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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 | 05330448 | aliguori | #include "sysemu.h" |
26 | d33a1810 | Jan Kiszka | #include "hw/hw.h" |
27 | e22a25c9 | aliguori | #include "gdbstub.h" |
28 | 05330448 | aliguori | #include "kvm.h" |
29 | 8369e01c | Marcelo Tosatti | #include "bswap.h" |
30 | 05330448 | aliguori | |
31 | d2f2b8a7 | Stefan Hajnoczi | /* This check must be after config-host.h is included */
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32 | d2f2b8a7 | Stefan Hajnoczi | #ifdef CONFIG_EVENTFD
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33 | d2f2b8a7 | Stefan Hajnoczi | #include <sys/eventfd.h> |
34 | d2f2b8a7 | Stefan Hajnoczi | #endif
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35 | d2f2b8a7 | Stefan Hajnoczi | |
36 | f65ed4c1 | aliguori | /* KVM uses PAGE_SIZE in it's definition of COALESCED_MMIO_MAX */
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37 | f65ed4c1 | aliguori | #define PAGE_SIZE TARGET_PAGE_SIZE
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38 | f65ed4c1 | aliguori | |
39 | 05330448 | aliguori | //#define DEBUG_KVM
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40 | 05330448 | aliguori | |
41 | 05330448 | aliguori | #ifdef DEBUG_KVM
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42 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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43 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
44 | 05330448 | aliguori | #else
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45 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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46 | 05330448 | aliguori | do { } while (0) |
47 | 05330448 | aliguori | #endif
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48 | 05330448 | aliguori | |
49 | 34fc643f | aliguori | typedef struct KVMSlot |
50 | 34fc643f | aliguori | { |
51 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr; |
52 | c227f099 | Anthony Liguori | ram_addr_t memory_size; |
53 | c227f099 | Anthony Liguori | ram_addr_t phys_offset; |
54 | 34fc643f | aliguori | int slot;
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55 | 34fc643f | aliguori | int flags;
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56 | 34fc643f | aliguori | } KVMSlot; |
57 | 05330448 | aliguori | |
58 | 5832d1f2 | aliguori | typedef struct kvm_dirty_log KVMDirtyLog; |
59 | 5832d1f2 | aliguori | |
60 | 05330448 | aliguori | struct KVMState
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61 | 05330448 | aliguori | { |
62 | 05330448 | aliguori | KVMSlot slots[32];
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63 | 05330448 | aliguori | int fd;
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64 | 05330448 | aliguori | int vmfd;
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65 | f65ed4c1 | aliguori | int coalesced_mmio;
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66 | 62a2744c | Sheng Yang | #ifdef KVM_CAP_COALESCED_MMIO
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67 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
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68 | 62a2744c | Sheng Yang | #endif
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69 | e69917e2 | Jan Kiszka | int broken_set_mem_region;
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70 | 4495d6a7 | Jan Kiszka | int migration_log;
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71 | a0fb002c | Jan Kiszka | int vcpu_events;
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72 | b0b1d690 | Jan Kiszka | int robust_singlestep;
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73 | ff44f1a3 | Jan Kiszka | int debugregs;
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74 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
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75 | e22a25c9 | aliguori | struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
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76 | e22a25c9 | aliguori | #endif
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77 | 6f725c13 | Glauber Costa | int irqchip_in_kernel;
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78 | 6f725c13 | Glauber Costa | int pit_in_kernel;
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79 | f1665b21 | Sheng Yang | int xsave, xcrs;
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80 | d2f2b8a7 | Stefan Hajnoczi | int many_ioeventfds;
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81 | 05330448 | aliguori | }; |
82 | 05330448 | aliguori | |
83 | 05330448 | aliguori | static KVMState *kvm_state;
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84 | 05330448 | aliguori | |
85 | 05330448 | aliguori | static KVMSlot *kvm_alloc_slot(KVMState *s)
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86 | 05330448 | aliguori | { |
87 | 05330448 | aliguori | int i;
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88 | 05330448 | aliguori | |
89 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
90 | 62d60e8c | aliguori | /* KVM private memory slots */
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91 | a426e122 | Jan Kiszka | if (i >= 8 && i < 12) { |
92 | 62d60e8c | aliguori | continue;
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93 | a426e122 | Jan Kiszka | } |
94 | a426e122 | Jan Kiszka | if (s->slots[i].memory_size == 0) { |
95 | 05330448 | aliguori | return &s->slots[i];
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96 | a426e122 | Jan Kiszka | } |
97 | 05330448 | aliguori | } |
98 | 05330448 | aliguori | |
99 | d3f8d37f | aliguori | fprintf(stderr, "%s: no free slot available\n", __func__);
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100 | d3f8d37f | aliguori | abort(); |
101 | d3f8d37f | aliguori | } |
102 | d3f8d37f | aliguori | |
103 | d3f8d37f | aliguori | static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
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104 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
105 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
106 | d3f8d37f | aliguori | { |
107 | d3f8d37f | aliguori | int i;
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108 | d3f8d37f | aliguori | |
109 | d3f8d37f | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
110 | d3f8d37f | aliguori | KVMSlot *mem = &s->slots[i]; |
111 | d3f8d37f | aliguori | |
112 | d3f8d37f | aliguori | if (start_addr == mem->start_addr &&
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113 | d3f8d37f | aliguori | end_addr == mem->start_addr + mem->memory_size) { |
114 | d3f8d37f | aliguori | return mem;
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115 | d3f8d37f | aliguori | } |
116 | d3f8d37f | aliguori | } |
117 | d3f8d37f | aliguori | |
118 | 05330448 | aliguori | return NULL; |
119 | 05330448 | aliguori | } |
120 | 05330448 | aliguori | |
121 | 6152e2ae | aliguori | /*
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122 | 6152e2ae | aliguori | * Find overlapping slot with lowest start address
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123 | 6152e2ae | aliguori | */
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124 | 6152e2ae | aliguori | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
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125 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
126 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
127 | 05330448 | aliguori | { |
128 | 6152e2ae | aliguori | KVMSlot *found = NULL;
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129 | 05330448 | aliguori | int i;
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130 | 05330448 | aliguori | |
131 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
132 | 05330448 | aliguori | KVMSlot *mem = &s->slots[i]; |
133 | 05330448 | aliguori | |
134 | 6152e2ae | aliguori | if (mem->memory_size == 0 || |
135 | 6152e2ae | aliguori | (found && found->start_addr < mem->start_addr)) { |
136 | 6152e2ae | aliguori | continue;
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137 | 6152e2ae | aliguori | } |
138 | 6152e2ae | aliguori | |
139 | 6152e2ae | aliguori | if (end_addr > mem->start_addr &&
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140 | 6152e2ae | aliguori | start_addr < mem->start_addr + mem->memory_size) { |
141 | 6152e2ae | aliguori | found = mem; |
142 | 6152e2ae | aliguori | } |
143 | 05330448 | aliguori | } |
144 | 05330448 | aliguori | |
145 | 6152e2ae | aliguori | return found;
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146 | 05330448 | aliguori | } |
147 | 05330448 | aliguori | |
148 | 983dfc3b | Huang Ying | int kvm_physical_memory_addr_from_ram(KVMState *s, ram_addr_t ram_addr,
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149 | 983dfc3b | Huang Ying | target_phys_addr_t *phys_addr) |
150 | 983dfc3b | Huang Ying | { |
151 | 983dfc3b | Huang Ying | int i;
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152 | 983dfc3b | Huang Ying | |
153 | 983dfc3b | Huang Ying | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
154 | 983dfc3b | Huang Ying | KVMSlot *mem = &s->slots[i]; |
155 | 983dfc3b | Huang Ying | |
156 | 983dfc3b | Huang Ying | if (ram_addr >= mem->phys_offset &&
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157 | 983dfc3b | Huang Ying | ram_addr < mem->phys_offset + mem->memory_size) { |
158 | 983dfc3b | Huang Ying | *phys_addr = mem->start_addr + (ram_addr - mem->phys_offset); |
159 | 983dfc3b | Huang Ying | return 1; |
160 | 983dfc3b | Huang Ying | } |
161 | 983dfc3b | Huang Ying | } |
162 | 983dfc3b | Huang Ying | |
163 | 983dfc3b | Huang Ying | return 0; |
164 | 983dfc3b | Huang Ying | } |
165 | 983dfc3b | Huang Ying | |
166 | 5832d1f2 | aliguori | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
167 | 5832d1f2 | aliguori | { |
168 | 5832d1f2 | aliguori | struct kvm_userspace_memory_region mem;
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169 | 5832d1f2 | aliguori | |
170 | 5832d1f2 | aliguori | mem.slot = slot->slot; |
171 | 5832d1f2 | aliguori | mem.guest_phys_addr = slot->start_addr; |
172 | 5832d1f2 | aliguori | mem.memory_size = slot->memory_size; |
173 | b2e0a138 | Michael S. Tsirkin | mem.userspace_addr = (unsigned long)qemu_safe_ram_ptr(slot->phys_offset); |
174 | 5832d1f2 | aliguori | mem.flags = slot->flags; |
175 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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176 | 4495d6a7 | Jan Kiszka | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
177 | 4495d6a7 | Jan Kiszka | } |
178 | 5832d1f2 | aliguori | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
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179 | 5832d1f2 | aliguori | } |
180 | 5832d1f2 | aliguori | |
181 | 8d2ba1fb | Jan Kiszka | static void kvm_reset_vcpu(void *opaque) |
182 | 8d2ba1fb | Jan Kiszka | { |
183 | 8d2ba1fb | Jan Kiszka | CPUState *env = opaque; |
184 | 8d2ba1fb | Jan Kiszka | |
185 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
186 | 8d2ba1fb | Jan Kiszka | } |
187 | 5832d1f2 | aliguori | |
188 | 6f725c13 | Glauber Costa | int kvm_irqchip_in_kernel(void) |
189 | 6f725c13 | Glauber Costa | { |
190 | 6f725c13 | Glauber Costa | return kvm_state->irqchip_in_kernel;
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191 | 6f725c13 | Glauber Costa | } |
192 | 6f725c13 | Glauber Costa | |
193 | 6f725c13 | Glauber Costa | int kvm_pit_in_kernel(void) |
194 | 6f725c13 | Glauber Costa | { |
195 | 6f725c13 | Glauber Costa | return kvm_state->pit_in_kernel;
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196 | 6f725c13 | Glauber Costa | } |
197 | 6f725c13 | Glauber Costa | |
198 | 6f725c13 | Glauber Costa | |
199 | 05330448 | aliguori | int kvm_init_vcpu(CPUState *env)
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200 | 05330448 | aliguori | { |
201 | 05330448 | aliguori | KVMState *s = kvm_state; |
202 | 05330448 | aliguori | long mmap_size;
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203 | 05330448 | aliguori | int ret;
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204 | 05330448 | aliguori | |
205 | 8c0d577e | Blue Swirl | DPRINTF("kvm_init_vcpu\n");
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206 | 05330448 | aliguori | |
207 | 984b5181 | aliguori | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
208 | 05330448 | aliguori | if (ret < 0) { |
209 | 8c0d577e | Blue Swirl | DPRINTF("kvm_create_vcpu failed\n");
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210 | 05330448 | aliguori | goto err;
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211 | 05330448 | aliguori | } |
212 | 05330448 | aliguori | |
213 | 05330448 | aliguori | env->kvm_fd = ret; |
214 | 05330448 | aliguori | env->kvm_state = s; |
215 | 05330448 | aliguori | |
216 | 05330448 | aliguori | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
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217 | 05330448 | aliguori | if (mmap_size < 0) { |
218 | 8c0d577e | Blue Swirl | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
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219 | 05330448 | aliguori | goto err;
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220 | 05330448 | aliguori | } |
221 | 05330448 | aliguori | |
222 | 05330448 | aliguori | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
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223 | 05330448 | aliguori | env->kvm_fd, 0);
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224 | 05330448 | aliguori | if (env->kvm_run == MAP_FAILED) {
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225 | 05330448 | aliguori | ret = -errno; |
226 | 8c0d577e | Blue Swirl | DPRINTF("mmap'ing vcpu state failed\n");
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227 | 05330448 | aliguori | goto err;
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228 | 05330448 | aliguori | } |
229 | 05330448 | aliguori | |
230 | 62a2744c | Sheng Yang | #ifdef KVM_CAP_COALESCED_MMIO
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231 | a426e122 | Jan Kiszka | if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
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232 | a426e122 | Jan Kiszka | s->coalesced_mmio_ring = |
233 | a426e122 | Jan Kiszka | (void *)env->kvm_run + s->coalesced_mmio * PAGE_SIZE;
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234 | a426e122 | Jan Kiszka | } |
235 | 62a2744c | Sheng Yang | #endif
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236 | 62a2744c | Sheng Yang | |
237 | 05330448 | aliguori | ret = kvm_arch_init_vcpu(env); |
238 | 8d2ba1fb | Jan Kiszka | if (ret == 0) { |
239 | a08d4367 | Jan Kiszka | qemu_register_reset(kvm_reset_vcpu, env); |
240 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
241 | 8d2ba1fb | Jan Kiszka | } |
242 | 05330448 | aliguori | err:
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243 | 05330448 | aliguori | return ret;
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244 | 05330448 | aliguori | } |
245 | 05330448 | aliguori | |
246 | 5832d1f2 | aliguori | /*
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247 | 5832d1f2 | aliguori | * dirty pages logging control
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248 | 5832d1f2 | aliguori | */
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249 | c227f099 | Anthony Liguori | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
250 | c227f099 | Anthony Liguori | ram_addr_t size, int flags, int mask) |
251 | 5832d1f2 | aliguori | { |
252 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
253 | d3f8d37f | aliguori | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
254 | 4495d6a7 | Jan Kiszka | int old_flags;
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255 | 4495d6a7 | Jan Kiszka | |
256 | 5832d1f2 | aliguori | if (mem == NULL) { |
257 | d3f8d37f | aliguori | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
258 | d3f8d37f | aliguori | TARGET_FMT_plx "\n", __func__, phys_addr,
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259 | c227f099 | Anthony Liguori | (target_phys_addr_t)(phys_addr + size - 1));
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260 | 5832d1f2 | aliguori | return -EINVAL;
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261 | 5832d1f2 | aliguori | } |
262 | 5832d1f2 | aliguori | |
263 | 4495d6a7 | Jan Kiszka | old_flags = mem->flags; |
264 | 5832d1f2 | aliguori | |
265 | 4495d6a7 | Jan Kiszka | flags = (mem->flags & ~mask) | flags; |
266 | 5832d1f2 | aliguori | mem->flags = flags; |
267 | 5832d1f2 | aliguori | |
268 | 4495d6a7 | Jan Kiszka | /* If nothing changed effectively, no need to issue ioctl */
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269 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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270 | 4495d6a7 | Jan Kiszka | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
271 | 4495d6a7 | Jan Kiszka | } |
272 | 4495d6a7 | Jan Kiszka | if (flags == old_flags) {
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273 | 4495d6a7 | Jan Kiszka | return 0; |
274 | 4495d6a7 | Jan Kiszka | } |
275 | 4495d6a7 | Jan Kiszka | |
276 | 5832d1f2 | aliguori | return kvm_set_user_memory_region(s, mem);
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277 | 5832d1f2 | aliguori | } |
278 | 5832d1f2 | aliguori | |
279 | c227f099 | Anthony Liguori | int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size)
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280 | 5832d1f2 | aliguori | { |
281 | a426e122 | Jan Kiszka | return kvm_dirty_pages_log_change(phys_addr, size, KVM_MEM_LOG_DIRTY_PAGES,
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282 | a426e122 | Jan Kiszka | KVM_MEM_LOG_DIRTY_PAGES); |
283 | 5832d1f2 | aliguori | } |
284 | 5832d1f2 | aliguori | |
285 | c227f099 | Anthony Liguori | int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size)
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286 | 5832d1f2 | aliguori | { |
287 | a426e122 | Jan Kiszka | return kvm_dirty_pages_log_change(phys_addr, size, 0, |
288 | a426e122 | Jan Kiszka | KVM_MEM_LOG_DIRTY_PAGES); |
289 | 5832d1f2 | aliguori | } |
290 | 5832d1f2 | aliguori | |
291 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_set_migration_log(int enable) |
292 | 4495d6a7 | Jan Kiszka | { |
293 | 4495d6a7 | Jan Kiszka | KVMState *s = kvm_state; |
294 | 4495d6a7 | Jan Kiszka | KVMSlot *mem; |
295 | 4495d6a7 | Jan Kiszka | int i, err;
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296 | 4495d6a7 | Jan Kiszka | |
297 | 4495d6a7 | Jan Kiszka | s->migration_log = enable; |
298 | 4495d6a7 | Jan Kiszka | |
299 | 4495d6a7 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
300 | 4495d6a7 | Jan Kiszka | mem = &s->slots[i]; |
301 | 4495d6a7 | Jan Kiszka | |
302 | 70fedd76 | Alex Williamson | if (!mem->memory_size) {
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303 | 70fedd76 | Alex Williamson | continue;
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304 | 70fedd76 | Alex Williamson | } |
305 | 4495d6a7 | Jan Kiszka | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
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306 | 4495d6a7 | Jan Kiszka | continue;
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307 | 4495d6a7 | Jan Kiszka | } |
308 | 4495d6a7 | Jan Kiszka | err = kvm_set_user_memory_region(s, mem); |
309 | 4495d6a7 | Jan Kiszka | if (err) {
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310 | 4495d6a7 | Jan Kiszka | return err;
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311 | 4495d6a7 | Jan Kiszka | } |
312 | 4495d6a7 | Jan Kiszka | } |
313 | 4495d6a7 | Jan Kiszka | return 0; |
314 | 4495d6a7 | Jan Kiszka | } |
315 | 4495d6a7 | Jan Kiszka | |
316 | 8369e01c | Marcelo Tosatti | /* get kvm's dirty pages bitmap and update qemu's */
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317 | 8369e01c | Marcelo Tosatti | static int kvm_get_dirty_pages_log_range(unsigned long start_addr, |
318 | 8369e01c | Marcelo Tosatti | unsigned long *bitmap, |
319 | 8369e01c | Marcelo Tosatti | unsigned long offset, |
320 | 8369e01c | Marcelo Tosatti | unsigned long mem_size) |
321 | 96c1606b | Alexander Graf | { |
322 | 8369e01c | Marcelo Tosatti | unsigned int i, j; |
323 | 8369e01c | Marcelo Tosatti | unsigned long page_number, addr, addr1, c; |
324 | 8369e01c | Marcelo Tosatti | ram_addr_t ram_addr; |
325 | 8369e01c | Marcelo Tosatti | unsigned int len = ((mem_size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) / |
326 | 8369e01c | Marcelo Tosatti | HOST_LONG_BITS; |
327 | 8369e01c | Marcelo Tosatti | |
328 | 8369e01c | Marcelo Tosatti | /*
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329 | 8369e01c | Marcelo Tosatti | * bitmap-traveling is faster than memory-traveling (for addr...)
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330 | 8369e01c | Marcelo Tosatti | * especially when most of the memory is not dirty.
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331 | 8369e01c | Marcelo Tosatti | */
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332 | 8369e01c | Marcelo Tosatti | for (i = 0; i < len; i++) { |
333 | 8369e01c | Marcelo Tosatti | if (bitmap[i] != 0) { |
334 | 8369e01c | Marcelo Tosatti | c = leul_to_cpu(bitmap[i]); |
335 | 8369e01c | Marcelo Tosatti | do {
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336 | 8369e01c | Marcelo Tosatti | j = ffsl(c) - 1;
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337 | 8369e01c | Marcelo Tosatti | c &= ~(1ul << j);
|
338 | 8369e01c | Marcelo Tosatti | page_number = i * HOST_LONG_BITS + j; |
339 | 8369e01c | Marcelo Tosatti | addr1 = page_number * TARGET_PAGE_SIZE; |
340 | 8369e01c | Marcelo Tosatti | addr = offset + addr1; |
341 | 8369e01c | Marcelo Tosatti | ram_addr = cpu_get_physical_page_desc(addr); |
342 | 8369e01c | Marcelo Tosatti | cpu_physical_memory_set_dirty(ram_addr); |
343 | 8369e01c | Marcelo Tosatti | } while (c != 0); |
344 | 8369e01c | Marcelo Tosatti | } |
345 | 8369e01c | Marcelo Tosatti | } |
346 | 8369e01c | Marcelo Tosatti | return 0; |
347 | 96c1606b | Alexander Graf | } |
348 | 96c1606b | Alexander Graf | |
349 | 8369e01c | Marcelo Tosatti | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
350 | 8369e01c | Marcelo Tosatti | |
351 | 5832d1f2 | aliguori | /**
|
352 | 5832d1f2 | aliguori | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
|
353 | 5832d1f2 | aliguori | * This function updates qemu's dirty bitmap using cpu_physical_memory_set_dirty().
|
354 | 5832d1f2 | aliguori | * This means all bits are set to dirty.
|
355 | 5832d1f2 | aliguori | *
|
356 | d3f8d37f | aliguori | * @start_add: start of logged region.
|
357 | 5832d1f2 | aliguori | * @end_addr: end of logged region.
|
358 | 5832d1f2 | aliguori | */
|
359 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, |
360 | a426e122 | Jan Kiszka | target_phys_addr_t end_addr) |
361 | 5832d1f2 | aliguori | { |
362 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
363 | 151f7749 | Jan Kiszka | unsigned long size, allocated_size = 0; |
364 | 151f7749 | Jan Kiszka | KVMDirtyLog d; |
365 | 151f7749 | Jan Kiszka | KVMSlot *mem; |
366 | 151f7749 | Jan Kiszka | int ret = 0; |
367 | 5832d1f2 | aliguori | |
368 | 151f7749 | Jan Kiszka | d.dirty_bitmap = NULL;
|
369 | 151f7749 | Jan Kiszka | while (start_addr < end_addr) {
|
370 | 151f7749 | Jan Kiszka | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
371 | 151f7749 | Jan Kiszka | if (mem == NULL) { |
372 | 151f7749 | Jan Kiszka | break;
|
373 | 151f7749 | Jan Kiszka | } |
374 | 5832d1f2 | aliguori | |
375 | 8369e01c | Marcelo Tosatti | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), HOST_LONG_BITS) / 8;
|
376 | 151f7749 | Jan Kiszka | if (!d.dirty_bitmap) {
|
377 | 151f7749 | Jan Kiszka | d.dirty_bitmap = qemu_malloc(size); |
378 | 151f7749 | Jan Kiszka | } else if (size > allocated_size) { |
379 | 151f7749 | Jan Kiszka | d.dirty_bitmap = qemu_realloc(d.dirty_bitmap, size); |
380 | 151f7749 | Jan Kiszka | } |
381 | 151f7749 | Jan Kiszka | allocated_size = size; |
382 | 151f7749 | Jan Kiszka | memset(d.dirty_bitmap, 0, allocated_size);
|
383 | 5832d1f2 | aliguori | |
384 | 151f7749 | Jan Kiszka | d.slot = mem->slot; |
385 | 5832d1f2 | aliguori | |
386 | 6e489f3f | Anthony Liguori | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
387 | 8c0d577e | Blue Swirl | DPRINTF("ioctl failed %d\n", errno);
|
388 | 151f7749 | Jan Kiszka | ret = -1;
|
389 | 151f7749 | Jan Kiszka | break;
|
390 | 151f7749 | Jan Kiszka | } |
391 | 5832d1f2 | aliguori | |
392 | 8369e01c | Marcelo Tosatti | kvm_get_dirty_pages_log_range(mem->start_addr, d.dirty_bitmap, |
393 | 8369e01c | Marcelo Tosatti | mem->start_addr, mem->memory_size); |
394 | 8369e01c | Marcelo Tosatti | start_addr = mem->start_addr + mem->memory_size; |
395 | 5832d1f2 | aliguori | } |
396 | 5832d1f2 | aliguori | qemu_free(d.dirty_bitmap); |
397 | 151f7749 | Jan Kiszka | |
398 | 151f7749 | Jan Kiszka | return ret;
|
399 | 5832d1f2 | aliguori | } |
400 | 5832d1f2 | aliguori | |
401 | c227f099 | Anthony Liguori | int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
402 | f65ed4c1 | aliguori | { |
403 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
404 | f65ed4c1 | aliguori | #ifdef KVM_CAP_COALESCED_MMIO
|
405 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
406 | f65ed4c1 | aliguori | |
407 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
408 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
409 | f65ed4c1 | aliguori | |
410 | f65ed4c1 | aliguori | zone.addr = start; |
411 | f65ed4c1 | aliguori | zone.size = size; |
412 | f65ed4c1 | aliguori | |
413 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
414 | f65ed4c1 | aliguori | } |
415 | f65ed4c1 | aliguori | #endif
|
416 | f65ed4c1 | aliguori | |
417 | f65ed4c1 | aliguori | return ret;
|
418 | f65ed4c1 | aliguori | } |
419 | f65ed4c1 | aliguori | |
420 | c227f099 | Anthony Liguori | int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
421 | f65ed4c1 | aliguori | { |
422 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
423 | f65ed4c1 | aliguori | #ifdef KVM_CAP_COALESCED_MMIO
|
424 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
425 | f65ed4c1 | aliguori | |
426 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
427 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
428 | f65ed4c1 | aliguori | |
429 | f65ed4c1 | aliguori | zone.addr = start; |
430 | f65ed4c1 | aliguori | zone.size = size; |
431 | f65ed4c1 | aliguori | |
432 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
433 | f65ed4c1 | aliguori | } |
434 | f65ed4c1 | aliguori | #endif
|
435 | f65ed4c1 | aliguori | |
436 | f65ed4c1 | aliguori | return ret;
|
437 | f65ed4c1 | aliguori | } |
438 | f65ed4c1 | aliguori | |
439 | ad7b8b33 | Anthony Liguori | int kvm_check_extension(KVMState *s, unsigned int extension) |
440 | ad7b8b33 | Anthony Liguori | { |
441 | ad7b8b33 | Anthony Liguori | int ret;
|
442 | ad7b8b33 | Anthony Liguori | |
443 | ad7b8b33 | Anthony Liguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
444 | ad7b8b33 | Anthony Liguori | if (ret < 0) { |
445 | ad7b8b33 | Anthony Liguori | ret = 0;
|
446 | ad7b8b33 | Anthony Liguori | } |
447 | ad7b8b33 | Anthony Liguori | |
448 | ad7b8b33 | Anthony Liguori | return ret;
|
449 | ad7b8b33 | Anthony Liguori | } |
450 | ad7b8b33 | Anthony Liguori | |
451 | d2f2b8a7 | Stefan Hajnoczi | static int kvm_check_many_ioeventfds(void) |
452 | d2f2b8a7 | Stefan Hajnoczi | { |
453 | d2f2b8a7 | Stefan Hajnoczi | /* Older kernels have a 6 device limit on the KVM io bus. Find out so we
|
454 | d2f2b8a7 | Stefan Hajnoczi | * can avoid creating too many ioeventfds.
|
455 | d2f2b8a7 | Stefan Hajnoczi | */
|
456 | d2f2b8a7 | Stefan Hajnoczi | #ifdef CONFIG_EVENTFD
|
457 | d2f2b8a7 | Stefan Hajnoczi | int ioeventfds[7]; |
458 | d2f2b8a7 | Stefan Hajnoczi | int i, ret = 0; |
459 | d2f2b8a7 | Stefan Hajnoczi | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
460 | d2f2b8a7 | Stefan Hajnoczi | ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
|
461 | d2f2b8a7 | Stefan Hajnoczi | if (ioeventfds[i] < 0) { |
462 | d2f2b8a7 | Stefan Hajnoczi | break;
|
463 | d2f2b8a7 | Stefan Hajnoczi | } |
464 | d2f2b8a7 | Stefan Hajnoczi | ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true); |
465 | d2f2b8a7 | Stefan Hajnoczi | if (ret < 0) { |
466 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
467 | d2f2b8a7 | Stefan Hajnoczi | break;
|
468 | d2f2b8a7 | Stefan Hajnoczi | } |
469 | d2f2b8a7 | Stefan Hajnoczi | } |
470 | d2f2b8a7 | Stefan Hajnoczi | |
471 | d2f2b8a7 | Stefan Hajnoczi | /* Decide whether many devices are supported or not */
|
472 | d2f2b8a7 | Stefan Hajnoczi | ret = i == ARRAY_SIZE(ioeventfds); |
473 | d2f2b8a7 | Stefan Hajnoczi | |
474 | d2f2b8a7 | Stefan Hajnoczi | while (i-- > 0) { |
475 | d2f2b8a7 | Stefan Hajnoczi | kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false); |
476 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
477 | d2f2b8a7 | Stefan Hajnoczi | } |
478 | d2f2b8a7 | Stefan Hajnoczi | return ret;
|
479 | d2f2b8a7 | Stefan Hajnoczi | #else
|
480 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
481 | d2f2b8a7 | Stefan Hajnoczi | #endif
|
482 | d2f2b8a7 | Stefan Hajnoczi | } |
483 | d2f2b8a7 | Stefan Hajnoczi | |
484 | a426e122 | Jan Kiszka | static void kvm_set_phys_mem(target_phys_addr_t start_addr, ram_addr_t size, |
485 | a426e122 | Jan Kiszka | ram_addr_t phys_offset) |
486 | 46dbef6a | Michael S. Tsirkin | { |
487 | 46dbef6a | Michael S. Tsirkin | KVMState *s = kvm_state; |
488 | 46dbef6a | Michael S. Tsirkin | ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK; |
489 | 46dbef6a | Michael S. Tsirkin | KVMSlot *mem, old; |
490 | 46dbef6a | Michael S. Tsirkin | int err;
|
491 | 46dbef6a | Michael S. Tsirkin | |
492 | 14542fea | Gleb Natapov | /* kvm works in page size chunks, but the function may be called
|
493 | 14542fea | Gleb Natapov | with sub-page size and unaligned start address. */
|
494 | 14542fea | Gleb Natapov | size = TARGET_PAGE_ALIGN(size); |
495 | 14542fea | Gleb Natapov | start_addr = TARGET_PAGE_ALIGN(start_addr); |
496 | 46dbef6a | Michael S. Tsirkin | |
497 | 46dbef6a | Michael S. Tsirkin | /* KVM does not support read-only slots */
|
498 | 46dbef6a | Michael S. Tsirkin | phys_offset &= ~IO_MEM_ROM; |
499 | 46dbef6a | Michael S. Tsirkin | |
500 | 46dbef6a | Michael S. Tsirkin | while (1) { |
501 | 46dbef6a | Michael S. Tsirkin | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
502 | 46dbef6a | Michael S. Tsirkin | if (!mem) {
|
503 | 46dbef6a | Michael S. Tsirkin | break;
|
504 | 46dbef6a | Michael S. Tsirkin | } |
505 | 46dbef6a | Michael S. Tsirkin | |
506 | 46dbef6a | Michael S. Tsirkin | if (flags < IO_MEM_UNASSIGNED && start_addr >= mem->start_addr &&
|
507 | 46dbef6a | Michael S. Tsirkin | (start_addr + size <= mem->start_addr + mem->memory_size) && |
508 | 46dbef6a | Michael S. Tsirkin | (phys_offset - start_addr == mem->phys_offset - mem->start_addr)) { |
509 | 46dbef6a | Michael S. Tsirkin | /* The new slot fits into the existing one and comes with
|
510 | 46dbef6a | Michael S. Tsirkin | * identical parameters - nothing to be done. */
|
511 | 46dbef6a | Michael S. Tsirkin | return;
|
512 | 46dbef6a | Michael S. Tsirkin | } |
513 | 46dbef6a | Michael S. Tsirkin | |
514 | 46dbef6a | Michael S. Tsirkin | old = *mem; |
515 | 46dbef6a | Michael S. Tsirkin | |
516 | 46dbef6a | Michael S. Tsirkin | /* unregister the overlapping slot */
|
517 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = 0;
|
518 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
519 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
520 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
|
521 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
522 | 46dbef6a | Michael S. Tsirkin | abort(); |
523 | 46dbef6a | Michael S. Tsirkin | } |
524 | 46dbef6a | Michael S. Tsirkin | |
525 | 46dbef6a | Michael S. Tsirkin | /* Workaround for older KVM versions: we can't join slots, even not by
|
526 | 46dbef6a | Michael S. Tsirkin | * unregistering the previous ones and then registering the larger
|
527 | 46dbef6a | Michael S. Tsirkin | * slot. We have to maintain the existing fragmentation. Sigh.
|
528 | 46dbef6a | Michael S. Tsirkin | *
|
529 | 46dbef6a | Michael S. Tsirkin | * This workaround assumes that the new slot starts at the same
|
530 | 46dbef6a | Michael S. Tsirkin | * address as the first existing one. If not or if some overlapping
|
531 | 46dbef6a | Michael S. Tsirkin | * slot comes around later, we will fail (not seen in practice so far)
|
532 | 46dbef6a | Michael S. Tsirkin | * - and actually require a recent KVM version. */
|
533 | 46dbef6a | Michael S. Tsirkin | if (s->broken_set_mem_region &&
|
534 | 46dbef6a | Michael S. Tsirkin | old.start_addr == start_addr && old.memory_size < size && |
535 | 46dbef6a | Michael S. Tsirkin | flags < IO_MEM_UNASSIGNED) { |
536 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
537 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size; |
538 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
539 | 46dbef6a | Michael S. Tsirkin | mem->phys_offset = old.phys_offset; |
540 | 46dbef6a | Michael S. Tsirkin | mem->flags = 0;
|
541 | 46dbef6a | Michael S. Tsirkin | |
542 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
543 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
544 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error updating slot: %s\n", __func__,
|
545 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
546 | 46dbef6a | Michael S. Tsirkin | abort(); |
547 | 46dbef6a | Michael S. Tsirkin | } |
548 | 46dbef6a | Michael S. Tsirkin | |
549 | 46dbef6a | Michael S. Tsirkin | start_addr += old.memory_size; |
550 | 46dbef6a | Michael S. Tsirkin | phys_offset += old.memory_size; |
551 | 46dbef6a | Michael S. Tsirkin | size -= old.memory_size; |
552 | 46dbef6a | Michael S. Tsirkin | continue;
|
553 | 46dbef6a | Michael S. Tsirkin | } |
554 | 46dbef6a | Michael S. Tsirkin | |
555 | 46dbef6a | Michael S. Tsirkin | /* register prefix slot */
|
556 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr < start_addr) {
|
557 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
558 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = start_addr - old.start_addr; |
559 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
560 | 46dbef6a | Michael S. Tsirkin | mem->phys_offset = old.phys_offset; |
561 | 46dbef6a | Michael S. Tsirkin | mem->flags = 0;
|
562 | 46dbef6a | Michael S. Tsirkin | |
563 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
564 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
565 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering prefix slot: %s\n",
|
566 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
567 | 46dbef6a | Michael S. Tsirkin | abort(); |
568 | 46dbef6a | Michael S. Tsirkin | } |
569 | 46dbef6a | Michael S. Tsirkin | } |
570 | 46dbef6a | Michael S. Tsirkin | |
571 | 46dbef6a | Michael S. Tsirkin | /* register suffix slot */
|
572 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr + old.memory_size > start_addr + size) {
|
573 | 46dbef6a | Michael S. Tsirkin | ram_addr_t size_delta; |
574 | 46dbef6a | Michael S. Tsirkin | |
575 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
576 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr + size; |
577 | 46dbef6a | Michael S. Tsirkin | size_delta = mem->start_addr - old.start_addr; |
578 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size - size_delta; |
579 | 46dbef6a | Michael S. Tsirkin | mem->phys_offset = old.phys_offset + size_delta; |
580 | 46dbef6a | Michael S. Tsirkin | mem->flags = 0;
|
581 | 46dbef6a | Michael S. Tsirkin | |
582 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
583 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
584 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering suffix slot: %s\n",
|
585 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
586 | 46dbef6a | Michael S. Tsirkin | abort(); |
587 | 46dbef6a | Michael S. Tsirkin | } |
588 | 46dbef6a | Michael S. Tsirkin | } |
589 | 46dbef6a | Michael S. Tsirkin | } |
590 | 46dbef6a | Michael S. Tsirkin | |
591 | 46dbef6a | Michael S. Tsirkin | /* in case the KVM bug workaround already "consumed" the new slot */
|
592 | a426e122 | Jan Kiszka | if (!size) {
|
593 | 46dbef6a | Michael S. Tsirkin | return;
|
594 | a426e122 | Jan Kiszka | } |
595 | 46dbef6a | Michael S. Tsirkin | /* KVM does not need to know about this memory */
|
596 | a426e122 | Jan Kiszka | if (flags >= IO_MEM_UNASSIGNED) {
|
597 | 46dbef6a | Michael S. Tsirkin | return;
|
598 | a426e122 | Jan Kiszka | } |
599 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
600 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = size; |
601 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr; |
602 | 46dbef6a | Michael S. Tsirkin | mem->phys_offset = phys_offset; |
603 | 46dbef6a | Michael S. Tsirkin | mem->flags = 0;
|
604 | 46dbef6a | Michael S. Tsirkin | |
605 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
606 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
607 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering slot: %s\n", __func__,
|
608 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
609 | 46dbef6a | Michael S. Tsirkin | abort(); |
610 | 46dbef6a | Michael S. Tsirkin | } |
611 | 46dbef6a | Michael S. Tsirkin | } |
612 | 46dbef6a | Michael S. Tsirkin | |
613 | 7b8f3b78 | Michael S. Tsirkin | static void kvm_client_set_memory(struct CPUPhysMemoryClient *client, |
614 | a426e122 | Jan Kiszka | target_phys_addr_t start_addr, |
615 | a426e122 | Jan Kiszka | ram_addr_t size, ram_addr_t phys_offset) |
616 | 7b8f3b78 | Michael S. Tsirkin | { |
617 | a426e122 | Jan Kiszka | kvm_set_phys_mem(start_addr, size, phys_offset); |
618 | 7b8f3b78 | Michael S. Tsirkin | } |
619 | 7b8f3b78 | Michael S. Tsirkin | |
620 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_client_sync_dirty_bitmap(struct CPUPhysMemoryClient *client, |
621 | a426e122 | Jan Kiszka | target_phys_addr_t start_addr, |
622 | a426e122 | Jan Kiszka | target_phys_addr_t end_addr) |
623 | 7b8f3b78 | Michael S. Tsirkin | { |
624 | a426e122 | Jan Kiszka | return kvm_physical_sync_dirty_bitmap(start_addr, end_addr);
|
625 | 7b8f3b78 | Michael S. Tsirkin | } |
626 | 7b8f3b78 | Michael S. Tsirkin | |
627 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_client_migration_log(struct CPUPhysMemoryClient *client, |
628 | a426e122 | Jan Kiszka | int enable)
|
629 | 7b8f3b78 | Michael S. Tsirkin | { |
630 | a426e122 | Jan Kiszka | return kvm_set_migration_log(enable);
|
631 | 7b8f3b78 | Michael S. Tsirkin | } |
632 | 7b8f3b78 | Michael S. Tsirkin | |
633 | 7b8f3b78 | Michael S. Tsirkin | static CPUPhysMemoryClient kvm_cpu_phys_memory_client = {
|
634 | a426e122 | Jan Kiszka | .set_memory = kvm_client_set_memory, |
635 | a426e122 | Jan Kiszka | .sync_dirty_bitmap = kvm_client_sync_dirty_bitmap, |
636 | a426e122 | Jan Kiszka | .migration_log = kvm_client_migration_log, |
637 | 7b8f3b78 | Michael S. Tsirkin | }; |
638 | 7b8f3b78 | Michael S. Tsirkin | |
639 | 05330448 | aliguori | int kvm_init(int smp_cpus) |
640 | 05330448 | aliguori | { |
641 | 168ccc11 | Jan Kiszka | static const char upgrade_note[] = |
642 | 168ccc11 | Jan Kiszka | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
|
643 | 168ccc11 | Jan Kiszka | "(see http://sourceforge.net/projects/kvm).\n";
|
644 | 05330448 | aliguori | KVMState *s; |
645 | 05330448 | aliguori | int ret;
|
646 | 05330448 | aliguori | int i;
|
647 | 05330448 | aliguori | |
648 | 05330448 | aliguori | s = qemu_mallocz(sizeof(KVMState));
|
649 | 05330448 | aliguori | |
650 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
651 | 72cf2d4f | Blue Swirl | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
652 | e22a25c9 | aliguori | #endif
|
653 | a426e122 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
654 | 05330448 | aliguori | s->slots[i].slot = i; |
655 | a426e122 | Jan Kiszka | } |
656 | 05330448 | aliguori | s->vmfd = -1;
|
657 | 40ff6d7e | Kevin Wolf | s->fd = qemu_open("/dev/kvm", O_RDWR);
|
658 | 05330448 | aliguori | if (s->fd == -1) { |
659 | 05330448 | aliguori | fprintf(stderr, "Could not access KVM kernel module: %m\n");
|
660 | 05330448 | aliguori | ret = -errno; |
661 | 05330448 | aliguori | goto err;
|
662 | 05330448 | aliguori | } |
663 | 05330448 | aliguori | |
664 | 05330448 | aliguori | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
|
665 | 05330448 | aliguori | if (ret < KVM_API_VERSION) {
|
666 | a426e122 | Jan Kiszka | if (ret > 0) { |
667 | 05330448 | aliguori | ret = -EINVAL; |
668 | a426e122 | Jan Kiszka | } |
669 | 05330448 | aliguori | fprintf(stderr, "kvm version too old\n");
|
670 | 05330448 | aliguori | goto err;
|
671 | 05330448 | aliguori | } |
672 | 05330448 | aliguori | |
673 | 05330448 | aliguori | if (ret > KVM_API_VERSION) {
|
674 | 05330448 | aliguori | ret = -EINVAL; |
675 | 05330448 | aliguori | fprintf(stderr, "kvm version not supported\n");
|
676 | 05330448 | aliguori | goto err;
|
677 | 05330448 | aliguori | } |
678 | 05330448 | aliguori | |
679 | 05330448 | aliguori | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
|
680 | 0104dcac | Alexander Graf | if (s->vmfd < 0) { |
681 | 0104dcac | Alexander Graf | #ifdef TARGET_S390X
|
682 | 0104dcac | Alexander Graf | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
|
683 | 0104dcac | Alexander Graf | "your host kernel command line\n");
|
684 | 0104dcac | Alexander Graf | #endif
|
685 | 05330448 | aliguori | goto err;
|
686 | 0104dcac | Alexander Graf | } |
687 | 05330448 | aliguori | |
688 | 05330448 | aliguori | /* initially, KVM allocated its own memory and we had to jump through
|
689 | 05330448 | aliguori | * hooks to make phys_ram_base point to this. Modern versions of KVM
|
690 | 5579c7f3 | pbrook | * just use a user allocated buffer so we can use regular pages
|
691 | 05330448 | aliguori | * unmodified. Make sure we have a sufficiently modern version of KVM.
|
692 | 05330448 | aliguori | */
|
693 | ad7b8b33 | Anthony Liguori | if (!kvm_check_extension(s, KVM_CAP_USER_MEMORY)) {
|
694 | ad7b8b33 | Anthony Liguori | ret = -EINVAL; |
695 | 168ccc11 | Jan Kiszka | fprintf(stderr, "kvm does not support KVM_CAP_USER_MEMORY\n%s",
|
696 | 168ccc11 | Jan Kiszka | upgrade_note); |
697 | 05330448 | aliguori | goto err;
|
698 | 05330448 | aliguori | } |
699 | 05330448 | aliguori | |
700 | d85dc283 | aliguori | /* There was a nasty bug in < kvm-80 that prevents memory slots from being
|
701 | d85dc283 | aliguori | * destroyed properly. Since we rely on this capability, refuse to work
|
702 | d85dc283 | aliguori | * with any kernel without this capability. */
|
703 | ad7b8b33 | Anthony Liguori | if (!kvm_check_extension(s, KVM_CAP_DESTROY_MEMORY_REGION_WORKS)) {
|
704 | ad7b8b33 | Anthony Liguori | ret = -EINVAL; |
705 | d85dc283 | aliguori | |
706 | d85dc283 | aliguori | fprintf(stderr, |
707 | 168ccc11 | Jan Kiszka | "KVM kernel module broken (DESTROY_MEMORY_REGION).\n%s",
|
708 | 168ccc11 | Jan Kiszka | upgrade_note); |
709 | d85dc283 | aliguori | goto err;
|
710 | d85dc283 | aliguori | } |
711 | d85dc283 | aliguori | |
712 | 62a2744c | Sheng Yang | s->coalesced_mmio = 0;
|
713 | f65ed4c1 | aliguori | #ifdef KVM_CAP_COALESCED_MMIO
|
714 | ad7b8b33 | Anthony Liguori | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
715 | 62a2744c | Sheng Yang | s->coalesced_mmio_ring = NULL;
|
716 | f65ed4c1 | aliguori | #endif
|
717 | f65ed4c1 | aliguori | |
718 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 1;
|
719 | e69917e2 | Jan Kiszka | #ifdef KVM_CAP_JOIN_MEMORY_REGIONS_WORKS
|
720 | 14a09518 | Lai Jiangshan | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
721 | e69917e2 | Jan Kiszka | if (ret > 0) { |
722 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 0;
|
723 | e69917e2 | Jan Kiszka | } |
724 | e69917e2 | Jan Kiszka | #endif
|
725 | e69917e2 | Jan Kiszka | |
726 | a0fb002c | Jan Kiszka | s->vcpu_events = 0;
|
727 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
728 | a0fb002c | Jan Kiszka | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
729 | a0fb002c | Jan Kiszka | #endif
|
730 | a0fb002c | Jan Kiszka | |
731 | b0b1d690 | Jan Kiszka | s->robust_singlestep = 0;
|
732 | b0b1d690 | Jan Kiszka | #ifdef KVM_CAP_X86_ROBUST_SINGLESTEP
|
733 | b0b1d690 | Jan Kiszka | s->robust_singlestep = |
734 | b0b1d690 | Jan Kiszka | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
735 | b0b1d690 | Jan Kiszka | #endif
|
736 | b0b1d690 | Jan Kiszka | |
737 | ff44f1a3 | Jan Kiszka | s->debugregs = 0;
|
738 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
739 | ff44f1a3 | Jan Kiszka | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
740 | ff44f1a3 | Jan Kiszka | #endif
|
741 | ff44f1a3 | Jan Kiszka | |
742 | f1665b21 | Sheng Yang | s->xsave = 0;
|
743 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
744 | f1665b21 | Sheng Yang | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
745 | f1665b21 | Sheng Yang | #endif
|
746 | f1665b21 | Sheng Yang | |
747 | f1665b21 | Sheng Yang | s->xcrs = 0;
|
748 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
749 | f1665b21 | Sheng Yang | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
750 | f1665b21 | Sheng Yang | #endif
|
751 | f1665b21 | Sheng Yang | |
752 | 05330448 | aliguori | ret = kvm_arch_init(s, smp_cpus); |
753 | a426e122 | Jan Kiszka | if (ret < 0) { |
754 | 05330448 | aliguori | goto err;
|
755 | a426e122 | Jan Kiszka | } |
756 | 05330448 | aliguori | |
757 | 05330448 | aliguori | kvm_state = s; |
758 | 7b8f3b78 | Michael S. Tsirkin | cpu_register_phys_memory_client(&kvm_cpu_phys_memory_client); |
759 | 05330448 | aliguori | |
760 | d2f2b8a7 | Stefan Hajnoczi | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
761 | d2f2b8a7 | Stefan Hajnoczi | |
762 | 05330448 | aliguori | return 0; |
763 | 05330448 | aliguori | |
764 | 05330448 | aliguori | err:
|
765 | 05330448 | aliguori | if (s) {
|
766 | a426e122 | Jan Kiszka | if (s->vmfd != -1) { |
767 | 05330448 | aliguori | close(s->vmfd); |
768 | a426e122 | Jan Kiszka | } |
769 | a426e122 | Jan Kiszka | if (s->fd != -1) { |
770 | 05330448 | aliguori | close(s->fd); |
771 | a426e122 | Jan Kiszka | } |
772 | 05330448 | aliguori | } |
773 | 05330448 | aliguori | qemu_free(s); |
774 | 05330448 | aliguori | |
775 | 05330448 | aliguori | return ret;
|
776 | 05330448 | aliguori | } |
777 | 05330448 | aliguori | |
778 | afcea8cb | Blue Swirl | static int kvm_handle_io(uint16_t port, void *data, int direction, int size, |
779 | afcea8cb | Blue Swirl | uint32_t count) |
780 | 05330448 | aliguori | { |
781 | 05330448 | aliguori | int i;
|
782 | 05330448 | aliguori | uint8_t *ptr = data; |
783 | 05330448 | aliguori | |
784 | 05330448 | aliguori | for (i = 0; i < count; i++) { |
785 | 05330448 | aliguori | if (direction == KVM_EXIT_IO_IN) {
|
786 | 05330448 | aliguori | switch (size) {
|
787 | 05330448 | aliguori | case 1: |
788 | afcea8cb | Blue Swirl | stb_p(ptr, cpu_inb(port)); |
789 | 05330448 | aliguori | break;
|
790 | 05330448 | aliguori | case 2: |
791 | afcea8cb | Blue Swirl | stw_p(ptr, cpu_inw(port)); |
792 | 05330448 | aliguori | break;
|
793 | 05330448 | aliguori | case 4: |
794 | afcea8cb | Blue Swirl | stl_p(ptr, cpu_inl(port)); |
795 | 05330448 | aliguori | break;
|
796 | 05330448 | aliguori | } |
797 | 05330448 | aliguori | } else {
|
798 | 05330448 | aliguori | switch (size) {
|
799 | 05330448 | aliguori | case 1: |
800 | afcea8cb | Blue Swirl | cpu_outb(port, ldub_p(ptr)); |
801 | 05330448 | aliguori | break;
|
802 | 05330448 | aliguori | case 2: |
803 | afcea8cb | Blue Swirl | cpu_outw(port, lduw_p(ptr)); |
804 | 05330448 | aliguori | break;
|
805 | 05330448 | aliguori | case 4: |
806 | afcea8cb | Blue Swirl | cpu_outl(port, ldl_p(ptr)); |
807 | 05330448 | aliguori | break;
|
808 | 05330448 | aliguori | } |
809 | 05330448 | aliguori | } |
810 | 05330448 | aliguori | |
811 | 05330448 | aliguori | ptr += size; |
812 | 05330448 | aliguori | } |
813 | 05330448 | aliguori | |
814 | 05330448 | aliguori | return 1; |
815 | 05330448 | aliguori | } |
816 | 05330448 | aliguori | |
817 | 7c80eef8 | Marcelo Tosatti | #ifdef KVM_CAP_INTERNAL_ERROR_DATA
|
818 | 73aaec4a | Jan Kiszka | static int kvm_handle_internal_error(CPUState *env, struct kvm_run *run) |
819 | 7c80eef8 | Marcelo Tosatti | { |
820 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM internal error.");
|
821 | 7c80eef8 | Marcelo Tosatti | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
|
822 | 7c80eef8 | Marcelo Tosatti | int i;
|
823 | 7c80eef8 | Marcelo Tosatti | |
824 | bb44e0d1 | Jan Kiszka | fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
|
825 | 7c80eef8 | Marcelo Tosatti | for (i = 0; i < run->internal.ndata; ++i) { |
826 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
827 | 7c80eef8 | Marcelo Tosatti | i, (uint64_t)run->internal.data[i]); |
828 | 7c80eef8 | Marcelo Tosatti | } |
829 | bb44e0d1 | Jan Kiszka | } else {
|
830 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "\n");
|
831 | 7c80eef8 | Marcelo Tosatti | } |
832 | 7c80eef8 | Marcelo Tosatti | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
|
833 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "emulation failure\n");
|
834 | a426e122 | Jan Kiszka | if (!kvm_arch_stop_on_emulation_error(env)) {
|
835 | bb44e0d1 | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, 0);
|
836 | 73aaec4a | Jan Kiszka | return 0; |
837 | a426e122 | Jan Kiszka | } |
838 | 7c80eef8 | Marcelo Tosatti | } |
839 | 7c80eef8 | Marcelo Tosatti | /* FIXME: Should trigger a qmp message to let management know
|
840 | 7c80eef8 | Marcelo Tosatti | * something went wrong.
|
841 | 7c80eef8 | Marcelo Tosatti | */
|
842 | 73aaec4a | Jan Kiszka | return -1; |
843 | 7c80eef8 | Marcelo Tosatti | } |
844 | 7c80eef8 | Marcelo Tosatti | #endif
|
845 | 7c80eef8 | Marcelo Tosatti | |
846 | 62a2744c | Sheng Yang | void kvm_flush_coalesced_mmio_buffer(void) |
847 | f65ed4c1 | aliguori | { |
848 | f65ed4c1 | aliguori | #ifdef KVM_CAP_COALESCED_MMIO
|
849 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
850 | 62a2744c | Sheng Yang | if (s->coalesced_mmio_ring) {
|
851 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
|
852 | f65ed4c1 | aliguori | while (ring->first != ring->last) {
|
853 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio *ent;
|
854 | f65ed4c1 | aliguori | |
855 | f65ed4c1 | aliguori | ent = &ring->coalesced_mmio[ring->first]; |
856 | f65ed4c1 | aliguori | |
857 | f65ed4c1 | aliguori | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
858 | 85199474 | Marcelo Tosatti | smp_wmb(); |
859 | f65ed4c1 | aliguori | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
|
860 | f65ed4c1 | aliguori | } |
861 | f65ed4c1 | aliguori | } |
862 | f65ed4c1 | aliguori | #endif
|
863 | f65ed4c1 | aliguori | } |
864 | f65ed4c1 | aliguori | |
865 | 2705d56a | Jan Kiszka | static void do_kvm_cpu_synchronize_state(void *_env) |
866 | 4c0960c0 | Avi Kivity | { |
867 | 2705d56a | Jan Kiszka | CPUState *env = _env; |
868 | 2705d56a | Jan Kiszka | |
869 | 9ded2744 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
870 | 4c0960c0 | Avi Kivity | kvm_arch_get_registers(env); |
871 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 1;
|
872 | 4c0960c0 | Avi Kivity | } |
873 | 4c0960c0 | Avi Kivity | } |
874 | 4c0960c0 | Avi Kivity | |
875 | 2705d56a | Jan Kiszka | void kvm_cpu_synchronize_state(CPUState *env)
|
876 | 2705d56a | Jan Kiszka | { |
877 | a426e122 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
878 | 2705d56a | Jan Kiszka | run_on_cpu(env, do_kvm_cpu_synchronize_state, env); |
879 | a426e122 | Jan Kiszka | } |
880 | 2705d56a | Jan Kiszka | } |
881 | 2705d56a | Jan Kiszka | |
882 | ea375f9a | Jan Kiszka | void kvm_cpu_synchronize_post_reset(CPUState *env)
|
883 | ea375f9a | Jan Kiszka | { |
884 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RESET_STATE); |
885 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
886 | ea375f9a | Jan Kiszka | } |
887 | ea375f9a | Jan Kiszka | |
888 | ea375f9a | Jan Kiszka | void kvm_cpu_synchronize_post_init(CPUState *env)
|
889 | ea375f9a | Jan Kiszka | { |
890 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_FULL_STATE); |
891 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
892 | ea375f9a | Jan Kiszka | } |
893 | ea375f9a | Jan Kiszka | |
894 | 05330448 | aliguori | int kvm_cpu_exec(CPUState *env)
|
895 | 05330448 | aliguori | { |
896 | 05330448 | aliguori | struct kvm_run *run = env->kvm_run;
|
897 | 05330448 | aliguori | int ret;
|
898 | 05330448 | aliguori | |
899 | 8c0d577e | Blue Swirl | DPRINTF("kvm_cpu_exec()\n");
|
900 | 05330448 | aliguori | |
901 | 05330448 | aliguori | do {
|
902 | 6312b928 | Marcelo Tosatti | #ifndef CONFIG_IOTHREAD
|
903 | be214e6c | aurel32 | if (env->exit_request) {
|
904 | 8c0d577e | Blue Swirl | DPRINTF("interrupt exit requested\n");
|
905 | 05330448 | aliguori | ret = 0;
|
906 | 05330448 | aliguori | break;
|
907 | 05330448 | aliguori | } |
908 | 6312b928 | Marcelo Tosatti | #endif
|
909 | 05330448 | aliguori | |
910 | 0af691d7 | Marcelo Tosatti | if (kvm_arch_process_irqchip_events(env)) {
|
911 | 0af691d7 | Marcelo Tosatti | ret = 0;
|
912 | 0af691d7 | Marcelo Tosatti | break;
|
913 | 0af691d7 | Marcelo Tosatti | } |
914 | 0af691d7 | Marcelo Tosatti | |
915 | 9ded2744 | Jan Kiszka | if (env->kvm_vcpu_dirty) {
|
916 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); |
917 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
918 | 4c0960c0 | Avi Kivity | } |
919 | 4c0960c0 | Avi Kivity | |
920 | 8c14c173 | Jan Kiszka | kvm_arch_pre_run(env, run); |
921 | 273faf1b | Marcelo Tosatti | cpu_single_env = NULL;
|
922 | d549db5a | Glauber Costa | qemu_mutex_unlock_iothread(); |
923 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
|
924 | d549db5a | Glauber Costa | qemu_mutex_lock_iothread(); |
925 | 273faf1b | Marcelo Tosatti | cpu_single_env = env; |
926 | 05330448 | aliguori | kvm_arch_post_run(env, run); |
927 | 05330448 | aliguori | |
928 | 05330448 | aliguori | if (ret == -EINTR || ret == -EAGAIN) {
|
929 | cc84de95 | Marcelo Tosatti | cpu_exit(env); |
930 | 8c0d577e | Blue Swirl | DPRINTF("io window exit\n");
|
931 | 05330448 | aliguori | ret = 0;
|
932 | 05330448 | aliguori | break;
|
933 | 05330448 | aliguori | } |
934 | 05330448 | aliguori | |
935 | 05330448 | aliguori | if (ret < 0) { |
936 | 8c0d577e | Blue Swirl | DPRINTF("kvm run failed %s\n", strerror(-ret));
|
937 | 05330448 | aliguori | abort(); |
938 | 05330448 | aliguori | } |
939 | 05330448 | aliguori | |
940 | 62a2744c | Sheng Yang | kvm_flush_coalesced_mmio_buffer(); |
941 | f65ed4c1 | aliguori | |
942 | 05330448 | aliguori | ret = 0; /* exit loop */ |
943 | 05330448 | aliguori | switch (run->exit_reason) {
|
944 | 05330448 | aliguori | case KVM_EXIT_IO:
|
945 | 8c0d577e | Blue Swirl | DPRINTF("handle_io\n");
|
946 | afcea8cb | Blue Swirl | ret = kvm_handle_io(run->io.port, |
947 | 05330448 | aliguori | (uint8_t *)run + run->io.data_offset, |
948 | 05330448 | aliguori | run->io.direction, |
949 | 05330448 | aliguori | run->io.size, |
950 | 05330448 | aliguori | run->io.count); |
951 | 05330448 | aliguori | break;
|
952 | 05330448 | aliguori | case KVM_EXIT_MMIO:
|
953 | 8c0d577e | Blue Swirl | DPRINTF("handle_mmio\n");
|
954 | 05330448 | aliguori | cpu_physical_memory_rw(run->mmio.phys_addr, |
955 | 05330448 | aliguori | run->mmio.data, |
956 | 05330448 | aliguori | run->mmio.len, |
957 | 05330448 | aliguori | run->mmio.is_write); |
958 | 05330448 | aliguori | ret = 1;
|
959 | 05330448 | aliguori | break;
|
960 | 05330448 | aliguori | case KVM_EXIT_IRQ_WINDOW_OPEN:
|
961 | 8c0d577e | Blue Swirl | DPRINTF("irq_window_open\n");
|
962 | 05330448 | aliguori | break;
|
963 | 05330448 | aliguori | case KVM_EXIT_SHUTDOWN:
|
964 | 8c0d577e | Blue Swirl | DPRINTF("shutdown\n");
|
965 | 05330448 | aliguori | qemu_system_reset_request(); |
966 | 05330448 | aliguori | ret = 1;
|
967 | 05330448 | aliguori | break;
|
968 | 05330448 | aliguori | case KVM_EXIT_UNKNOWN:
|
969 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
970 | bb44e0d1 | Jan Kiszka | (uint64_t)run->hw.hardware_exit_reason); |
971 | 73aaec4a | Jan Kiszka | ret = -1;
|
972 | 05330448 | aliguori | break;
|
973 | 7c80eef8 | Marcelo Tosatti | #ifdef KVM_CAP_INTERNAL_ERROR_DATA
|
974 | 7c80eef8 | Marcelo Tosatti | case KVM_EXIT_INTERNAL_ERROR:
|
975 | 73aaec4a | Jan Kiszka | ret = kvm_handle_internal_error(env, run); |
976 | 7c80eef8 | Marcelo Tosatti | break;
|
977 | 7c80eef8 | Marcelo Tosatti | #endif
|
978 | 05330448 | aliguori | case KVM_EXIT_DEBUG:
|
979 | 8c0d577e | Blue Swirl | DPRINTF("kvm_exit_debug\n");
|
980 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
981 | e22a25c9 | aliguori | if (kvm_arch_debug(&run->debug.arch)) {
|
982 | e22a25c9 | aliguori | env->exception_index = EXCP_DEBUG; |
983 | e22a25c9 | aliguori | return 0; |
984 | e22a25c9 | aliguori | } |
985 | e22a25c9 | aliguori | /* re-enter, this exception was guest-internal */
|
986 | e22a25c9 | aliguori | ret = 1;
|
987 | e22a25c9 | aliguori | #endif /* KVM_CAP_SET_GUEST_DEBUG */ |
988 | 05330448 | aliguori | break;
|
989 | 05330448 | aliguori | default:
|
990 | 8c0d577e | Blue Swirl | DPRINTF("kvm_arch_handle_exit\n");
|
991 | 05330448 | aliguori | ret = kvm_arch_handle_exit(env, run); |
992 | 05330448 | aliguori | break;
|
993 | 05330448 | aliguori | } |
994 | 05330448 | aliguori | } while (ret > 0); |
995 | 05330448 | aliguori | |
996 | 73aaec4a | Jan Kiszka | if (ret < 0) { |
997 | bb44e0d1 | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, 0);
|
998 | 73aaec4a | Jan Kiszka | vm_stop(0);
|
999 | 73aaec4a | Jan Kiszka | env->exit_request = 1;
|
1000 | 73aaec4a | Jan Kiszka | } |
1001 | be214e6c | aurel32 | if (env->exit_request) {
|
1002 | be214e6c | aurel32 | env->exit_request = 0;
|
1003 | becfc390 | aliguori | env->exception_index = EXCP_INTERRUPT; |
1004 | becfc390 | aliguori | } |
1005 | becfc390 | aliguori | |
1006 | 05330448 | aliguori | return ret;
|
1007 | 05330448 | aliguori | } |
1008 | 05330448 | aliguori | |
1009 | 984b5181 | aliguori | int kvm_ioctl(KVMState *s, int type, ...) |
1010 | 05330448 | aliguori | { |
1011 | 05330448 | aliguori | int ret;
|
1012 | 984b5181 | aliguori | void *arg;
|
1013 | 984b5181 | aliguori | va_list ap; |
1014 | 05330448 | aliguori | |
1015 | 984b5181 | aliguori | va_start(ap, type); |
1016 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1017 | 984b5181 | aliguori | va_end(ap); |
1018 | 984b5181 | aliguori | |
1019 | 984b5181 | aliguori | ret = ioctl(s->fd, type, arg); |
1020 | a426e122 | Jan Kiszka | if (ret == -1) { |
1021 | 05330448 | aliguori | ret = -errno; |
1022 | a426e122 | Jan Kiszka | } |
1023 | 05330448 | aliguori | return ret;
|
1024 | 05330448 | aliguori | } |
1025 | 05330448 | aliguori | |
1026 | 984b5181 | aliguori | int kvm_vm_ioctl(KVMState *s, int type, ...) |
1027 | 05330448 | aliguori | { |
1028 | 05330448 | aliguori | int ret;
|
1029 | 984b5181 | aliguori | void *arg;
|
1030 | 984b5181 | aliguori | va_list ap; |
1031 | 984b5181 | aliguori | |
1032 | 984b5181 | aliguori | va_start(ap, type); |
1033 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1034 | 984b5181 | aliguori | va_end(ap); |
1035 | 05330448 | aliguori | |
1036 | 984b5181 | aliguori | ret = ioctl(s->vmfd, type, arg); |
1037 | a426e122 | Jan Kiszka | if (ret == -1) { |
1038 | 05330448 | aliguori | ret = -errno; |
1039 | a426e122 | Jan Kiszka | } |
1040 | 05330448 | aliguori | return ret;
|
1041 | 05330448 | aliguori | } |
1042 | 05330448 | aliguori | |
1043 | 984b5181 | aliguori | int kvm_vcpu_ioctl(CPUState *env, int type, ...) |
1044 | 05330448 | aliguori | { |
1045 | 05330448 | aliguori | int ret;
|
1046 | 984b5181 | aliguori | void *arg;
|
1047 | 984b5181 | aliguori | va_list ap; |
1048 | 984b5181 | aliguori | |
1049 | 984b5181 | aliguori | va_start(ap, type); |
1050 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1051 | 984b5181 | aliguori | va_end(ap); |
1052 | 05330448 | aliguori | |
1053 | 984b5181 | aliguori | ret = ioctl(env->kvm_fd, type, arg); |
1054 | a426e122 | Jan Kiszka | if (ret == -1) { |
1055 | 05330448 | aliguori | ret = -errno; |
1056 | a426e122 | Jan Kiszka | } |
1057 | 05330448 | aliguori | return ret;
|
1058 | 05330448 | aliguori | } |
1059 | bd322087 | aliguori | |
1060 | bd322087 | aliguori | int kvm_has_sync_mmu(void) |
1061 | bd322087 | aliguori | { |
1062 | a9c11522 | aurel32 | #ifdef KVM_CAP_SYNC_MMU
|
1063 | bd322087 | aliguori | KVMState *s = kvm_state; |
1064 | bd322087 | aliguori | |
1065 | ad7b8b33 | Anthony Liguori | return kvm_check_extension(s, KVM_CAP_SYNC_MMU);
|
1066 | ad7b8b33 | Anthony Liguori | #else
|
1067 | bd322087 | aliguori | return 0; |
1068 | ad7b8b33 | Anthony Liguori | #endif
|
1069 | bd322087 | aliguori | } |
1070 | e22a25c9 | aliguori | |
1071 | a0fb002c | Jan Kiszka | int kvm_has_vcpu_events(void) |
1072 | a0fb002c | Jan Kiszka | { |
1073 | a0fb002c | Jan Kiszka | return kvm_state->vcpu_events;
|
1074 | a0fb002c | Jan Kiszka | } |
1075 | a0fb002c | Jan Kiszka | |
1076 | b0b1d690 | Jan Kiszka | int kvm_has_robust_singlestep(void) |
1077 | b0b1d690 | Jan Kiszka | { |
1078 | b0b1d690 | Jan Kiszka | return kvm_state->robust_singlestep;
|
1079 | b0b1d690 | Jan Kiszka | } |
1080 | b0b1d690 | Jan Kiszka | |
1081 | ff44f1a3 | Jan Kiszka | int kvm_has_debugregs(void) |
1082 | ff44f1a3 | Jan Kiszka | { |
1083 | ff44f1a3 | Jan Kiszka | return kvm_state->debugregs;
|
1084 | ff44f1a3 | Jan Kiszka | } |
1085 | ff44f1a3 | Jan Kiszka | |
1086 | f1665b21 | Sheng Yang | int kvm_has_xsave(void) |
1087 | f1665b21 | Sheng Yang | { |
1088 | f1665b21 | Sheng Yang | return kvm_state->xsave;
|
1089 | f1665b21 | Sheng Yang | } |
1090 | f1665b21 | Sheng Yang | |
1091 | f1665b21 | Sheng Yang | int kvm_has_xcrs(void) |
1092 | f1665b21 | Sheng Yang | { |
1093 | f1665b21 | Sheng Yang | return kvm_state->xcrs;
|
1094 | f1665b21 | Sheng Yang | } |
1095 | f1665b21 | Sheng Yang | |
1096 | d2f2b8a7 | Stefan Hajnoczi | int kvm_has_many_ioeventfds(void) |
1097 | d2f2b8a7 | Stefan Hajnoczi | { |
1098 | d2f2b8a7 | Stefan Hajnoczi | if (!kvm_enabled()) {
|
1099 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
1100 | d2f2b8a7 | Stefan Hajnoczi | } |
1101 | d2f2b8a7 | Stefan Hajnoczi | return kvm_state->many_ioeventfds;
|
1102 | d2f2b8a7 | Stefan Hajnoczi | } |
1103 | d2f2b8a7 | Stefan Hajnoczi | |
1104 | 6f0437e8 | Jan Kiszka | void kvm_setup_guest_memory(void *start, size_t size) |
1105 | 6f0437e8 | Jan Kiszka | { |
1106 | 6f0437e8 | Jan Kiszka | if (!kvm_has_sync_mmu()) {
|
1107 | e78815a5 | Andreas Fรคrber | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
|
1108 | 6f0437e8 | Jan Kiszka | |
1109 | 6f0437e8 | Jan Kiszka | if (ret) {
|
1110 | e78815a5 | Andreas Fรคrber | perror("qemu_madvise");
|
1111 | e78815a5 | Andreas Fรคrber | fprintf(stderr, |
1112 | e78815a5 | Andreas Fรคrber | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
|
1113 | 6f0437e8 | Jan Kiszka | exit(1);
|
1114 | 6f0437e8 | Jan Kiszka | } |
1115 | 6f0437e8 | Jan Kiszka | } |
1116 | 6f0437e8 | Jan Kiszka | } |
1117 | 6f0437e8 | Jan Kiszka | |
1118 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1119 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
|
1120 | e22a25c9 | aliguori | target_ulong pc) |
1121 | e22a25c9 | aliguori | { |
1122 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1123 | e22a25c9 | aliguori | |
1124 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) { |
1125 | a426e122 | Jan Kiszka | if (bp->pc == pc) {
|
1126 | e22a25c9 | aliguori | return bp;
|
1127 | a426e122 | Jan Kiszka | } |
1128 | e22a25c9 | aliguori | } |
1129 | e22a25c9 | aliguori | return NULL; |
1130 | e22a25c9 | aliguori | } |
1131 | e22a25c9 | aliguori | |
1132 | e22a25c9 | aliguori | int kvm_sw_breakpoints_active(CPUState *env)
|
1133 | e22a25c9 | aliguori | { |
1134 | 72cf2d4f | Blue Swirl | return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints);
|
1135 | e22a25c9 | aliguori | } |
1136 | e22a25c9 | aliguori | |
1137 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data {
|
1138 | 452e4751 | Glauber Costa | struct kvm_guest_debug dbg;
|
1139 | 452e4751 | Glauber Costa | CPUState *env; |
1140 | 452e4751 | Glauber Costa | int err;
|
1141 | 452e4751 | Glauber Costa | }; |
1142 | 452e4751 | Glauber Costa | |
1143 | 452e4751 | Glauber Costa | static void kvm_invoke_set_guest_debug(void *data) |
1144 | 452e4751 | Glauber Costa | { |
1145 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data *dbg_data = data;
|
1146 | b3807725 | Jan Kiszka | CPUState *env = dbg_data->env; |
1147 | b3807725 | Jan Kiszka | |
1148 | b3807725 | Jan Kiszka | dbg_data->err = kvm_vcpu_ioctl(env, KVM_SET_GUEST_DEBUG, &dbg_data->dbg); |
1149 | 452e4751 | Glauber Costa | } |
1150 | 452e4751 | Glauber Costa | |
1151 | e22a25c9 | aliguori | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
1152 | e22a25c9 | aliguori | { |
1153 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data data;
|
1154 | e22a25c9 | aliguori | |
1155 | b0b1d690 | Jan Kiszka | data.dbg.control = reinject_trap; |
1156 | e22a25c9 | aliguori | |
1157 | b0b1d690 | Jan Kiszka | if (env->singlestep_enabled) {
|
1158 | b0b1d690 | Jan Kiszka | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
1159 | b0b1d690 | Jan Kiszka | } |
1160 | 452e4751 | Glauber Costa | kvm_arch_update_guest_debug(env, &data.dbg); |
1161 | 452e4751 | Glauber Costa | data.env = env; |
1162 | e22a25c9 | aliguori | |
1163 | be41cbe0 | Jan Kiszka | run_on_cpu(env, kvm_invoke_set_guest_debug, &data); |
1164 | 452e4751 | Glauber Costa | return data.err;
|
1165 | e22a25c9 | aliguori | } |
1166 | e22a25c9 | aliguori | |
1167 | e22a25c9 | aliguori | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
|
1168 | e22a25c9 | aliguori | target_ulong len, int type)
|
1169 | e22a25c9 | aliguori | { |
1170 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1171 | e22a25c9 | aliguori | CPUState *env; |
1172 | e22a25c9 | aliguori | int err;
|
1173 | e22a25c9 | aliguori | |
1174 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1175 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1176 | e22a25c9 | aliguori | if (bp) {
|
1177 | e22a25c9 | aliguori | bp->use_count++; |
1178 | e22a25c9 | aliguori | return 0; |
1179 | e22a25c9 | aliguori | } |
1180 | e22a25c9 | aliguori | |
1181 | e22a25c9 | aliguori | bp = qemu_malloc(sizeof(struct kvm_sw_breakpoint)); |
1182 | a426e122 | Jan Kiszka | if (!bp) {
|
1183 | e22a25c9 | aliguori | return -ENOMEM;
|
1184 | a426e122 | Jan Kiszka | } |
1185 | e22a25c9 | aliguori | |
1186 | e22a25c9 | aliguori | bp->pc = addr; |
1187 | e22a25c9 | aliguori | bp->use_count = 1;
|
1188 | e22a25c9 | aliguori | err = kvm_arch_insert_sw_breakpoint(current_env, bp); |
1189 | e22a25c9 | aliguori | if (err) {
|
1190 | e22a25c9 | aliguori | free(bp); |
1191 | e22a25c9 | aliguori | return err;
|
1192 | e22a25c9 | aliguori | } |
1193 | e22a25c9 | aliguori | |
1194 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints, |
1195 | e22a25c9 | aliguori | bp, entry); |
1196 | e22a25c9 | aliguori | } else {
|
1197 | e22a25c9 | aliguori | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
1198 | a426e122 | Jan Kiszka | if (err) {
|
1199 | e22a25c9 | aliguori | return err;
|
1200 | a426e122 | Jan Kiszka | } |
1201 | e22a25c9 | aliguori | } |
1202 | e22a25c9 | aliguori | |
1203 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1204 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1205 | a426e122 | Jan Kiszka | if (err) {
|
1206 | e22a25c9 | aliguori | return err;
|
1207 | a426e122 | Jan Kiszka | } |
1208 | e22a25c9 | aliguori | } |
1209 | e22a25c9 | aliguori | return 0; |
1210 | e22a25c9 | aliguori | } |
1211 | e22a25c9 | aliguori | |
1212 | e22a25c9 | aliguori | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
|
1213 | e22a25c9 | aliguori | target_ulong len, int type)
|
1214 | e22a25c9 | aliguori | { |
1215 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1216 | e22a25c9 | aliguori | CPUState *env; |
1217 | e22a25c9 | aliguori | int err;
|
1218 | e22a25c9 | aliguori | |
1219 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1220 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1221 | a426e122 | Jan Kiszka | if (!bp) {
|
1222 | e22a25c9 | aliguori | return -ENOENT;
|
1223 | a426e122 | Jan Kiszka | } |
1224 | e22a25c9 | aliguori | |
1225 | e22a25c9 | aliguori | if (bp->use_count > 1) { |
1226 | e22a25c9 | aliguori | bp->use_count--; |
1227 | e22a25c9 | aliguori | return 0; |
1228 | e22a25c9 | aliguori | } |
1229 | e22a25c9 | aliguori | |
1230 | e22a25c9 | aliguori | err = kvm_arch_remove_sw_breakpoint(current_env, bp); |
1231 | a426e122 | Jan Kiszka | if (err) {
|
1232 | e22a25c9 | aliguori | return err;
|
1233 | a426e122 | Jan Kiszka | } |
1234 | e22a25c9 | aliguori | |
1235 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry); |
1236 | e22a25c9 | aliguori | qemu_free(bp); |
1237 | e22a25c9 | aliguori | } else {
|
1238 | e22a25c9 | aliguori | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
1239 | a426e122 | Jan Kiszka | if (err) {
|
1240 | e22a25c9 | aliguori | return err;
|
1241 | a426e122 | Jan Kiszka | } |
1242 | e22a25c9 | aliguori | } |
1243 | e22a25c9 | aliguori | |
1244 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1245 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1246 | a426e122 | Jan Kiszka | if (err) {
|
1247 | e22a25c9 | aliguori | return err;
|
1248 | a426e122 | Jan Kiszka | } |
1249 | e22a25c9 | aliguori | } |
1250 | e22a25c9 | aliguori | return 0; |
1251 | e22a25c9 | aliguori | } |
1252 | e22a25c9 | aliguori | |
1253 | e22a25c9 | aliguori | void kvm_remove_all_breakpoints(CPUState *current_env)
|
1254 | e22a25c9 | aliguori | { |
1255 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp, *next;
|
1256 | e22a25c9 | aliguori | KVMState *s = current_env->kvm_state; |
1257 | e22a25c9 | aliguori | CPUState *env; |
1258 | e22a25c9 | aliguori | |
1259 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
1260 | e22a25c9 | aliguori | if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) { |
1261 | e22a25c9 | aliguori | /* Try harder to find a CPU that currently sees the breakpoint. */
|
1262 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1263 | a426e122 | Jan Kiszka | if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) { |
1264 | e22a25c9 | aliguori | break;
|
1265 | a426e122 | Jan Kiszka | } |
1266 | e22a25c9 | aliguori | } |
1267 | e22a25c9 | aliguori | } |
1268 | e22a25c9 | aliguori | } |
1269 | e22a25c9 | aliguori | kvm_arch_remove_all_hw_breakpoints(); |
1270 | e22a25c9 | aliguori | |
1271 | a426e122 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1272 | e22a25c9 | aliguori | kvm_update_guest_debug(env, 0);
|
1273 | a426e122 | Jan Kiszka | } |
1274 | e22a25c9 | aliguori | } |
1275 | e22a25c9 | aliguori | |
1276 | e22a25c9 | aliguori | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
1277 | e22a25c9 | aliguori | |
1278 | e22a25c9 | aliguori | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
1279 | e22a25c9 | aliguori | { |
1280 | e22a25c9 | aliguori | return -EINVAL;
|
1281 | e22a25c9 | aliguori | } |
1282 | e22a25c9 | aliguori | |
1283 | e22a25c9 | aliguori | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
|
1284 | e22a25c9 | aliguori | target_ulong len, int type)
|
1285 | e22a25c9 | aliguori | { |
1286 | e22a25c9 | aliguori | return -EINVAL;
|
1287 | e22a25c9 | aliguori | } |
1288 | e22a25c9 | aliguori | |
1289 | e22a25c9 | aliguori | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
|
1290 | e22a25c9 | aliguori | target_ulong len, int type)
|
1291 | e22a25c9 | aliguori | { |
1292 | e22a25c9 | aliguori | return -EINVAL;
|
1293 | e22a25c9 | aliguori | } |
1294 | e22a25c9 | aliguori | |
1295 | e22a25c9 | aliguori | void kvm_remove_all_breakpoints(CPUState *current_env)
|
1296 | e22a25c9 | aliguori | { |
1297 | e22a25c9 | aliguori | } |
1298 | e22a25c9 | aliguori | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
1299 | cc84de95 | Marcelo Tosatti | |
1300 | cc84de95 | Marcelo Tosatti | int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset) |
1301 | cc84de95 | Marcelo Tosatti | { |
1302 | cc84de95 | Marcelo Tosatti | struct kvm_signal_mask *sigmask;
|
1303 | cc84de95 | Marcelo Tosatti | int r;
|
1304 | cc84de95 | Marcelo Tosatti | |
1305 | a426e122 | Jan Kiszka | if (!sigset) {
|
1306 | cc84de95 | Marcelo Tosatti | return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL); |
1307 | a426e122 | Jan Kiszka | } |
1308 | cc84de95 | Marcelo Tosatti | |
1309 | cc84de95 | Marcelo Tosatti | sigmask = qemu_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
1310 | cc84de95 | Marcelo Tosatti | |
1311 | cc84de95 | Marcelo Tosatti | sigmask->len = 8;
|
1312 | cc84de95 | Marcelo Tosatti | memcpy(sigmask->sigset, sigset, sizeof(*sigset));
|
1313 | cc84de95 | Marcelo Tosatti | r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask); |
1314 | cc84de95 | Marcelo Tosatti | free(sigmask); |
1315 | cc84de95 | Marcelo Tosatti | |
1316 | cc84de95 | Marcelo Tosatti | return r;
|
1317 | cc84de95 | Marcelo Tosatti | } |
1318 | ca821806 | Michael S. Tsirkin | |
1319 | 44f1a3d8 | Cam Macdonell | int kvm_set_ioeventfd_mmio_long(int fd, uint32_t addr, uint32_t val, bool assign) |
1320 | 44f1a3d8 | Cam Macdonell | { |
1321 | 44f1a3d8 | Cam Macdonell | #ifdef KVM_IOEVENTFD
|
1322 | 44f1a3d8 | Cam Macdonell | int ret;
|
1323 | 44f1a3d8 | Cam Macdonell | struct kvm_ioeventfd iofd;
|
1324 | 44f1a3d8 | Cam Macdonell | |
1325 | 44f1a3d8 | Cam Macdonell | iofd.datamatch = val; |
1326 | 44f1a3d8 | Cam Macdonell | iofd.addr = addr; |
1327 | 44f1a3d8 | Cam Macdonell | iofd.len = 4;
|
1328 | 44f1a3d8 | Cam Macdonell | iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH; |
1329 | 44f1a3d8 | Cam Macdonell | iofd.fd = fd; |
1330 | 44f1a3d8 | Cam Macdonell | |
1331 | 44f1a3d8 | Cam Macdonell | if (!kvm_enabled()) {
|
1332 | 44f1a3d8 | Cam Macdonell | return -ENOSYS;
|
1333 | 44f1a3d8 | Cam Macdonell | } |
1334 | 44f1a3d8 | Cam Macdonell | |
1335 | 44f1a3d8 | Cam Macdonell | if (!assign) {
|
1336 | 44f1a3d8 | Cam Macdonell | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
1337 | 44f1a3d8 | Cam Macdonell | } |
1338 | 44f1a3d8 | Cam Macdonell | |
1339 | 44f1a3d8 | Cam Macdonell | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
1340 | 44f1a3d8 | Cam Macdonell | |
1341 | 44f1a3d8 | Cam Macdonell | if (ret < 0) { |
1342 | 44f1a3d8 | Cam Macdonell | return -errno;
|
1343 | 44f1a3d8 | Cam Macdonell | } |
1344 | 44f1a3d8 | Cam Macdonell | |
1345 | 44f1a3d8 | Cam Macdonell | return 0; |
1346 | 44f1a3d8 | Cam Macdonell | #else
|
1347 | 44f1a3d8 | Cam Macdonell | return -ENOSYS;
|
1348 | 44f1a3d8 | Cam Macdonell | #endif
|
1349 | 44f1a3d8 | Cam Macdonell | } |
1350 | 44f1a3d8 | Cam Macdonell | |
1351 | ca821806 | Michael S. Tsirkin | int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) |
1352 | ca821806 | Michael S. Tsirkin | { |
1353 | 98c8573e | Paolo Bonzini | #ifdef KVM_IOEVENTFD
|
1354 | ca821806 | Michael S. Tsirkin | struct kvm_ioeventfd kick = {
|
1355 | ca821806 | Michael S. Tsirkin | .datamatch = val, |
1356 | ca821806 | Michael S. Tsirkin | .addr = addr, |
1357 | ca821806 | Michael S. Tsirkin | .len = 2,
|
1358 | ca821806 | Michael S. Tsirkin | .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO, |
1359 | ca821806 | Michael S. Tsirkin | .fd = fd, |
1360 | ca821806 | Michael S. Tsirkin | }; |
1361 | ca821806 | Michael S. Tsirkin | int r;
|
1362 | a426e122 | Jan Kiszka | if (!kvm_enabled()) {
|
1363 | ca821806 | Michael S. Tsirkin | return -ENOSYS;
|
1364 | a426e122 | Jan Kiszka | } |
1365 | a426e122 | Jan Kiszka | if (!assign) {
|
1366 | ca821806 | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
1367 | a426e122 | Jan Kiszka | } |
1368 | ca821806 | Michael S. Tsirkin | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
1369 | a426e122 | Jan Kiszka | if (r < 0) { |
1370 | ca821806 | Michael S. Tsirkin | return r;
|
1371 | a426e122 | Jan Kiszka | } |
1372 | ca821806 | Michael S. Tsirkin | return 0; |
1373 | 98c8573e | Paolo Bonzini | #else
|
1374 | 98c8573e | Paolo Bonzini | return -ENOSYS;
|
1375 | ca821806 | Michael S. Tsirkin | #endif
|
1376 | 98c8573e | Paolo Bonzini | } |