/* * QEMU KVM Hyper-V support * * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com> * * Authors: * Andrey Smetanin <asmetanin@virtuozzo.com> * * This work is licensed under the terms of the GNU GPL, version 2 or later. * See the COPYING file in the top-level directory. * */ #include "qemu/osdep.h" #include "hyperv.h" #include "standard-headers/asm-x86/hyperv.h" int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit) { CPUX86State *env = &cpu->env; switch (exit->type) { case KVM_EXIT_HYPERV_SYNIC: if (!cpu->hyperv_synic) { return -1; } /* * For now just track changes in SynIC control and msg/evt pages msr's. * When SynIC messaging/events processing will be added in future * here we will do messages queues flushing and pages remapping. */ switch (exit->u.synic.msr) { case HV_X64_MSR_SCONTROL: env->msr_hv_synic_control = exit->u.synic.control; break; case HV_X64_MSR_SIMP: env->msr_hv_synic_msg_page = exit->u.synic.msg_page; break; case HV_X64_MSR_SIEFP: env->msr_hv_synic_evt_page = exit->u.synic.evt_page; break; default: return -1; } return 0; default: return -1; } } static void kvm_hv_sint_ack_handler(EventNotifier *notifier) { HvSintRoute *sint_route = container_of(notifier, HvSintRoute, sint_ack_notifier); event_notifier_test_and_clear(notifier); if (sint_route->sint_ack_clb) { sint_route->sint_ack_clb(sint_route); } } HvSintRoute *kvm_hv_sint_route_create(uint32_t vcpu_id, uint32_t sint, HvSintAckClb sint_ack_clb) { HvSintRoute *sint_route; int r, gsi; sint_route = g_malloc0(sizeof(*sint_route)); r = event_notifier_init(&sint_route->sint_set_notifier, false); if (r) { goto err; } r = event_notifier_init(&sint_route->sint_ack_notifier, false); if (r) { goto err_sint_set_notifier; } event_notifier_set_handler(&sint_route->sint_ack_notifier, kvm_hv_sint_ack_handler); gsi = kvm_irqchip_add_hv_sint_route(kvm_state, vcpu_id, sint); if (gsi < 0) { goto err_gsi; } r = kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, &sint_route->sint_set_notifier, &sint_route->sint_ack_notifier, gsi); if (r) { goto err_irqfd; } sint_route->gsi = gsi; sint_route->sint_ack_clb = sint_ack_clb; sint_route->vcpu_id = vcpu_id; sint_route->sint = sint; return sint_route; err_irqfd: kvm_irqchip_release_virq(kvm_state, gsi); err_gsi: event_notifier_set_handler(&sint_route->sint_ack_notifier, NULL); event_notifier_cleanup(&sint_route->sint_ack_notifier); err_sint_set_notifier: event_notifier_cleanup(&sint_route->sint_set_notifier); err: g_free(sint_route); return NULL; } void kvm_hv_sint_route_destroy(HvSintRoute *sint_route) { kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, &sint_route->sint_set_notifier, sint_route->gsi); kvm_irqchip_release_virq(kvm_state, sint_route->gsi); event_notifier_set_handler(&sint_route->sint_ack_notifier, NULL); event_notifier_cleanup(&sint_route->sint_ack_notifier); event_notifier_cleanup(&sint_route->sint_set_notifier); g_free(sint_route); } int kvm_hv_sint_route_set_sint(HvSintRoute *sint_route) { return event_notifier_set(&sint_route->sint_set_notifier); }