Backported patches for stable 4.4 and 4.9

Attachments:

• 0001-xen-events-reset-affinity-of-2-level-event-when-tear.patch (text/x-patch — 4.0 KB)
• 0002-xen-events-don-t-unmask-an-event-channel-when-an-eoi.patch (text/x-patch — 11.4 KB)
• 0003-xen-events-avoid-handling-the-same-event-on-two-cpus.patch (text/x-patch — 4.0 KB)
• OpenPGP_0xB0DE9DD628BF132F.asc (application/pgp-keys — 3.0 KB)
• OpenPGP_signature.sig (application/pgp-signature — 495 bytes)