Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License, version 2, as |
| 4 | * published by the Free Software Foundation. |
| 5 | * |
| 6 | * This program is distributed in the hope that it will be useful, |
| 7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 9 | * GNU General Public License for more details. |
| 10 | * |
| 11 | * You should have received a copy of the GNU General Public License |
| 12 | * along with this program; if not, write to the Free Software |
| 13 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 14 | * |
| 15 | * Copyright IBM Corp. 2007 |
Scott Wood | 4cd35f6 | 2011-06-14 18:34:31 -0500 | [diff] [blame] | 16 | * Copyright 2010-2011 Freescale Semiconductor, Inc. |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 17 | * |
| 18 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> |
| 19 | * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> |
| 20 | */ |
| 21 | |
| 22 | #include <linux/errno.h> |
| 23 | #include <linux/err.h> |
| 24 | #include <linux/kvm_host.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 25 | #include <linux/gfp.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 26 | #include <linux/module.h> |
| 27 | #include <linux/vmalloc.h> |
| 28 | #include <linux/fs.h> |
Hollis Blanchard | 7924bd4 | 2008-12-02 15:51:55 -0600 | [diff] [blame] | 29 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 30 | #include <asm/cputable.h> |
| 31 | #include <asm/uaccess.h> |
| 32 | #include <asm/kvm_ppc.h> |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 33 | #include "timing.h" |
Hollis Blanchard | d9fbd03 | 2008-11-05 09:36:13 -0600 | [diff] [blame] | 34 | #include <asm/cacheflush.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 35 | |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 36 | #include "booke.h" |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 37 | |
Hollis Blanchard | d9fbd03 | 2008-11-05 09:36:13 -0600 | [diff] [blame] | 38 | unsigned long kvmppc_booke_handlers; |
| 39 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 40 | #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM |
| 41 | #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU |
| 42 | |
| 43 | struct kvm_stats_debugfs_item debugfs_entries[] = { |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 44 | { "mmio", VCPU_STAT(mmio_exits) }, |
| 45 | { "dcr", VCPU_STAT(dcr_exits) }, |
| 46 | { "sig", VCPU_STAT(signal_exits) }, |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 47 | { "itlb_r", VCPU_STAT(itlb_real_miss_exits) }, |
| 48 | { "itlb_v", VCPU_STAT(itlb_virt_miss_exits) }, |
| 49 | { "dtlb_r", VCPU_STAT(dtlb_real_miss_exits) }, |
| 50 | { "dtlb_v", VCPU_STAT(dtlb_virt_miss_exits) }, |
| 51 | { "sysc", VCPU_STAT(syscall_exits) }, |
| 52 | { "isi", VCPU_STAT(isi_exits) }, |
| 53 | { "dsi", VCPU_STAT(dsi_exits) }, |
| 54 | { "inst_emu", VCPU_STAT(emulated_inst_exits) }, |
| 55 | { "dec", VCPU_STAT(dec_exits) }, |
| 56 | { "ext_intr", VCPU_STAT(ext_intr_exits) }, |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 57 | { "halt_wakeup", VCPU_STAT(halt_wakeup) }, |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 58 | { NULL } |
| 59 | }; |
| 60 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 61 | /* TODO: use vcpu_printf() */ |
| 62 | void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu) |
| 63 | { |
| 64 | int i; |
| 65 | |
Alexander Graf | 666e725 | 2010-07-29 14:47:43 +0200 | [diff] [blame] | 66 | printk("pc: %08lx msr: %08llx\n", vcpu->arch.pc, vcpu->arch.shared->msr); |
Hollis Blanchard | 5cf8ca2 | 2008-11-05 09:36:19 -0600 | [diff] [blame] | 67 | printk("lr: %08lx ctr: %08lx\n", vcpu->arch.lr, vcpu->arch.ctr); |
Alexander Graf | de7906c | 2010-07-29 14:47:46 +0200 | [diff] [blame] | 68 | printk("srr0: %08llx srr1: %08llx\n", vcpu->arch.shared->srr0, |
| 69 | vcpu->arch.shared->srr1); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 70 | |
| 71 | printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions); |
| 72 | |
| 73 | for (i = 0; i < 32; i += 4) { |
Hollis Blanchard | 5cf8ca2 | 2008-11-05 09:36:19 -0600 | [diff] [blame] | 74 | printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 75 | kvmppc_get_gpr(vcpu, i), |
| 76 | kvmppc_get_gpr(vcpu, i+1), |
| 77 | kvmppc_get_gpr(vcpu, i+2), |
| 78 | kvmppc_get_gpr(vcpu, i+3)); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 79 | } |
| 80 | } |
| 81 | |
Scott Wood | 4cd35f6 | 2011-06-14 18:34:31 -0500 | [diff] [blame] | 82 | #ifdef CONFIG_SPE |
| 83 | void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu) |
| 84 | { |
| 85 | preempt_disable(); |
| 86 | enable_kernel_spe(); |
| 87 | kvmppc_save_guest_spe(vcpu); |
| 88 | vcpu->arch.shadow_msr &= ~MSR_SPE; |
| 89 | preempt_enable(); |
| 90 | } |
| 91 | |
| 92 | static void kvmppc_vcpu_enable_spe(struct kvm_vcpu *vcpu) |
| 93 | { |
| 94 | preempt_disable(); |
| 95 | enable_kernel_spe(); |
| 96 | kvmppc_load_guest_spe(vcpu); |
| 97 | vcpu->arch.shadow_msr |= MSR_SPE; |
| 98 | preempt_enable(); |
| 99 | } |
| 100 | |
| 101 | static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu) |
| 102 | { |
| 103 | if (vcpu->arch.shared->msr & MSR_SPE) { |
| 104 | if (!(vcpu->arch.shadow_msr & MSR_SPE)) |
| 105 | kvmppc_vcpu_enable_spe(vcpu); |
| 106 | } else if (vcpu->arch.shadow_msr & MSR_SPE) { |
| 107 | kvmppc_vcpu_disable_spe(vcpu); |
| 108 | } |
| 109 | } |
| 110 | #else |
| 111 | static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu) |
| 112 | { |
| 113 | } |
| 114 | #endif |
| 115 | |
Liu Yu | dd9ebf1f | 2011-06-14 18:35:14 -0500 | [diff] [blame] | 116 | /* |
| 117 | * Helper function for "full" MSR writes. No need to call this if only |
| 118 | * EE/CE/ME/DE/RI are changing. |
| 119 | */ |
Scott Wood | 4cd35f6 | 2011-06-14 18:34:31 -0500 | [diff] [blame] | 120 | void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr) |
| 121 | { |
Liu Yu | dd9ebf1f | 2011-06-14 18:35:14 -0500 | [diff] [blame] | 122 | u32 old_msr = vcpu->arch.shared->msr; |
Scott Wood | 4cd35f6 | 2011-06-14 18:34:31 -0500 | [diff] [blame] | 123 | |
| 124 | vcpu->arch.shared->msr = new_msr; |
| 125 | |
Liu Yu | dd9ebf1f | 2011-06-14 18:35:14 -0500 | [diff] [blame] | 126 | kvmppc_mmu_msr_notify(vcpu, old_msr); |
Scott Wood | 4cd35f6 | 2011-06-14 18:34:31 -0500 | [diff] [blame] | 127 | kvmppc_vcpu_sync_spe(vcpu); |
| 128 | } |
| 129 | |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 130 | static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu, |
| 131 | unsigned int priority) |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 132 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 133 | set_bit(priority, &vcpu->arch.pending_exceptions); |
| 134 | } |
| 135 | |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 136 | static void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, |
| 137 | ulong dear_flags, ulong esr_flags) |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 138 | { |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 139 | vcpu->arch.queued_dear = dear_flags; |
| 140 | vcpu->arch.queued_esr = esr_flags; |
| 141 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS); |
| 142 | } |
| 143 | |
| 144 | static void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, |
| 145 | ulong dear_flags, ulong esr_flags) |
| 146 | { |
| 147 | vcpu->arch.queued_dear = dear_flags; |
| 148 | vcpu->arch.queued_esr = esr_flags; |
| 149 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE); |
| 150 | } |
| 151 | |
| 152 | static void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, |
| 153 | ulong esr_flags) |
| 154 | { |
| 155 | vcpu->arch.queued_esr = esr_flags; |
| 156 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE); |
| 157 | } |
| 158 | |
| 159 | void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong esr_flags) |
| 160 | { |
| 161 | vcpu->arch.queued_esr = esr_flags; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 162 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM); |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu) |
| 166 | { |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 167 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER); |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu) |
| 171 | { |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 172 | return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 173 | } |
| 174 | |
Alexander Graf | 7706664d | 2009-12-21 20:21:24 +0100 | [diff] [blame] | 175 | void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) |
| 176 | { |
| 177 | clear_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); |
| 178 | } |
| 179 | |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 180 | void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, |
| 181 | struct kvm_interrupt *irq) |
| 182 | { |
Alexander Graf | c5335f1 | 2010-08-30 14:03:24 +0200 | [diff] [blame] | 183 | unsigned int prio = BOOKE_IRQPRIO_EXTERNAL; |
| 184 | |
| 185 | if (irq->irq == KVM_INTERRUPT_SET_LEVEL) |
| 186 | prio = BOOKE_IRQPRIO_EXTERNAL_LEVEL; |
| 187 | |
| 188 | kvmppc_booke_queue_irqprio(vcpu, prio); |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 189 | } |
| 190 | |
Alexander Graf | 4496f97 | 2010-04-07 10:03:25 +0200 | [diff] [blame] | 191 | void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu, |
| 192 | struct kvm_interrupt *irq) |
| 193 | { |
| 194 | clear_bit(BOOKE_IRQPRIO_EXTERNAL, &vcpu->arch.pending_exceptions); |
Alexander Graf | c5335f1 | 2010-08-30 14:03:24 +0200 | [diff] [blame] | 195 | clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL, &vcpu->arch.pending_exceptions); |
Alexander Graf | 4496f97 | 2010-04-07 10:03:25 +0200 | [diff] [blame] | 196 | } |
| 197 | |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 198 | /* Deliver the interrupt of the corresponding priority, if possible. */ |
| 199 | static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu, |
| 200 | unsigned int priority) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 201 | { |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 202 | int allowed = 0; |
Asias He | 6045be5 | 2010-06-19 16:52:12 +0800 | [diff] [blame] | 203 | ulong uninitialized_var(msr_mask); |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 204 | bool update_esr = false, update_dear = false; |
Alexander Graf | 5c6cedf | 2010-07-29 14:47:49 +0200 | [diff] [blame] | 205 | ulong crit_raw = vcpu->arch.shared->critical; |
| 206 | ulong crit_r1 = kvmppc_get_gpr(vcpu, 1); |
| 207 | bool crit; |
Alexander Graf | c5335f1 | 2010-08-30 14:03:24 +0200 | [diff] [blame] | 208 | bool keep_irq = false; |
Alexander Graf | 5c6cedf | 2010-07-29 14:47:49 +0200 | [diff] [blame] | 209 | |
| 210 | /* Truncate crit indicators in 32 bit mode */ |
| 211 | if (!(vcpu->arch.shared->msr & MSR_SF)) { |
| 212 | crit_raw &= 0xffffffff; |
| 213 | crit_r1 &= 0xffffffff; |
| 214 | } |
| 215 | |
| 216 | /* Critical section when crit == r1 */ |
| 217 | crit = (crit_raw == crit_r1); |
| 218 | /* ... and we're in supervisor mode */ |
| 219 | crit = crit && !(vcpu->arch.shared->msr & MSR_PR); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 220 | |
Alexander Graf | c5335f1 | 2010-08-30 14:03:24 +0200 | [diff] [blame] | 221 | if (priority == BOOKE_IRQPRIO_EXTERNAL_LEVEL) { |
| 222 | priority = BOOKE_IRQPRIO_EXTERNAL; |
| 223 | keep_irq = true; |
| 224 | } |
| 225 | |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 226 | switch (priority) { |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 227 | case BOOKE_IRQPRIO_DTLB_MISS: |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 228 | case BOOKE_IRQPRIO_DATA_STORAGE: |
| 229 | update_dear = true; |
| 230 | /* fall through */ |
| 231 | case BOOKE_IRQPRIO_INST_STORAGE: |
| 232 | case BOOKE_IRQPRIO_PROGRAM: |
| 233 | update_esr = true; |
| 234 | /* fall through */ |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 235 | case BOOKE_IRQPRIO_ITLB_MISS: |
| 236 | case BOOKE_IRQPRIO_SYSCALL: |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 237 | case BOOKE_IRQPRIO_FP_UNAVAIL: |
Hollis Blanchard | bb3a8a1 | 2009-01-03 16:23:13 -0600 | [diff] [blame] | 238 | case BOOKE_IRQPRIO_SPE_UNAVAIL: |
| 239 | case BOOKE_IRQPRIO_SPE_FP_DATA: |
| 240 | case BOOKE_IRQPRIO_SPE_FP_ROUND: |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 241 | case BOOKE_IRQPRIO_AP_UNAVAIL: |
| 242 | case BOOKE_IRQPRIO_ALIGNMENT: |
| 243 | allowed = 1; |
| 244 | msr_mask = MSR_CE|MSR_ME|MSR_DE; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 245 | break; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 246 | case BOOKE_IRQPRIO_CRITICAL: |
| 247 | case BOOKE_IRQPRIO_WATCHDOG: |
Alexander Graf | 666e725 | 2010-07-29 14:47:43 +0200 | [diff] [blame] | 248 | allowed = vcpu->arch.shared->msr & MSR_CE; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 249 | msr_mask = MSR_ME; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 250 | break; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 251 | case BOOKE_IRQPRIO_MACHINE_CHECK: |
Alexander Graf | 666e725 | 2010-07-29 14:47:43 +0200 | [diff] [blame] | 252 | allowed = vcpu->arch.shared->msr & MSR_ME; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 253 | msr_mask = 0; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 254 | break; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 255 | case BOOKE_IRQPRIO_DECREMENTER: |
| 256 | case BOOKE_IRQPRIO_FIT: |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 257 | keep_irq = true; |
| 258 | /* fall through */ |
| 259 | case BOOKE_IRQPRIO_EXTERNAL: |
Alexander Graf | 666e725 | 2010-07-29 14:47:43 +0200 | [diff] [blame] | 260 | allowed = vcpu->arch.shared->msr & MSR_EE; |
Alexander Graf | 5c6cedf | 2010-07-29 14:47:49 +0200 | [diff] [blame] | 261 | allowed = allowed && !crit; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 262 | msr_mask = MSR_CE|MSR_ME|MSR_DE; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 263 | break; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 264 | case BOOKE_IRQPRIO_DEBUG: |
Alexander Graf | 666e725 | 2010-07-29 14:47:43 +0200 | [diff] [blame] | 265 | allowed = vcpu->arch.shared->msr & MSR_DE; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 266 | msr_mask = MSR_ME; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 267 | break; |
| 268 | } |
| 269 | |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 270 | if (allowed) { |
Alexander Graf | de7906c | 2010-07-29 14:47:46 +0200 | [diff] [blame] | 271 | vcpu->arch.shared->srr0 = vcpu->arch.pc; |
| 272 | vcpu->arch.shared->srr1 = vcpu->arch.shared->msr; |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 273 | vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[priority]; |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 274 | if (update_esr == true) |
Scott Wood | b590497 | 2011-11-08 18:23:30 -0600 | [diff] [blame] | 275 | vcpu->arch.shared->esr = vcpu->arch.queued_esr; |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 276 | if (update_dear == true) |
Alexander Graf | 5e03018 | 2010-07-29 14:47:45 +0200 | [diff] [blame] | 277 | vcpu->arch.shared->dar = vcpu->arch.queued_dear; |
Alexander Graf | 666e725 | 2010-07-29 14:47:43 +0200 | [diff] [blame] | 278 | kvmppc_set_msr(vcpu, vcpu->arch.shared->msr & msr_mask); |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 279 | |
Alexander Graf | c5335f1 | 2010-08-30 14:03:24 +0200 | [diff] [blame] | 280 | if (!keep_irq) |
| 281 | clear_bit(priority, &vcpu->arch.pending_exceptions); |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | return allowed; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 285 | } |
| 286 | |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 287 | static void update_timer_ints(struct kvm_vcpu *vcpu) |
| 288 | { |
| 289 | if ((vcpu->arch.tcr & TCR_DIE) && (vcpu->arch.tsr & TSR_DIS)) |
| 290 | kvmppc_core_queue_dec(vcpu); |
| 291 | else |
| 292 | kvmppc_core_dequeue_dec(vcpu); |
| 293 | } |
| 294 | |
Scott Wood | c59a6a3 | 2011-11-08 18:23:25 -0600 | [diff] [blame] | 295 | static void kvmppc_core_check_exceptions(struct kvm_vcpu *vcpu) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 296 | { |
| 297 | unsigned long *pending = &vcpu->arch.pending_exceptions; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 298 | unsigned int priority; |
| 299 | |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 300 | if (vcpu->requests) { |
| 301 | if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu)) { |
| 302 | smp_mb(); |
| 303 | update_timer_ints(vcpu); |
| 304 | } |
| 305 | } |
| 306 | |
Hollis Blanchard | 9ab8084 | 2008-11-05 09:36:22 -0600 | [diff] [blame] | 307 | priority = __ffs(*pending); |
Hollis Blanchard | bdc89f1 | 2009-01-03 16:23:12 -0600 | [diff] [blame] | 308 | while (priority <= BOOKE_IRQPRIO_MAX) { |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 309 | if (kvmppc_booke_irqprio_deliver(vcpu, priority)) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 310 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 311 | |
| 312 | priority = find_next_bit(pending, |
| 313 | BITS_PER_BYTE * sizeof(*pending), |
| 314 | priority + 1); |
| 315 | } |
Alexander Graf | 90bba35 | 2010-07-29 14:47:51 +0200 | [diff] [blame] | 316 | |
| 317 | /* Tell the guest about our interrupt status */ |
Scott Wood | 29ac26e | 2011-11-08 18:23:27 -0600 | [diff] [blame] | 318 | vcpu->arch.shared->int_pending = !!*pending; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 319 | } |
| 320 | |
Scott Wood | c59a6a3 | 2011-11-08 18:23:25 -0600 | [diff] [blame] | 321 | /* Check pending exceptions and deliver one, if possible. */ |
| 322 | void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu) |
| 323 | { |
| 324 | WARN_ON_ONCE(!irqs_disabled()); |
| 325 | |
| 326 | kvmppc_core_check_exceptions(vcpu); |
| 327 | |
| 328 | if (vcpu->arch.shared->msr & MSR_WE) { |
| 329 | local_irq_enable(); |
| 330 | kvm_vcpu_block(vcpu); |
| 331 | local_irq_disable(); |
| 332 | |
| 333 | kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS); |
| 334 | kvmppc_core_check_exceptions(vcpu); |
| 335 | }; |
| 336 | } |
| 337 | |
Paul Mackerras | df6909e5 | 2011-06-29 00:19:50 +0000 | [diff] [blame] | 338 | int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) |
| 339 | { |
| 340 | int ret; |
| 341 | |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 342 | if (!vcpu->arch.sane) { |
| 343 | kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR; |
| 344 | return -EINVAL; |
| 345 | } |
| 346 | |
Paul Mackerras | df6909e5 | 2011-06-29 00:19:50 +0000 | [diff] [blame] | 347 | local_irq_disable(); |
Scott Wood | 1d1ef22 | 2011-11-08 16:11:59 -0600 | [diff] [blame] | 348 | |
Scott Wood | 25051b5a | 2011-11-08 18:23:23 -0600 | [diff] [blame] | 349 | kvmppc_core_prepare_to_enter(vcpu); |
| 350 | |
Scott Wood | 1d1ef22 | 2011-11-08 16:11:59 -0600 | [diff] [blame] | 351 | if (signal_pending(current)) { |
| 352 | kvm_run->exit_reason = KVM_EXIT_INTR; |
| 353 | ret = -EINTR; |
| 354 | goto out; |
| 355 | } |
| 356 | |
Paul Mackerras | df6909e5 | 2011-06-29 00:19:50 +0000 | [diff] [blame] | 357 | kvm_guest_enter(); |
| 358 | ret = __kvmppc_vcpu_run(kvm_run, vcpu); |
| 359 | kvm_guest_exit(); |
Paul Mackerras | df6909e5 | 2011-06-29 00:19:50 +0000 | [diff] [blame] | 360 | |
Scott Wood | 1d1ef22 | 2011-11-08 16:11:59 -0600 | [diff] [blame] | 361 | out: |
| 362 | local_irq_enable(); |
Paul Mackerras | df6909e5 | 2011-06-29 00:19:50 +0000 | [diff] [blame] | 363 | return ret; |
| 364 | } |
| 365 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 366 | /** |
| 367 | * kvmppc_handle_exit |
| 368 | * |
| 369 | * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV) |
| 370 | */ |
| 371 | int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, |
| 372 | unsigned int exit_nr) |
| 373 | { |
| 374 | enum emulation_result er; |
| 375 | int r = RESUME_HOST; |
| 376 | |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 377 | /* update before a new last_exit_type is rewritten */ |
| 378 | kvmppc_update_timing_stats(vcpu); |
| 379 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 380 | local_irq_enable(); |
| 381 | |
| 382 | run->exit_reason = KVM_EXIT_UNKNOWN; |
| 383 | run->ready_for_interrupt_injection = 1; |
| 384 | |
| 385 | switch (exit_nr) { |
| 386 | case BOOKE_INTERRUPT_MACHINE_CHECK: |
| 387 | printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR)); |
| 388 | kvmppc_dump_vcpu(vcpu); |
| 389 | r = RESUME_HOST; |
| 390 | break; |
| 391 | |
| 392 | case BOOKE_INTERRUPT_EXTERNAL: |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 393 | kvmppc_account_exit(vcpu, EXT_INTR_EXITS); |
Hollis Blanchard | 1b6766c | 2008-11-05 09:36:21 -0600 | [diff] [blame] | 394 | if (need_resched()) |
| 395 | cond_resched(); |
| 396 | r = RESUME_GUEST; |
| 397 | break; |
| 398 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 399 | case BOOKE_INTERRUPT_DECREMENTER: |
| 400 | /* Since we switched IVPR back to the host's value, the host |
| 401 | * handled this interrupt the moment we enabled interrupts. |
| 402 | * Now we just offer it a chance to reschedule the guest. */ |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 403 | kvmppc_account_exit(vcpu, DEC_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 404 | if (need_resched()) |
| 405 | cond_resched(); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 406 | r = RESUME_GUEST; |
| 407 | break; |
| 408 | |
| 409 | case BOOKE_INTERRUPT_PROGRAM: |
Alexander Graf | 666e725 | 2010-07-29 14:47:43 +0200 | [diff] [blame] | 410 | if (vcpu->arch.shared->msr & MSR_PR) { |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 411 | /* Program traps generated by user-level software must be handled |
| 412 | * by the guest kernel. */ |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 413 | kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 414 | r = RESUME_GUEST; |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 415 | kvmppc_account_exit(vcpu, USR_PR_INST); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 416 | break; |
| 417 | } |
| 418 | |
| 419 | er = kvmppc_emulate_instruction(run, vcpu); |
| 420 | switch (er) { |
| 421 | case EMULATE_DONE: |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 422 | /* don't overwrite subtypes, just account kvm_stats */ |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 423 | kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 424 | /* Future optimization: only reload non-volatiles if |
| 425 | * they were actually modified by emulation. */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 426 | r = RESUME_GUEST_NV; |
| 427 | break; |
| 428 | case EMULATE_DO_DCR: |
| 429 | run->exit_reason = KVM_EXIT_DCR; |
| 430 | r = RESUME_HOST; |
| 431 | break; |
| 432 | case EMULATE_FAIL: |
| 433 | /* XXX Deliver Program interrupt to guest. */ |
Hollis Blanchard | 5cf8ca2 | 2008-11-05 09:36:19 -0600 | [diff] [blame] | 434 | printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n", |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 435 | __func__, vcpu->arch.pc, vcpu->arch.last_inst); |
| 436 | /* For debugging, encode the failing instruction and |
| 437 | * report it to userspace. */ |
| 438 | run->hw.hardware_exit_reason = ~0ULL << 32; |
| 439 | run->hw.hardware_exit_reason |= vcpu->arch.last_inst; |
| 440 | r = RESUME_HOST; |
| 441 | break; |
| 442 | default: |
| 443 | BUG(); |
| 444 | } |
| 445 | break; |
| 446 | |
Christian Ehrhardt | de368dc | 2008-04-29 18:18:23 +0200 | [diff] [blame] | 447 | case BOOKE_INTERRUPT_FP_UNAVAIL: |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 448 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL); |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 449 | kvmppc_account_exit(vcpu, FP_UNAVAIL); |
Christian Ehrhardt | de368dc | 2008-04-29 18:18:23 +0200 | [diff] [blame] | 450 | r = RESUME_GUEST; |
| 451 | break; |
| 452 | |
Scott Wood | 4cd35f6 | 2011-06-14 18:34:31 -0500 | [diff] [blame] | 453 | #ifdef CONFIG_SPE |
| 454 | case BOOKE_INTERRUPT_SPE_UNAVAIL: { |
| 455 | if (vcpu->arch.shared->msr & MSR_SPE) |
| 456 | kvmppc_vcpu_enable_spe(vcpu); |
| 457 | else |
| 458 | kvmppc_booke_queue_irqprio(vcpu, |
| 459 | BOOKE_IRQPRIO_SPE_UNAVAIL); |
Hollis Blanchard | bb3a8a1 | 2009-01-03 16:23:13 -0600 | [diff] [blame] | 460 | r = RESUME_GUEST; |
| 461 | break; |
Scott Wood | 4cd35f6 | 2011-06-14 18:34:31 -0500 | [diff] [blame] | 462 | } |
Hollis Blanchard | bb3a8a1 | 2009-01-03 16:23:13 -0600 | [diff] [blame] | 463 | |
| 464 | case BOOKE_INTERRUPT_SPE_FP_DATA: |
| 465 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_DATA); |
| 466 | r = RESUME_GUEST; |
| 467 | break; |
| 468 | |
| 469 | case BOOKE_INTERRUPT_SPE_FP_ROUND: |
| 470 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_ROUND); |
| 471 | r = RESUME_GUEST; |
| 472 | break; |
Scott Wood | 4cd35f6 | 2011-06-14 18:34:31 -0500 | [diff] [blame] | 473 | #else |
| 474 | case BOOKE_INTERRUPT_SPE_UNAVAIL: |
| 475 | /* |
| 476 | * Guest wants SPE, but host kernel doesn't support it. Send |
| 477 | * an "unimplemented operation" program check to the guest. |
| 478 | */ |
| 479 | kvmppc_core_queue_program(vcpu, ESR_PUO | ESR_SPV); |
| 480 | r = RESUME_GUEST; |
| 481 | break; |
| 482 | |
| 483 | /* |
| 484 | * These really should never happen without CONFIG_SPE, |
| 485 | * as we should never enable the real MSR[SPE] in the guest. |
| 486 | */ |
| 487 | case BOOKE_INTERRUPT_SPE_FP_DATA: |
| 488 | case BOOKE_INTERRUPT_SPE_FP_ROUND: |
| 489 | printk(KERN_CRIT "%s: unexpected SPE interrupt %u at %08lx\n", |
| 490 | __func__, exit_nr, vcpu->arch.pc); |
| 491 | run->hw.hardware_exit_reason = exit_nr; |
| 492 | r = RESUME_HOST; |
| 493 | break; |
| 494 | #endif |
Hollis Blanchard | bb3a8a1 | 2009-01-03 16:23:13 -0600 | [diff] [blame] | 495 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 496 | case BOOKE_INTERRUPT_DATA_STORAGE: |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 497 | kvmppc_core_queue_data_storage(vcpu, vcpu->arch.fault_dear, |
| 498 | vcpu->arch.fault_esr); |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 499 | kvmppc_account_exit(vcpu, DSI_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 500 | r = RESUME_GUEST; |
| 501 | break; |
| 502 | |
| 503 | case BOOKE_INTERRUPT_INST_STORAGE: |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 504 | kvmppc_core_queue_inst_storage(vcpu, vcpu->arch.fault_esr); |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 505 | kvmppc_account_exit(vcpu, ISI_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 506 | r = RESUME_GUEST; |
| 507 | break; |
| 508 | |
| 509 | case BOOKE_INTERRUPT_SYSCALL: |
Alexander Graf | 2a342ed | 2010-07-29 14:47:48 +0200 | [diff] [blame] | 510 | if (!(vcpu->arch.shared->msr & MSR_PR) && |
| 511 | (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) { |
| 512 | /* KVM PV hypercalls */ |
| 513 | kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu)); |
| 514 | r = RESUME_GUEST; |
| 515 | } else { |
| 516 | /* Guest syscalls */ |
| 517 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL); |
| 518 | } |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 519 | kvmppc_account_exit(vcpu, SYSCALL_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 520 | r = RESUME_GUEST; |
| 521 | break; |
| 522 | |
| 523 | case BOOKE_INTERRUPT_DTLB_MISS: { |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 524 | unsigned long eaddr = vcpu->arch.fault_dear; |
Hollis Blanchard | 7924bd4 | 2008-12-02 15:51:55 -0600 | [diff] [blame] | 525 | int gtlb_index; |
Hollis Blanchard | 475e7cd | 2009-01-03 16:23:00 -0600 | [diff] [blame] | 526 | gpa_t gpaddr; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 527 | gfn_t gfn; |
| 528 | |
Scott Wood | a4cd8b2 | 2011-06-14 18:34:41 -0500 | [diff] [blame] | 529 | #ifdef CONFIG_KVM_E500 |
| 530 | if (!(vcpu->arch.shared->msr & MSR_PR) && |
| 531 | (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) { |
| 532 | kvmppc_map_magic(vcpu); |
| 533 | kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS); |
| 534 | r = RESUME_GUEST; |
| 535 | |
| 536 | break; |
| 537 | } |
| 538 | #endif |
| 539 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 540 | /* Check the guest TLB. */ |
Hollis Blanchard | fa86b8d | 2009-01-03 16:23:03 -0600 | [diff] [blame] | 541 | gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr); |
Hollis Blanchard | 7924bd4 | 2008-12-02 15:51:55 -0600 | [diff] [blame] | 542 | if (gtlb_index < 0) { |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 543 | /* The guest didn't have a mapping for it. */ |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 544 | kvmppc_core_queue_dtlb_miss(vcpu, |
| 545 | vcpu->arch.fault_dear, |
| 546 | vcpu->arch.fault_esr); |
Hollis Blanchard | b52a638 | 2009-01-03 16:23:11 -0600 | [diff] [blame] | 547 | kvmppc_mmu_dtlb_miss(vcpu); |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 548 | kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 549 | r = RESUME_GUEST; |
| 550 | break; |
| 551 | } |
| 552 | |
Hollis Blanchard | be8d1ca | 2009-01-03 16:23:02 -0600 | [diff] [blame] | 553 | gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr); |
Hollis Blanchard | 475e7cd | 2009-01-03 16:23:00 -0600 | [diff] [blame] | 554 | gfn = gpaddr >> PAGE_SHIFT; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 555 | |
| 556 | if (kvm_is_visible_gfn(vcpu->kvm, gfn)) { |
| 557 | /* The guest TLB had a mapping, but the shadow TLB |
| 558 | * didn't, and it is RAM. This could be because: |
| 559 | * a) the entry is mapping the host kernel, or |
| 560 | * b) the guest used a large mapping which we're faking |
| 561 | * Either way, we need to satisfy the fault without |
| 562 | * invoking the guest. */ |
Hollis Blanchard | 58a9621 | 2009-01-03 16:23:01 -0600 | [diff] [blame] | 563 | kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index); |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 564 | kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 565 | r = RESUME_GUEST; |
| 566 | } else { |
| 567 | /* Guest has mapped and accessed a page which is not |
| 568 | * actually RAM. */ |
Hollis Blanchard | 475e7cd | 2009-01-03 16:23:00 -0600 | [diff] [blame] | 569 | vcpu->arch.paddr_accessed = gpaddr; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 570 | r = kvmppc_emulate_mmio(run, vcpu); |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 571 | kvmppc_account_exit(vcpu, MMIO_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 572 | } |
| 573 | |
| 574 | break; |
| 575 | } |
| 576 | |
| 577 | case BOOKE_INTERRUPT_ITLB_MISS: { |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 578 | unsigned long eaddr = vcpu->arch.pc; |
Hollis Blanchard | 8916861 | 2008-12-02 15:51:53 -0600 | [diff] [blame] | 579 | gpa_t gpaddr; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 580 | gfn_t gfn; |
Hollis Blanchard | 7924bd4 | 2008-12-02 15:51:55 -0600 | [diff] [blame] | 581 | int gtlb_index; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 582 | |
| 583 | r = RESUME_GUEST; |
| 584 | |
| 585 | /* Check the guest TLB. */ |
Hollis Blanchard | fa86b8d | 2009-01-03 16:23:03 -0600 | [diff] [blame] | 586 | gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr); |
Hollis Blanchard | 7924bd4 | 2008-12-02 15:51:55 -0600 | [diff] [blame] | 587 | if (gtlb_index < 0) { |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 588 | /* The guest didn't have a mapping for it. */ |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 589 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS); |
Hollis Blanchard | b52a638 | 2009-01-03 16:23:11 -0600 | [diff] [blame] | 590 | kvmppc_mmu_itlb_miss(vcpu); |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 591 | kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 592 | break; |
| 593 | } |
| 594 | |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 595 | kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 596 | |
Hollis Blanchard | be8d1ca | 2009-01-03 16:23:02 -0600 | [diff] [blame] | 597 | gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr); |
Hollis Blanchard | 8916861 | 2008-12-02 15:51:53 -0600 | [diff] [blame] | 598 | gfn = gpaddr >> PAGE_SHIFT; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 599 | |
| 600 | if (kvm_is_visible_gfn(vcpu->kvm, gfn)) { |
| 601 | /* The guest TLB had a mapping, but the shadow TLB |
| 602 | * didn't. This could be because: |
| 603 | * a) the entry is mapping the host kernel, or |
| 604 | * b) the guest used a large mapping which we're faking |
| 605 | * Either way, we need to satisfy the fault without |
| 606 | * invoking the guest. */ |
Hollis Blanchard | 58a9621 | 2009-01-03 16:23:01 -0600 | [diff] [blame] | 607 | kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 608 | } else { |
| 609 | /* Guest mapped and leaped at non-RAM! */ |
Hollis Blanchard | d4cf389 | 2008-11-05 09:36:23 -0600 | [diff] [blame] | 610 | kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | break; |
| 614 | } |
| 615 | |
Hollis Blanchard | 6a0ab73 | 2008-07-25 13:54:49 -0500 | [diff] [blame] | 616 | case BOOKE_INTERRUPT_DEBUG: { |
| 617 | u32 dbsr; |
| 618 | |
| 619 | vcpu->arch.pc = mfspr(SPRN_CSRR0); |
| 620 | |
| 621 | /* clear IAC events in DBSR register */ |
| 622 | dbsr = mfspr(SPRN_DBSR); |
| 623 | dbsr &= DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4; |
| 624 | mtspr(SPRN_DBSR, dbsr); |
| 625 | |
| 626 | run->exit_reason = KVM_EXIT_DEBUG; |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 627 | kvmppc_account_exit(vcpu, DEBUG_EXITS); |
Hollis Blanchard | 6a0ab73 | 2008-07-25 13:54:49 -0500 | [diff] [blame] | 628 | r = RESUME_HOST; |
| 629 | break; |
| 630 | } |
| 631 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 632 | default: |
| 633 | printk(KERN_EMERG "exit_nr %d\n", exit_nr); |
| 634 | BUG(); |
| 635 | } |
| 636 | |
| 637 | local_irq_disable(); |
| 638 | |
Scott Wood | 7e28e60e | 2011-11-08 18:23:20 -0600 | [diff] [blame] | 639 | kvmppc_core_prepare_to_enter(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 640 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 641 | if (!(r & RESUME_HOST)) { |
| 642 | /* To avoid clobbering exit_reason, only check for signals if |
| 643 | * we aren't already exiting to userspace for some other |
| 644 | * reason. */ |
| 645 | if (signal_pending(current)) { |
| 646 | run->exit_reason = KVM_EXIT_INTR; |
| 647 | r = (-EINTR << 2) | RESUME_HOST | (r & RESUME_FLAG_NV); |
Hollis Blanchard | 7b70159 | 2008-12-02 15:51:58 -0600 | [diff] [blame] | 648 | kvmppc_account_exit(vcpu, SIGNAL_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 649 | } |
| 650 | } |
| 651 | |
| 652 | return r; |
| 653 | } |
| 654 | |
| 655 | /* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */ |
| 656 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) |
| 657 | { |
Hollis Blanchard | 082decf | 2010-08-07 10:33:56 -0700 | [diff] [blame] | 658 | int i; |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 659 | int r; |
Hollis Blanchard | 082decf | 2010-08-07 10:33:56 -0700 | [diff] [blame] | 660 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 661 | vcpu->arch.pc = 0; |
Alexander Graf | 666e725 | 2010-07-29 14:47:43 +0200 | [diff] [blame] | 662 | vcpu->arch.shared->msr = 0; |
Scott Wood | ecee273 | 2011-06-14 18:34:29 -0500 | [diff] [blame] | 663 | vcpu->arch.shadow_msr = MSR_USER | MSR_DE | MSR_IS | MSR_DS; |
Scott Wood | b590497 | 2011-11-08 18:23:30 -0600 | [diff] [blame] | 664 | vcpu->arch.shared->pir = vcpu->vcpu_id; |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 665 | kvmppc_set_gpr(vcpu, 1, (16<<20) - 8); /* -8 for the callee-save LR slot */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 666 | |
Hollis Blanchard | 49dd2c4 | 2008-07-25 13:54:53 -0500 | [diff] [blame] | 667 | vcpu->arch.shadow_pid = 1; |
| 668 | |
Hollis Blanchard | 082decf | 2010-08-07 10:33:56 -0700 | [diff] [blame] | 669 | /* Eye-catching numbers so we know if the guest takes an interrupt |
| 670 | * before it's programmed its own IVPR/IVORs. */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 671 | vcpu->arch.ivpr = 0x55550000; |
Hollis Blanchard | 082decf | 2010-08-07 10:33:56 -0700 | [diff] [blame] | 672 | for (i = 0; i < BOOKE_IRQPRIO_MAX; i++) |
| 673 | vcpu->arch.ivor[i] = 0x7700 | i * 4; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 674 | |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 675 | kvmppc_init_timing_stats(vcpu); |
| 676 | |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 677 | r = kvmppc_core_vcpu_setup(vcpu); |
| 678 | kvmppc_sanity_check(vcpu); |
| 679 | return r; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 680 | } |
| 681 | |
| 682 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) |
| 683 | { |
| 684 | int i; |
| 685 | |
| 686 | regs->pc = vcpu->arch.pc; |
Alexander Graf | 992b5b2 | 2010-01-08 02:58:02 +0100 | [diff] [blame] | 687 | regs->cr = kvmppc_get_cr(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 688 | regs->ctr = vcpu->arch.ctr; |
| 689 | regs->lr = vcpu->arch.lr; |
Alexander Graf | 992b5b2 | 2010-01-08 02:58:02 +0100 | [diff] [blame] | 690 | regs->xer = kvmppc_get_xer(vcpu); |
Alexander Graf | 666e725 | 2010-07-29 14:47:43 +0200 | [diff] [blame] | 691 | regs->msr = vcpu->arch.shared->msr; |
Alexander Graf | de7906c | 2010-07-29 14:47:46 +0200 | [diff] [blame] | 692 | regs->srr0 = vcpu->arch.shared->srr0; |
| 693 | regs->srr1 = vcpu->arch.shared->srr1; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 694 | regs->pid = vcpu->arch.pid; |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 695 | regs->sprg0 = vcpu->arch.shared->sprg0; |
| 696 | regs->sprg1 = vcpu->arch.shared->sprg1; |
| 697 | regs->sprg2 = vcpu->arch.shared->sprg2; |
| 698 | regs->sprg3 = vcpu->arch.shared->sprg3; |
Scott Wood | b590497 | 2011-11-08 18:23:30 -0600 | [diff] [blame] | 699 | regs->sprg4 = vcpu->arch.shared->sprg4; |
| 700 | regs->sprg5 = vcpu->arch.shared->sprg5; |
| 701 | regs->sprg6 = vcpu->arch.shared->sprg6; |
| 702 | regs->sprg7 = vcpu->arch.shared->sprg7; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 703 | |
| 704 | for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 705 | regs->gpr[i] = kvmppc_get_gpr(vcpu, i); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 706 | |
| 707 | return 0; |
| 708 | } |
| 709 | |
| 710 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) |
| 711 | { |
| 712 | int i; |
| 713 | |
| 714 | vcpu->arch.pc = regs->pc; |
Alexander Graf | 992b5b2 | 2010-01-08 02:58:02 +0100 | [diff] [blame] | 715 | kvmppc_set_cr(vcpu, regs->cr); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 716 | vcpu->arch.ctr = regs->ctr; |
| 717 | vcpu->arch.lr = regs->lr; |
Alexander Graf | 992b5b2 | 2010-01-08 02:58:02 +0100 | [diff] [blame] | 718 | kvmppc_set_xer(vcpu, regs->xer); |
Hollis Blanchard | b8fd68a | 2008-11-05 09:36:20 -0600 | [diff] [blame] | 719 | kvmppc_set_msr(vcpu, regs->msr); |
Alexander Graf | de7906c | 2010-07-29 14:47:46 +0200 | [diff] [blame] | 720 | vcpu->arch.shared->srr0 = regs->srr0; |
| 721 | vcpu->arch.shared->srr1 = regs->srr1; |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 722 | kvmppc_set_pid(vcpu, regs->pid); |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 723 | vcpu->arch.shared->sprg0 = regs->sprg0; |
| 724 | vcpu->arch.shared->sprg1 = regs->sprg1; |
| 725 | vcpu->arch.shared->sprg2 = regs->sprg2; |
| 726 | vcpu->arch.shared->sprg3 = regs->sprg3; |
Scott Wood | b590497 | 2011-11-08 18:23:30 -0600 | [diff] [blame] | 727 | vcpu->arch.shared->sprg4 = regs->sprg4; |
| 728 | vcpu->arch.shared->sprg5 = regs->sprg5; |
| 729 | vcpu->arch.shared->sprg6 = regs->sprg6; |
| 730 | vcpu->arch.shared->sprg7 = regs->sprg7; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 731 | |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 732 | for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) |
| 733 | kvmppc_set_gpr(vcpu, i, regs->gpr[i]); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 734 | |
| 735 | return 0; |
| 736 | } |
| 737 | |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 738 | static void get_sregs_base(struct kvm_vcpu *vcpu, |
| 739 | struct kvm_sregs *sregs) |
| 740 | { |
| 741 | u64 tb = get_tb(); |
| 742 | |
| 743 | sregs->u.e.features |= KVM_SREGS_E_BASE; |
| 744 | |
| 745 | sregs->u.e.csrr0 = vcpu->arch.csrr0; |
| 746 | sregs->u.e.csrr1 = vcpu->arch.csrr1; |
| 747 | sregs->u.e.mcsr = vcpu->arch.mcsr; |
Scott Wood | b590497 | 2011-11-08 18:23:30 -0600 | [diff] [blame] | 748 | sregs->u.e.esr = vcpu->arch.shared->esr; |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 749 | sregs->u.e.dear = vcpu->arch.shared->dar; |
| 750 | sregs->u.e.tsr = vcpu->arch.tsr; |
| 751 | sregs->u.e.tcr = vcpu->arch.tcr; |
| 752 | sregs->u.e.dec = kvmppc_get_dec(vcpu, tb); |
| 753 | sregs->u.e.tb = tb; |
| 754 | sregs->u.e.vrsave = vcpu->arch.vrsave; |
| 755 | } |
| 756 | |
| 757 | static int set_sregs_base(struct kvm_vcpu *vcpu, |
| 758 | struct kvm_sregs *sregs) |
| 759 | { |
| 760 | if (!(sregs->u.e.features & KVM_SREGS_E_BASE)) |
| 761 | return 0; |
| 762 | |
| 763 | vcpu->arch.csrr0 = sregs->u.e.csrr0; |
| 764 | vcpu->arch.csrr1 = sregs->u.e.csrr1; |
| 765 | vcpu->arch.mcsr = sregs->u.e.mcsr; |
Scott Wood | b590497 | 2011-11-08 18:23:30 -0600 | [diff] [blame] | 766 | vcpu->arch.shared->esr = sregs->u.e.esr; |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 767 | vcpu->arch.shared->dar = sregs->u.e.dear; |
| 768 | vcpu->arch.vrsave = sregs->u.e.vrsave; |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 769 | kvmppc_set_tcr(vcpu, sregs->u.e.tcr); |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 770 | |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 771 | if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC) { |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 772 | vcpu->arch.dec = sregs->u.e.dec; |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 773 | kvmppc_emulate_dec(vcpu); |
| 774 | } |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 775 | |
| 776 | if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR) { |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 777 | vcpu->arch.tsr = sregs->u.e.tsr; |
| 778 | update_timer_ints(vcpu); |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 779 | } |
| 780 | |
| 781 | return 0; |
| 782 | } |
| 783 | |
| 784 | static void get_sregs_arch206(struct kvm_vcpu *vcpu, |
| 785 | struct kvm_sregs *sregs) |
| 786 | { |
| 787 | sregs->u.e.features |= KVM_SREGS_E_ARCH206; |
| 788 | |
Scott Wood | 841741f | 2011-09-02 17:39:37 -0500 | [diff] [blame] | 789 | sregs->u.e.pir = vcpu->vcpu_id; |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 790 | sregs->u.e.mcsrr0 = vcpu->arch.mcsrr0; |
| 791 | sregs->u.e.mcsrr1 = vcpu->arch.mcsrr1; |
| 792 | sregs->u.e.decar = vcpu->arch.decar; |
| 793 | sregs->u.e.ivpr = vcpu->arch.ivpr; |
| 794 | } |
| 795 | |
| 796 | static int set_sregs_arch206(struct kvm_vcpu *vcpu, |
| 797 | struct kvm_sregs *sregs) |
| 798 | { |
| 799 | if (!(sregs->u.e.features & KVM_SREGS_E_ARCH206)) |
| 800 | return 0; |
| 801 | |
Scott Wood | 841741f | 2011-09-02 17:39:37 -0500 | [diff] [blame] | 802 | if (sregs->u.e.pir != vcpu->vcpu_id) |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 803 | return -EINVAL; |
| 804 | |
| 805 | vcpu->arch.mcsrr0 = sregs->u.e.mcsrr0; |
| 806 | vcpu->arch.mcsrr1 = sregs->u.e.mcsrr1; |
| 807 | vcpu->arch.decar = sregs->u.e.decar; |
| 808 | vcpu->arch.ivpr = sregs->u.e.ivpr; |
| 809 | |
| 810 | return 0; |
| 811 | } |
| 812 | |
| 813 | void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) |
| 814 | { |
| 815 | sregs->u.e.features |= KVM_SREGS_E_IVOR; |
| 816 | |
| 817 | sregs->u.e.ivor_low[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL]; |
| 818 | sregs->u.e.ivor_low[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK]; |
| 819 | sregs->u.e.ivor_low[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]; |
| 820 | sregs->u.e.ivor_low[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE]; |
| 821 | sregs->u.e.ivor_low[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL]; |
| 822 | sregs->u.e.ivor_low[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT]; |
| 823 | sregs->u.e.ivor_low[6] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM]; |
| 824 | sregs->u.e.ivor_low[7] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL]; |
| 825 | sregs->u.e.ivor_low[8] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]; |
| 826 | sregs->u.e.ivor_low[9] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL]; |
| 827 | sregs->u.e.ivor_low[10] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER]; |
| 828 | sregs->u.e.ivor_low[11] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT]; |
| 829 | sregs->u.e.ivor_low[12] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG]; |
| 830 | sregs->u.e.ivor_low[13] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS]; |
| 831 | sregs->u.e.ivor_low[14] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS]; |
| 832 | sregs->u.e.ivor_low[15] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG]; |
| 833 | } |
| 834 | |
| 835 | int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) |
| 836 | { |
| 837 | if (!(sregs->u.e.features & KVM_SREGS_E_IVOR)) |
| 838 | return 0; |
| 839 | |
| 840 | vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = sregs->u.e.ivor_low[0]; |
| 841 | vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = sregs->u.e.ivor_low[1]; |
| 842 | vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = sregs->u.e.ivor_low[2]; |
| 843 | vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = sregs->u.e.ivor_low[3]; |
| 844 | vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = sregs->u.e.ivor_low[4]; |
| 845 | vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = sregs->u.e.ivor_low[5]; |
| 846 | vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = sregs->u.e.ivor_low[6]; |
| 847 | vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = sregs->u.e.ivor_low[7]; |
| 848 | vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = sregs->u.e.ivor_low[8]; |
| 849 | vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = sregs->u.e.ivor_low[9]; |
| 850 | vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = sregs->u.e.ivor_low[10]; |
| 851 | vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = sregs->u.e.ivor_low[11]; |
| 852 | vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = sregs->u.e.ivor_low[12]; |
| 853 | vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = sregs->u.e.ivor_low[13]; |
| 854 | vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = sregs->u.e.ivor_low[14]; |
| 855 | vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = sregs->u.e.ivor_low[15]; |
| 856 | |
| 857 | return 0; |
| 858 | } |
| 859 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 860 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, |
| 861 | struct kvm_sregs *sregs) |
| 862 | { |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 863 | sregs->pvr = vcpu->arch.pvr; |
| 864 | |
| 865 | get_sregs_base(vcpu, sregs); |
| 866 | get_sregs_arch206(vcpu, sregs); |
| 867 | kvmppc_core_get_sregs(vcpu, sregs); |
| 868 | return 0; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 869 | } |
| 870 | |
| 871 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, |
| 872 | struct kvm_sregs *sregs) |
| 873 | { |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 874 | int ret; |
| 875 | |
| 876 | if (vcpu->arch.pvr != sregs->pvr) |
| 877 | return -EINVAL; |
| 878 | |
| 879 | ret = set_sregs_base(vcpu, sregs); |
| 880 | if (ret < 0) |
| 881 | return ret; |
| 882 | |
| 883 | ret = set_sregs_arch206(vcpu, sregs); |
| 884 | if (ret < 0) |
| 885 | return ret; |
| 886 | |
| 887 | return kvmppc_core_set_sregs(vcpu, sregs); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 888 | } |
| 889 | |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 890 | int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) |
| 891 | { |
| 892 | return -EINVAL; |
| 893 | } |
| 894 | |
| 895 | int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) |
| 896 | { |
| 897 | return -EINVAL; |
| 898 | } |
| 899 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 900 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) |
| 901 | { |
| 902 | return -ENOTSUPP; |
| 903 | } |
| 904 | |
| 905 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) |
| 906 | { |
| 907 | return -ENOTSUPP; |
| 908 | } |
| 909 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 910 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
| 911 | struct kvm_translation *tr) |
| 912 | { |
Avi Kivity | 98001d8 | 2010-05-13 11:05:49 +0300 | [diff] [blame] | 913 | int r; |
| 914 | |
Avi Kivity | 98001d8 | 2010-05-13 11:05:49 +0300 | [diff] [blame] | 915 | r = kvmppc_core_vcpu_translate(vcpu, tr); |
Avi Kivity | 98001d8 | 2010-05-13 11:05:49 +0300 | [diff] [blame] | 916 | return r; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 917 | } |
Hollis Blanchard | d9fbd03 | 2008-11-05 09:36:13 -0600 | [diff] [blame] | 918 | |
Alexander Graf | 4e75575 | 2009-10-30 05:47:01 +0000 | [diff] [blame] | 919 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) |
| 920 | { |
| 921 | return -ENOTSUPP; |
| 922 | } |
| 923 | |
Paul Mackerras | f9e0554 | 2011-06-29 00:19:22 +0000 | [diff] [blame] | 924 | int kvmppc_core_prepare_memory_region(struct kvm *kvm, |
| 925 | struct kvm_userspace_memory_region *mem) |
| 926 | { |
| 927 | return 0; |
| 928 | } |
| 929 | |
| 930 | void kvmppc_core_commit_memory_region(struct kvm *kvm, |
| 931 | struct kvm_userspace_memory_region *mem) |
| 932 | { |
| 933 | } |
| 934 | |
| 935 | int kvmppc_core_init_vm(struct kvm *kvm) |
| 936 | { |
| 937 | return 0; |
| 938 | } |
| 939 | |
| 940 | void kvmppc_core_destroy_vm(struct kvm *kvm) |
| 941 | { |
| 942 | } |
| 943 | |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 944 | void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr) |
| 945 | { |
| 946 | vcpu->arch.tcr = new_tcr; |
| 947 | update_timer_ints(vcpu); |
| 948 | } |
| 949 | |
| 950 | void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits) |
| 951 | { |
| 952 | set_bits(tsr_bits, &vcpu->arch.tsr); |
| 953 | smp_wmb(); |
| 954 | kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu); |
| 955 | kvm_vcpu_kick(vcpu); |
| 956 | } |
| 957 | |
| 958 | void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits) |
| 959 | { |
| 960 | clear_bits(tsr_bits, &vcpu->arch.tsr); |
| 961 | update_timer_ints(vcpu); |
| 962 | } |
| 963 | |
| 964 | void kvmppc_decrementer_func(unsigned long data) |
| 965 | { |
| 966 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; |
| 967 | |
| 968 | kvmppc_set_tsr_bits(vcpu, TSR_DIS); |
| 969 | } |
| 970 | |
Scott Wood | 94fa9d9 | 2011-12-20 15:34:22 +0000 | [diff] [blame^] | 971 | void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
| 972 | { |
| 973 | } |
| 974 | |
| 975 | void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu) |
| 976 | { |
| 977 | } |
| 978 | |
Stephen Rothwell | 2986b8c | 2009-06-02 11:46:14 +1000 | [diff] [blame] | 979 | int __init kvmppc_booke_init(void) |
Hollis Blanchard | d9fbd03 | 2008-11-05 09:36:13 -0600 | [diff] [blame] | 980 | { |
| 981 | unsigned long ivor[16]; |
| 982 | unsigned long max_ivor = 0; |
| 983 | int i; |
| 984 | |
| 985 | /* We install our own exception handlers by hijacking IVPR. IVPR must |
| 986 | * be 16-bit aligned, so we need a 64KB allocation. */ |
| 987 | kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL | __GFP_ZERO, |
| 988 | VCPU_SIZE_ORDER); |
| 989 | if (!kvmppc_booke_handlers) |
| 990 | return -ENOMEM; |
| 991 | |
| 992 | /* XXX make sure our handlers are smaller than Linux's */ |
| 993 | |
| 994 | /* Copy our interrupt handlers to match host IVORs. That way we don't |
| 995 | * have to swap the IVORs on every guest/host transition. */ |
| 996 | ivor[0] = mfspr(SPRN_IVOR0); |
| 997 | ivor[1] = mfspr(SPRN_IVOR1); |
| 998 | ivor[2] = mfspr(SPRN_IVOR2); |
| 999 | ivor[3] = mfspr(SPRN_IVOR3); |
| 1000 | ivor[4] = mfspr(SPRN_IVOR4); |
| 1001 | ivor[5] = mfspr(SPRN_IVOR5); |
| 1002 | ivor[6] = mfspr(SPRN_IVOR6); |
| 1003 | ivor[7] = mfspr(SPRN_IVOR7); |
| 1004 | ivor[8] = mfspr(SPRN_IVOR8); |
| 1005 | ivor[9] = mfspr(SPRN_IVOR9); |
| 1006 | ivor[10] = mfspr(SPRN_IVOR10); |
| 1007 | ivor[11] = mfspr(SPRN_IVOR11); |
| 1008 | ivor[12] = mfspr(SPRN_IVOR12); |
| 1009 | ivor[13] = mfspr(SPRN_IVOR13); |
| 1010 | ivor[14] = mfspr(SPRN_IVOR14); |
| 1011 | ivor[15] = mfspr(SPRN_IVOR15); |
| 1012 | |
| 1013 | for (i = 0; i < 16; i++) { |
| 1014 | if (ivor[i] > max_ivor) |
| 1015 | max_ivor = ivor[i]; |
| 1016 | |
| 1017 | memcpy((void *)kvmppc_booke_handlers + ivor[i], |
| 1018 | kvmppc_handlers_start + i * kvmppc_handler_len, |
| 1019 | kvmppc_handler_len); |
| 1020 | } |
| 1021 | flush_icache_range(kvmppc_booke_handlers, |
| 1022 | kvmppc_booke_handlers + max_ivor + kvmppc_handler_len); |
| 1023 | |
Hollis Blanchard | db93f57 | 2008-11-05 09:36:18 -0600 | [diff] [blame] | 1024 | return 0; |
Hollis Blanchard | d9fbd03 | 2008-11-05 09:36:13 -0600 | [diff] [blame] | 1025 | } |
| 1026 | |
Hollis Blanchard | db93f57 | 2008-11-05 09:36:18 -0600 | [diff] [blame] | 1027 | void __exit kvmppc_booke_exit(void) |
Hollis Blanchard | d9fbd03 | 2008-11-05 09:36:13 -0600 | [diff] [blame] | 1028 | { |
| 1029 | free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER); |
| 1030 | kvm_exit(); |
| 1031 | } |