• Roger Pau Monne's avatar
    xen: add support for MSI message groups · 4892c9b4
    Roger Pau Monne authored
    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.
    Signed-off-by: default avatarRoger Pau Monné <roger.pau@citrix.com>
    Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
    Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
    4892c9b4
events_base.c 37.8 KB