cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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hyperv.h (2975B)

      1/*
      2 * Hyper-V guest/hypervisor interaction
      3 *
      4 * Copyright (c) 2015-2018 Virtuozzo International GmbH.
      5 *
      6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
      7 * See the COPYING file in the top-level directory.
      8 */
      9
     10#ifndef HW_HYPERV_HYPERV_H
     11#define HW_HYPERV_HYPERV_H
     12
     13#include "cpu-qom.h"
     14#include "hw/hyperv/hyperv-proto.h"
     15
     16typedef struct HvSintRoute HvSintRoute;
     17
     18/*
     19 * Callback executed in a bottom-half when the status of posting the message
     20 * becomes known, before unblocking the connection for further messages
     21 */
     22typedef void (*HvSintMsgCb)(void *data, int status);
     23
     24HvSintRoute *hyperv_sint_route_new(uint32_t vp_index, uint32_t sint,
     25                                   HvSintMsgCb cb, void *cb_data);
     26void hyperv_sint_route_ref(HvSintRoute *sint_route);
     27void hyperv_sint_route_unref(HvSintRoute *sint_route);
     28
     29int hyperv_sint_route_set_sint(HvSintRoute *sint_route);
     30
     31/*
     32 * Submit a message to be posted in vcpu context.  If the submission succeeds,
     33 * the status of posting the message is reported via the callback associated
     34 * with the @sint_route; until then no more messages are accepted.
     35 */
     36int hyperv_post_msg(HvSintRoute *sint_route, struct hyperv_message *msg);
     37/*
     38 * Set event flag @eventno, and signal the SINT if the flag has changed.
     39 */
     40int hyperv_set_event_flag(HvSintRoute *sint_route, unsigned eventno);
     41
     42/*
     43 * Handler for messages arriving from the guest via HV_POST_MESSAGE hypercall.
     44 * Executed in vcpu context.
     45 */
     46typedef uint16_t (*HvMsgHandler)(const struct hyperv_post_message_input *msg,
     47                                 void *data);
     48/*
     49 * Associate @handler with the message connection @conn_id, such that @handler
     50 * is called with @data when the guest executes HV_POST_MESSAGE hypercall on
     51 * @conn_id.  If @handler is NULL clear the association.
     52 */
     53int hyperv_set_msg_handler(uint32_t conn_id, HvMsgHandler handler, void *data);
     54/*
     55 * Associate @notifier with the event connection @conn_id, such that @notifier
     56 * is signaled when the guest executes HV_SIGNAL_EVENT hypercall on @conn_id.
     57 * If @notifier is NULL clear the association.
     58 */
     59int hyperv_set_event_flag_handler(uint32_t conn_id, EventNotifier *notifier);
     60
     61/*
     62 * Process HV_POST_MESSAGE hypercall: parse the data in the guest memory as
     63 * specified in @param, and call the HvMsgHandler associated with the
     64 * connection on the message contained therein.
     65 */
     66uint16_t hyperv_hcall_post_message(uint64_t param, bool fast);
     67/*
     68 * Process HV_SIGNAL_EVENT hypercall: signal the EventNotifier associated with
     69 * the connection as specified in @param.
     70 */
     71uint16_t hyperv_hcall_signal_event(uint64_t param, bool fast);
     72
     73static inline uint32_t hyperv_vp_index(CPUState *cs)
     74{
     75    return cs->cpu_index;
     76}
     77
     78void hyperv_synic_add(CPUState *cs);
     79void hyperv_synic_reset(CPUState *cs);
     80void hyperv_synic_update(CPUState *cs, bool enable,
     81                         hwaddr msg_page_addr, hwaddr event_page_addr);
     82bool hyperv_is_synic_enabled(void);
     83
     84#endif