606c34bfd5
Make Hyper-V SynIC a device which is attached as a child to a CPU. For now it only makes SynIC visibile in the qom hierarchy, and maintains its internal fields in sync with the respecitve msrs of the parent cpu (the fields will be used in followup patches). Signed-off-by: Roman Kagan <rkagan@virtuozzo.com> Message-Id: <20180921082217.29481-3-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*
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* QEMU KVM Hyper-V support
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*
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* Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com>
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*
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* Authors:
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* Andrey Smetanin <asmetanin@virtuozzo.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "hyperv.h"
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#include "hw/hyperv/hyperv.h"
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#include "hyperv-proto.h"
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int hyperv_x86_synic_add(X86CPU *cpu)
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{
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hyperv_synic_add(CPU(cpu));
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return 0;
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}
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void hyperv_x86_synic_reset(X86CPU *cpu)
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{
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hyperv_synic_reset(CPU(cpu));
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}
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void hyperv_x86_synic_update(X86CPU *cpu)
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{
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CPUX86State *env = &cpu->env;
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bool enable = env->msr_hv_synic_control & HV_SYNIC_ENABLE;
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hwaddr msg_page_addr = (env->msr_hv_synic_msg_page & HV_SIMP_ENABLE) ?
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(env->msr_hv_synic_msg_page & TARGET_PAGE_MASK) : 0;
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hwaddr event_page_addr = (env->msr_hv_synic_evt_page & HV_SIEFP_ENABLE) ?
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(env->msr_hv_synic_evt_page & TARGET_PAGE_MASK) : 0;
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hyperv_synic_update(CPU(cpu), enable, msg_page_addr, event_page_addr);
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}
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int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit)
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{
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CPUX86State *env = &cpu->env;
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switch (exit->type) {
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case KVM_EXIT_HYPERV_SYNIC:
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if (!cpu->hyperv_synic) {
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return -1;
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}
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/*
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* For now just track changes in SynIC control and msg/evt pages msr's.
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* When SynIC messaging/events processing will be added in future
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* here we will do messages queues flushing and pages remapping.
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*/
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switch (exit->u.synic.msr) {
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case HV_X64_MSR_SCONTROL:
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env->msr_hv_synic_control = exit->u.synic.control;
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break;
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case HV_X64_MSR_SIMP:
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env->msr_hv_synic_msg_page = exit->u.synic.msg_page;
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break;
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case HV_X64_MSR_SIEFP:
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env->msr_hv_synic_evt_page = exit->u.synic.evt_page;
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break;
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default:
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return -1;
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}
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hyperv_x86_synic_update(cpu);
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return 0;
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case KVM_EXIT_HYPERV_HCALL: {
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uint16_t code;
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code = exit->u.hcall.input & 0xffff;
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switch (code) {
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case HV_POST_MESSAGE:
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case HV_SIGNAL_EVENT:
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default:
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exit->u.hcall.result = HV_STATUS_INVALID_HYPERCALL_CODE;
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return 0;
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}
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}
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default:
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return -1;
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}
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}
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