diff options
Diffstat (limited to 'qemu/target-i386/hyperv.c')
| -rw-r--r-- | qemu/target-i386/hyperv.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/qemu/target-i386/hyperv.c b/qemu/target-i386/hyperv.c new file mode 100644 index 000000000..39a230f11 --- /dev/null +++ b/qemu/target-i386/hyperv.c @@ -0,0 +1,140 @@ +/* + * 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; + case KVM_EXIT_HYPERV_HCALL: { + uint16_t code; + + code = exit->u.hcall.input & 0xffff; + switch (code) { + case HVCALL_POST_MESSAGE: + case HVCALL_SIGNAL_EVENT: + default: + exit->u.hcall.result = HV_STATUS_INVALID_HYPERCALL_CODE; + 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, false, + 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, false, 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, false, 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); +} |