From 76036a5fc7ca632f805748aeef416355b1d212a3 Mon Sep 17 00:00:00 2001 From: Roman Kagan Date: Fri, 21 Sep 2018 11:22:16 +0300 Subject: hyperv: process POST_MESSAGE hypercall Add handling of POST_MESSAGE hypercall. For that, add an interface to regsiter a handler for the messages arrived from the guest on a particular connection id (IOW set up a message connection in Hyper-V speak). Signed-off-by: Roman Kagan Message-Id: <20180921082217.29481-10-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini --- include/hw/hyperv/hyperv.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include') diff --git a/include/hw/hyperv/hyperv.h b/include/hw/hyperv/hyperv.h index df92ed7e66..597381cb01 100644 --- a/include/hw/hyperv/hyperv.h +++ b/include/hw/hyperv/hyperv.h @@ -39,6 +39,18 @@ int hyperv_post_msg(HvSintRoute *sint_route, struct hyperv_message *msg); */ int hyperv_set_event_flag(HvSintRoute *sint_route, unsigned eventno); +/* + * Handler for messages arriving from the guest via HV_POST_MESSAGE hypercall. + * Executed in vcpu context. + */ +typedef uint16_t (*HvMsgHandler)(const struct hyperv_post_message_input *msg, + void *data); +/* + * Associate @handler with the message connection @conn_id, such that @handler + * is called with @data when the guest executes HV_POST_MESSAGE hypercall on + * @conn_id. If @handler is NULL clear the association. + */ +int hyperv_set_msg_handler(uint32_t conn_id, HvMsgHandler handler, void *data); /* * Associate @notifier with the event connection @conn_id, such that @notifier * is signaled when the guest executes HV_SIGNAL_EVENT hypercall on @conn_id. @@ -46,6 +58,12 @@ int hyperv_set_event_flag(HvSintRoute *sint_route, unsigned eventno); */ int hyperv_set_event_flag_handler(uint32_t conn_id, EventNotifier *notifier); +/* + * Process HV_POST_MESSAGE hypercall: parse the data in the guest memory as + * specified in @param, and call the HvMsgHandler associated with the + * connection on the message contained therein. + */ +uint16_t hyperv_hcall_post_message(uint64_t param, bool fast); /* * Process HV_SIGNAL_EVENT hypercall: signal the EventNotifier associated with * the connection as specified in @param. -- cgit v1.2.3-55-g7522