flag set. This prevents calling
> PHYSDEVOP_unmap_pirq on them, since the unmap must be done with the
> first pirq in the group.
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>



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