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Paolo Bonzini98c85732010-04-19 18:59:30 +00001/*
2 * QEMU KVM stub
3 *
4 * Copyright Red Hat, Inc. 2010
5 *
6 * Author: Paolo Bonzini <pbonzini@redhat.com>
7 *
8 * This work is licensed under the terms of the GNU GPL, version 2 or later.
9 * See the COPYING file in the top-level directory.
10 *
11 */
12
Peter Maydelld38ea872016-01-29 17:50:05 +000013#include "qemu/osdep.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010014#include "sysemu/kvm.h"
Igor Mammedovc4cfef52013-04-23 10:29:35 +020015#include "hw/pci/msi.h"
Igor Mammedovc4cfef52013-04-23 10:29:35 +020016
Jan Kiszka92b4e482012-05-17 10:32:33 -030017KVMState *kvm_state;
Jan Kiszkabbf3b802012-05-17 10:32:37 -030018bool kvm_kernel_irqchip;
Peter Maydell7ae26bd2012-07-26 15:35:11 +010019bool kvm_async_interrupts_allowed;
Eric Auger879904e2015-07-06 12:15:14 -060020bool kvm_resamplefds_allowed;
Peter Maydell614e41b2012-07-26 15:35:15 +010021bool kvm_msi_via_irqfd_allowed;
Peter Maydellf3e1bed2012-07-26 15:35:16 +010022bool kvm_gsi_routing_allowed;
Alexey Kardashevskiy76fe21d2013-09-03 18:08:25 +100023bool kvm_gsi_direct_mapping;
Igor Mammedov13eed942013-04-23 10:29:36 +020024bool kvm_allowed;
Jordan Justendf9c8b72013-05-29 01:27:25 -070025bool kvm_readonly_mem_allowed;
Pavel Fedin767a5542016-10-04 13:28:09 +010026bool kvm_msi_use_devid;
Jan Kiszka92b4e482012-05-17 10:32:33 -030027
Paolo Bonzini98c85732010-04-19 18:59:30 +000028void kvm_flush_coalesced_mmio_buffer(void)
29{
30}
31
Andreas Färberdd1750d2013-05-01 13:45:44 +020032void kvm_cpu_synchronize_state(CPUState *cpu)
Paolo Bonzini98c85732010-04-19 18:59:30 +000033{
34}
35
Greg Kurz62dd4ed2017-09-21 18:00:53 +020036bool kvm_has_sync_mmu(void)
Paolo Bonzini98c85732010-04-19 18:59:30 +000037{
Greg Kurz62dd4ed2017-09-21 18:00:53 +020038 return false;
Paolo Bonzini98c85732010-04-19 18:59:30 +000039}
40
Andreas Färber290adf32013-01-17 09:30:27 +010041int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
Jan Kiszkaa1b87fe2011-02-01 22:15:51 +010042{
43 return 1;
44}
45
Marcelo Tosattic0532a72010-10-11 15:31:21 -030046int kvm_on_sigbus(int code, void *addr)
47{
48 return 1;
49}
Jan Kiszka92b4e482012-05-17 10:32:33 -030050
Longpeng(Mike)def4c552022-02-22 22:11:16 +080051int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev)
Jan Kiszka92b4e482012-05-17 10:32:33 -030052{
53 return -ENOSYS;
54}
Jan Kiszka1e2aa8b2012-05-17 10:32:34 -030055
Alexander Graf7b774592013-04-16 15:58:13 +020056void kvm_init_irq_routing(KVMState *s)
57{
58}
59
Jan Kiszka1e2aa8b2012-05-17 10:32:34 -030060void kvm_irqchip_release_virq(KVMState *s, int virq)
61{
62}
Jan Kiszka39853bb2012-05-17 10:32:36 -030063
Pavel Fedindc9f06c2015-10-15 16:44:52 +030064int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
65 PCIDevice *dev)
Michael S. Tsirkin078bbb52012-12-21 00:47:46 +020066{
67 return -ENOSYS;
68}
69
Peter Xu3f1fea02016-07-14 13:56:33 +080070void kvm_irqchip_commit_routes(KVMState *s)
71{
72}
73
David Gibson36077152019-10-17 12:12:35 +110074void kvm_irqchip_add_change_notifier(Notifier *n)
75{
76}
77
78void kvm_irqchip_remove_change_notifier(Notifier *n)
79{
80}
81
82void kvm_irqchip_change_notify(void)
83{
84}
85
Eric Auger1c9b71a2015-07-06 12:15:13 -060086int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
87 EventNotifier *rn, int virq)
Jan Kiszka39853bb2012-05-17 10:32:36 -030088{
89 return -ENOSYS;
90}
91
Eric Auger1c9b71a2015-07-06 12:15:13 -060092int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
93 int virq)
Paolo Bonzini15b2bd12012-07-05 17:16:30 +020094{
95 return -ENOSYS;
96}
Igor Mammedovb8865592014-10-31 16:38:32 +000097
David Hildenbrand16ab2ed2023-09-26 20:57:30 +020098unsigned int kvm_get_max_memslots(void)
99{
100 return 0;
101}
102
David Hildenbrand5b231862023-09-26 20:57:24 +0200103unsigned int kvm_get_free_memslots(void)
Igor Mammedovb8865592014-10-31 16:38:32 +0000104{
David Hildenbrand5b231862023-09-26 20:57:24 +0200105 return 0;
Igor Mammedovb8865592014-10-31 16:38:32 +0000106}
Paolo Bonzini18268b62017-02-09 09:41:14 +0100107
108void kvm_init_cpu_signals(CPUState *cpu)
109{
110 abort();
111}
Alexander Graf5d721b72017-07-11 11:21:26 +0100112
113bool kvm_arm_supports_user_irq(void)
114{
115 return false;
116}
Hyman Huang(黄勇)7786ae42021-06-29 16:01:18 +0000117
118bool kvm_dirty_ring_enabled(void)
119{
120 return false;
121}
Hyman Huang(黄勇)4a06a7c2022-06-26 01:38:34 +0800122
123uint32_t kvm_dirty_ring_size(void)
124{
125 return 0;
126}
William Roche06152b82024-01-30 19:06:40 +0000127
128bool kvm_hwpoisoned_mem(void)
129{
130 return false;
131}
Xiaoyao Li15f7a802024-03-20 03:39:02 -0500132
133int kvm_create_guest_memfd(uint64_t size, uint64_t flags, Error **errp)
134{
135 return -ENOSYS;
136}