On Wed, Nov 25, 2015 at 06:20:20PM +0300, Andrey Smetanin wrote: > The SynIC message protocol mandates that the message slot is claimed > by atomically setting message type to something other than HVMSG_NONE. > If another message is to be delivered while the slot is still busy, > message pending flag is asserted to indicate to the guest that the > hypervisor wants to be notified when the slot is released. > > To make sure the protocol works regardless of where the message > sources are (kernel or userspace), clear the pending flag on SINT ACK > notification, and let the message sources compete for the slot again. > > Signed-off-by: Andrey Smetanin <[email protected]> > CC: Gleb Natapov <[email protected]> > CC: Paolo Bonzini <[email protected]> > CC: "K. Y. Srinivasan" <[email protected]> > CC: Haiyang Zhang <[email protected]> > CC: Vitaly Kuznetsov <[email protected]> > CC: Roman Kagan <[email protected]> > CC: Denis V. Lunev <[email protected]> > CC: [email protected]
Reviewed-by: Roman Kagan <[email protected]> Roman. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
