xen-vtx-unstable

annotate xen/arch/x86/vmx_vmcs.c @ 5414:2814216d7f48

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bitkeeper revision 1.1705.1.4 (42a93b72dCp-0yWsUC34zD8h-L-QLg)

Adding the VMCS encodings as per "Intel Virtualization Technology
Specification for the IA-32 Intel Architecture", and removing hard
coded values. Code cleanup & preparation for 64bit VMX guest support.

Signed-Off-By: Chengyuan Li <chengyuan.li@intel.com>
Signed-Off-By: Yunhong Jiang <hunhong.jiang@intel.com>
Signed-Off-By: Jun Nakajima <jun.nakajima@intel.com>
Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com>
author kaf24@firebug.cl.cam.ac.uk
date Fri Jun 10 07:04:18 2005 +0000 (2005-06-10)
parents 849b58da37b7
children d44caae57112
rev   line source
iap10@3290 1 /*
iap10@3290 2 * vmx_vmcs.c: VMCS management
iap10@3290 3 * Copyright (c) 2004, Intel Corporation.
iap10@3290 4 *
iap10@3290 5 * This program is free software; you can redistribute it and/or modify it
iap10@3290 6 * under the terms and conditions of the GNU General Public License,
iap10@3290 7 * version 2, as published by the Free Software Foundation.
iap10@3290 8 *
iap10@3290 9 * This program is distributed in the hope it will be useful, but WITHOUT
iap10@3290 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
iap10@3290 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
iap10@3290 12 * more details.
iap10@3290 13 *
iap10@3290 14 * You should have received a copy of the GNU General Public License along with
iap10@3290 15 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
iap10@3290 16 * Place - Suite 330, Boston, MA 02111-1307 USA.
iap10@3290 17 *
iap10@3290 18 */
iap10@3290 19
iap10@3290 20 #include <xen/config.h>
iap10@3290 21 #include <xen/init.h>
iap10@3290 22 #include <xen/mm.h>
iap10@3290 23 #include <xen/lib.h>
iap10@3290 24 #include <xen/errno.h>
kaf24@5356 25 #include <xen/domain_page.h>
cl349@5291 26 #include <asm/current.h>
iap10@3290 27 #include <asm/cpufeature.h>
iap10@3290 28 #include <asm/processor.h>
iap10@3290 29 #include <asm/msr.h>
iap10@3290 30 #include <asm/vmx.h>
iap10@3290 31 #include <xen/event.h>
iap10@3290 32 #include <xen/kernel.h>
iap10@3290 33 #include <public/io/ioreq.h>
iap10@3290 34
mafetter@3717 35 #ifdef CONFIG_VMX
mafetter@3717 36
iap10@3290 37 struct vmcs_struct *alloc_vmcs(void)
iap10@3290 38 {
iap10@3290 39 struct vmcs_struct *vmcs;
kaf24@5059 40 u32 vmx_msr_low, vmx_msr_high;
iap10@3290 41
kaf24@5059 42 rdmsr(MSR_IA32_VMX_BASIC_MSR, vmx_msr_low, vmx_msr_high);
kaf24@5059 43 vmcs_size = vmx_msr_high & 0x1fff;
kaf24@5398 44 vmcs = alloc_xenheap_pages(get_order(vmcs_size));
kaf24@5398 45 memset((char *)vmcs, 0, vmcs_size); /* don't remove this */
iap10@3290 46
kaf24@5059 47 vmcs->vmcs_revision_id = vmx_msr_low;
iap10@3290 48 return vmcs;
iap10@3290 49 }
iap10@3290 50
iap10@3290 51 void free_vmcs(struct vmcs_struct *vmcs)
iap10@3290 52 {
iap10@3290 53 int order;
iap10@3290 54
iap10@3290 55 order = (vmcs_size >> PAGE_SHIFT) - 1;
kaf24@5398 56 free_xenheap_pages(vmcs, order);
iap10@3290 57 }
iap10@3290 58
iap10@3290 59 static inline int construct_vmcs_controls(void)
iap10@3290 60 {
iap10@3290 61 int error = 0;
iap10@3290 62
iap10@3290 63 error |= __vmwrite(PIN_BASED_VM_EXEC_CONTROL,
iap10@3290 64 MONITOR_PIN_BASED_EXEC_CONTROLS);
iap10@3290 65
iap10@3290 66 error |= __vmwrite(CPU_BASED_VM_EXEC_CONTROL,
iap10@3290 67 MONITOR_CPU_BASED_EXEC_CONTROLS);
iap10@3290 68
iap10@3290 69 error |= __vmwrite(VM_EXIT_CONTROLS, MONITOR_VM_EXIT_CONTROLS);
iap10@3290 70 error |= __vmwrite(VM_ENTRY_CONTROLS, MONITOR_VM_ENTRY_CONTROLS);
iap10@3290 71
iap10@3290 72 return error;
iap10@3290 73 }
iap10@3290 74
iap10@3290 75 #define GUEST_SEGMENT_LIMIT 0xffffffff
iap10@3290 76 #define HOST_SEGMENT_LIMIT 0xffffffff
iap10@3290 77
iap10@3290 78 struct host_execution_env {
iap10@3290 79 /* selectors */
iap10@3290 80 unsigned short ldtr_selector;
iap10@3290 81 unsigned short tr_selector;
iap10@3290 82 unsigned short ds_selector;
iap10@3290 83 unsigned short cs_selector;
iap10@3290 84 /* limits */
iap10@3290 85 unsigned short gdtr_limit;
iap10@3290 86 unsigned short ldtr_limit;
iap10@3290 87 unsigned short idtr_limit;
iap10@3290 88 unsigned short tr_limit;
iap10@3290 89 /* base */
iap10@3290 90 unsigned long gdtr_base;
iap10@3290 91 unsigned long ldtr_base;
iap10@3290 92 unsigned long idtr_base;
iap10@3290 93 unsigned long tr_base;
iap10@3290 94 unsigned long ds_base;
iap10@3290 95 unsigned long cs_base;
iap10@3290 96 /* control registers */
iap10@3290 97 unsigned long cr3;
iap10@3290 98 unsigned long cr0;
iap10@3290 99 unsigned long cr4;
iap10@3290 100 unsigned long dr7;
iap10@3290 101 };
iap10@3290 102
iap10@3290 103 #define round_pgdown(_p) ((_p)&PAGE_MASK) /* coped from domain.c */
iap10@3290 104
kaf24@5289 105 int vmx_setup_platform(struct vcpu *d, struct cpu_user_regs *regs)
iap10@3290 106 {
iap10@3290 107 int i;
iap10@3290 108 unsigned int n;
iap10@3290 109 unsigned long *p, mpfn, offset, addr;
iap10@3290 110 struct e820entry *e820p;
iap10@3290 111 unsigned long gpfn = 0;
iap10@3290 112
kaf24@4683 113 regs->ebx = 0; /* Linux expects ebx to be 0 for boot proc */
iap10@3290 114
kaf24@4683 115 n = regs->ecx;
iap10@3290 116 if (n > 32) {
maf46@3855 117 VMX_DBG_LOG(DBG_LEVEL_1, "Too many e820 entries: %d", n);
iap10@3290 118 return -1;
iap10@3290 119 }
iap10@3290 120
kaf24@4683 121 addr = regs->edi;
iap10@3290 122 offset = (addr & ~PAGE_MASK);
iap10@3290 123 addr = round_pgdown(addr);
kaf24@5356 124
iap10@3707 125 mpfn = phys_to_machine_mapping(addr >> PAGE_SHIFT);
kaf24@5356 126 p = map_domain_page(mpfn);
iap10@3290 127
iap10@3290 128 e820p = (struct e820entry *) ((unsigned long) p + offset);
iap10@3290 129
maf46@3880 130 #ifndef NDEBUG
maf46@3880 131 print_e820_memory_map(e820p, n);
maf46@3880 132 #endif
maf46@3880 133
kaf24@5356 134 for ( i = 0; i < n; i++ )
kaf24@5356 135 {
kaf24@5356 136 if ( e820p[i].type == E820_SHARED_PAGE )
kaf24@5356 137 {
iap10@3290 138 gpfn = (e820p[i].addr >> PAGE_SHIFT);
iap10@3290 139 break;
iap10@3290 140 }
iap10@3290 141 }
iap10@3290 142
kaf24@5356 143 if ( gpfn == 0 )
kaf24@5356 144 {
kaf24@5356 145 unmap_domain_page(p);
iap10@3290 146 return -1;
iap10@3290 147 }
iap10@3290 148
kaf24@5356 149 unmap_domain_page(p);
iap10@3748 150
iap10@3748 151 /* Initialise shared page */
kaf24@5356 152 mpfn = phys_to_machine_mapping(gpfn);
kaf24@5356 153 p = map_domain_page(mpfn);
iap10@3748 154 memset(p, 0, PAGE_SIZE);
kaf24@5356 155 d->arch.arch_vmx.vmx_platform.shared_page_va = (unsigned long)p;
iap10@3290 156
iap10@3290 157 return 0;
iap10@3290 158 }
iap10@3290 159
kaf24@5289 160 void vmx_do_launch(struct vcpu *v)
iap10@3290 161 {
iap10@3290 162 /* Update CR3, GDT, LDT, TR */
iap10@3290 163 unsigned int tr, cpu, error = 0;
iap10@3290 164 struct host_execution_env host_env;
iap10@3290 165 struct Xgt_desc_struct desc;
kaf24@4633 166 unsigned long pfn = 0;
iap10@3290 167 struct pfn_info *page;
kaf24@4923 168 struct cpu_user_regs *regs = guest_cpu_user_regs();
iap10@3290 169
cl349@4856 170 vmx_stts();
kaf24@5289 171 set_bit(_VCPUF_guest_stts, &v->vcpu_flags);
cl349@4856 172
kaf24@4633 173 cpu = smp_processor_id();
iap10@3290 174
iap10@3290 175 page = (struct pfn_info *) alloc_domheap_page(NULL);
iap10@3290 176 pfn = (unsigned long) (page - frame_table);
iap10@3290 177
kaf24@5289 178 vmx_setup_platform(v, regs);
iap10@3290 179
arun@4585 180 __asm__ __volatile__ ("sgdt (%0) \n" :: "a"(&desc) : "memory");
iap10@3290 181 host_env.gdtr_limit = desc.size;
iap10@3290 182 host_env.gdtr_base = desc.address;
iap10@3290 183
iap10@3290 184 error |= __vmwrite(HOST_GDTR_BASE, host_env.gdtr_base);
iap10@3290 185
iap10@3290 186 error |= __vmwrite(GUEST_LDTR_SELECTOR, 0);
iap10@3290 187 error |= __vmwrite(GUEST_LDTR_BASE, 0);
iap10@3290 188 error |= __vmwrite(GUEST_LDTR_LIMIT, 0);
iap10@3290 189
arun@4585 190 __asm__ __volatile__ ("str (%0) \n" :: "a"(&tr) : "memory");
iap10@3290 191 host_env.tr_selector = tr;
iap10@3290 192 host_env.tr_limit = sizeof(struct tss_struct);
iap10@3290 193 host_env.tr_base = (unsigned long) &init_tss[cpu];
iap10@3290 194
iap10@3290 195 error |= __vmwrite(HOST_TR_SELECTOR, host_env.tr_selector);
iap10@3290 196 error |= __vmwrite(HOST_TR_BASE, host_env.tr_base);
iap10@3290 197 error |= __vmwrite(GUEST_TR_BASE, 0);
iap10@3290 198 error |= __vmwrite(GUEST_TR_LIMIT, 0xff);
iap10@3290 199
kaf24@5289 200 __vmwrite(GUEST_CR3, pagetable_get_paddr(v->arch.guest_table));
kaf24@5289 201 __vmwrite(HOST_CR3, pagetable_get_paddr(v->arch.monitor_table));
kaf24@5414 202 __vmwrite(HOST_RSP, (unsigned long)get_stack_bottom());
iap10@3290 203
kaf24@5289 204 v->arch.schedule_tail = arch_vmx_do_resume;
iap10@3290 205 }
iap10@3290 206
iap10@3290 207 /*
iap10@3290 208 * Initially set the same environement as host.
iap10@3290 209 */
iap10@3290 210 static inline int
kaf24@4683 211 construct_init_vmcs_guest(struct cpu_user_regs *regs,
kaf24@4683 212 struct vcpu_guest_context *ctxt,
iap10@3290 213 struct host_execution_env *host_env)
iap10@3290 214 {
iap10@3290 215 int error = 0;
iap10@3290 216 union vmcs_arbytes arbytes;
iap10@3290 217 unsigned long dr7;
iap10@3290 218 unsigned long eflags, shadow_cr;
iap10@3290 219
iap10@3290 220 /* MSR */
iap10@3290 221 error |= __vmwrite(VM_EXIT_MSR_LOAD_ADDR, 0);
iap10@3290 222 error |= __vmwrite(VM_EXIT_MSR_STORE_ADDR, 0);
iap10@3290 223
iap10@3290 224 error |= __vmwrite(VM_EXIT_MSR_STORE_COUNT, 0);
iap10@3290 225 error |= __vmwrite(VM_EXIT_MSR_LOAD_COUNT, 0);
iap10@3290 226 error |= __vmwrite(VM_ENTRY_MSR_LOAD_COUNT, 0);
iap10@3290 227 /* interrupt */
iap10@3290 228 error |= __vmwrite(VM_ENTRY_INTR_INFO_FIELD, 0);
iap10@3290 229 /* mask */
iap10@3290 230 error |= __vmwrite(CR0_GUEST_HOST_MASK, 0xffffffff);
iap10@3290 231 error |= __vmwrite(CR4_GUEST_HOST_MASK, 0xffffffff);
iap10@3290 232
iap10@3290 233 error |= __vmwrite(PAGE_FAULT_ERROR_CODE_MASK, 0);
iap10@3290 234 error |= __vmwrite(PAGE_FAULT_ERROR_CODE_MATCH, 0);
iap10@3290 235
iap10@3290 236 /* TSC */
iap10@3290 237 error |= __vmwrite(TSC_OFFSET, 0);
iap10@3290 238 error |= __vmwrite(CR3_TARGET_COUNT, 0);
iap10@3290 239
iap10@3290 240 /* Guest Selectors */
kaf24@4683 241 error |= __vmwrite(GUEST_CS_SELECTOR, regs->cs);
kaf24@4683 242 error |= __vmwrite(GUEST_ES_SELECTOR, regs->es);
kaf24@4683 243 error |= __vmwrite(GUEST_SS_SELECTOR, regs->ss);
kaf24@4683 244 error |= __vmwrite(GUEST_DS_SELECTOR, regs->ds);
kaf24@4683 245 error |= __vmwrite(GUEST_FS_SELECTOR, regs->fs);
kaf24@4683 246 error |= __vmwrite(GUEST_GS_SELECTOR, regs->gs);
iap10@3290 247
iap10@3290 248 /* Guest segment Limits */
iap10@3290 249 error |= __vmwrite(GUEST_CS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 250 error |= __vmwrite(GUEST_ES_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 251 error |= __vmwrite(GUEST_SS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 252 error |= __vmwrite(GUEST_DS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 253 error |= __vmwrite(GUEST_FS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 254 error |= __vmwrite(GUEST_GS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 255
iap10@3290 256 error |= __vmwrite(GUEST_IDTR_LIMIT, host_env->idtr_limit);
iap10@3290 257
iap10@3290 258 /* AR bytes */
iap10@3290 259 arbytes.bytes = 0;
iap10@3290 260 arbytes.fields.seg_type = 0x3; /* type = 3 */
iap10@3290 261 arbytes.fields.s = 1; /* code or data, i.e. not system */
iap10@3290 262 arbytes.fields.dpl = 0; /* DPL = 3 */
iap10@3290 263 arbytes.fields.p = 1; /* segment present */
iap10@3290 264 arbytes.fields.default_ops_size = 1; /* 32-bit */
iap10@3290 265 arbytes.fields.g = 1;
iap10@3290 266 arbytes.fields.null_bit = 0; /* not null */
iap10@3290 267
iap10@3290 268 error |= __vmwrite(GUEST_ES_AR_BYTES, arbytes.bytes);
iap10@3290 269 error |= __vmwrite(GUEST_SS_AR_BYTES, arbytes.bytes);
iap10@3290 270 error |= __vmwrite(GUEST_DS_AR_BYTES, arbytes.bytes);
iap10@3290 271 error |= __vmwrite(GUEST_FS_AR_BYTES, arbytes.bytes);
iap10@3290 272 error |= __vmwrite(GUEST_GS_AR_BYTES, arbytes.bytes);
iap10@3290 273
iap10@3290 274 arbytes.fields.seg_type = 0xb; /* type = 0xb */
iap10@3290 275 error |= __vmwrite(GUEST_CS_AR_BYTES, arbytes.bytes);
iap10@3290 276
kaf24@4683 277 error |= __vmwrite(GUEST_GDTR_BASE, regs->edx);
kaf24@4683 278 regs->edx = 0;
kaf24@4683 279 error |= __vmwrite(GUEST_GDTR_LIMIT, regs->eax);
kaf24@4683 280 regs->eax = 0;
iap10@3290 281
iap10@3290 282 arbytes.fields.s = 0; /* not code or data segement */
iap10@3290 283 arbytes.fields.seg_type = 0x2; /* LTD */
iap10@3290 284 arbytes.fields.default_ops_size = 0; /* 16-bit */
iap10@3290 285 arbytes.fields.g = 0;
iap10@3290 286 error |= __vmwrite(GUEST_LDTR_AR_BYTES, arbytes.bytes);
iap10@3290 287
iap10@3290 288 arbytes.fields.seg_type = 0xb; /* 32-bit TSS (busy) */
iap10@3290 289 error |= __vmwrite(GUEST_TR_AR_BYTES, arbytes.bytes);
iap10@3290 290
iap10@3290 291 error |= __vmwrite(GUEST_CR0, host_env->cr0); /* same CR0 */
iap10@3290 292
iap10@3290 293 /* Initally PG, PE are not set*/
iap10@3290 294 shadow_cr = host_env->cr0;
arun@5186 295 shadow_cr &= ~X86_CR0_PG;
iap10@3290 296 error |= __vmwrite(CR0_READ_SHADOW, shadow_cr);
kaf24@3755 297 /* CR3 is set in vmx_final_setup_guest */
iap10@3290 298 error |= __vmwrite(GUEST_CR4, host_env->cr4);
iap10@3290 299 shadow_cr = host_env->cr4;
iap10@3290 300 shadow_cr &= ~(X86_CR4_PGE | X86_CR4_VMXE);
iap10@3290 301 error |= __vmwrite(CR4_READ_SHADOW, shadow_cr);
iap10@3290 302
iap10@3290 303 error |= __vmwrite(GUEST_ES_BASE, host_env->ds_base);
iap10@3290 304 error |= __vmwrite(GUEST_CS_BASE, host_env->cs_base);
iap10@3290 305 error |= __vmwrite(GUEST_SS_BASE, host_env->ds_base);
iap10@3290 306 error |= __vmwrite(GUEST_DS_BASE, host_env->ds_base);
iap10@3290 307 error |= __vmwrite(GUEST_FS_BASE, host_env->ds_base);
iap10@3290 308 error |= __vmwrite(GUEST_GS_BASE, host_env->ds_base);
iap10@3290 309 error |= __vmwrite(GUEST_IDTR_BASE, host_env->idtr_base);
iap10@3290 310
kaf24@5414 311 error |= __vmwrite(GUEST_RSP, regs->esp);
kaf24@5414 312 error |= __vmwrite(GUEST_RIP, regs->eip);
iap10@3290 313
kaf24@4683 314 eflags = regs->eflags & ~VMCS_EFLAGS_RESERVED_0; /* clear 0s */
iap10@3290 315 eflags |= VMCS_EFLAGS_RESERVED_1; /* set 1s */
iap10@3290 316
kaf24@5414 317 error |= __vmwrite(GUEST_RFLAGS, eflags);
iap10@3290 318
iap10@3290 319 error |= __vmwrite(GUEST_INTERRUPTIBILITY_INFO, 0);
iap10@3290 320 __asm__ __volatile__ ("mov %%dr7, %0\n" : "=r" (dr7));
iap10@3290 321 error |= __vmwrite(GUEST_DR7, dr7);
kaf24@5414 322 error |= __vmwrite(VMCS_LINK_POINTER, 0xffffffff);
kaf24@5414 323 error |= __vmwrite(VMCS_LINK_POINTER_HIGH, 0xffffffff);
iap10@3290 324
iap10@3290 325 return error;
iap10@3290 326 }
iap10@3290 327
iap10@3290 328 static inline int construct_vmcs_host(struct host_execution_env *host_env)
iap10@3290 329 {
iap10@3290 330 int error = 0;
iap10@3290 331 unsigned long crn;
iap10@3290 332 struct Xgt_desc_struct desc;
iap10@3290 333
iap10@3290 334 /* Host Selectors */
iap10@3290 335 host_env->ds_selector = __HYPERVISOR_DS;
iap10@3290 336 error |= __vmwrite(HOST_ES_SELECTOR, host_env->ds_selector);
iap10@3290 337 error |= __vmwrite(HOST_SS_SELECTOR, host_env->ds_selector);
iap10@3290 338 error |= __vmwrite(HOST_DS_SELECTOR, host_env->ds_selector);
iap10@3290 339 error |= __vmwrite(HOST_FS_SELECTOR, host_env->ds_selector);
iap10@3290 340 error |= __vmwrite(HOST_GS_SELECTOR, host_env->ds_selector);
iap10@3290 341
iap10@3290 342 host_env->cs_selector = __HYPERVISOR_CS;
iap10@3290 343 error |= __vmwrite(HOST_CS_SELECTOR, host_env->cs_selector);
iap10@3290 344
iap10@3290 345 host_env->ds_base = 0;
iap10@3290 346 host_env->cs_base = 0;
iap10@3290 347 error |= __vmwrite(HOST_FS_BASE, host_env->ds_base);
iap10@3290 348 error |= __vmwrite(HOST_GS_BASE, host_env->ds_base);
iap10@3290 349
iap10@3290 350 /* Debug */
arun@4585 351 __asm__ __volatile__ ("sidt (%0) \n" :: "a"(&desc) : "memory");
iap10@3290 352 host_env->idtr_limit = desc.size;
iap10@3290 353 host_env->idtr_base = desc.address;
iap10@3290 354 error |= __vmwrite(HOST_IDTR_BASE, host_env->idtr_base);
iap10@3290 355
kaf24@5193 356 __asm__ __volatile__ ("mov %%cr0,%0" : "=r" (crn) : );
arun@4588 357
iap10@3290 358 host_env->cr0 = crn;
iap10@3290 359 error |= __vmwrite(HOST_CR0, crn); /* same CR0 */
iap10@3290 360
iap10@3290 361 /* CR3 is set in vmx_final_setup_hostos */
kaf24@5193 362 __asm__ __volatile__ ("mov %%cr4,%0" : "=r" (crn) : );
iap10@3290 363 host_env->cr4 = crn;
iap10@3290 364 error |= __vmwrite(HOST_CR4, crn);
kaf24@5414 365 error |= __vmwrite(HOST_RIP, (unsigned long) vmx_asm_vmexit_handler);
iap10@3290 366
iap10@3290 367 return error;
iap10@3290 368 }
iap10@3290 369
iap10@3290 370 /*
iap10@3290 371 * Need to extend to support full virtualization.
iap10@3290 372 * The variable use_host_env indicates if the new VMCS needs to use
iap10@3290 373 * the same setups as the host has (xenolinux).
iap10@3290 374 */
iap10@3290 375
iap10@3290 376 int construct_vmcs(struct arch_vmx_struct *arch_vmx,
kaf24@4683 377 struct cpu_user_regs *regs,
kaf24@4683 378 struct vcpu_guest_context *ctxt,
iap10@3290 379 int use_host_env)
iap10@3290 380 {
iap10@3290 381 int error;
iap10@3290 382 u64 vmcs_phys_ptr;
iap10@3290 383
iap10@3290 384 struct host_execution_env host_env;
iap10@3290 385
iap10@3290 386 if (use_host_env != VMCS_USE_HOST_ENV)
iap10@3290 387 return -EINVAL;
iap10@3290 388
iap10@3290 389 memset(&host_env, 0, sizeof(struct host_execution_env));
iap10@3290 390
iap10@3290 391 vmcs_phys_ptr = (u64) virt_to_phys(arch_vmx->vmcs);
iap10@3290 392
iap10@3290 393 if ((error = __vmpclear (vmcs_phys_ptr))) {
iap10@3290 394 printk("construct_vmcs: VMCLEAR failed\n");
iap10@3290 395 return -EINVAL;
iap10@3290 396 }
iap10@3290 397 if ((error = load_vmcs(arch_vmx, vmcs_phys_ptr))) {
iap10@3290 398 printk("construct_vmcs: load_vmcs failed: VMCS = %lx\n",
iap10@3290 399 (unsigned long) vmcs_phys_ptr);
iap10@3290 400 return -EINVAL;
iap10@3290 401 }
iap10@3290 402 if ((error = construct_vmcs_controls())) {
iap10@3290 403 printk("construct_vmcs: construct_vmcs_controls failed\n");
iap10@3290 404 return -EINVAL;
iap10@3290 405 }
iap10@3290 406 /* host selectors */
iap10@3290 407 if ((error = construct_vmcs_host(&host_env))) {
iap10@3290 408 printk("construct_vmcs: construct_vmcs_host failed\n");
iap10@3290 409 return -EINVAL;
iap10@3290 410 }
iap10@3290 411 /* guest selectors */
kaf24@4683 412 if ((error = construct_init_vmcs_guest(regs, ctxt, &host_env))) {
iap10@3290 413 printk("construct_vmcs: construct_vmcs_guest failed\n");
iap10@3290 414 return -EINVAL;
iap10@3290 415 }
iap10@3290 416
iap10@3290 417 if ((error |= __vmwrite(EXCEPTION_BITMAP,
iap10@3290 418 MONITOR_DEFAULT_EXCEPTION_BITMAP))) {
iap10@3290 419 printk("construct_vmcs: setting Exception bitmap failed\n");
iap10@3290 420 return -EINVAL;
iap10@3290 421 }
iap10@3290 422
iap10@3290 423 return 0;
iap10@3290 424 }
iap10@3290 425
iap10@3290 426 int load_vmcs(struct arch_vmx_struct *arch_vmx, u64 phys_ptr)
iap10@3290 427 {
iap10@3290 428 int error;
iap10@3290 429
iap10@3290 430 if ((error = __vmptrld(phys_ptr))) {
iap10@3290 431 clear_bit(ARCH_VMX_VMCS_LOADED, &arch_vmx->flags);
iap10@3290 432 return error;
iap10@3290 433 }
iap10@3290 434 set_bit(ARCH_VMX_VMCS_LOADED, &arch_vmx->flags);
iap10@3290 435 return 0;
iap10@3290 436 }
iap10@3290 437
iap10@3290 438 int store_vmcs(struct arch_vmx_struct *arch_vmx, u64 phys_ptr)
iap10@3290 439 {
iap10@3290 440 /* take the current VMCS */
iap10@3290 441 __vmptrst(phys_ptr);
iap10@3290 442 clear_bit(ARCH_VMX_VMCS_LOADED, &arch_vmx->flags);
iap10@3290 443 return 0;
iap10@3290 444 }
iap10@3290 445
iap10@3290 446 void vm_launch_fail(unsigned long eflags)
iap10@3290 447 {
arun@5382 448 __vmx_bug(guest_cpu_user_regs());
iap10@3290 449 }
iap10@3290 450
iap10@3290 451 void vm_resume_fail(unsigned long eflags)
iap10@3290 452 {
arun@5382 453 __vmx_bug(guest_cpu_user_regs());
iap10@3290 454 }
iap10@3290 455
mafetter@3717 456 #endif /* CONFIG_VMX */
kaf24@3914 457
kaf24@3914 458 /*
kaf24@3914 459 * Local variables:
kaf24@3914 460 * mode: C
kaf24@3914 461 * c-set-style: "BSD"
kaf24@3914 462 * c-basic-offset: 4
kaf24@3914 463 * tab-width: 4
kaf24@3914 464 * indent-tabs-mode: nil
kaf24@3988 465 * End:
kaf24@3914 466 */