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1 | 05330448 | aliguori | /*
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2 | 05330448 | aliguori | * QEMU KVM support
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3 | 05330448 | aliguori | *
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4 | 05330448 | aliguori | * Copyright IBM, Corp. 2008
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5 | 5832d1f2 | aliguori | * Red Hat, Inc. 2008
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6 | 05330448 | aliguori | *
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7 | 05330448 | aliguori | * Authors:
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8 | 05330448 | aliguori | * Anthony Liguori <aliguori@us.ibm.com>
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9 | 5832d1f2 | aliguori | * Glauber Costa <gcosta@redhat.com>
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10 | 05330448 | aliguori | *
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11 | 05330448 | aliguori | * This work is licensed under the terms of the GNU GPL, version 2 or later.
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12 | 05330448 | aliguori | * See the COPYING file in the top-level directory.
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13 | 05330448 | aliguori | *
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14 | 05330448 | aliguori | */
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15 | 05330448 | aliguori | |
16 | 05330448 | aliguori | #include <sys/types.h> |
17 | 05330448 | aliguori | #include <sys/ioctl.h> |
18 | 05330448 | aliguori | #include <sys/mman.h> |
19 | 984b5181 | aliguori | #include <stdarg.h> |
20 | 05330448 | aliguori | |
21 | 05330448 | aliguori | #include <linux/kvm.h> |
22 | 05330448 | aliguori | |
23 | 05330448 | aliguori | #include "qemu-common.h" |
24 | 85199474 | Marcelo Tosatti | #include "qemu-barrier.h" |
25 | ebd063d1 | Paolo Bonzini | #include "qemu-option.h" |
26 | ebd063d1 | Paolo Bonzini | #include "qemu-config.h" |
27 | 05330448 | aliguori | #include "sysemu.h" |
28 | d33a1810 | Jan Kiszka | #include "hw/hw.h" |
29 | 04fa27f5 | Jan Kiszka | #include "hw/msi.h" |
30 | e22a25c9 | aliguori | #include "gdbstub.h" |
31 | 05330448 | aliguori | #include "kvm.h" |
32 | 8369e01c | Marcelo Tosatti | #include "bswap.h" |
33 | a01672d3 | Avi Kivity | #include "memory.h" |
34 | 80a1ea37 | Avi Kivity | #include "exec-memory.h" |
35 | 753d5e14 | Paolo Bonzini | #include "event_notifier.h" |
36 | 05330448 | aliguori | |
37 | d2f2b8a7 | Stefan Hajnoczi | /* This check must be after config-host.h is included */
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38 | d2f2b8a7 | Stefan Hajnoczi | #ifdef CONFIG_EVENTFD
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39 | d2f2b8a7 | Stefan Hajnoczi | #include <sys/eventfd.h> |
40 | d2f2b8a7 | Stefan Hajnoczi | #endif
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41 | d2f2b8a7 | Stefan Hajnoczi | |
42 | 62fe8331 | Christian Borntraeger | #ifdef CONFIG_VALGRIND_H
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43 | 62fe8331 | Christian Borntraeger | #include <valgrind/memcheck.h> |
44 | 62fe8331 | Christian Borntraeger | #endif
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45 | 62fe8331 | Christian Borntraeger | |
46 | 93148aa5 | Stefan Weil | /* KVM uses PAGE_SIZE in its definition of COALESCED_MMIO_MAX */
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47 | f65ed4c1 | aliguori | #define PAGE_SIZE TARGET_PAGE_SIZE
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48 | f65ed4c1 | aliguori | |
49 | 05330448 | aliguori | //#define DEBUG_KVM
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50 | 05330448 | aliguori | |
51 | 05330448 | aliguori | #ifdef DEBUG_KVM
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52 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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53 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
54 | 05330448 | aliguori | #else
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55 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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56 | 05330448 | aliguori | do { } while (0) |
57 | 05330448 | aliguori | #endif
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58 | 05330448 | aliguori | |
59 | 04fa27f5 | Jan Kiszka | #define KVM_MSI_HASHTAB_SIZE 256 |
60 | 04fa27f5 | Jan Kiszka | |
61 | 34fc643f | aliguori | typedef struct KVMSlot |
62 | 34fc643f | aliguori | { |
63 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr; |
64 | c227f099 | Anthony Liguori | ram_addr_t memory_size; |
65 | 9f213ed9 | Avi Kivity | void *ram;
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66 | 34fc643f | aliguori | int slot;
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67 | 34fc643f | aliguori | int flags;
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68 | 34fc643f | aliguori | } KVMSlot; |
69 | 05330448 | aliguori | |
70 | 5832d1f2 | aliguori | typedef struct kvm_dirty_log KVMDirtyLog; |
71 | 5832d1f2 | aliguori | |
72 | 05330448 | aliguori | struct KVMState
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73 | 05330448 | aliguori | { |
74 | 05330448 | aliguori | KVMSlot slots[32];
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75 | 05330448 | aliguori | int fd;
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76 | 05330448 | aliguori | int vmfd;
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77 | f65ed4c1 | aliguori | int coalesced_mmio;
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78 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
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79 | 1cae88b9 | Avi Kivity | bool coalesced_flush_in_progress;
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80 | e69917e2 | Jan Kiszka | int broken_set_mem_region;
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81 | 4495d6a7 | Jan Kiszka | int migration_log;
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82 | a0fb002c | Jan Kiszka | int vcpu_events;
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83 | b0b1d690 | Jan Kiszka | int robust_singlestep;
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84 | ff44f1a3 | Jan Kiszka | int debugregs;
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85 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
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86 | e22a25c9 | aliguori | struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
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87 | e22a25c9 | aliguori | #endif
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88 | 8a7c7393 | Jan Kiszka | int pit_state2;
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89 | f1665b21 | Sheng Yang | int xsave, xcrs;
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90 | d2f2b8a7 | Stefan Hajnoczi | int many_ioeventfds;
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91 | 3ab73842 | Jan Kiszka | int intx_set_mask;
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92 | 92e4b519 | David Gibson | /* The man page (and posix) say ioctl numbers are signed int, but
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93 | 92e4b519 | David Gibson | * they're not. Linux, glibc and *BSD all treat ioctl numbers as
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94 | 92e4b519 | David Gibson | * unsigned, and treating them as signed here can break things */
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95 | e333cd69 | Jan Kiszka | unsigned irq_set_ioctl;
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96 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
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97 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing *irq_routes;
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98 | 84b058d7 | Jan Kiszka | int nr_allocated_irq_routes;
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99 | 84b058d7 | Jan Kiszka | uint32_t *used_gsi_bitmap; |
100 | 4e2e4e63 | Jan Kiszka | unsigned int gsi_count; |
101 | 04fa27f5 | Jan Kiszka | QTAILQ_HEAD(msi_hashtab, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE]; |
102 | 4a3adebb | Jan Kiszka | bool direct_msi;
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103 | 84b058d7 | Jan Kiszka | #endif
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104 | 05330448 | aliguori | }; |
105 | 05330448 | aliguori | |
106 | 6a7af8cb | Jan Kiszka | KVMState *kvm_state; |
107 | 3d4b2649 | Jan Kiszka | bool kvm_kernel_irqchip;
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108 | 7ae26bd4 | Peter Maydell | bool kvm_async_interrupts_allowed;
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109 | cc7e0ddf | Peter Maydell | bool kvm_irqfds_allowed;
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110 | 614e41bc | Peter Maydell | bool kvm_msi_via_irqfd_allowed;
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111 | f3e1bed8 | Peter Maydell | bool kvm_gsi_routing_allowed;
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112 | 05330448 | aliguori | |
113 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
114 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(USER_MEMORY), |
115 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), |
116 | 94a8d39a | Jan Kiszka | KVM_CAP_LAST_INFO |
117 | 94a8d39a | Jan Kiszka | }; |
118 | 94a8d39a | Jan Kiszka | |
119 | 05330448 | aliguori | static KVMSlot *kvm_alloc_slot(KVMState *s)
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120 | 05330448 | aliguori | { |
121 | 05330448 | aliguori | int i;
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122 | 05330448 | aliguori | |
123 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
124 | a426e122 | Jan Kiszka | if (s->slots[i].memory_size == 0) { |
125 | 05330448 | aliguori | return &s->slots[i];
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126 | a426e122 | Jan Kiszka | } |
127 | 05330448 | aliguori | } |
128 | 05330448 | aliguori | |
129 | d3f8d37f | aliguori | fprintf(stderr, "%s: no free slot available\n", __func__);
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130 | d3f8d37f | aliguori | abort(); |
131 | d3f8d37f | aliguori | } |
132 | d3f8d37f | aliguori | |
133 | d3f8d37f | aliguori | static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
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134 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
135 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
136 | d3f8d37f | aliguori | { |
137 | d3f8d37f | aliguori | int i;
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138 | d3f8d37f | aliguori | |
139 | d3f8d37f | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
140 | d3f8d37f | aliguori | KVMSlot *mem = &s->slots[i]; |
141 | d3f8d37f | aliguori | |
142 | d3f8d37f | aliguori | if (start_addr == mem->start_addr &&
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143 | d3f8d37f | aliguori | end_addr == mem->start_addr + mem->memory_size) { |
144 | d3f8d37f | aliguori | return mem;
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145 | d3f8d37f | aliguori | } |
146 | d3f8d37f | aliguori | } |
147 | d3f8d37f | aliguori | |
148 | 05330448 | aliguori | return NULL; |
149 | 05330448 | aliguori | } |
150 | 05330448 | aliguori | |
151 | 6152e2ae | aliguori | /*
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152 | 6152e2ae | aliguori | * Find overlapping slot with lowest start address
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153 | 6152e2ae | aliguori | */
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154 | 6152e2ae | aliguori | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
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155 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
156 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
157 | 05330448 | aliguori | { |
158 | 6152e2ae | aliguori | KVMSlot *found = NULL;
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159 | 05330448 | aliguori | int i;
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160 | 05330448 | aliguori | |
161 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
162 | 05330448 | aliguori | KVMSlot *mem = &s->slots[i]; |
163 | 05330448 | aliguori | |
164 | 6152e2ae | aliguori | if (mem->memory_size == 0 || |
165 | 6152e2ae | aliguori | (found && found->start_addr < mem->start_addr)) { |
166 | 6152e2ae | aliguori | continue;
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167 | 6152e2ae | aliguori | } |
168 | 6152e2ae | aliguori | |
169 | 6152e2ae | aliguori | if (end_addr > mem->start_addr &&
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170 | 6152e2ae | aliguori | start_addr < mem->start_addr + mem->memory_size) { |
171 | 6152e2ae | aliguori | found = mem; |
172 | 6152e2ae | aliguori | } |
173 | 05330448 | aliguori | } |
174 | 05330448 | aliguori | |
175 | 6152e2ae | aliguori | return found;
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176 | 05330448 | aliguori | } |
177 | 05330448 | aliguori | |
178 | 9f213ed9 | Avi Kivity | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
179 | 9f213ed9 | Avi Kivity | target_phys_addr_t *phys_addr) |
180 | 983dfc3b | Huang Ying | { |
181 | 983dfc3b | Huang Ying | int i;
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182 | 983dfc3b | Huang Ying | |
183 | 983dfc3b | Huang Ying | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
184 | 983dfc3b | Huang Ying | KVMSlot *mem = &s->slots[i]; |
185 | 983dfc3b | Huang Ying | |
186 | 9f213ed9 | Avi Kivity | if (ram >= mem->ram && ram < mem->ram + mem->memory_size) {
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187 | 9f213ed9 | Avi Kivity | *phys_addr = mem->start_addr + (ram - mem->ram); |
188 | 983dfc3b | Huang Ying | return 1; |
189 | 983dfc3b | Huang Ying | } |
190 | 983dfc3b | Huang Ying | } |
191 | 983dfc3b | Huang Ying | |
192 | 983dfc3b | Huang Ying | return 0; |
193 | 983dfc3b | Huang Ying | } |
194 | 983dfc3b | Huang Ying | |
195 | 5832d1f2 | aliguori | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
196 | 5832d1f2 | aliguori | { |
197 | 5832d1f2 | aliguori | struct kvm_userspace_memory_region mem;
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198 | 5832d1f2 | aliguori | |
199 | 5832d1f2 | aliguori | mem.slot = slot->slot; |
200 | 5832d1f2 | aliguori | mem.guest_phys_addr = slot->start_addr; |
201 | 5832d1f2 | aliguori | mem.memory_size = slot->memory_size; |
202 | 9f213ed9 | Avi Kivity | mem.userspace_addr = (unsigned long)slot->ram; |
203 | 5832d1f2 | aliguori | mem.flags = slot->flags; |
204 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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205 | 4495d6a7 | Jan Kiszka | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
206 | 4495d6a7 | Jan Kiszka | } |
207 | 5832d1f2 | aliguori | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
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208 | 5832d1f2 | aliguori | } |
209 | 5832d1f2 | aliguori | |
210 | 8d2ba1fb | Jan Kiszka | static void kvm_reset_vcpu(void *opaque) |
211 | 8d2ba1fb | Jan Kiszka | { |
212 | 9349b4f9 | Andreas Färber | CPUArchState *env = opaque; |
213 | 8d2ba1fb | Jan Kiszka | |
214 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
215 | 8d2ba1fb | Jan Kiszka | } |
216 | 5832d1f2 | aliguori | |
217 | 9349b4f9 | Andreas Färber | int kvm_init_vcpu(CPUArchState *env)
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218 | 05330448 | aliguori | { |
219 | 05330448 | aliguori | KVMState *s = kvm_state; |
220 | 05330448 | aliguori | long mmap_size;
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221 | 05330448 | aliguori | int ret;
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222 | 05330448 | aliguori | |
223 | 8c0d577e | Blue Swirl | DPRINTF("kvm_init_vcpu\n");
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224 | 05330448 | aliguori | |
225 | 984b5181 | aliguori | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
226 | 05330448 | aliguori | if (ret < 0) { |
227 | 8c0d577e | Blue Swirl | DPRINTF("kvm_create_vcpu failed\n");
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228 | 05330448 | aliguori | goto err;
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229 | 05330448 | aliguori | } |
230 | 05330448 | aliguori | |
231 | 05330448 | aliguori | env->kvm_fd = ret; |
232 | 05330448 | aliguori | env->kvm_state = s; |
233 | d841b6c4 | Jan Kiszka | env->kvm_vcpu_dirty = 1;
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234 | 05330448 | aliguori | |
235 | 05330448 | aliguori | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
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236 | 05330448 | aliguori | if (mmap_size < 0) { |
237 | 748a680b | Jan Kiszka | ret = mmap_size; |
238 | 8c0d577e | Blue Swirl | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
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239 | 05330448 | aliguori | goto err;
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240 | 05330448 | aliguori | } |
241 | 05330448 | aliguori | |
242 | 05330448 | aliguori | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
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243 | 05330448 | aliguori | env->kvm_fd, 0);
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244 | 05330448 | aliguori | if (env->kvm_run == MAP_FAILED) {
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245 | 05330448 | aliguori | ret = -errno; |
246 | 8c0d577e | Blue Swirl | DPRINTF("mmap'ing vcpu state failed\n");
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247 | 05330448 | aliguori | goto err;
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248 | 05330448 | aliguori | } |
249 | 05330448 | aliguori | |
250 | a426e122 | Jan Kiszka | if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
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251 | a426e122 | Jan Kiszka | s->coalesced_mmio_ring = |
252 | a426e122 | Jan Kiszka | (void *)env->kvm_run + s->coalesced_mmio * PAGE_SIZE;
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253 | a426e122 | Jan Kiszka | } |
254 | 62a2744c | Sheng Yang | |
255 | 05330448 | aliguori | ret = kvm_arch_init_vcpu(env); |
256 | 8d2ba1fb | Jan Kiszka | if (ret == 0) { |
257 | a08d4367 | Jan Kiszka | qemu_register_reset(kvm_reset_vcpu, env); |
258 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
259 | 8d2ba1fb | Jan Kiszka | } |
260 | 05330448 | aliguori | err:
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261 | 05330448 | aliguori | return ret;
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262 | 05330448 | aliguori | } |
263 | 05330448 | aliguori | |
264 | 5832d1f2 | aliguori | /*
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265 | 5832d1f2 | aliguori | * dirty pages logging control
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266 | 5832d1f2 | aliguori | */
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267 | 25254bbc | Michael S. Tsirkin | |
268 | 25254bbc | Michael S. Tsirkin | static int kvm_mem_flags(KVMState *s, bool log_dirty) |
269 | 25254bbc | Michael S. Tsirkin | { |
270 | 25254bbc | Michael S. Tsirkin | return log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0; |
271 | 25254bbc | Michael S. Tsirkin | } |
272 | 25254bbc | Michael S. Tsirkin | |
273 | 25254bbc | Michael S. Tsirkin | static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty) |
274 | 5832d1f2 | aliguori | { |
275 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
276 | 25254bbc | Michael S. Tsirkin | int flags, mask = KVM_MEM_LOG_DIRTY_PAGES;
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277 | 4495d6a7 | Jan Kiszka | int old_flags;
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278 | 4495d6a7 | Jan Kiszka | |
279 | 4495d6a7 | Jan Kiszka | old_flags = mem->flags; |
280 | 5832d1f2 | aliguori | |
281 | 25254bbc | Michael S. Tsirkin | flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty); |
282 | 5832d1f2 | aliguori | mem->flags = flags; |
283 | 5832d1f2 | aliguori | |
284 | 4495d6a7 | Jan Kiszka | /* If nothing changed effectively, no need to issue ioctl */
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285 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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286 | 4495d6a7 | Jan Kiszka | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
287 | 4495d6a7 | Jan Kiszka | } |
288 | 25254bbc | Michael S. Tsirkin | |
289 | 4495d6a7 | Jan Kiszka | if (flags == old_flags) {
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290 | 25254bbc | Michael S. Tsirkin | return 0; |
291 | 4495d6a7 | Jan Kiszka | } |
292 | 4495d6a7 | Jan Kiszka | |
293 | 5832d1f2 | aliguori | return kvm_set_user_memory_region(s, mem);
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294 | 5832d1f2 | aliguori | } |
295 | 5832d1f2 | aliguori | |
296 | 25254bbc | Michael S. Tsirkin | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
297 | 25254bbc | Michael S. Tsirkin | ram_addr_t size, bool log_dirty)
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298 | 25254bbc | Michael S. Tsirkin | { |
299 | 25254bbc | Michael S. Tsirkin | KVMState *s = kvm_state; |
300 | 25254bbc | Michael S. Tsirkin | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
301 | 25254bbc | Michael S. Tsirkin | |
302 | 25254bbc | Michael S. Tsirkin | if (mem == NULL) { |
303 | 25254bbc | Michael S. Tsirkin | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
304 | 25254bbc | Michael S. Tsirkin | TARGET_FMT_plx "\n", __func__, phys_addr,
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305 | 25254bbc | Michael S. Tsirkin | (target_phys_addr_t)(phys_addr + size - 1));
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306 | 25254bbc | Michael S. Tsirkin | return -EINVAL;
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307 | 25254bbc | Michael S. Tsirkin | } |
308 | 25254bbc | Michael S. Tsirkin | return kvm_slot_dirty_pages_log_change(mem, log_dirty);
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309 | 25254bbc | Michael S. Tsirkin | } |
310 | 25254bbc | Michael S. Tsirkin | |
311 | a01672d3 | Avi Kivity | static void kvm_log_start(MemoryListener *listener, |
312 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
313 | 5832d1f2 | aliguori | { |
314 | a01672d3 | Avi Kivity | int r;
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315 | a01672d3 | Avi Kivity | |
316 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
317 | a01672d3 | Avi Kivity | section->size, true);
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318 | a01672d3 | Avi Kivity | if (r < 0) { |
319 | a01672d3 | Avi Kivity | abort(); |
320 | a01672d3 | Avi Kivity | } |
321 | 5832d1f2 | aliguori | } |
322 | 5832d1f2 | aliguori | |
323 | a01672d3 | Avi Kivity | static void kvm_log_stop(MemoryListener *listener, |
324 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
325 | 5832d1f2 | aliguori | { |
326 | a01672d3 | Avi Kivity | int r;
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327 | a01672d3 | Avi Kivity | |
328 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
329 | a01672d3 | Avi Kivity | section->size, false);
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330 | a01672d3 | Avi Kivity | if (r < 0) { |
331 | a01672d3 | Avi Kivity | abort(); |
332 | a01672d3 | Avi Kivity | } |
333 | 5832d1f2 | aliguori | } |
334 | 5832d1f2 | aliguori | |
335 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_set_migration_log(int enable) |
336 | 4495d6a7 | Jan Kiszka | { |
337 | 4495d6a7 | Jan Kiszka | KVMState *s = kvm_state; |
338 | 4495d6a7 | Jan Kiszka | KVMSlot *mem; |
339 | 4495d6a7 | Jan Kiszka | int i, err;
|
340 | 4495d6a7 | Jan Kiszka | |
341 | 4495d6a7 | Jan Kiszka | s->migration_log = enable; |
342 | 4495d6a7 | Jan Kiszka | |
343 | 4495d6a7 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
344 | 4495d6a7 | Jan Kiszka | mem = &s->slots[i]; |
345 | 4495d6a7 | Jan Kiszka | |
346 | 70fedd76 | Alex Williamson | if (!mem->memory_size) {
|
347 | 70fedd76 | Alex Williamson | continue;
|
348 | 70fedd76 | Alex Williamson | } |
349 | 4495d6a7 | Jan Kiszka | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
|
350 | 4495d6a7 | Jan Kiszka | continue;
|
351 | 4495d6a7 | Jan Kiszka | } |
352 | 4495d6a7 | Jan Kiszka | err = kvm_set_user_memory_region(s, mem); |
353 | 4495d6a7 | Jan Kiszka | if (err) {
|
354 | 4495d6a7 | Jan Kiszka | return err;
|
355 | 4495d6a7 | Jan Kiszka | } |
356 | 4495d6a7 | Jan Kiszka | } |
357 | 4495d6a7 | Jan Kiszka | return 0; |
358 | 4495d6a7 | Jan Kiszka | } |
359 | 4495d6a7 | Jan Kiszka | |
360 | 8369e01c | Marcelo Tosatti | /* get kvm's dirty pages bitmap and update qemu's */
|
361 | ffcde12f | Avi Kivity | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
362 | ffcde12f | Avi Kivity | unsigned long *bitmap) |
363 | 96c1606b | Alexander Graf | { |
364 | 8369e01c | Marcelo Tosatti | unsigned int i, j; |
365 | aa90fec7 | Benjamin Herrenschmidt | unsigned long page_number, c; |
366 | aa90fec7 | Benjamin Herrenschmidt | target_phys_addr_t addr, addr1; |
367 | ffcde12f | Avi Kivity | unsigned int len = ((section->size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) / HOST_LONG_BITS; |
368 | 3145fcb6 | David Gibson | unsigned long hpratio = getpagesize() / TARGET_PAGE_SIZE; |
369 | 8369e01c | Marcelo Tosatti | |
370 | 8369e01c | Marcelo Tosatti | /*
|
371 | 8369e01c | Marcelo Tosatti | * bitmap-traveling is faster than memory-traveling (for addr...)
|
372 | 8369e01c | Marcelo Tosatti | * especially when most of the memory is not dirty.
|
373 | 8369e01c | Marcelo Tosatti | */
|
374 | 8369e01c | Marcelo Tosatti | for (i = 0; i < len; i++) { |
375 | 8369e01c | Marcelo Tosatti | if (bitmap[i] != 0) { |
376 | 8369e01c | Marcelo Tosatti | c = leul_to_cpu(bitmap[i]); |
377 | 8369e01c | Marcelo Tosatti | do {
|
378 | 8369e01c | Marcelo Tosatti | j = ffsl(c) - 1;
|
379 | 8369e01c | Marcelo Tosatti | c &= ~(1ul << j);
|
380 | 3145fcb6 | David Gibson | page_number = (i * HOST_LONG_BITS + j) * hpratio; |
381 | 8369e01c | Marcelo Tosatti | addr1 = page_number * TARGET_PAGE_SIZE; |
382 | ffcde12f | Avi Kivity | addr = section->offset_within_region + addr1; |
383 | 3145fcb6 | David Gibson | memory_region_set_dirty(section->mr, addr, |
384 | 3145fcb6 | David Gibson | TARGET_PAGE_SIZE * hpratio); |
385 | 8369e01c | Marcelo Tosatti | } while (c != 0); |
386 | 8369e01c | Marcelo Tosatti | } |
387 | 8369e01c | Marcelo Tosatti | } |
388 | 8369e01c | Marcelo Tosatti | return 0; |
389 | 96c1606b | Alexander Graf | } |
390 | 96c1606b | Alexander Graf | |
391 | 8369e01c | Marcelo Tosatti | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
392 | 8369e01c | Marcelo Tosatti | |
393 | 5832d1f2 | aliguori | /**
|
394 | 5832d1f2 | aliguori | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
|
395 | fd4aa979 | Blue Swirl | * This function updates qemu's dirty bitmap using
|
396 | fd4aa979 | Blue Swirl | * memory_region_set_dirty(). This means all bits are set
|
397 | fd4aa979 | Blue Swirl | * to dirty.
|
398 | 5832d1f2 | aliguori | *
|
399 | d3f8d37f | aliguori | * @start_add: start of logged region.
|
400 | 5832d1f2 | aliguori | * @end_addr: end of logged region.
|
401 | 5832d1f2 | aliguori | */
|
402 | ffcde12f | Avi Kivity | static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section) |
403 | 5832d1f2 | aliguori | { |
404 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
405 | 151f7749 | Jan Kiszka | unsigned long size, allocated_size = 0; |
406 | 151f7749 | Jan Kiszka | KVMDirtyLog d; |
407 | 151f7749 | Jan Kiszka | KVMSlot *mem; |
408 | 151f7749 | Jan Kiszka | int ret = 0; |
409 | ffcde12f | Avi Kivity | target_phys_addr_t start_addr = section->offset_within_address_space; |
410 | ffcde12f | Avi Kivity | target_phys_addr_t end_addr = start_addr + section->size; |
411 | 5832d1f2 | aliguori | |
412 | 151f7749 | Jan Kiszka | d.dirty_bitmap = NULL;
|
413 | 151f7749 | Jan Kiszka | while (start_addr < end_addr) {
|
414 | 151f7749 | Jan Kiszka | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
415 | 151f7749 | Jan Kiszka | if (mem == NULL) { |
416 | 151f7749 | Jan Kiszka | break;
|
417 | 151f7749 | Jan Kiszka | } |
418 | 5832d1f2 | aliguori | |
419 | 51b0c606 | Michael Tokarev | /* XXX bad kernel interface alert
|
420 | 51b0c606 | Michael Tokarev | * For dirty bitmap, kernel allocates array of size aligned to
|
421 | 51b0c606 | Michael Tokarev | * bits-per-long. But for case when the kernel is 64bits and
|
422 | 51b0c606 | Michael Tokarev | * the userspace is 32bits, userspace can't align to the same
|
423 | 51b0c606 | Michael Tokarev | * bits-per-long, since sizeof(long) is different between kernel
|
424 | 51b0c606 | Michael Tokarev | * and user space. This way, userspace will provide buffer which
|
425 | 51b0c606 | Michael Tokarev | * may be 4 bytes less than the kernel will use, resulting in
|
426 | 51b0c606 | Michael Tokarev | * userspace memory corruption (which is not detectable by valgrind
|
427 | 51b0c606 | Michael Tokarev | * too, in most cases).
|
428 | 51b0c606 | Michael Tokarev | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in
|
429 | 51b0c606 | Michael Tokarev | * a hope that sizeof(long) wont become >8 any time soon.
|
430 | 51b0c606 | Michael Tokarev | */
|
431 | 51b0c606 | Michael Tokarev | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), |
432 | 51b0c606 | Michael Tokarev | /*HOST_LONG_BITS*/ 64) / 8; |
433 | 151f7749 | Jan Kiszka | if (!d.dirty_bitmap) {
|
434 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_malloc(size); |
435 | 151f7749 | Jan Kiszka | } else if (size > allocated_size) { |
436 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
437 | 151f7749 | Jan Kiszka | } |
438 | 151f7749 | Jan Kiszka | allocated_size = size; |
439 | 151f7749 | Jan Kiszka | memset(d.dirty_bitmap, 0, allocated_size);
|
440 | 5832d1f2 | aliguori | |
441 | 151f7749 | Jan Kiszka | d.slot = mem->slot; |
442 | 5832d1f2 | aliguori | |
443 | 6e489f3f | Anthony Liguori | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
444 | 8c0d577e | Blue Swirl | DPRINTF("ioctl failed %d\n", errno);
|
445 | 151f7749 | Jan Kiszka | ret = -1;
|
446 | 151f7749 | Jan Kiszka | break;
|
447 | 151f7749 | Jan Kiszka | } |
448 | 5832d1f2 | aliguori | |
449 | ffcde12f | Avi Kivity | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
450 | 8369e01c | Marcelo Tosatti | start_addr = mem->start_addr + mem->memory_size; |
451 | 5832d1f2 | aliguori | } |
452 | 7267c094 | Anthony Liguori | g_free(d.dirty_bitmap); |
453 | 151f7749 | Jan Kiszka | |
454 | 151f7749 | Jan Kiszka | return ret;
|
455 | 5832d1f2 | aliguori | } |
456 | 5832d1f2 | aliguori | |
457 | c227f099 | Anthony Liguori | int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
458 | f65ed4c1 | aliguori | { |
459 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
460 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
461 | f65ed4c1 | aliguori | |
462 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
463 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
464 | f65ed4c1 | aliguori | |
465 | f65ed4c1 | aliguori | zone.addr = start; |
466 | f65ed4c1 | aliguori | zone.size = size; |
467 | 7e680753 | Michael S. Tsirkin | zone.pad = 0;
|
468 | f65ed4c1 | aliguori | |
469 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
470 | f65ed4c1 | aliguori | } |
471 | f65ed4c1 | aliguori | |
472 | f65ed4c1 | aliguori | return ret;
|
473 | f65ed4c1 | aliguori | } |
474 | f65ed4c1 | aliguori | |
475 | c227f099 | Anthony Liguori | int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
476 | f65ed4c1 | aliguori | { |
477 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
478 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
479 | f65ed4c1 | aliguori | |
480 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
481 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
482 | f65ed4c1 | aliguori | |
483 | f65ed4c1 | aliguori | zone.addr = start; |
484 | f65ed4c1 | aliguori | zone.size = size; |
485 | 7e680753 | Michael S. Tsirkin | zone.pad = 0;
|
486 | f65ed4c1 | aliguori | |
487 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
488 | f65ed4c1 | aliguori | } |
489 | f65ed4c1 | aliguori | |
490 | f65ed4c1 | aliguori | return ret;
|
491 | f65ed4c1 | aliguori | } |
492 | f65ed4c1 | aliguori | |
493 | ad7b8b33 | Anthony Liguori | int kvm_check_extension(KVMState *s, unsigned int extension) |
494 | ad7b8b33 | Anthony Liguori | { |
495 | ad7b8b33 | Anthony Liguori | int ret;
|
496 | ad7b8b33 | Anthony Liguori | |
497 | ad7b8b33 | Anthony Liguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
498 | ad7b8b33 | Anthony Liguori | if (ret < 0) { |
499 | ad7b8b33 | Anthony Liguori | ret = 0;
|
500 | ad7b8b33 | Anthony Liguori | } |
501 | ad7b8b33 | Anthony Liguori | |
502 | ad7b8b33 | Anthony Liguori | return ret;
|
503 | ad7b8b33 | Anthony Liguori | } |
504 | ad7b8b33 | Anthony Liguori | |
505 | d2f2b8a7 | Stefan Hajnoczi | static int kvm_check_many_ioeventfds(void) |
506 | d2f2b8a7 | Stefan Hajnoczi | { |
507 | d0dcac83 | Stefan Hajnoczi | /* Userspace can use ioeventfd for io notification. This requires a host
|
508 | d0dcac83 | Stefan Hajnoczi | * that supports eventfd(2) and an I/O thread; since eventfd does not
|
509 | d0dcac83 | Stefan Hajnoczi | * support SIGIO it cannot interrupt the vcpu.
|
510 | d0dcac83 | Stefan Hajnoczi | *
|
511 | d0dcac83 | Stefan Hajnoczi | * Older kernels have a 6 device limit on the KVM io bus. Find out so we
|
512 | d2f2b8a7 | Stefan Hajnoczi | * can avoid creating too many ioeventfds.
|
513 | d2f2b8a7 | Stefan Hajnoczi | */
|
514 | 12d4536f | Anthony Liguori | #if defined(CONFIG_EVENTFD)
|
515 | d2f2b8a7 | Stefan Hajnoczi | int ioeventfds[7]; |
516 | d2f2b8a7 | Stefan Hajnoczi | int i, ret = 0; |
517 | d2f2b8a7 | Stefan Hajnoczi | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
518 | d2f2b8a7 | Stefan Hajnoczi | ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
|
519 | d2f2b8a7 | Stefan Hajnoczi | if (ioeventfds[i] < 0) { |
520 | d2f2b8a7 | Stefan Hajnoczi | break;
|
521 | d2f2b8a7 | Stefan Hajnoczi | } |
522 | d2f2b8a7 | Stefan Hajnoczi | ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true); |
523 | d2f2b8a7 | Stefan Hajnoczi | if (ret < 0) { |
524 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
525 | d2f2b8a7 | Stefan Hajnoczi | break;
|
526 | d2f2b8a7 | Stefan Hajnoczi | } |
527 | d2f2b8a7 | Stefan Hajnoczi | } |
528 | d2f2b8a7 | Stefan Hajnoczi | |
529 | d2f2b8a7 | Stefan Hajnoczi | /* Decide whether many devices are supported or not */
|
530 | d2f2b8a7 | Stefan Hajnoczi | ret = i == ARRAY_SIZE(ioeventfds); |
531 | d2f2b8a7 | Stefan Hajnoczi | |
532 | d2f2b8a7 | Stefan Hajnoczi | while (i-- > 0) { |
533 | d2f2b8a7 | Stefan Hajnoczi | kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false); |
534 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
535 | d2f2b8a7 | Stefan Hajnoczi | } |
536 | d2f2b8a7 | Stefan Hajnoczi | return ret;
|
537 | d2f2b8a7 | Stefan Hajnoczi | #else
|
538 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
539 | d2f2b8a7 | Stefan Hajnoczi | #endif
|
540 | d2f2b8a7 | Stefan Hajnoczi | } |
541 | d2f2b8a7 | Stefan Hajnoczi | |
542 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo * |
543 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
|
544 | 94a8d39a | Jan Kiszka | { |
545 | 94a8d39a | Jan Kiszka | while (list->name) {
|
546 | 94a8d39a | Jan Kiszka | if (!kvm_check_extension(s, list->value)) {
|
547 | 94a8d39a | Jan Kiszka | return list;
|
548 | 94a8d39a | Jan Kiszka | } |
549 | 94a8d39a | Jan Kiszka | list++; |
550 | 94a8d39a | Jan Kiszka | } |
551 | 94a8d39a | Jan Kiszka | return NULL; |
552 | 94a8d39a | Jan Kiszka | } |
553 | 94a8d39a | Jan Kiszka | |
554 | a01672d3 | Avi Kivity | static void kvm_set_phys_mem(MemoryRegionSection *section, bool add) |
555 | 46dbef6a | Michael S. Tsirkin | { |
556 | 46dbef6a | Michael S. Tsirkin | KVMState *s = kvm_state; |
557 | 46dbef6a | Michael S. Tsirkin | KVMSlot *mem, old; |
558 | 46dbef6a | Michael S. Tsirkin | int err;
|
559 | a01672d3 | Avi Kivity | MemoryRegion *mr = section->mr; |
560 | a01672d3 | Avi Kivity | bool log_dirty = memory_region_is_logging(mr);
|
561 | a01672d3 | Avi Kivity | target_phys_addr_t start_addr = section->offset_within_address_space; |
562 | a01672d3 | Avi Kivity | ram_addr_t size = section->size; |
563 | 9f213ed9 | Avi Kivity | void *ram = NULL; |
564 | 8f6f962b | Avi Kivity | unsigned delta;
|
565 | 46dbef6a | Michael S. Tsirkin | |
566 | 14542fea | Gleb Natapov | /* kvm works in page size chunks, but the function may be called
|
567 | 14542fea | Gleb Natapov | with sub-page size and unaligned start address. */
|
568 | 8f6f962b | Avi Kivity | delta = TARGET_PAGE_ALIGN(size) - size; |
569 | 8f6f962b | Avi Kivity | if (delta > size) {
|
570 | 8f6f962b | Avi Kivity | return;
|
571 | 8f6f962b | Avi Kivity | } |
572 | 8f6f962b | Avi Kivity | start_addr += delta; |
573 | 8f6f962b | Avi Kivity | size -= delta; |
574 | 8f6f962b | Avi Kivity | size &= TARGET_PAGE_MASK; |
575 | 8f6f962b | Avi Kivity | if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
|
576 | 8f6f962b | Avi Kivity | return;
|
577 | 8f6f962b | Avi Kivity | } |
578 | 46dbef6a | Michael S. Tsirkin | |
579 | a01672d3 | Avi Kivity | if (!memory_region_is_ram(mr)) {
|
580 | a01672d3 | Avi Kivity | return;
|
581 | 9f213ed9 | Avi Kivity | } |
582 | 9f213ed9 | Avi Kivity | |
583 | 8f6f962b | Avi Kivity | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta; |
584 | a01672d3 | Avi Kivity | |
585 | 46dbef6a | Michael S. Tsirkin | while (1) { |
586 | 46dbef6a | Michael S. Tsirkin | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
587 | 46dbef6a | Michael S. Tsirkin | if (!mem) {
|
588 | 46dbef6a | Michael S. Tsirkin | break;
|
589 | 46dbef6a | Michael S. Tsirkin | } |
590 | 46dbef6a | Michael S. Tsirkin | |
591 | a01672d3 | Avi Kivity | if (add && start_addr >= mem->start_addr &&
|
592 | 46dbef6a | Michael S. Tsirkin | (start_addr + size <= mem->start_addr + mem->memory_size) && |
593 | 9f213ed9 | Avi Kivity | (ram - start_addr == mem->ram - mem->start_addr)) { |
594 | 46dbef6a | Michael S. Tsirkin | /* The new slot fits into the existing one and comes with
|
595 | 25254bbc | Michael S. Tsirkin | * identical parameters - update flags and done. */
|
596 | 25254bbc | Michael S. Tsirkin | kvm_slot_dirty_pages_log_change(mem, log_dirty); |
597 | 46dbef6a | Michael S. Tsirkin | return;
|
598 | 46dbef6a | Michael S. Tsirkin | } |
599 | 46dbef6a | Michael S. Tsirkin | |
600 | 46dbef6a | Michael S. Tsirkin | old = *mem; |
601 | 46dbef6a | Michael S. Tsirkin | |
602 | 3fbffb62 | Avi Kivity | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
|
603 | 3fbffb62 | Avi Kivity | kvm_physical_sync_dirty_bitmap(section); |
604 | 3fbffb62 | Avi Kivity | } |
605 | 3fbffb62 | Avi Kivity | |
606 | 46dbef6a | Michael S. Tsirkin | /* unregister the overlapping slot */
|
607 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = 0;
|
608 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
609 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
610 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
|
611 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
612 | 46dbef6a | Michael S. Tsirkin | abort(); |
613 | 46dbef6a | Michael S. Tsirkin | } |
614 | 46dbef6a | Michael S. Tsirkin | |
615 | 46dbef6a | Michael S. Tsirkin | /* Workaround for older KVM versions: we can't join slots, even not by
|
616 | 46dbef6a | Michael S. Tsirkin | * unregistering the previous ones and then registering the larger
|
617 | 46dbef6a | Michael S. Tsirkin | * slot. We have to maintain the existing fragmentation. Sigh.
|
618 | 46dbef6a | Michael S. Tsirkin | *
|
619 | 46dbef6a | Michael S. Tsirkin | * This workaround assumes that the new slot starts at the same
|
620 | 46dbef6a | Michael S. Tsirkin | * address as the first existing one. If not or if some overlapping
|
621 | 46dbef6a | Michael S. Tsirkin | * slot comes around later, we will fail (not seen in practice so far)
|
622 | 46dbef6a | Michael S. Tsirkin | * - and actually require a recent KVM version. */
|
623 | 46dbef6a | Michael S. Tsirkin | if (s->broken_set_mem_region &&
|
624 | a01672d3 | Avi Kivity | old.start_addr == start_addr && old.memory_size < size && add) { |
625 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
626 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size; |
627 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
628 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
629 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
630 | 46dbef6a | Michael S. Tsirkin | |
631 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
632 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
633 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error updating slot: %s\n", __func__,
|
634 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
635 | 46dbef6a | Michael S. Tsirkin | abort(); |
636 | 46dbef6a | Michael S. Tsirkin | } |
637 | 46dbef6a | Michael S. Tsirkin | |
638 | 46dbef6a | Michael S. Tsirkin | start_addr += old.memory_size; |
639 | 9f213ed9 | Avi Kivity | ram += old.memory_size; |
640 | 46dbef6a | Michael S. Tsirkin | size -= old.memory_size; |
641 | 46dbef6a | Michael S. Tsirkin | continue;
|
642 | 46dbef6a | Michael S. Tsirkin | } |
643 | 46dbef6a | Michael S. Tsirkin | |
644 | 46dbef6a | Michael S. Tsirkin | /* register prefix slot */
|
645 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr < start_addr) {
|
646 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
647 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = start_addr - old.start_addr; |
648 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
649 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
650 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
651 | 46dbef6a | Michael S. Tsirkin | |
652 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
653 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
654 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering prefix slot: %s\n",
|
655 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
656 | d4d6868f | Alexander Graf | #ifdef TARGET_PPC
|
657 | d4d6868f | Alexander Graf | fprintf(stderr, "%s: This is probably because your kernel's " \
|
658 | d4d6868f | Alexander Graf | "PAGE_SIZE is too big. Please try to use 4k " \
|
659 | d4d6868f | Alexander Graf | "PAGE_SIZE!\n", __func__);
|
660 | d4d6868f | Alexander Graf | #endif
|
661 | 46dbef6a | Michael S. Tsirkin | abort(); |
662 | 46dbef6a | Michael S. Tsirkin | } |
663 | 46dbef6a | Michael S. Tsirkin | } |
664 | 46dbef6a | Michael S. Tsirkin | |
665 | 46dbef6a | Michael S. Tsirkin | /* register suffix slot */
|
666 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr + old.memory_size > start_addr + size) {
|
667 | 46dbef6a | Michael S. Tsirkin | ram_addr_t size_delta; |
668 | 46dbef6a | Michael S. Tsirkin | |
669 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
670 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr + size; |
671 | 46dbef6a | Michael S. Tsirkin | size_delta = mem->start_addr - old.start_addr; |
672 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size - size_delta; |
673 | 9f213ed9 | Avi Kivity | mem->ram = old.ram + size_delta; |
674 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
675 | 46dbef6a | Michael S. Tsirkin | |
676 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
677 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
678 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering suffix slot: %s\n",
|
679 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
680 | 46dbef6a | Michael S. Tsirkin | abort(); |
681 | 46dbef6a | Michael S. Tsirkin | } |
682 | 46dbef6a | Michael S. Tsirkin | } |
683 | 46dbef6a | Michael S. Tsirkin | } |
684 | 46dbef6a | Michael S. Tsirkin | |
685 | 46dbef6a | Michael S. Tsirkin | /* in case the KVM bug workaround already "consumed" the new slot */
|
686 | a426e122 | Jan Kiszka | if (!size) {
|
687 | 46dbef6a | Michael S. Tsirkin | return;
|
688 | a426e122 | Jan Kiszka | } |
689 | a01672d3 | Avi Kivity | if (!add) {
|
690 | 46dbef6a | Michael S. Tsirkin | return;
|
691 | a426e122 | Jan Kiszka | } |
692 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
693 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = size; |
694 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr; |
695 | 9f213ed9 | Avi Kivity | mem->ram = ram; |
696 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
697 | 46dbef6a | Michael S. Tsirkin | |
698 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
699 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
700 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering slot: %s\n", __func__,
|
701 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
702 | 46dbef6a | Michael S. Tsirkin | abort(); |
703 | 46dbef6a | Michael S. Tsirkin | } |
704 | 46dbef6a | Michael S. Tsirkin | } |
705 | 46dbef6a | Michael S. Tsirkin | |
706 | 50c1e149 | Avi Kivity | static void kvm_begin(MemoryListener *listener) |
707 | 50c1e149 | Avi Kivity | { |
708 | 50c1e149 | Avi Kivity | } |
709 | 50c1e149 | Avi Kivity | |
710 | 50c1e149 | Avi Kivity | static void kvm_commit(MemoryListener *listener) |
711 | 50c1e149 | Avi Kivity | { |
712 | 50c1e149 | Avi Kivity | } |
713 | 50c1e149 | Avi Kivity | |
714 | a01672d3 | Avi Kivity | static void kvm_region_add(MemoryListener *listener, |
715 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
716 | a01672d3 | Avi Kivity | { |
717 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, true);
|
718 | a01672d3 | Avi Kivity | } |
719 | a01672d3 | Avi Kivity | |
720 | a01672d3 | Avi Kivity | static void kvm_region_del(MemoryListener *listener, |
721 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
722 | a01672d3 | Avi Kivity | { |
723 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, false);
|
724 | a01672d3 | Avi Kivity | } |
725 | a01672d3 | Avi Kivity | |
726 | 50c1e149 | Avi Kivity | static void kvm_region_nop(MemoryListener *listener, |
727 | 50c1e149 | Avi Kivity | MemoryRegionSection *section) |
728 | 50c1e149 | Avi Kivity | { |
729 | 50c1e149 | Avi Kivity | } |
730 | 50c1e149 | Avi Kivity | |
731 | a01672d3 | Avi Kivity | static void kvm_log_sync(MemoryListener *listener, |
732 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
733 | 7b8f3b78 | Michael S. Tsirkin | { |
734 | a01672d3 | Avi Kivity | int r;
|
735 | a01672d3 | Avi Kivity | |
736 | ffcde12f | Avi Kivity | r = kvm_physical_sync_dirty_bitmap(section); |
737 | a01672d3 | Avi Kivity | if (r < 0) { |
738 | a01672d3 | Avi Kivity | abort(); |
739 | a01672d3 | Avi Kivity | } |
740 | 7b8f3b78 | Michael S. Tsirkin | } |
741 | 7b8f3b78 | Michael S. Tsirkin | |
742 | a01672d3 | Avi Kivity | static void kvm_log_global_start(struct MemoryListener *listener) |
743 | 7b8f3b78 | Michael S. Tsirkin | { |
744 | a01672d3 | Avi Kivity | int r;
|
745 | a01672d3 | Avi Kivity | |
746 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(1);
|
747 | a01672d3 | Avi Kivity | assert(r >= 0);
|
748 | 7b8f3b78 | Michael S. Tsirkin | } |
749 | 7b8f3b78 | Michael S. Tsirkin | |
750 | a01672d3 | Avi Kivity | static void kvm_log_global_stop(struct MemoryListener *listener) |
751 | 7b8f3b78 | Michael S. Tsirkin | { |
752 | a01672d3 | Avi Kivity | int r;
|
753 | a01672d3 | Avi Kivity | |
754 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(0);
|
755 | a01672d3 | Avi Kivity | assert(r >= 0);
|
756 | 7b8f3b78 | Michael S. Tsirkin | } |
757 | 7b8f3b78 | Michael S. Tsirkin | |
758 | 80a1ea37 | Avi Kivity | static void kvm_mem_ioeventfd_add(MemoryRegionSection *section, |
759 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
760 | 80a1ea37 | Avi Kivity | { |
761 | 80a1ea37 | Avi Kivity | int r;
|
762 | 80a1ea37 | Avi Kivity | |
763 | 4b8f1c88 | Michael S. Tsirkin | assert(match_data && section->size <= 8);
|
764 | 80a1ea37 | Avi Kivity | |
765 | 4b8f1c88 | Michael S. Tsirkin | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
766 | 4b8f1c88 | Michael S. Tsirkin | data, true, section->size);
|
767 | 80a1ea37 | Avi Kivity | if (r < 0) { |
768 | 80a1ea37 | Avi Kivity | abort(); |
769 | 80a1ea37 | Avi Kivity | } |
770 | 80a1ea37 | Avi Kivity | } |
771 | 80a1ea37 | Avi Kivity | |
772 | 80a1ea37 | Avi Kivity | static void kvm_mem_ioeventfd_del(MemoryRegionSection *section, |
773 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
774 | 80a1ea37 | Avi Kivity | { |
775 | 80a1ea37 | Avi Kivity | int r;
|
776 | 80a1ea37 | Avi Kivity | |
777 | 4b8f1c88 | Michael S. Tsirkin | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
778 | 4b8f1c88 | Michael S. Tsirkin | data, false, section->size);
|
779 | 80a1ea37 | Avi Kivity | if (r < 0) { |
780 | 80a1ea37 | Avi Kivity | abort(); |
781 | 80a1ea37 | Avi Kivity | } |
782 | 80a1ea37 | Avi Kivity | } |
783 | 80a1ea37 | Avi Kivity | |
784 | 80a1ea37 | Avi Kivity | static void kvm_io_ioeventfd_add(MemoryRegionSection *section, |
785 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
786 | 80a1ea37 | Avi Kivity | { |
787 | 80a1ea37 | Avi Kivity | int r;
|
788 | 80a1ea37 | Avi Kivity | |
789 | 80a1ea37 | Avi Kivity | assert(match_data && section->size == 2);
|
790 | 80a1ea37 | Avi Kivity | |
791 | 80a1ea37 | Avi Kivity | r = kvm_set_ioeventfd_pio_word(fd, section->offset_within_address_space, |
792 | 80a1ea37 | Avi Kivity | data, true);
|
793 | 80a1ea37 | Avi Kivity | if (r < 0) { |
794 | 80a1ea37 | Avi Kivity | abort(); |
795 | 80a1ea37 | Avi Kivity | } |
796 | 80a1ea37 | Avi Kivity | } |
797 | 80a1ea37 | Avi Kivity | |
798 | 80a1ea37 | Avi Kivity | static void kvm_io_ioeventfd_del(MemoryRegionSection *section, |
799 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
800 | 80a1ea37 | Avi Kivity | |
801 | 80a1ea37 | Avi Kivity | { |
802 | 80a1ea37 | Avi Kivity | int r;
|
803 | 80a1ea37 | Avi Kivity | |
804 | 80a1ea37 | Avi Kivity | r = kvm_set_ioeventfd_pio_word(fd, section->offset_within_address_space, |
805 | 80a1ea37 | Avi Kivity | data, false);
|
806 | 80a1ea37 | Avi Kivity | if (r < 0) { |
807 | 80a1ea37 | Avi Kivity | abort(); |
808 | 80a1ea37 | Avi Kivity | } |
809 | 80a1ea37 | Avi Kivity | } |
810 | 80a1ea37 | Avi Kivity | |
811 | 80a1ea37 | Avi Kivity | static void kvm_eventfd_add(MemoryListener *listener, |
812 | 80a1ea37 | Avi Kivity | MemoryRegionSection *section, |
813 | 753d5e14 | Paolo Bonzini | bool match_data, uint64_t data,
|
814 | 753d5e14 | Paolo Bonzini | EventNotifier *e) |
815 | 80a1ea37 | Avi Kivity | { |
816 | 80a1ea37 | Avi Kivity | if (section->address_space == get_system_memory()) {
|
817 | 753d5e14 | Paolo Bonzini | kvm_mem_ioeventfd_add(section, match_data, data, |
818 | 753d5e14 | Paolo Bonzini | event_notifier_get_fd(e)); |
819 | 80a1ea37 | Avi Kivity | } else {
|
820 | 753d5e14 | Paolo Bonzini | kvm_io_ioeventfd_add(section, match_data, data, |
821 | 753d5e14 | Paolo Bonzini | event_notifier_get_fd(e)); |
822 | 80a1ea37 | Avi Kivity | } |
823 | 80a1ea37 | Avi Kivity | } |
824 | 80a1ea37 | Avi Kivity | |
825 | 80a1ea37 | Avi Kivity | static void kvm_eventfd_del(MemoryListener *listener, |
826 | 80a1ea37 | Avi Kivity | MemoryRegionSection *section, |
827 | 753d5e14 | Paolo Bonzini | bool match_data, uint64_t data,
|
828 | 753d5e14 | Paolo Bonzini | EventNotifier *e) |
829 | 80a1ea37 | Avi Kivity | { |
830 | 80a1ea37 | Avi Kivity | if (section->address_space == get_system_memory()) {
|
831 | 753d5e14 | Paolo Bonzini | kvm_mem_ioeventfd_del(section, match_data, data, |
832 | 753d5e14 | Paolo Bonzini | event_notifier_get_fd(e)); |
833 | 80a1ea37 | Avi Kivity | } else {
|
834 | 753d5e14 | Paolo Bonzini | kvm_io_ioeventfd_del(section, match_data, data, |
835 | 753d5e14 | Paolo Bonzini | event_notifier_get_fd(e)); |
836 | 80a1ea37 | Avi Kivity | } |
837 | 80a1ea37 | Avi Kivity | } |
838 | 80a1ea37 | Avi Kivity | |
839 | a01672d3 | Avi Kivity | static MemoryListener kvm_memory_listener = {
|
840 | 50c1e149 | Avi Kivity | .begin = kvm_begin, |
841 | 50c1e149 | Avi Kivity | .commit = kvm_commit, |
842 | a01672d3 | Avi Kivity | .region_add = kvm_region_add, |
843 | a01672d3 | Avi Kivity | .region_del = kvm_region_del, |
844 | 50c1e149 | Avi Kivity | .region_nop = kvm_region_nop, |
845 | e5896b12 | Anthony PERARD | .log_start = kvm_log_start, |
846 | e5896b12 | Anthony PERARD | .log_stop = kvm_log_stop, |
847 | a01672d3 | Avi Kivity | .log_sync = kvm_log_sync, |
848 | a01672d3 | Avi Kivity | .log_global_start = kvm_log_global_start, |
849 | a01672d3 | Avi Kivity | .log_global_stop = kvm_log_global_stop, |
850 | 80a1ea37 | Avi Kivity | .eventfd_add = kvm_eventfd_add, |
851 | 80a1ea37 | Avi Kivity | .eventfd_del = kvm_eventfd_del, |
852 | 72e22d2f | Avi Kivity | .priority = 10,
|
853 | 7b8f3b78 | Michael S. Tsirkin | }; |
854 | 7b8f3b78 | Michael S. Tsirkin | |
855 | 9349b4f9 | Andreas Färber | static void kvm_handle_interrupt(CPUArchState *env, int mask) |
856 | aa7f74d1 | Jan Kiszka | { |
857 | aa7f74d1 | Jan Kiszka | env->interrupt_request |= mask; |
858 | aa7f74d1 | Jan Kiszka | |
859 | aa7f74d1 | Jan Kiszka | if (!qemu_cpu_is_self(env)) {
|
860 | aa7f74d1 | Jan Kiszka | qemu_cpu_kick(env); |
861 | aa7f74d1 | Jan Kiszka | } |
862 | aa7f74d1 | Jan Kiszka | } |
863 | aa7f74d1 | Jan Kiszka | |
864 | 3889c3fa | Peter Maydell | int kvm_set_irq(KVMState *s, int irq, int level) |
865 | 84b058d7 | Jan Kiszka | { |
866 | 84b058d7 | Jan Kiszka | struct kvm_irq_level event;
|
867 | 84b058d7 | Jan Kiszka | int ret;
|
868 | 84b058d7 | Jan Kiszka | |
869 | 7ae26bd4 | Peter Maydell | assert(kvm_async_interrupts_enabled()); |
870 | 84b058d7 | Jan Kiszka | |
871 | 84b058d7 | Jan Kiszka | event.level = level; |
872 | 84b058d7 | Jan Kiszka | event.irq = irq; |
873 | e333cd69 | Jan Kiszka | ret = kvm_vm_ioctl(s, s->irq_set_ioctl, &event); |
874 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
875 | 3889c3fa | Peter Maydell | perror("kvm_set_irq");
|
876 | 84b058d7 | Jan Kiszka | abort(); |
877 | 84b058d7 | Jan Kiszka | } |
878 | 84b058d7 | Jan Kiszka | |
879 | e333cd69 | Jan Kiszka | return (s->irq_set_ioctl == KVM_IRQ_LINE) ? 1 : event.status; |
880 | 84b058d7 | Jan Kiszka | } |
881 | 84b058d7 | Jan Kiszka | |
882 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
883 | d3d3bef0 | Jan Kiszka | typedef struct KVMMSIRoute { |
884 | d3d3bef0 | Jan Kiszka | struct kvm_irq_routing_entry kroute;
|
885 | d3d3bef0 | Jan Kiszka | QTAILQ_ENTRY(KVMMSIRoute) entry; |
886 | d3d3bef0 | Jan Kiszka | } KVMMSIRoute; |
887 | d3d3bef0 | Jan Kiszka | |
888 | 84b058d7 | Jan Kiszka | static void set_gsi(KVMState *s, unsigned int gsi) |
889 | 84b058d7 | Jan Kiszka | { |
890 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] |= 1U << (gsi % 32); |
891 | 84b058d7 | Jan Kiszka | } |
892 | 84b058d7 | Jan Kiszka | |
893 | 04fa27f5 | Jan Kiszka | static void clear_gsi(KVMState *s, unsigned int gsi) |
894 | 04fa27f5 | Jan Kiszka | { |
895 | 04fa27f5 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] &= ~(1U << (gsi % 32)); |
896 | 04fa27f5 | Jan Kiszka | } |
897 | 04fa27f5 | Jan Kiszka | |
898 | 84b058d7 | Jan Kiszka | static void kvm_init_irq_routing(KVMState *s) |
899 | 84b058d7 | Jan Kiszka | { |
900 | 04fa27f5 | Jan Kiszka | int gsi_count, i;
|
901 | 84b058d7 | Jan Kiszka | |
902 | 84b058d7 | Jan Kiszka | gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING); |
903 | 84b058d7 | Jan Kiszka | if (gsi_count > 0) { |
904 | 84b058d7 | Jan Kiszka | unsigned int gsi_bits, i; |
905 | 84b058d7 | Jan Kiszka | |
906 | 84b058d7 | Jan Kiszka | /* Round up so we can search ints using ffs */
|
907 | bc8c6788 | Jason Baron | gsi_bits = ALIGN(gsi_count, 32);
|
908 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap = g_malloc0(gsi_bits / 8);
|
909 | 4e2e4e63 | Jan Kiszka | s->gsi_count = gsi_count; |
910 | 84b058d7 | Jan Kiszka | |
911 | 84b058d7 | Jan Kiszka | /* Mark any over-allocated bits as already in use */
|
912 | 84b058d7 | Jan Kiszka | for (i = gsi_count; i < gsi_bits; i++) {
|
913 | 84b058d7 | Jan Kiszka | set_gsi(s, i); |
914 | 84b058d7 | Jan Kiszka | } |
915 | 84b058d7 | Jan Kiszka | } |
916 | 84b058d7 | Jan Kiszka | |
917 | 84b058d7 | Jan Kiszka | s->irq_routes = g_malloc0(sizeof(*s->irq_routes));
|
918 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = 0;
|
919 | 84b058d7 | Jan Kiszka | |
920 | 4a3adebb | Jan Kiszka | if (!s->direct_msi) {
|
921 | 4a3adebb | Jan Kiszka | for (i = 0; i < KVM_MSI_HASHTAB_SIZE; i++) { |
922 | 4a3adebb | Jan Kiszka | QTAILQ_INIT(&s->msi_hashtab[i]); |
923 | 4a3adebb | Jan Kiszka | } |
924 | 04fa27f5 | Jan Kiszka | } |
925 | 04fa27f5 | Jan Kiszka | |
926 | 84b058d7 | Jan Kiszka | kvm_arch_init_irq_routing(s); |
927 | 84b058d7 | Jan Kiszka | } |
928 | 84b058d7 | Jan Kiszka | |
929 | e7b20308 | Jan Kiszka | static void kvm_irqchip_commit_routes(KVMState *s) |
930 | e7b20308 | Jan Kiszka | { |
931 | e7b20308 | Jan Kiszka | int ret;
|
932 | e7b20308 | Jan Kiszka | |
933 | e7b20308 | Jan Kiszka | s->irq_routes->flags = 0;
|
934 | e7b20308 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes); |
935 | e7b20308 | Jan Kiszka | assert(ret == 0);
|
936 | e7b20308 | Jan Kiszka | } |
937 | e7b20308 | Jan Kiszka | |
938 | 84b058d7 | Jan Kiszka | static void kvm_add_routing_entry(KVMState *s, |
939 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *entry)
|
940 | 84b058d7 | Jan Kiszka | { |
941 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *new;
|
942 | 84b058d7 | Jan Kiszka | int n, size;
|
943 | 84b058d7 | Jan Kiszka | |
944 | 84b058d7 | Jan Kiszka | if (s->irq_routes->nr == s->nr_allocated_irq_routes) {
|
945 | 84b058d7 | Jan Kiszka | n = s->nr_allocated_irq_routes * 2;
|
946 | 84b058d7 | Jan Kiszka | if (n < 64) { |
947 | 84b058d7 | Jan Kiszka | n = 64;
|
948 | 84b058d7 | Jan Kiszka | } |
949 | 84b058d7 | Jan Kiszka | size = sizeof(struct kvm_irq_routing); |
950 | 84b058d7 | Jan Kiszka | size += n * sizeof(*new);
|
951 | 84b058d7 | Jan Kiszka | s->irq_routes = g_realloc(s->irq_routes, size); |
952 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = n; |
953 | 84b058d7 | Jan Kiszka | } |
954 | 84b058d7 | Jan Kiszka | n = s->irq_routes->nr++; |
955 | 84b058d7 | Jan Kiszka | new = &s->irq_routes->entries[n]; |
956 | 84b058d7 | Jan Kiszka | memset(new, 0, sizeof(*new)); |
957 | 84b058d7 | Jan Kiszka | new->gsi = entry->gsi; |
958 | 84b058d7 | Jan Kiszka | new->type = entry->type; |
959 | 84b058d7 | Jan Kiszka | new->flags = entry->flags; |
960 | 84b058d7 | Jan Kiszka | new->u = entry->u; |
961 | 84b058d7 | Jan Kiszka | |
962 | 84b058d7 | Jan Kiszka | set_gsi(s, entry->gsi); |
963 | e7b20308 | Jan Kiszka | |
964 | e7b20308 | Jan Kiszka | kvm_irqchip_commit_routes(s); |
965 | 84b058d7 | Jan Kiszka | } |
966 | 84b058d7 | Jan Kiszka | |
967 | cc57407e | Jan Kiszka | static int kvm_update_routing_entry(KVMState *s, |
968 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry *new_entry)
|
969 | cc57407e | Jan Kiszka | { |
970 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry *entry;
|
971 | cc57407e | Jan Kiszka | int n;
|
972 | cc57407e | Jan Kiszka | |
973 | cc57407e | Jan Kiszka | for (n = 0; n < s->irq_routes->nr; n++) { |
974 | cc57407e | Jan Kiszka | entry = &s->irq_routes->entries[n]; |
975 | cc57407e | Jan Kiszka | if (entry->gsi != new_entry->gsi) {
|
976 | cc57407e | Jan Kiszka | continue;
|
977 | cc57407e | Jan Kiszka | } |
978 | cc57407e | Jan Kiszka | |
979 | cc57407e | Jan Kiszka | entry->type = new_entry->type; |
980 | cc57407e | Jan Kiszka | entry->flags = new_entry->flags; |
981 | cc57407e | Jan Kiszka | entry->u = new_entry->u; |
982 | cc57407e | Jan Kiszka | |
983 | cc57407e | Jan Kiszka | kvm_irqchip_commit_routes(s); |
984 | cc57407e | Jan Kiszka | |
985 | cc57407e | Jan Kiszka | return 0; |
986 | cc57407e | Jan Kiszka | } |
987 | cc57407e | Jan Kiszka | |
988 | cc57407e | Jan Kiszka | return -ESRCH;
|
989 | cc57407e | Jan Kiszka | } |
990 | cc57407e | Jan Kiszka | |
991 | 1df186df | Jan Kiszka | void kvm_irqchip_add_irq_route(KVMState *s, int irq, int irqchip, int pin) |
992 | 84b058d7 | Jan Kiszka | { |
993 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry e;
|
994 | 84b058d7 | Jan Kiszka | |
995 | 4e2e4e63 | Jan Kiszka | assert(pin < s->gsi_count); |
996 | 4e2e4e63 | Jan Kiszka | |
997 | 84b058d7 | Jan Kiszka | e.gsi = irq; |
998 | 84b058d7 | Jan Kiszka | e.type = KVM_IRQ_ROUTING_IRQCHIP; |
999 | 84b058d7 | Jan Kiszka | e.flags = 0;
|
1000 | 84b058d7 | Jan Kiszka | e.u.irqchip.irqchip = irqchip; |
1001 | 84b058d7 | Jan Kiszka | e.u.irqchip.pin = pin; |
1002 | 84b058d7 | Jan Kiszka | kvm_add_routing_entry(s, &e); |
1003 | 84b058d7 | Jan Kiszka | } |
1004 | 84b058d7 | Jan Kiszka | |
1005 | 1e2aa8be | Jan Kiszka | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1006 | 04fa27f5 | Jan Kiszka | { |
1007 | 04fa27f5 | Jan Kiszka | struct kvm_irq_routing_entry *e;
|
1008 | 04fa27f5 | Jan Kiszka | int i;
|
1009 | 04fa27f5 | Jan Kiszka | |
1010 | 04fa27f5 | Jan Kiszka | for (i = 0; i < s->irq_routes->nr; i++) { |
1011 | 04fa27f5 | Jan Kiszka | e = &s->irq_routes->entries[i]; |
1012 | 04fa27f5 | Jan Kiszka | if (e->gsi == virq) {
|
1013 | 04fa27f5 | Jan Kiszka | s->irq_routes->nr--; |
1014 | 04fa27f5 | Jan Kiszka | *e = s->irq_routes->entries[s->irq_routes->nr]; |
1015 | 04fa27f5 | Jan Kiszka | } |
1016 | 04fa27f5 | Jan Kiszka | } |
1017 | 04fa27f5 | Jan Kiszka | clear_gsi(s, virq); |
1018 | e7b20308 | Jan Kiszka | |
1019 | e7b20308 | Jan Kiszka | kvm_irqchip_commit_routes(s); |
1020 | 04fa27f5 | Jan Kiszka | } |
1021 | 04fa27f5 | Jan Kiszka | |
1022 | 04fa27f5 | Jan Kiszka | static unsigned int kvm_hash_msi(uint32_t data) |
1023 | 04fa27f5 | Jan Kiszka | { |
1024 | 04fa27f5 | Jan Kiszka | /* This is optimized for IA32 MSI layout. However, no other arch shall
|
1025 | 04fa27f5 | Jan Kiszka | * repeat the mistake of not providing a direct MSI injection API. */
|
1026 | 04fa27f5 | Jan Kiszka | return data & 0xff; |
1027 | 04fa27f5 | Jan Kiszka | } |
1028 | 04fa27f5 | Jan Kiszka | |
1029 | 04fa27f5 | Jan Kiszka | static void kvm_flush_dynamic_msi_routes(KVMState *s) |
1030 | 04fa27f5 | Jan Kiszka | { |
1031 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route, *next; |
1032 | 04fa27f5 | Jan Kiszka | unsigned int hash; |
1033 | 04fa27f5 | Jan Kiszka | |
1034 | 04fa27f5 | Jan Kiszka | for (hash = 0; hash < KVM_MSI_HASHTAB_SIZE; hash++) { |
1035 | 04fa27f5 | Jan Kiszka | QTAILQ_FOREACH_SAFE(route, &s->msi_hashtab[hash], entry, next) { |
1036 | 04fa27f5 | Jan Kiszka | kvm_irqchip_release_virq(s, route->kroute.gsi); |
1037 | 04fa27f5 | Jan Kiszka | QTAILQ_REMOVE(&s->msi_hashtab[hash], route, entry); |
1038 | 04fa27f5 | Jan Kiszka | g_free(route); |
1039 | 04fa27f5 | Jan Kiszka | } |
1040 | 04fa27f5 | Jan Kiszka | } |
1041 | 04fa27f5 | Jan Kiszka | } |
1042 | 04fa27f5 | Jan Kiszka | |
1043 | 04fa27f5 | Jan Kiszka | static int kvm_irqchip_get_virq(KVMState *s) |
1044 | 04fa27f5 | Jan Kiszka | { |
1045 | 04fa27f5 | Jan Kiszka | uint32_t *word = s->used_gsi_bitmap; |
1046 | 04fa27f5 | Jan Kiszka | int max_words = ALIGN(s->gsi_count, 32) / 32; |
1047 | 04fa27f5 | Jan Kiszka | int i, bit;
|
1048 | 04fa27f5 | Jan Kiszka | bool retry = true; |
1049 | 04fa27f5 | Jan Kiszka | |
1050 | 04fa27f5 | Jan Kiszka | again:
|
1051 | 04fa27f5 | Jan Kiszka | /* Return the lowest unused GSI in the bitmap */
|
1052 | 04fa27f5 | Jan Kiszka | for (i = 0; i < max_words; i++) { |
1053 | 04fa27f5 | Jan Kiszka | bit = ffs(~word[i]); |
1054 | 04fa27f5 | Jan Kiszka | if (!bit) {
|
1055 | 04fa27f5 | Jan Kiszka | continue;
|
1056 | 04fa27f5 | Jan Kiszka | } |
1057 | 04fa27f5 | Jan Kiszka | |
1058 | 04fa27f5 | Jan Kiszka | return bit - 1 + i * 32; |
1059 | 04fa27f5 | Jan Kiszka | } |
1060 | 4a3adebb | Jan Kiszka | if (!s->direct_msi && retry) {
|
1061 | 04fa27f5 | Jan Kiszka | retry = false;
|
1062 | 04fa27f5 | Jan Kiszka | kvm_flush_dynamic_msi_routes(s); |
1063 | 04fa27f5 | Jan Kiszka | goto again;
|
1064 | 04fa27f5 | Jan Kiszka | } |
1065 | 04fa27f5 | Jan Kiszka | return -ENOSPC;
|
1066 | 04fa27f5 | Jan Kiszka | |
1067 | 04fa27f5 | Jan Kiszka | } |
1068 | 04fa27f5 | Jan Kiszka | |
1069 | 04fa27f5 | Jan Kiszka | static KVMMSIRoute *kvm_lookup_msi_route(KVMState *s, MSIMessage msg)
|
1070 | 04fa27f5 | Jan Kiszka | { |
1071 | 04fa27f5 | Jan Kiszka | unsigned int hash = kvm_hash_msi(msg.data); |
1072 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route; |
1073 | 04fa27f5 | Jan Kiszka | |
1074 | 04fa27f5 | Jan Kiszka | QTAILQ_FOREACH(route, &s->msi_hashtab[hash], entry) { |
1075 | 04fa27f5 | Jan Kiszka | if (route->kroute.u.msi.address_lo == (uint32_t)msg.address &&
|
1076 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_hi == (msg.address >> 32) &&
|
1077 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.data == msg.data) { |
1078 | 04fa27f5 | Jan Kiszka | return route;
|
1079 | 04fa27f5 | Jan Kiszka | } |
1080 | 04fa27f5 | Jan Kiszka | } |
1081 | 04fa27f5 | Jan Kiszka | return NULL; |
1082 | 04fa27f5 | Jan Kiszka | } |
1083 | 04fa27f5 | Jan Kiszka | |
1084 | 04fa27f5 | Jan Kiszka | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
|
1085 | 04fa27f5 | Jan Kiszka | { |
1086 | 4a3adebb | Jan Kiszka | struct kvm_msi msi;
|
1087 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route; |
1088 | 04fa27f5 | Jan Kiszka | |
1089 | 4a3adebb | Jan Kiszka | if (s->direct_msi) {
|
1090 | 4a3adebb | Jan Kiszka | msi.address_lo = (uint32_t)msg.address; |
1091 | 4a3adebb | Jan Kiszka | msi.address_hi = msg.address >> 32;
|
1092 | 4a3adebb | Jan Kiszka | msi.data = msg.data; |
1093 | 4a3adebb | Jan Kiszka | msi.flags = 0;
|
1094 | 4a3adebb | Jan Kiszka | memset(msi.pad, 0, sizeof(msi.pad)); |
1095 | 4a3adebb | Jan Kiszka | |
1096 | 4a3adebb | Jan Kiszka | return kvm_vm_ioctl(s, KVM_SIGNAL_MSI, &msi);
|
1097 | 4a3adebb | Jan Kiszka | } |
1098 | 4a3adebb | Jan Kiszka | |
1099 | 04fa27f5 | Jan Kiszka | route = kvm_lookup_msi_route(s, msg); |
1100 | 04fa27f5 | Jan Kiszka | if (!route) {
|
1101 | e7b20308 | Jan Kiszka | int virq;
|
1102 | 04fa27f5 | Jan Kiszka | |
1103 | 04fa27f5 | Jan Kiszka | virq = kvm_irqchip_get_virq(s); |
1104 | 04fa27f5 | Jan Kiszka | if (virq < 0) { |
1105 | 04fa27f5 | Jan Kiszka | return virq;
|
1106 | 04fa27f5 | Jan Kiszka | } |
1107 | 04fa27f5 | Jan Kiszka | |
1108 | 04fa27f5 | Jan Kiszka | route = g_malloc(sizeof(KVMMSIRoute));
|
1109 | 04fa27f5 | Jan Kiszka | route->kroute.gsi = virq; |
1110 | 04fa27f5 | Jan Kiszka | route->kroute.type = KVM_IRQ_ROUTING_MSI; |
1111 | 04fa27f5 | Jan Kiszka | route->kroute.flags = 0;
|
1112 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_lo = (uint32_t)msg.address; |
1113 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_hi = msg.address >> 32;
|
1114 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.data = msg.data; |
1115 | 04fa27f5 | Jan Kiszka | |
1116 | 04fa27f5 | Jan Kiszka | kvm_add_routing_entry(s, &route->kroute); |
1117 | 04fa27f5 | Jan Kiszka | |
1118 | 04fa27f5 | Jan Kiszka | QTAILQ_INSERT_TAIL(&s->msi_hashtab[kvm_hash_msi(msg.data)], route, |
1119 | 04fa27f5 | Jan Kiszka | entry); |
1120 | 04fa27f5 | Jan Kiszka | } |
1121 | 04fa27f5 | Jan Kiszka | |
1122 | 04fa27f5 | Jan Kiszka | assert(route->kroute.type == KVM_IRQ_ROUTING_MSI); |
1123 | 04fa27f5 | Jan Kiszka | |
1124 | 3889c3fa | Peter Maydell | return kvm_set_irq(s, route->kroute.gsi, 1); |
1125 | 04fa27f5 | Jan Kiszka | } |
1126 | 04fa27f5 | Jan Kiszka | |
1127 | 92b4e489 | Jan Kiszka | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
|
1128 | 92b4e489 | Jan Kiszka | { |
1129 | 92b4e489 | Jan Kiszka | struct kvm_irq_routing_entry kroute;
|
1130 | 92b4e489 | Jan Kiszka | int virq;
|
1131 | 92b4e489 | Jan Kiszka | |
1132 | f3e1bed8 | Peter Maydell | if (!kvm_gsi_routing_enabled()) {
|
1133 | 92b4e489 | Jan Kiszka | return -ENOSYS;
|
1134 | 92b4e489 | Jan Kiszka | } |
1135 | 92b4e489 | Jan Kiszka | |
1136 | 92b4e489 | Jan Kiszka | virq = kvm_irqchip_get_virq(s); |
1137 | 92b4e489 | Jan Kiszka | if (virq < 0) { |
1138 | 92b4e489 | Jan Kiszka | return virq;
|
1139 | 92b4e489 | Jan Kiszka | } |
1140 | 92b4e489 | Jan Kiszka | |
1141 | 92b4e489 | Jan Kiszka | kroute.gsi = virq; |
1142 | 92b4e489 | Jan Kiszka | kroute.type = KVM_IRQ_ROUTING_MSI; |
1143 | 92b4e489 | Jan Kiszka | kroute.flags = 0;
|
1144 | 92b4e489 | Jan Kiszka | kroute.u.msi.address_lo = (uint32_t)msg.address; |
1145 | 92b4e489 | Jan Kiszka | kroute.u.msi.address_hi = msg.address >> 32;
|
1146 | 92b4e489 | Jan Kiszka | kroute.u.msi.data = msg.data; |
1147 | 92b4e489 | Jan Kiszka | |
1148 | 92b4e489 | Jan Kiszka | kvm_add_routing_entry(s, &kroute); |
1149 | 92b4e489 | Jan Kiszka | |
1150 | 92b4e489 | Jan Kiszka | return virq;
|
1151 | 92b4e489 | Jan Kiszka | } |
1152 | 92b4e489 | Jan Kiszka | |
1153 | cc57407e | Jan Kiszka | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) |
1154 | cc57407e | Jan Kiszka | { |
1155 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry kroute;
|
1156 | cc57407e | Jan Kiszka | |
1157 | cc57407e | Jan Kiszka | if (!kvm_irqchip_in_kernel()) {
|
1158 | cc57407e | Jan Kiszka | return -ENOSYS;
|
1159 | cc57407e | Jan Kiszka | } |
1160 | cc57407e | Jan Kiszka | |
1161 | cc57407e | Jan Kiszka | kroute.gsi = virq; |
1162 | cc57407e | Jan Kiszka | kroute.type = KVM_IRQ_ROUTING_MSI; |
1163 | cc57407e | Jan Kiszka | kroute.flags = 0;
|
1164 | cc57407e | Jan Kiszka | kroute.u.msi.address_lo = (uint32_t)msg.address; |
1165 | cc57407e | Jan Kiszka | kroute.u.msi.address_hi = msg.address >> 32;
|
1166 | cc57407e | Jan Kiszka | kroute.u.msi.data = msg.data; |
1167 | cc57407e | Jan Kiszka | |
1168 | cc57407e | Jan Kiszka | return kvm_update_routing_entry(s, &kroute);
|
1169 | cc57407e | Jan Kiszka | } |
1170 | cc57407e | Jan Kiszka | |
1171 | 39853bbc | Jan Kiszka | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign) |
1172 | 39853bbc | Jan Kiszka | { |
1173 | 39853bbc | Jan Kiszka | struct kvm_irqfd irqfd = {
|
1174 | 39853bbc | Jan Kiszka | .fd = fd, |
1175 | 39853bbc | Jan Kiszka | .gsi = virq, |
1176 | 39853bbc | Jan Kiszka | .flags = assign ? 0 : KVM_IRQFD_FLAG_DEASSIGN,
|
1177 | 39853bbc | Jan Kiszka | }; |
1178 | 39853bbc | Jan Kiszka | |
1179 | cc7e0ddf | Peter Maydell | if (!kvm_irqfds_enabled()) {
|
1180 | 39853bbc | Jan Kiszka | return -ENOSYS;
|
1181 | 39853bbc | Jan Kiszka | } |
1182 | 39853bbc | Jan Kiszka | |
1183 | 39853bbc | Jan Kiszka | return kvm_vm_ioctl(s, KVM_IRQFD, &irqfd);
|
1184 | 39853bbc | Jan Kiszka | } |
1185 | 39853bbc | Jan Kiszka | |
1186 | 84b058d7 | Jan Kiszka | #else /* !KVM_CAP_IRQ_ROUTING */ |
1187 | 84b058d7 | Jan Kiszka | |
1188 | 84b058d7 | Jan Kiszka | static void kvm_init_irq_routing(KVMState *s) |
1189 | 84b058d7 | Jan Kiszka | { |
1190 | 84b058d7 | Jan Kiszka | } |
1191 | 04fa27f5 | Jan Kiszka | |
1192 | d3d3bef0 | Jan Kiszka | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1193 | d3d3bef0 | Jan Kiszka | { |
1194 | d3d3bef0 | Jan Kiszka | } |
1195 | d3d3bef0 | Jan Kiszka | |
1196 | 04fa27f5 | Jan Kiszka | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
|
1197 | 04fa27f5 | Jan Kiszka | { |
1198 | 04fa27f5 | Jan Kiszka | abort(); |
1199 | 04fa27f5 | Jan Kiszka | } |
1200 | 92b4e489 | Jan Kiszka | |
1201 | 92b4e489 | Jan Kiszka | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
|
1202 | 92b4e489 | Jan Kiszka | { |
1203 | df410675 | Alex Williamson | return -ENOSYS;
|
1204 | 92b4e489 | Jan Kiszka | } |
1205 | 39853bbc | Jan Kiszka | |
1206 | 39853bbc | Jan Kiszka | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign) |
1207 | 39853bbc | Jan Kiszka | { |
1208 | 39853bbc | Jan Kiszka | abort(); |
1209 | 39853bbc | Jan Kiszka | } |
1210 | 84b058d7 | Jan Kiszka | #endif /* !KVM_CAP_IRQ_ROUTING */ |
1211 | 84b058d7 | Jan Kiszka | |
1212 | b131c74a | Jan Kiszka | int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, int virq) |
1213 | 39853bbc | Jan Kiszka | { |
1214 | b131c74a | Jan Kiszka | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), virq, true); |
1215 | 39853bbc | Jan Kiszka | } |
1216 | 39853bbc | Jan Kiszka | |
1217 | b131c74a | Jan Kiszka | int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq) |
1218 | 15b2bd18 | Paolo Bonzini | { |
1219 | b131c74a | Jan Kiszka | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), virq, false); |
1220 | 15b2bd18 | Paolo Bonzini | } |
1221 | 15b2bd18 | Paolo Bonzini | |
1222 | 84b058d7 | Jan Kiszka | static int kvm_irqchip_create(KVMState *s) |
1223 | 84b058d7 | Jan Kiszka | { |
1224 | 84b058d7 | Jan Kiszka | QemuOptsList *list = qemu_find_opts("machine");
|
1225 | 84b058d7 | Jan Kiszka | int ret;
|
1226 | 84b058d7 | Jan Kiszka | |
1227 | 84b058d7 | Jan Kiszka | if (QTAILQ_EMPTY(&list->head) ||
|
1228 | 84b058d7 | Jan Kiszka | !qemu_opt_get_bool(QTAILQ_FIRST(&list->head), |
1229 | a24b9106 | Jan Kiszka | "kernel_irqchip", true) || |
1230 | 84b058d7 | Jan Kiszka | !kvm_check_extension(s, KVM_CAP_IRQCHIP)) { |
1231 | 84b058d7 | Jan Kiszka | return 0; |
1232 | 84b058d7 | Jan Kiszka | } |
1233 | 84b058d7 | Jan Kiszka | |
1234 | 84b058d7 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP); |
1235 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
1236 | 84b058d7 | Jan Kiszka | fprintf(stderr, "Create kernel irqchip failed\n");
|
1237 | 84b058d7 | Jan Kiszka | return ret;
|
1238 | 84b058d7 | Jan Kiszka | } |
1239 | 84b058d7 | Jan Kiszka | |
1240 | 3d4b2649 | Jan Kiszka | kvm_kernel_irqchip = true;
|
1241 | 7ae26bd4 | Peter Maydell | /* If we have an in-kernel IRQ chip then we must have asynchronous
|
1242 | 7ae26bd4 | Peter Maydell | * interrupt delivery (though the reverse is not necessarily true)
|
1243 | 7ae26bd4 | Peter Maydell | */
|
1244 | 7ae26bd4 | Peter Maydell | kvm_async_interrupts_allowed = true;
|
1245 | 84b058d7 | Jan Kiszka | |
1246 | 84b058d7 | Jan Kiszka | kvm_init_irq_routing(s); |
1247 | 84b058d7 | Jan Kiszka | |
1248 | 84b058d7 | Jan Kiszka | return 0; |
1249 | 84b058d7 | Jan Kiszka | } |
1250 | 84b058d7 | Jan Kiszka | |
1251 | 3ed444e9 | Dunrong Huang | static int kvm_max_vcpus(KVMState *s) |
1252 | 3ed444e9 | Dunrong Huang | { |
1253 | 3ed444e9 | Dunrong Huang | int ret;
|
1254 | 3ed444e9 | Dunrong Huang | |
1255 | 3ed444e9 | Dunrong Huang | /* Find number of supported CPUs using the recommended
|
1256 | 3ed444e9 | Dunrong Huang | * procedure from the kernel API documentation to cope with
|
1257 | 3ed444e9 | Dunrong Huang | * older kernels that may be missing capabilities.
|
1258 | 3ed444e9 | Dunrong Huang | */
|
1259 | 3ed444e9 | Dunrong Huang | ret = kvm_check_extension(s, KVM_CAP_MAX_VCPUS); |
1260 | 3ed444e9 | Dunrong Huang | if (ret) {
|
1261 | 3ed444e9 | Dunrong Huang | return ret;
|
1262 | 3ed444e9 | Dunrong Huang | } |
1263 | 3ed444e9 | Dunrong Huang | ret = kvm_check_extension(s, KVM_CAP_NR_VCPUS); |
1264 | 3ed444e9 | Dunrong Huang | if (ret) {
|
1265 | 3ed444e9 | Dunrong Huang | return ret;
|
1266 | 3ed444e9 | Dunrong Huang | } |
1267 | 3ed444e9 | Dunrong Huang | |
1268 | 3ed444e9 | Dunrong Huang | return 4; |
1269 | 3ed444e9 | Dunrong Huang | } |
1270 | 3ed444e9 | Dunrong Huang | |
1271 | cad1e282 | Jan Kiszka | int kvm_init(void) |
1272 | 05330448 | aliguori | { |
1273 | 168ccc11 | Jan Kiszka | static const char upgrade_note[] = |
1274 | 168ccc11 | Jan Kiszka | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
|
1275 | 168ccc11 | Jan Kiszka | "(see http://sourceforge.net/projects/kvm).\n";
|
1276 | 05330448 | aliguori | KVMState *s; |
1277 | 94a8d39a | Jan Kiszka | const KVMCapabilityInfo *missing_cap;
|
1278 | 05330448 | aliguori | int ret;
|
1279 | 05330448 | aliguori | int i;
|
1280 | 3ed444e9 | Dunrong Huang | int max_vcpus;
|
1281 | 05330448 | aliguori | |
1282 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(KVMState));
|
1283 | 05330448 | aliguori | |
1284 | 3145fcb6 | David Gibson | /*
|
1285 | 3145fcb6 | David Gibson | * On systems where the kernel can support different base page
|
1286 | 3145fcb6 | David Gibson | * sizes, host page size may be different from TARGET_PAGE_SIZE,
|
1287 | 3145fcb6 | David Gibson | * even with KVM. TARGET_PAGE_SIZE is assumed to be the minimum
|
1288 | 3145fcb6 | David Gibson | * page size for the system though.
|
1289 | 3145fcb6 | David Gibson | */
|
1290 | 3145fcb6 | David Gibson | assert(TARGET_PAGE_SIZE <= getpagesize()); |
1291 | 3145fcb6 | David Gibson | |
1292 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1293 | 72cf2d4f | Blue Swirl | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
1294 | e22a25c9 | aliguori | #endif
|
1295 | a426e122 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
1296 | 05330448 | aliguori | s->slots[i].slot = i; |
1297 | a426e122 | Jan Kiszka | } |
1298 | 05330448 | aliguori | s->vmfd = -1;
|
1299 | 40ff6d7e | Kevin Wolf | s->fd = qemu_open("/dev/kvm", O_RDWR);
|
1300 | 05330448 | aliguori | if (s->fd == -1) { |
1301 | 05330448 | aliguori | fprintf(stderr, "Could not access KVM kernel module: %m\n");
|
1302 | 05330448 | aliguori | ret = -errno; |
1303 | 05330448 | aliguori | goto err;
|
1304 | 05330448 | aliguori | } |
1305 | 05330448 | aliguori | |
1306 | 05330448 | aliguori | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
|
1307 | 05330448 | aliguori | if (ret < KVM_API_VERSION) {
|
1308 | a426e122 | Jan Kiszka | if (ret > 0) { |
1309 | 05330448 | aliguori | ret = -EINVAL; |
1310 | a426e122 | Jan Kiszka | } |
1311 | 05330448 | aliguori | fprintf(stderr, "kvm version too old\n");
|
1312 | 05330448 | aliguori | goto err;
|
1313 | 05330448 | aliguori | } |
1314 | 05330448 | aliguori | |
1315 | 05330448 | aliguori | if (ret > KVM_API_VERSION) {
|
1316 | 05330448 | aliguori | ret = -EINVAL; |
1317 | 05330448 | aliguori | fprintf(stderr, "kvm version not supported\n");
|
1318 | 05330448 | aliguori | goto err;
|
1319 | 05330448 | aliguori | } |
1320 | 05330448 | aliguori | |
1321 | 3ed444e9 | Dunrong Huang | max_vcpus = kvm_max_vcpus(s); |
1322 | 3ed444e9 | Dunrong Huang | if (smp_cpus > max_vcpus) {
|
1323 | 3ed444e9 | Dunrong Huang | ret = -EINVAL; |
1324 | 3ed444e9 | Dunrong Huang | fprintf(stderr, "Number of SMP cpus requested (%d) exceeds max cpus "
|
1325 | 3ed444e9 | Dunrong Huang | "supported by KVM (%d)\n", smp_cpus, max_vcpus);
|
1326 | 3ed444e9 | Dunrong Huang | goto err;
|
1327 | 3ed444e9 | Dunrong Huang | } |
1328 | 3ed444e9 | Dunrong Huang | |
1329 | 05330448 | aliguori | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
|
1330 | 0104dcac | Alexander Graf | if (s->vmfd < 0) { |
1331 | 0104dcac | Alexander Graf | #ifdef TARGET_S390X
|
1332 | 0104dcac | Alexander Graf | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
|
1333 | 0104dcac | Alexander Graf | "your host kernel command line\n");
|
1334 | 0104dcac | Alexander Graf | #endif
|
1335 | db9eae1c | Xu He Jie | ret = s->vmfd; |
1336 | 05330448 | aliguori | goto err;
|
1337 | 0104dcac | Alexander Graf | } |
1338 | 05330448 | aliguori | |
1339 | 94a8d39a | Jan Kiszka | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
1340 | 94a8d39a | Jan Kiszka | if (!missing_cap) {
|
1341 | 94a8d39a | Jan Kiszka | missing_cap = |
1342 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(s, kvm_arch_required_capabilities); |
1343 | 05330448 | aliguori | } |
1344 | 94a8d39a | Jan Kiszka | if (missing_cap) {
|
1345 | ad7b8b33 | Anthony Liguori | ret = -EINVAL; |
1346 | 94a8d39a | Jan Kiszka | fprintf(stderr, "kvm does not support %s\n%s",
|
1347 | 94a8d39a | Jan Kiszka | missing_cap->name, upgrade_note); |
1348 | d85dc283 | aliguori | goto err;
|
1349 | d85dc283 | aliguori | } |
1350 | d85dc283 | aliguori | |
1351 | ad7b8b33 | Anthony Liguori | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
1352 | f65ed4c1 | aliguori | |
1353 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 1;
|
1354 | 14a09518 | Lai Jiangshan | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
1355 | e69917e2 | Jan Kiszka | if (ret > 0) { |
1356 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 0;
|
1357 | e69917e2 | Jan Kiszka | } |
1358 | e69917e2 | Jan Kiszka | |
1359 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
1360 | a0fb002c | Jan Kiszka | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
1361 | a0fb002c | Jan Kiszka | #endif
|
1362 | a0fb002c | Jan Kiszka | |
1363 | b0b1d690 | Jan Kiszka | s->robust_singlestep = |
1364 | b0b1d690 | Jan Kiszka | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
1365 | b0b1d690 | Jan Kiszka | |
1366 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
1367 | ff44f1a3 | Jan Kiszka | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
1368 | ff44f1a3 | Jan Kiszka | #endif
|
1369 | ff44f1a3 | Jan Kiszka | |
1370 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
1371 | f1665b21 | Sheng Yang | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
1372 | f1665b21 | Sheng Yang | #endif
|
1373 | f1665b21 | Sheng Yang | |
1374 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
1375 | f1665b21 | Sheng Yang | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
1376 | f1665b21 | Sheng Yang | #endif
|
1377 | f1665b21 | Sheng Yang | |
1378 | 8a7c7393 | Jan Kiszka | #ifdef KVM_CAP_PIT_STATE2
|
1379 | 8a7c7393 | Jan Kiszka | s->pit_state2 = kvm_check_extension(s, KVM_CAP_PIT_STATE2); |
1380 | 8a7c7393 | Jan Kiszka | #endif
|
1381 | 8a7c7393 | Jan Kiszka | |
1382 | d3d3bef0 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
1383 | 4a3adebb | Jan Kiszka | s->direct_msi = (kvm_check_extension(s, KVM_CAP_SIGNAL_MSI) > 0);
|
1384 | d3d3bef0 | Jan Kiszka | #endif
|
1385 | 4a3adebb | Jan Kiszka | |
1386 | 3ab73842 | Jan Kiszka | s->intx_set_mask = kvm_check_extension(s, KVM_CAP_PCI_2_3); |
1387 | 3ab73842 | Jan Kiszka | |
1388 | e333cd69 | Jan Kiszka | s->irq_set_ioctl = KVM_IRQ_LINE; |
1389 | 8732fbd2 | Peter Maydell | if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) {
|
1390 | e333cd69 | Jan Kiszka | s->irq_set_ioctl = KVM_IRQ_LINE_STATUS; |
1391 | 8732fbd2 | Peter Maydell | } |
1392 | 8732fbd2 | Peter Maydell | |
1393 | cad1e282 | Jan Kiszka | ret = kvm_arch_init(s); |
1394 | a426e122 | Jan Kiszka | if (ret < 0) { |
1395 | 05330448 | aliguori | goto err;
|
1396 | a426e122 | Jan Kiszka | } |
1397 | 05330448 | aliguori | |
1398 | 84b058d7 | Jan Kiszka | ret = kvm_irqchip_create(s); |
1399 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
1400 | 84b058d7 | Jan Kiszka | goto err;
|
1401 | 84b058d7 | Jan Kiszka | } |
1402 | 84b058d7 | Jan Kiszka | |
1403 | 05330448 | aliguori | kvm_state = s; |
1404 | 7376e582 | Avi Kivity | memory_listener_register(&kvm_memory_listener, NULL);
|
1405 | 05330448 | aliguori | |
1406 | d2f2b8a7 | Stefan Hajnoczi | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
1407 | d2f2b8a7 | Stefan Hajnoczi | |
1408 | aa7f74d1 | Jan Kiszka | cpu_interrupt_handler = kvm_handle_interrupt; |
1409 | aa7f74d1 | Jan Kiszka | |
1410 | 05330448 | aliguori | return 0; |
1411 | 05330448 | aliguori | |
1412 | 05330448 | aliguori | err:
|
1413 | 6d1cc321 | Stefan Weil | if (s->vmfd >= 0) { |
1414 | 6d1cc321 | Stefan Weil | close(s->vmfd); |
1415 | 6d1cc321 | Stefan Weil | } |
1416 | 6d1cc321 | Stefan Weil | if (s->fd != -1) { |
1417 | 6d1cc321 | Stefan Weil | close(s->fd); |
1418 | 05330448 | aliguori | } |
1419 | 7267c094 | Anthony Liguori | g_free(s); |
1420 | 05330448 | aliguori | |
1421 | 05330448 | aliguori | return ret;
|
1422 | 05330448 | aliguori | } |
1423 | 05330448 | aliguori | |
1424 | b30e93e9 | Jan Kiszka | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
1425 | b30e93e9 | Jan Kiszka | uint32_t count) |
1426 | 05330448 | aliguori | { |
1427 | 05330448 | aliguori | int i;
|
1428 | 05330448 | aliguori | uint8_t *ptr = data; |
1429 | 05330448 | aliguori | |
1430 | 05330448 | aliguori | for (i = 0; i < count; i++) { |
1431 | 05330448 | aliguori | if (direction == KVM_EXIT_IO_IN) {
|
1432 | 05330448 | aliguori | switch (size) {
|
1433 | 05330448 | aliguori | case 1: |
1434 | afcea8cb | Blue Swirl | stb_p(ptr, cpu_inb(port)); |
1435 | 05330448 | aliguori | break;
|
1436 | 05330448 | aliguori | case 2: |
1437 | afcea8cb | Blue Swirl | stw_p(ptr, cpu_inw(port)); |
1438 | 05330448 | aliguori | break;
|
1439 | 05330448 | aliguori | case 4: |
1440 | afcea8cb | Blue Swirl | stl_p(ptr, cpu_inl(port)); |
1441 | 05330448 | aliguori | break;
|
1442 | 05330448 | aliguori | } |
1443 | 05330448 | aliguori | } else {
|
1444 | 05330448 | aliguori | switch (size) {
|
1445 | 05330448 | aliguori | case 1: |
1446 | afcea8cb | Blue Swirl | cpu_outb(port, ldub_p(ptr)); |
1447 | 05330448 | aliguori | break;
|
1448 | 05330448 | aliguori | case 2: |
1449 | afcea8cb | Blue Swirl | cpu_outw(port, lduw_p(ptr)); |
1450 | 05330448 | aliguori | break;
|
1451 | 05330448 | aliguori | case 4: |
1452 | afcea8cb | Blue Swirl | cpu_outl(port, ldl_p(ptr)); |
1453 | 05330448 | aliguori | break;
|
1454 | 05330448 | aliguori | } |
1455 | 05330448 | aliguori | } |
1456 | 05330448 | aliguori | |
1457 | 05330448 | aliguori | ptr += size; |
1458 | 05330448 | aliguori | } |
1459 | 05330448 | aliguori | } |
1460 | 05330448 | aliguori | |
1461 | 9349b4f9 | Andreas Färber | static int kvm_handle_internal_error(CPUArchState *env, struct kvm_run *run) |
1462 | 7c80eef8 | Marcelo Tosatti | { |
1463 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM internal error.");
|
1464 | 7c80eef8 | Marcelo Tosatti | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
|
1465 | 7c80eef8 | Marcelo Tosatti | int i;
|
1466 | 7c80eef8 | Marcelo Tosatti | |
1467 | bb44e0d1 | Jan Kiszka | fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
|
1468 | 7c80eef8 | Marcelo Tosatti | for (i = 0; i < run->internal.ndata; ++i) { |
1469 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
1470 | 7c80eef8 | Marcelo Tosatti | i, (uint64_t)run->internal.data[i]); |
1471 | 7c80eef8 | Marcelo Tosatti | } |
1472 | bb44e0d1 | Jan Kiszka | } else {
|
1473 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "\n");
|
1474 | 7c80eef8 | Marcelo Tosatti | } |
1475 | 7c80eef8 | Marcelo Tosatti | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
|
1476 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "emulation failure\n");
|
1477 | a426e122 | Jan Kiszka | if (!kvm_arch_stop_on_emulation_error(env)) {
|
1478 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
1479 | d73cd8f4 | Jan Kiszka | return EXCP_INTERRUPT;
|
1480 | a426e122 | Jan Kiszka | } |
1481 | 7c80eef8 | Marcelo Tosatti | } |
1482 | 7c80eef8 | Marcelo Tosatti | /* FIXME: Should trigger a qmp message to let management know
|
1483 | 7c80eef8 | Marcelo Tosatti | * something went wrong.
|
1484 | 7c80eef8 | Marcelo Tosatti | */
|
1485 | 73aaec4a | Jan Kiszka | return -1; |
1486 | 7c80eef8 | Marcelo Tosatti | } |
1487 | 7c80eef8 | Marcelo Tosatti | |
1488 | 62a2744c | Sheng Yang | void kvm_flush_coalesced_mmio_buffer(void) |
1489 | f65ed4c1 | aliguori | { |
1490 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
1491 | 1cae88b9 | Avi Kivity | |
1492 | 1cae88b9 | Avi Kivity | if (s->coalesced_flush_in_progress) {
|
1493 | 1cae88b9 | Avi Kivity | return;
|
1494 | 1cae88b9 | Avi Kivity | } |
1495 | 1cae88b9 | Avi Kivity | |
1496 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = true;
|
1497 | 1cae88b9 | Avi Kivity | |
1498 | 62a2744c | Sheng Yang | if (s->coalesced_mmio_ring) {
|
1499 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
|
1500 | f65ed4c1 | aliguori | while (ring->first != ring->last) {
|
1501 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio *ent;
|
1502 | f65ed4c1 | aliguori | |
1503 | f65ed4c1 | aliguori | ent = &ring->coalesced_mmio[ring->first]; |
1504 | f65ed4c1 | aliguori | |
1505 | f65ed4c1 | aliguori | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
1506 | 85199474 | Marcelo Tosatti | smp_wmb(); |
1507 | f65ed4c1 | aliguori | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
|
1508 | f65ed4c1 | aliguori | } |
1509 | f65ed4c1 | aliguori | } |
1510 | 1cae88b9 | Avi Kivity | |
1511 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = false;
|
1512 | f65ed4c1 | aliguori | } |
1513 | f65ed4c1 | aliguori | |
1514 | 2705d56a | Jan Kiszka | static void do_kvm_cpu_synchronize_state(void *_env) |
1515 | 4c0960c0 | Avi Kivity | { |
1516 | 9349b4f9 | Andreas Färber | CPUArchState *env = _env; |
1517 | 2705d56a | Jan Kiszka | |
1518 | 9ded2744 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
1519 | 4c0960c0 | Avi Kivity | kvm_arch_get_registers(env); |
1520 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 1;
|
1521 | 4c0960c0 | Avi Kivity | } |
1522 | 4c0960c0 | Avi Kivity | } |
1523 | 4c0960c0 | Avi Kivity | |
1524 | 9349b4f9 | Andreas Färber | void kvm_cpu_synchronize_state(CPUArchState *env)
|
1525 | 2705d56a | Jan Kiszka | { |
1526 | a426e122 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
1527 | 2705d56a | Jan Kiszka | run_on_cpu(env, do_kvm_cpu_synchronize_state, env); |
1528 | a426e122 | Jan Kiszka | } |
1529 | 2705d56a | Jan Kiszka | } |
1530 | 2705d56a | Jan Kiszka | |
1531 | 9349b4f9 | Andreas Färber | void kvm_cpu_synchronize_post_reset(CPUArchState *env)
|
1532 | ea375f9a | Jan Kiszka | { |
1533 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RESET_STATE); |
1534 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
1535 | ea375f9a | Jan Kiszka | } |
1536 | ea375f9a | Jan Kiszka | |
1537 | 9349b4f9 | Andreas Färber | void kvm_cpu_synchronize_post_init(CPUArchState *env)
|
1538 | ea375f9a | Jan Kiszka | { |
1539 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_FULL_STATE); |
1540 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
1541 | ea375f9a | Jan Kiszka | } |
1542 | ea375f9a | Jan Kiszka | |
1543 | 9349b4f9 | Andreas Färber | int kvm_cpu_exec(CPUArchState *env)
|
1544 | 05330448 | aliguori | { |
1545 | 05330448 | aliguori | struct kvm_run *run = env->kvm_run;
|
1546 | 7cbb533f | Jan Kiszka | int ret, run_ret;
|
1547 | 05330448 | aliguori | |
1548 | 8c0d577e | Blue Swirl | DPRINTF("kvm_cpu_exec()\n");
|
1549 | 05330448 | aliguori | |
1550 | 99036865 | Jan Kiszka | if (kvm_arch_process_async_events(env)) {
|
1551 | 9ccfac9e | Jan Kiszka | env->exit_request = 0;
|
1552 | 6792a57b | Jan Kiszka | return EXCP_HLT;
|
1553 | 9ccfac9e | Jan Kiszka | } |
1554 | 0af691d7 | Marcelo Tosatti | |
1555 | 9ccfac9e | Jan Kiszka | do {
|
1556 | 9ded2744 | Jan Kiszka | if (env->kvm_vcpu_dirty) {
|
1557 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); |
1558 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
1559 | 4c0960c0 | Avi Kivity | } |
1560 | 4c0960c0 | Avi Kivity | |
1561 | 8c14c173 | Jan Kiszka | kvm_arch_pre_run(env, run); |
1562 | 9ccfac9e | Jan Kiszka | if (env->exit_request) {
|
1563 | 9ccfac9e | Jan Kiszka | DPRINTF("interrupt exit requested\n");
|
1564 | 9ccfac9e | Jan Kiszka | /*
|
1565 | 9ccfac9e | Jan Kiszka | * KVM requires us to reenter the kernel after IO exits to complete
|
1566 | 9ccfac9e | Jan Kiszka | * instruction emulation. This self-signal will ensure that we
|
1567 | 9ccfac9e | Jan Kiszka | * leave ASAP again.
|
1568 | 9ccfac9e | Jan Kiszka | */
|
1569 | 9ccfac9e | Jan Kiszka | qemu_cpu_kick_self(); |
1570 | 9ccfac9e | Jan Kiszka | } |
1571 | d549db5a | Glauber Costa | qemu_mutex_unlock_iothread(); |
1572 | 9ccfac9e | Jan Kiszka | |
1573 | 7cbb533f | Jan Kiszka | run_ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
|
1574 | 9ccfac9e | Jan Kiszka | |
1575 | d549db5a | Glauber Costa | qemu_mutex_lock_iothread(); |
1576 | 05330448 | aliguori | kvm_arch_post_run(env, run); |
1577 | 05330448 | aliguori | |
1578 | 7cbb533f | Jan Kiszka | if (run_ret < 0) { |
1579 | dc77d341 | Jan Kiszka | if (run_ret == -EINTR || run_ret == -EAGAIN) {
|
1580 | dc77d341 | Jan Kiszka | DPRINTF("io window exit\n");
|
1581 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1582 | dc77d341 | Jan Kiszka | break;
|
1583 | dc77d341 | Jan Kiszka | } |
1584 | 7b011fbc | Michael Ellerman | fprintf(stderr, "error: kvm run failed %s\n",
|
1585 | 7b011fbc | Michael Ellerman | strerror(-run_ret)); |
1586 | 05330448 | aliguori | abort(); |
1587 | 05330448 | aliguori | } |
1588 | 05330448 | aliguori | |
1589 | 05330448 | aliguori | switch (run->exit_reason) {
|
1590 | 05330448 | aliguori | case KVM_EXIT_IO:
|
1591 | 8c0d577e | Blue Swirl | DPRINTF("handle_io\n");
|
1592 | b30e93e9 | Jan Kiszka | kvm_handle_io(run->io.port, |
1593 | b30e93e9 | Jan Kiszka | (uint8_t *)run + run->io.data_offset, |
1594 | b30e93e9 | Jan Kiszka | run->io.direction, |
1595 | b30e93e9 | Jan Kiszka | run->io.size, |
1596 | b30e93e9 | Jan Kiszka | run->io.count); |
1597 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1598 | 05330448 | aliguori | break;
|
1599 | 05330448 | aliguori | case KVM_EXIT_MMIO:
|
1600 | 8c0d577e | Blue Swirl | DPRINTF("handle_mmio\n");
|
1601 | 05330448 | aliguori | cpu_physical_memory_rw(run->mmio.phys_addr, |
1602 | 05330448 | aliguori | run->mmio.data, |
1603 | 05330448 | aliguori | run->mmio.len, |
1604 | 05330448 | aliguori | run->mmio.is_write); |
1605 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1606 | 05330448 | aliguori | break;
|
1607 | 05330448 | aliguori | case KVM_EXIT_IRQ_WINDOW_OPEN:
|
1608 | 8c0d577e | Blue Swirl | DPRINTF("irq_window_open\n");
|
1609 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1610 | 05330448 | aliguori | break;
|
1611 | 05330448 | aliguori | case KVM_EXIT_SHUTDOWN:
|
1612 | 8c0d577e | Blue Swirl | DPRINTF("shutdown\n");
|
1613 | 05330448 | aliguori | qemu_system_reset_request(); |
1614 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1615 | 05330448 | aliguori | break;
|
1616 | 05330448 | aliguori | case KVM_EXIT_UNKNOWN:
|
1617 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
1618 | bb44e0d1 | Jan Kiszka | (uint64_t)run->hw.hardware_exit_reason); |
1619 | 73aaec4a | Jan Kiszka | ret = -1;
|
1620 | 05330448 | aliguori | break;
|
1621 | 7c80eef8 | Marcelo Tosatti | case KVM_EXIT_INTERNAL_ERROR:
|
1622 | 73aaec4a | Jan Kiszka | ret = kvm_handle_internal_error(env, run); |
1623 | 7c80eef8 | Marcelo Tosatti | break;
|
1624 | 05330448 | aliguori | default:
|
1625 | 8c0d577e | Blue Swirl | DPRINTF("kvm_arch_handle_exit\n");
|
1626 | 05330448 | aliguori | ret = kvm_arch_handle_exit(env, run); |
1627 | 05330448 | aliguori | break;
|
1628 | 05330448 | aliguori | } |
1629 | d73cd8f4 | Jan Kiszka | } while (ret == 0); |
1630 | 05330448 | aliguori | |
1631 | 73aaec4a | Jan Kiszka | if (ret < 0) { |
1632 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
1633 | 0461d5a6 | Luiz Capitulino | vm_stop(RUN_STATE_INTERNAL_ERROR); |
1634 | becfc390 | aliguori | } |
1635 | becfc390 | aliguori | |
1636 | 6792a57b | Jan Kiszka | env->exit_request = 0;
|
1637 | 05330448 | aliguori | return ret;
|
1638 | 05330448 | aliguori | } |
1639 | 05330448 | aliguori | |
1640 | 984b5181 | aliguori | int kvm_ioctl(KVMState *s, int type, ...) |
1641 | 05330448 | aliguori | { |
1642 | 05330448 | aliguori | int ret;
|
1643 | 984b5181 | aliguori | void *arg;
|
1644 | 984b5181 | aliguori | va_list ap; |
1645 | 05330448 | aliguori | |
1646 | 984b5181 | aliguori | va_start(ap, type); |
1647 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1648 | 984b5181 | aliguori | va_end(ap); |
1649 | 984b5181 | aliguori | |
1650 | 984b5181 | aliguori | ret = ioctl(s->fd, type, arg); |
1651 | a426e122 | Jan Kiszka | if (ret == -1) { |
1652 | 05330448 | aliguori | ret = -errno; |
1653 | a426e122 | Jan Kiszka | } |
1654 | 05330448 | aliguori | return ret;
|
1655 | 05330448 | aliguori | } |
1656 | 05330448 | aliguori | |
1657 | 984b5181 | aliguori | int kvm_vm_ioctl(KVMState *s, int type, ...) |
1658 | 05330448 | aliguori | { |
1659 | 05330448 | aliguori | int ret;
|
1660 | 984b5181 | aliguori | void *arg;
|
1661 | 984b5181 | aliguori | va_list ap; |
1662 | 984b5181 | aliguori | |
1663 | 984b5181 | aliguori | va_start(ap, type); |
1664 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1665 | 984b5181 | aliguori | va_end(ap); |
1666 | 05330448 | aliguori | |
1667 | 984b5181 | aliguori | ret = ioctl(s->vmfd, type, arg); |
1668 | a426e122 | Jan Kiszka | if (ret == -1) { |
1669 | 05330448 | aliguori | ret = -errno; |
1670 | a426e122 | Jan Kiszka | } |
1671 | 05330448 | aliguori | return ret;
|
1672 | 05330448 | aliguori | } |
1673 | 05330448 | aliguori | |
1674 | 9349b4f9 | Andreas Färber | int kvm_vcpu_ioctl(CPUArchState *env, int type, ...) |
1675 | 05330448 | aliguori | { |
1676 | 05330448 | aliguori | int ret;
|
1677 | 984b5181 | aliguori | void *arg;
|
1678 | 984b5181 | aliguori | va_list ap; |
1679 | 984b5181 | aliguori | |
1680 | 984b5181 | aliguori | va_start(ap, type); |
1681 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1682 | 984b5181 | aliguori | va_end(ap); |
1683 | 05330448 | aliguori | |
1684 | 984b5181 | aliguori | ret = ioctl(env->kvm_fd, type, arg); |
1685 | a426e122 | Jan Kiszka | if (ret == -1) { |
1686 | 05330448 | aliguori | ret = -errno; |
1687 | a426e122 | Jan Kiszka | } |
1688 | 05330448 | aliguori | return ret;
|
1689 | 05330448 | aliguori | } |
1690 | bd322087 | aliguori | |
1691 | bd322087 | aliguori | int kvm_has_sync_mmu(void) |
1692 | bd322087 | aliguori | { |
1693 | 94a8d39a | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
|
1694 | bd322087 | aliguori | } |
1695 | e22a25c9 | aliguori | |
1696 | a0fb002c | Jan Kiszka | int kvm_has_vcpu_events(void) |
1697 | a0fb002c | Jan Kiszka | { |
1698 | a0fb002c | Jan Kiszka | return kvm_state->vcpu_events;
|
1699 | a0fb002c | Jan Kiszka | } |
1700 | a0fb002c | Jan Kiszka | |
1701 | b0b1d690 | Jan Kiszka | int kvm_has_robust_singlestep(void) |
1702 | b0b1d690 | Jan Kiszka | { |
1703 | b0b1d690 | Jan Kiszka | return kvm_state->robust_singlestep;
|
1704 | b0b1d690 | Jan Kiszka | } |
1705 | b0b1d690 | Jan Kiszka | |
1706 | ff44f1a3 | Jan Kiszka | int kvm_has_debugregs(void) |
1707 | ff44f1a3 | Jan Kiszka | { |
1708 | ff44f1a3 | Jan Kiszka | return kvm_state->debugregs;
|
1709 | ff44f1a3 | Jan Kiszka | } |
1710 | ff44f1a3 | Jan Kiszka | |
1711 | f1665b21 | Sheng Yang | int kvm_has_xsave(void) |
1712 | f1665b21 | Sheng Yang | { |
1713 | f1665b21 | Sheng Yang | return kvm_state->xsave;
|
1714 | f1665b21 | Sheng Yang | } |
1715 | f1665b21 | Sheng Yang | |
1716 | f1665b21 | Sheng Yang | int kvm_has_xcrs(void) |
1717 | f1665b21 | Sheng Yang | { |
1718 | f1665b21 | Sheng Yang | return kvm_state->xcrs;
|
1719 | f1665b21 | Sheng Yang | } |
1720 | f1665b21 | Sheng Yang | |
1721 | 8a7c7393 | Jan Kiszka | int kvm_has_pit_state2(void) |
1722 | 8a7c7393 | Jan Kiszka | { |
1723 | 8a7c7393 | Jan Kiszka | return kvm_state->pit_state2;
|
1724 | 8a7c7393 | Jan Kiszka | } |
1725 | 8a7c7393 | Jan Kiszka | |
1726 | d2f2b8a7 | Stefan Hajnoczi | int kvm_has_many_ioeventfds(void) |
1727 | d2f2b8a7 | Stefan Hajnoczi | { |
1728 | d2f2b8a7 | Stefan Hajnoczi | if (!kvm_enabled()) {
|
1729 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
1730 | d2f2b8a7 | Stefan Hajnoczi | } |
1731 | d2f2b8a7 | Stefan Hajnoczi | return kvm_state->many_ioeventfds;
|
1732 | d2f2b8a7 | Stefan Hajnoczi | } |
1733 | d2f2b8a7 | Stefan Hajnoczi | |
1734 | 84b058d7 | Jan Kiszka | int kvm_has_gsi_routing(void) |
1735 | 84b058d7 | Jan Kiszka | { |
1736 | a9c5eb0d | Alexander Graf | #ifdef KVM_CAP_IRQ_ROUTING
|
1737 | 84b058d7 | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING);
|
1738 | a9c5eb0d | Alexander Graf | #else
|
1739 | a9c5eb0d | Alexander Graf | return false; |
1740 | a9c5eb0d | Alexander Graf | #endif
|
1741 | 84b058d7 | Jan Kiszka | } |
1742 | 84b058d7 | Jan Kiszka | |
1743 | 3ab73842 | Jan Kiszka | int kvm_has_intx_set_mask(void) |
1744 | 3ab73842 | Jan Kiszka | { |
1745 | 3ab73842 | Jan Kiszka | return kvm_state->intx_set_mask;
|
1746 | 3ab73842 | Jan Kiszka | } |
1747 | 3ab73842 | Jan Kiszka | |
1748 | fdec9918 | Christian Borntraeger | void *kvm_vmalloc(ram_addr_t size)
|
1749 | fdec9918 | Christian Borntraeger | { |
1750 | fdec9918 | Christian Borntraeger | #ifdef TARGET_S390X
|
1751 | fdec9918 | Christian Borntraeger | void *mem;
|
1752 | fdec9918 | Christian Borntraeger | |
1753 | fdec9918 | Christian Borntraeger | mem = kvm_arch_vmalloc(size); |
1754 | fdec9918 | Christian Borntraeger | if (mem) {
|
1755 | fdec9918 | Christian Borntraeger | return mem;
|
1756 | fdec9918 | Christian Borntraeger | } |
1757 | fdec9918 | Christian Borntraeger | #endif
|
1758 | fdec9918 | Christian Borntraeger | return qemu_vmalloc(size);
|
1759 | fdec9918 | Christian Borntraeger | } |
1760 | fdec9918 | Christian Borntraeger | |
1761 | 6f0437e8 | Jan Kiszka | void kvm_setup_guest_memory(void *start, size_t size) |
1762 | 6f0437e8 | Jan Kiszka | { |
1763 | 62fe8331 | Christian Borntraeger | #ifdef CONFIG_VALGRIND_H
|
1764 | 62fe8331 | Christian Borntraeger | VALGRIND_MAKE_MEM_DEFINED(start, size); |
1765 | 62fe8331 | Christian Borntraeger | #endif
|
1766 | 6f0437e8 | Jan Kiszka | if (!kvm_has_sync_mmu()) {
|
1767 | e78815a5 | Andreas Färber | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
|
1768 | 6f0437e8 | Jan Kiszka | |
1769 | 6f0437e8 | Jan Kiszka | if (ret) {
|
1770 | e78815a5 | Andreas Färber | perror("qemu_madvise");
|
1771 | e78815a5 | Andreas Färber | fprintf(stderr, |
1772 | e78815a5 | Andreas Färber | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
|
1773 | 6f0437e8 | Jan Kiszka | exit(1);
|
1774 | 6f0437e8 | Jan Kiszka | } |
1775 | 6f0437e8 | Jan Kiszka | } |
1776 | 6f0437e8 | Jan Kiszka | } |
1777 | 6f0437e8 | Jan Kiszka | |
1778 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1779 | 9349b4f9 | Andreas Färber | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUArchState *env,
|
1780 | e22a25c9 | aliguori | target_ulong pc) |
1781 | e22a25c9 | aliguori | { |
1782 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1783 | e22a25c9 | aliguori | |
1784 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) { |
1785 | a426e122 | Jan Kiszka | if (bp->pc == pc) {
|
1786 | e22a25c9 | aliguori | return bp;
|
1787 | a426e122 | Jan Kiszka | } |
1788 | e22a25c9 | aliguori | } |
1789 | e22a25c9 | aliguori | return NULL; |
1790 | e22a25c9 | aliguori | } |
1791 | e22a25c9 | aliguori | |
1792 | 9349b4f9 | Andreas Färber | int kvm_sw_breakpoints_active(CPUArchState *env)
|
1793 | e22a25c9 | aliguori | { |
1794 | 72cf2d4f | Blue Swirl | return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints);
|
1795 | e22a25c9 | aliguori | } |
1796 | e22a25c9 | aliguori | |
1797 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data {
|
1798 | 452e4751 | Glauber Costa | struct kvm_guest_debug dbg;
|
1799 | 9349b4f9 | Andreas Färber | CPUArchState *env; |
1800 | 452e4751 | Glauber Costa | int err;
|
1801 | 452e4751 | Glauber Costa | }; |
1802 | 452e4751 | Glauber Costa | |
1803 | 452e4751 | Glauber Costa | static void kvm_invoke_set_guest_debug(void *data) |
1804 | 452e4751 | Glauber Costa | { |
1805 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data *dbg_data = data;
|
1806 | 9349b4f9 | Andreas Färber | CPUArchState *env = dbg_data->env; |
1807 | b3807725 | Jan Kiszka | |
1808 | b3807725 | Jan Kiszka | dbg_data->err = kvm_vcpu_ioctl(env, KVM_SET_GUEST_DEBUG, &dbg_data->dbg); |
1809 | 452e4751 | Glauber Costa | } |
1810 | 452e4751 | Glauber Costa | |
1811 | 9349b4f9 | Andreas Färber | int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap) |
1812 | e22a25c9 | aliguori | { |
1813 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data data;
|
1814 | e22a25c9 | aliguori | |
1815 | b0b1d690 | Jan Kiszka | data.dbg.control = reinject_trap; |
1816 | e22a25c9 | aliguori | |
1817 | b0b1d690 | Jan Kiszka | if (env->singlestep_enabled) {
|
1818 | b0b1d690 | Jan Kiszka | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
1819 | b0b1d690 | Jan Kiszka | } |
1820 | 452e4751 | Glauber Costa | kvm_arch_update_guest_debug(env, &data.dbg); |
1821 | 452e4751 | Glauber Costa | data.env = env; |
1822 | e22a25c9 | aliguori | |
1823 | be41cbe0 | Jan Kiszka | run_on_cpu(env, kvm_invoke_set_guest_debug, &data); |
1824 | 452e4751 | Glauber Costa | return data.err;
|
1825 | e22a25c9 | aliguori | } |
1826 | e22a25c9 | aliguori | |
1827 | 9349b4f9 | Andreas Färber | int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
|
1828 | e22a25c9 | aliguori | target_ulong len, int type)
|
1829 | e22a25c9 | aliguori | { |
1830 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1831 | 9349b4f9 | Andreas Färber | CPUArchState *env; |
1832 | e22a25c9 | aliguori | int err;
|
1833 | e22a25c9 | aliguori | |
1834 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1835 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1836 | e22a25c9 | aliguori | if (bp) {
|
1837 | e22a25c9 | aliguori | bp->use_count++; |
1838 | e22a25c9 | aliguori | return 0; |
1839 | e22a25c9 | aliguori | } |
1840 | e22a25c9 | aliguori | |
1841 | 7267c094 | Anthony Liguori | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
1842 | a426e122 | Jan Kiszka | if (!bp) {
|
1843 | e22a25c9 | aliguori | return -ENOMEM;
|
1844 | a426e122 | Jan Kiszka | } |
1845 | e22a25c9 | aliguori | |
1846 | e22a25c9 | aliguori | bp->pc = addr; |
1847 | e22a25c9 | aliguori | bp->use_count = 1;
|
1848 | e22a25c9 | aliguori | err = kvm_arch_insert_sw_breakpoint(current_env, bp); |
1849 | e22a25c9 | aliguori | if (err) {
|
1850 | 7267c094 | Anthony Liguori | g_free(bp); |
1851 | e22a25c9 | aliguori | return err;
|
1852 | e22a25c9 | aliguori | } |
1853 | e22a25c9 | aliguori | |
1854 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints, |
1855 | e22a25c9 | aliguori | bp, entry); |
1856 | e22a25c9 | aliguori | } else {
|
1857 | e22a25c9 | aliguori | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
1858 | a426e122 | Jan Kiszka | if (err) {
|
1859 | e22a25c9 | aliguori | return err;
|
1860 | a426e122 | Jan Kiszka | } |
1861 | e22a25c9 | aliguori | } |
1862 | e22a25c9 | aliguori | |
1863 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1864 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1865 | a426e122 | Jan Kiszka | if (err) {
|
1866 | e22a25c9 | aliguori | return err;
|
1867 | a426e122 | Jan Kiszka | } |
1868 | e22a25c9 | aliguori | } |
1869 | e22a25c9 | aliguori | return 0; |
1870 | e22a25c9 | aliguori | } |
1871 | e22a25c9 | aliguori | |
1872 | 9349b4f9 | Andreas Färber | int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
|
1873 | e22a25c9 | aliguori | target_ulong len, int type)
|
1874 | e22a25c9 | aliguori | { |
1875 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1876 | 9349b4f9 | Andreas Färber | CPUArchState *env; |
1877 | e22a25c9 | aliguori | int err;
|
1878 | e22a25c9 | aliguori | |
1879 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1880 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1881 | a426e122 | Jan Kiszka | if (!bp) {
|
1882 | e22a25c9 | aliguori | return -ENOENT;
|
1883 | a426e122 | Jan Kiszka | } |
1884 | e22a25c9 | aliguori | |
1885 | e22a25c9 | aliguori | if (bp->use_count > 1) { |
1886 | e22a25c9 | aliguori | bp->use_count--; |
1887 | e22a25c9 | aliguori | return 0; |
1888 | e22a25c9 | aliguori | } |
1889 | e22a25c9 | aliguori | |
1890 | e22a25c9 | aliguori | err = kvm_arch_remove_sw_breakpoint(current_env, bp); |
1891 | a426e122 | Jan Kiszka | if (err) {
|
1892 | e22a25c9 | aliguori | return err;
|
1893 | a426e122 | Jan Kiszka | } |
1894 | e22a25c9 | aliguori | |
1895 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry); |
1896 | 7267c094 | Anthony Liguori | g_free(bp); |
1897 | e22a25c9 | aliguori | } else {
|
1898 | e22a25c9 | aliguori | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
1899 | a426e122 | Jan Kiszka | if (err) {
|
1900 | e22a25c9 | aliguori | return err;
|
1901 | a426e122 | Jan Kiszka | } |
1902 | e22a25c9 | aliguori | } |
1903 | e22a25c9 | aliguori | |
1904 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1905 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1906 | a426e122 | Jan Kiszka | if (err) {
|
1907 | e22a25c9 | aliguori | return err;
|
1908 | a426e122 | Jan Kiszka | } |
1909 | e22a25c9 | aliguori | } |
1910 | e22a25c9 | aliguori | return 0; |
1911 | e22a25c9 | aliguori | } |
1912 | e22a25c9 | aliguori | |
1913 | 9349b4f9 | Andreas Färber | void kvm_remove_all_breakpoints(CPUArchState *current_env)
|
1914 | e22a25c9 | aliguori | { |
1915 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp, *next;
|
1916 | e22a25c9 | aliguori | KVMState *s = current_env->kvm_state; |
1917 | 9349b4f9 | Andreas Färber | CPUArchState *env; |
1918 | e22a25c9 | aliguori | |
1919 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
1920 | e22a25c9 | aliguori | if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) { |
1921 | e22a25c9 | aliguori | /* Try harder to find a CPU that currently sees the breakpoint. */
|
1922 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1923 | a426e122 | Jan Kiszka | if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) { |
1924 | e22a25c9 | aliguori | break;
|
1925 | a426e122 | Jan Kiszka | } |
1926 | e22a25c9 | aliguori | } |
1927 | e22a25c9 | aliguori | } |
1928 | e22a25c9 | aliguori | } |
1929 | e22a25c9 | aliguori | kvm_arch_remove_all_hw_breakpoints(); |
1930 | e22a25c9 | aliguori | |
1931 | a426e122 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1932 | e22a25c9 | aliguori | kvm_update_guest_debug(env, 0);
|
1933 | a426e122 | Jan Kiszka | } |
1934 | e22a25c9 | aliguori | } |
1935 | e22a25c9 | aliguori | |
1936 | e22a25c9 | aliguori | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
1937 | e22a25c9 | aliguori | |
1938 | 9349b4f9 | Andreas Färber | int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap) |
1939 | e22a25c9 | aliguori | { |
1940 | e22a25c9 | aliguori | return -EINVAL;
|
1941 | e22a25c9 | aliguori | } |
1942 | e22a25c9 | aliguori | |
1943 | 9349b4f9 | Andreas Färber | int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
|
1944 | e22a25c9 | aliguori | target_ulong len, int type)
|
1945 | e22a25c9 | aliguori | { |
1946 | e22a25c9 | aliguori | return -EINVAL;
|
1947 | e22a25c9 | aliguori | } |
1948 | e22a25c9 | aliguori | |
1949 | 9349b4f9 | Andreas Färber | int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
|
1950 | e22a25c9 | aliguori | target_ulong len, int type)
|
1951 | e22a25c9 | aliguori | { |
1952 | e22a25c9 | aliguori | return -EINVAL;
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1953 | e22a25c9 | aliguori | } |
1954 | e22a25c9 | aliguori | |
1955 | 9349b4f9 | Andreas Färber | void kvm_remove_all_breakpoints(CPUArchState *current_env)
|
1956 | e22a25c9 | aliguori | { |
1957 | e22a25c9 | aliguori | } |
1958 | e22a25c9 | aliguori | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
1959 | cc84de95 | Marcelo Tosatti | |
1960 | 9349b4f9 | Andreas Färber | int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset) |
1961 | cc84de95 | Marcelo Tosatti | { |
1962 | cc84de95 | Marcelo Tosatti | struct kvm_signal_mask *sigmask;
|
1963 | cc84de95 | Marcelo Tosatti | int r;
|
1964 | cc84de95 | Marcelo Tosatti | |
1965 | a426e122 | Jan Kiszka | if (!sigset) {
|
1966 | cc84de95 | Marcelo Tosatti | return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL); |
1967 | a426e122 | Jan Kiszka | } |
1968 | cc84de95 | Marcelo Tosatti | |
1969 | 7267c094 | Anthony Liguori | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
1970 | cc84de95 | Marcelo Tosatti | |
1971 | cc84de95 | Marcelo Tosatti | sigmask->len = 8;
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1972 | cc84de95 | Marcelo Tosatti | memcpy(sigmask->sigset, sigset, sizeof(*sigset));
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1973 | cc84de95 | Marcelo Tosatti | r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask); |
1974 | 7267c094 | Anthony Liguori | g_free(sigmask); |
1975 | cc84de95 | Marcelo Tosatti | |
1976 | cc84de95 | Marcelo Tosatti | return r;
|
1977 | cc84de95 | Marcelo Tosatti | } |
1978 | ca821806 | Michael S. Tsirkin | |
1979 | 4b8f1c88 | Michael S. Tsirkin | int kvm_set_ioeventfd_mmio(int fd, uint32_t addr, uint32_t val, bool assign, |
1980 | 4b8f1c88 | Michael S. Tsirkin | uint32_t size) |
1981 | 44f1a3d8 | Cam Macdonell | { |
1982 | 44f1a3d8 | Cam Macdonell | int ret;
|
1983 | 44f1a3d8 | Cam Macdonell | struct kvm_ioeventfd iofd;
|
1984 | 44f1a3d8 | Cam Macdonell | |
1985 | 44f1a3d8 | Cam Macdonell | iofd.datamatch = val; |
1986 | 44f1a3d8 | Cam Macdonell | iofd.addr = addr; |
1987 | 4b8f1c88 | Michael S. Tsirkin | iofd.len = size; |
1988 | 44f1a3d8 | Cam Macdonell | iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH; |
1989 | 44f1a3d8 | Cam Macdonell | iofd.fd = fd; |
1990 | 44f1a3d8 | Cam Macdonell | |
1991 | 44f1a3d8 | Cam Macdonell | if (!kvm_enabled()) {
|
1992 | 44f1a3d8 | Cam Macdonell | return -ENOSYS;
|
1993 | 44f1a3d8 | Cam Macdonell | } |
1994 | 44f1a3d8 | Cam Macdonell | |
1995 | 44f1a3d8 | Cam Macdonell | if (!assign) {
|
1996 | 44f1a3d8 | Cam Macdonell | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
1997 | 44f1a3d8 | Cam Macdonell | } |
1998 | 44f1a3d8 | Cam Macdonell | |
1999 | 44f1a3d8 | Cam Macdonell | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
2000 | 44f1a3d8 | Cam Macdonell | |
2001 | 44f1a3d8 | Cam Macdonell | if (ret < 0) { |
2002 | 44f1a3d8 | Cam Macdonell | return -errno;
|
2003 | 44f1a3d8 | Cam Macdonell | } |
2004 | 44f1a3d8 | Cam Macdonell | |
2005 | 44f1a3d8 | Cam Macdonell | return 0; |
2006 | 44f1a3d8 | Cam Macdonell | } |
2007 | 44f1a3d8 | Cam Macdonell | |
2008 | ca821806 | Michael S. Tsirkin | int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) |
2009 | ca821806 | Michael S. Tsirkin | { |
2010 | ca821806 | Michael S. Tsirkin | struct kvm_ioeventfd kick = {
|
2011 | ca821806 | Michael S. Tsirkin | .datamatch = val, |
2012 | ca821806 | Michael S. Tsirkin | .addr = addr, |
2013 | ca821806 | Michael S. Tsirkin | .len = 2,
|
2014 | ca821806 | Michael S. Tsirkin | .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO, |
2015 | ca821806 | Michael S. Tsirkin | .fd = fd, |
2016 | ca821806 | Michael S. Tsirkin | }; |
2017 | ca821806 | Michael S. Tsirkin | int r;
|
2018 | a426e122 | Jan Kiszka | if (!kvm_enabled()) {
|
2019 | ca821806 | Michael S. Tsirkin | return -ENOSYS;
|
2020 | a426e122 | Jan Kiszka | } |
2021 | a426e122 | Jan Kiszka | if (!assign) {
|
2022 | ca821806 | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
2023 | a426e122 | Jan Kiszka | } |
2024 | ca821806 | Michael S. Tsirkin | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
2025 | a426e122 | Jan Kiszka | if (r < 0) { |
2026 | ca821806 | Michael S. Tsirkin | return r;
|
2027 | a426e122 | Jan Kiszka | } |
2028 | ca821806 | Michael S. Tsirkin | return 0; |
2029 | 98c8573e | Paolo Bonzini | } |
2030 | a1b87fe0 | Jan Kiszka | |
2031 | 9349b4f9 | Andreas Färber | int kvm_on_sigbus_vcpu(CPUArchState *env, int code, void *addr) |
2032 | a1b87fe0 | Jan Kiszka | { |
2033 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus_vcpu(env, code, addr);
|
2034 | a1b87fe0 | Jan Kiszka | } |
2035 | a1b87fe0 | Jan Kiszka | |
2036 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus(int code, void *addr) |
2037 | a1b87fe0 | Jan Kiszka | { |
2038 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus(code, addr);
|
2039 | a1b87fe0 | Jan Kiszka | } |