xen-vtx-unstable

annotate xen/arch/x86/vmx_vmcs.c @ 4683:38a02ee9a9c8

bitkeeper revision 1.1389.1.2 (4270ed5dZvr_HdIQR0eBM2m4Kj81_A)

Renames:
execution_context/xen_regs -> cpu_user_regs
full_execution_context -> vcpu_guest_context
[defined both 'struct xxx' and 'xxx_t' forms]
Signed-off-by: Keir Fraser <keir@xensource.com>
author kaf24@firebug.cl.cam.ac.uk
date Thu Apr 28 14:04:13 2005 +0000 (2005-04-28)
parents 18a8f5216548
children 65b28c74cec2 4f406bfbf32e d23d2657744d
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>
iap10@3290 25
iap10@3290 26 #include <asm/cpufeature.h>
iap10@3290 27 #include <asm/processor.h>
iap10@3290 28 #include <asm/msr.h>
iap10@3290 29 #include <asm/vmx.h>
iap10@3290 30 #include <xen/event.h>
iap10@3290 31 #include <xen/kernel.h>
iap10@3290 32 #include <public/io/ioreq.h>
iap10@3290 33 #include <asm/domain_page.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;
iap10@3290 40 unsigned int cpu_sig = cpuid_eax(0x00000001);
iap10@3290 41
iap10@3290 42 vmcs = (struct vmcs_struct *) alloc_xenheap_pages(get_order(vmcs_size));
iap10@3290 43 memset((char *) vmcs, 0, vmcs_size); /* don't remove this */
iap10@3290 44
iap10@3290 45 vmcs->vmcs_revision_id = (cpu_sig > 0xf41)? 3 : 1;
iap10@3290 46 return vmcs;
iap10@3290 47 }
iap10@3290 48
iap10@3290 49 void free_vmcs(struct vmcs_struct *vmcs)
iap10@3290 50 {
iap10@3290 51 int order;
iap10@3290 52
iap10@3290 53 order = (vmcs_size >> PAGE_SHIFT) - 1;
iap10@3290 54 free_xenheap_pages((unsigned long) vmcs, order);
iap10@3290 55 }
iap10@3290 56
iap10@3290 57 static inline int construct_vmcs_controls(void)
iap10@3290 58 {
iap10@3290 59 int error = 0;
iap10@3290 60
iap10@3290 61 error |= __vmwrite(PIN_BASED_VM_EXEC_CONTROL,
iap10@3290 62 MONITOR_PIN_BASED_EXEC_CONTROLS);
iap10@3290 63
iap10@3290 64 error |= __vmwrite(CPU_BASED_VM_EXEC_CONTROL,
iap10@3290 65 MONITOR_CPU_BASED_EXEC_CONTROLS);
iap10@3290 66
iap10@3290 67 error |= __vmwrite(VM_EXIT_CONTROLS, MONITOR_VM_EXIT_CONTROLS);
iap10@3290 68 error |= __vmwrite(VM_ENTRY_CONTROLS, MONITOR_VM_ENTRY_CONTROLS);
iap10@3290 69
iap10@3290 70 return error;
iap10@3290 71 }
iap10@3290 72
iap10@3290 73 #define GUEST_SEGMENT_LIMIT 0xffffffff
iap10@3290 74 #define HOST_SEGMENT_LIMIT 0xffffffff
iap10@3290 75
iap10@3290 76 struct host_execution_env {
iap10@3290 77 /* selectors */
iap10@3290 78 unsigned short ldtr_selector;
iap10@3290 79 unsigned short tr_selector;
iap10@3290 80 unsigned short ds_selector;
iap10@3290 81 unsigned short cs_selector;
iap10@3290 82 /* limits */
iap10@3290 83 unsigned short gdtr_limit;
iap10@3290 84 unsigned short ldtr_limit;
iap10@3290 85 unsigned short idtr_limit;
iap10@3290 86 unsigned short tr_limit;
iap10@3290 87 /* base */
iap10@3290 88 unsigned long gdtr_base;
iap10@3290 89 unsigned long ldtr_base;
iap10@3290 90 unsigned long idtr_base;
iap10@3290 91 unsigned long tr_base;
iap10@3290 92 unsigned long ds_base;
iap10@3290 93 unsigned long cs_base;
iap10@3290 94 /* control registers */
iap10@3290 95 unsigned long cr3;
iap10@3290 96 unsigned long cr0;
iap10@3290 97 unsigned long cr4;
iap10@3290 98 unsigned long dr7;
iap10@3290 99 };
iap10@3290 100
iap10@3290 101 #define round_pgdown(_p) ((_p)&PAGE_MASK) /* coped from domain.c */
iap10@3290 102
kaf24@4683 103 int vmx_setup_platform(struct exec_domain *d, struct cpu_user_regs *regs)
iap10@3290 104 {
iap10@3290 105 int i;
iap10@3290 106 unsigned int n;
iap10@3290 107 unsigned long *p, mpfn, offset, addr;
iap10@3290 108 struct e820entry *e820p;
iap10@3290 109 unsigned long gpfn = 0;
iap10@3290 110
kaf24@4683 111 regs->ebx = 0; /* Linux expects ebx to be 0 for boot proc */
iap10@3290 112
kaf24@4683 113 n = regs->ecx;
iap10@3290 114 if (n > 32) {
maf46@3855 115 VMX_DBG_LOG(DBG_LEVEL_1, "Too many e820 entries: %d", n);
iap10@3290 116 return -1;
iap10@3290 117 }
iap10@3290 118
kaf24@4683 119 addr = regs->edi;
iap10@3290 120 offset = (addr & ~PAGE_MASK);
iap10@3290 121 addr = round_pgdown(addr);
iap10@3707 122 mpfn = phys_to_machine_mapping(addr >> PAGE_SHIFT);
iap10@3290 123 p = map_domain_mem(mpfn << PAGE_SHIFT);
iap10@3290 124
iap10@3290 125 e820p = (struct e820entry *) ((unsigned long) p + offset);
iap10@3290 126
maf46@3880 127 #ifndef NDEBUG
maf46@3880 128 print_e820_memory_map(e820p, n);
maf46@3880 129 #endif
maf46@3880 130
iap10@3290 131 for (i = 0; i < n; i++) {
iap10@3290 132 if (e820p[i].type == E820_SHARED_PAGE) {
iap10@3290 133 gpfn = (e820p[i].addr >> PAGE_SHIFT);
iap10@3290 134 break;
iap10@3290 135 }
iap10@3290 136 }
iap10@3290 137
iap10@3290 138 if (gpfn == 0) {
iap10@3708 139 printk("No shared Page ?\n");
iap10@3708 140 unmap_domain_mem(p);
iap10@3290 141 return -1;
iap10@3290 142 }
iap10@3290 143 unmap_domain_mem(p);
iap10@3290 144
iap10@3707 145 mpfn = phys_to_machine_mapping(gpfn);
iap10@3290 146 p = map_domain_mem(mpfn << PAGE_SHIFT);
iap10@3708 147 ASSERT(p != NULL);
iap10@3748 148
iap10@3748 149 /* Initialise shared page */
iap10@3748 150 memset(p, 0, PAGE_SIZE);
iap10@3748 151
kaf24@3677 152 d->arch.arch_vmx.vmx_platform.shared_page_va = (unsigned long) p;
iap10@3290 153
iap10@3290 154 return 0;
iap10@3290 155 }
iap10@3290 156
iap10@3290 157 void vmx_do_launch(struct exec_domain *ed)
iap10@3290 158 {
iap10@3290 159 /* Update CR3, GDT, LDT, TR */
iap10@3290 160 unsigned int tr, cpu, error = 0;
iap10@3290 161 struct host_execution_env host_env;
iap10@3290 162 struct Xgt_desc_struct desc;
kaf24@4633 163 unsigned long pfn = 0;
iap10@3290 164 struct pfn_info *page;
kaf24@4683 165 struct cpu_user_regs *regs = get_cpu_user_regs();
iap10@3290 166
kaf24@4633 167 cpu = smp_processor_id();
iap10@3290 168
iap10@3290 169 page = (struct pfn_info *) alloc_domheap_page(NULL);
iap10@3290 170 pfn = (unsigned long) (page - frame_table);
iap10@3290 171
kaf24@4683 172 vmx_setup_platform(ed, regs);
iap10@3290 173
arun@4585 174 __asm__ __volatile__ ("sgdt (%0) \n" :: "a"(&desc) : "memory");
iap10@3290 175 host_env.gdtr_limit = desc.size;
iap10@3290 176 host_env.gdtr_base = desc.address;
iap10@3290 177
iap10@3290 178 error |= __vmwrite(HOST_GDTR_BASE, host_env.gdtr_base);
iap10@3290 179
iap10@3290 180 error |= __vmwrite(GUEST_LDTR_SELECTOR, 0);
iap10@3290 181 error |= __vmwrite(GUEST_LDTR_BASE, 0);
iap10@3290 182 error |= __vmwrite(GUEST_LDTR_LIMIT, 0);
iap10@3290 183
arun@4585 184 __asm__ __volatile__ ("str (%0) \n" :: "a"(&tr) : "memory");
iap10@3290 185 host_env.tr_selector = tr;
iap10@3290 186 host_env.tr_limit = sizeof(struct tss_struct);
iap10@3290 187 host_env.tr_base = (unsigned long) &init_tss[cpu];
iap10@3290 188
iap10@3290 189 error |= __vmwrite(HOST_TR_SELECTOR, host_env.tr_selector);
iap10@3290 190 error |= __vmwrite(HOST_TR_BASE, host_env.tr_base);
iap10@3290 191 error |= __vmwrite(GUEST_TR_BASE, 0);
iap10@3290 192 error |= __vmwrite(GUEST_TR_LIMIT, 0xff);
iap10@3290 193
iap10@3810 194 __vmwrite(GUEST_CR3, pagetable_val(ed->arch.guest_table));
kaf24@3677 195 __vmwrite(HOST_CR3, pagetable_val(ed->arch.monitor_table));
kaf24@3761 196 __vmwrite(HOST_ESP, (unsigned long)get_stack_bottom());
iap10@3290 197
kaf24@3677 198 ed->arch.schedule_tail = arch_vmx_do_resume;
iap10@3290 199 }
iap10@3290 200
iap10@3290 201 /*
iap10@3290 202 * Initially set the same environement as host.
iap10@3290 203 */
iap10@3290 204 static inline int
kaf24@4683 205 construct_init_vmcs_guest(struct cpu_user_regs *regs,
kaf24@4683 206 struct vcpu_guest_context *ctxt,
iap10@3290 207 struct host_execution_env *host_env)
iap10@3290 208 {
iap10@3290 209 int error = 0;
iap10@3290 210 union vmcs_arbytes arbytes;
iap10@3290 211 unsigned long dr7;
iap10@3290 212 unsigned long eflags, shadow_cr;
iap10@3290 213
iap10@3290 214 /* MSR */
iap10@3290 215 error |= __vmwrite(VM_EXIT_MSR_LOAD_ADDR, 0);
iap10@3290 216 error |= __vmwrite(VM_EXIT_MSR_STORE_ADDR, 0);
iap10@3290 217
iap10@3290 218 error |= __vmwrite(VM_EXIT_MSR_STORE_COUNT, 0);
iap10@3290 219 error |= __vmwrite(VM_EXIT_MSR_LOAD_COUNT, 0);
iap10@3290 220 error |= __vmwrite(VM_ENTRY_MSR_LOAD_COUNT, 0);
iap10@3290 221 /* interrupt */
iap10@3290 222 error |= __vmwrite(VM_ENTRY_INTR_INFO_FIELD, 0);
iap10@3290 223 /* mask */
iap10@3290 224 error |= __vmwrite(CR0_GUEST_HOST_MASK, 0xffffffff);
iap10@3290 225 error |= __vmwrite(CR4_GUEST_HOST_MASK, 0xffffffff);
iap10@3290 226
iap10@3290 227 error |= __vmwrite(PAGE_FAULT_ERROR_CODE_MASK, 0);
iap10@3290 228 error |= __vmwrite(PAGE_FAULT_ERROR_CODE_MATCH, 0);
iap10@3290 229
iap10@3290 230 /* TSC */
iap10@3290 231 error |= __vmwrite(TSC_OFFSET, 0);
iap10@3290 232 error |= __vmwrite(CR3_TARGET_COUNT, 0);
iap10@3290 233
iap10@3290 234 /* Guest Selectors */
kaf24@4683 235 error |= __vmwrite(GUEST_CS_SELECTOR, regs->cs);
kaf24@4683 236 error |= __vmwrite(GUEST_ES_SELECTOR, regs->es);
kaf24@4683 237 error |= __vmwrite(GUEST_SS_SELECTOR, regs->ss);
kaf24@4683 238 error |= __vmwrite(GUEST_DS_SELECTOR, regs->ds);
kaf24@4683 239 error |= __vmwrite(GUEST_FS_SELECTOR, regs->fs);
kaf24@4683 240 error |= __vmwrite(GUEST_GS_SELECTOR, regs->gs);
iap10@3290 241
iap10@3290 242 /* Guest segment Limits */
iap10@3290 243 error |= __vmwrite(GUEST_CS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 244 error |= __vmwrite(GUEST_ES_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 245 error |= __vmwrite(GUEST_SS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 246 error |= __vmwrite(GUEST_DS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 247 error |= __vmwrite(GUEST_FS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 248 error |= __vmwrite(GUEST_GS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 249
iap10@3290 250 error |= __vmwrite(GUEST_IDTR_LIMIT, host_env->idtr_limit);
iap10@3290 251
iap10@3290 252 /* AR bytes */
iap10@3290 253 arbytes.bytes = 0;
iap10@3290 254 arbytes.fields.seg_type = 0x3; /* type = 3 */
iap10@3290 255 arbytes.fields.s = 1; /* code or data, i.e. not system */
iap10@3290 256 arbytes.fields.dpl = 0; /* DPL = 3 */
iap10@3290 257 arbytes.fields.p = 1; /* segment present */
iap10@3290 258 arbytes.fields.default_ops_size = 1; /* 32-bit */
iap10@3290 259 arbytes.fields.g = 1;
iap10@3290 260 arbytes.fields.null_bit = 0; /* not null */
iap10@3290 261
iap10@3290 262 error |= __vmwrite(GUEST_ES_AR_BYTES, arbytes.bytes);
iap10@3290 263 error |= __vmwrite(GUEST_SS_AR_BYTES, arbytes.bytes);
iap10@3290 264 error |= __vmwrite(GUEST_DS_AR_BYTES, arbytes.bytes);
iap10@3290 265 error |= __vmwrite(GUEST_FS_AR_BYTES, arbytes.bytes);
iap10@3290 266 error |= __vmwrite(GUEST_GS_AR_BYTES, arbytes.bytes);
iap10@3290 267
iap10@3290 268 arbytes.fields.seg_type = 0xb; /* type = 0xb */
iap10@3290 269 error |= __vmwrite(GUEST_CS_AR_BYTES, arbytes.bytes);
iap10@3290 270
kaf24@4683 271 error |= __vmwrite(GUEST_GDTR_BASE, regs->edx);
kaf24@4683 272 regs->edx = 0;
kaf24@4683 273 error |= __vmwrite(GUEST_GDTR_LIMIT, regs->eax);
kaf24@4683 274 regs->eax = 0;
iap10@3290 275
iap10@3290 276 arbytes.fields.s = 0; /* not code or data segement */
iap10@3290 277 arbytes.fields.seg_type = 0x2; /* LTD */
iap10@3290 278 arbytes.fields.default_ops_size = 0; /* 16-bit */
iap10@3290 279 arbytes.fields.g = 0;
iap10@3290 280 error |= __vmwrite(GUEST_LDTR_AR_BYTES, arbytes.bytes);
iap10@3290 281
iap10@3290 282 arbytes.fields.seg_type = 0xb; /* 32-bit TSS (busy) */
iap10@3290 283 error |= __vmwrite(GUEST_TR_AR_BYTES, arbytes.bytes);
iap10@3290 284
iap10@3290 285 error |= __vmwrite(GUEST_CR0, host_env->cr0); /* same CR0 */
iap10@3290 286
iap10@3290 287 /* Initally PG, PE are not set*/
iap10@3290 288 shadow_cr = host_env->cr0;
iap10@3290 289 shadow_cr &= ~(X86_CR0_PE | X86_CR0_PG);
iap10@3290 290 error |= __vmwrite(CR0_READ_SHADOW, shadow_cr);
kaf24@3755 291 /* CR3 is set in vmx_final_setup_guest */
iap10@3290 292 error |= __vmwrite(GUEST_CR4, host_env->cr4);
iap10@3290 293 shadow_cr = host_env->cr4;
iap10@3290 294 shadow_cr &= ~(X86_CR4_PGE | X86_CR4_VMXE);
iap10@3290 295 error |= __vmwrite(CR4_READ_SHADOW, shadow_cr);
iap10@3290 296
iap10@3290 297 error |= __vmwrite(GUEST_ES_BASE, host_env->ds_base);
iap10@3290 298 error |= __vmwrite(GUEST_CS_BASE, host_env->cs_base);
iap10@3290 299 error |= __vmwrite(GUEST_SS_BASE, host_env->ds_base);
iap10@3290 300 error |= __vmwrite(GUEST_DS_BASE, host_env->ds_base);
iap10@3290 301 error |= __vmwrite(GUEST_FS_BASE, host_env->ds_base);
iap10@3290 302 error |= __vmwrite(GUEST_GS_BASE, host_env->ds_base);
iap10@3290 303 error |= __vmwrite(GUEST_IDTR_BASE, host_env->idtr_base);
iap10@3290 304
kaf24@4683 305 error |= __vmwrite(GUEST_ESP, regs->esp);
kaf24@4683 306 error |= __vmwrite(GUEST_EIP, regs->eip);
iap10@3290 307
kaf24@4683 308 eflags = regs->eflags & ~VMCS_EFLAGS_RESERVED_0; /* clear 0s */
iap10@3290 309 eflags |= VMCS_EFLAGS_RESERVED_1; /* set 1s */
iap10@3290 310
iap10@3290 311 error |= __vmwrite(GUEST_EFLAGS, eflags);
iap10@3290 312
iap10@3290 313 error |= __vmwrite(GUEST_INTERRUPTIBILITY_INFO, 0);
arun@4588 314 #ifdef __i386__
iap10@3290 315 __asm__ __volatile__ ("mov %%dr7, %0\n" : "=r" (dr7));
arun@4588 316 #else
arun@4588 317 __asm__ __volatile__ ("movq %%dr7, %0\n" : "=r" (dr7));
arun@4588 318 #endif
iap10@3290 319 error |= __vmwrite(GUEST_DR7, dr7);
iap10@3290 320 error |= __vmwrite(GUEST_VMCS0, 0xffffffff);
iap10@3290 321 error |= __vmwrite(GUEST_VMCS1, 0xffffffff);
iap10@3290 322
iap10@3290 323 return error;
iap10@3290 324 }
iap10@3290 325
iap10@3290 326 static inline int construct_vmcs_host(struct host_execution_env *host_env)
iap10@3290 327 {
iap10@3290 328 int error = 0;
iap10@3290 329 unsigned long crn;
iap10@3290 330 struct Xgt_desc_struct desc;
iap10@3290 331
iap10@3290 332 /* Host Selectors */
iap10@3290 333 host_env->ds_selector = __HYPERVISOR_DS;
iap10@3290 334 error |= __vmwrite(HOST_ES_SELECTOR, host_env->ds_selector);
iap10@3290 335 error |= __vmwrite(HOST_SS_SELECTOR, host_env->ds_selector);
iap10@3290 336 error |= __vmwrite(HOST_DS_SELECTOR, host_env->ds_selector);
iap10@3290 337 error |= __vmwrite(HOST_FS_SELECTOR, host_env->ds_selector);
iap10@3290 338 error |= __vmwrite(HOST_GS_SELECTOR, host_env->ds_selector);
iap10@3290 339
iap10@3290 340 host_env->cs_selector = __HYPERVISOR_CS;
iap10@3290 341 error |= __vmwrite(HOST_CS_SELECTOR, host_env->cs_selector);
iap10@3290 342
iap10@3290 343 host_env->ds_base = 0;
iap10@3290 344 host_env->cs_base = 0;
iap10@3290 345 error |= __vmwrite(HOST_FS_BASE, host_env->ds_base);
iap10@3290 346 error |= __vmwrite(HOST_GS_BASE, host_env->ds_base);
iap10@3290 347
iap10@3290 348 /* Debug */
arun@4585 349 __asm__ __volatile__ ("sidt (%0) \n" :: "a"(&desc) : "memory");
iap10@3290 350 host_env->idtr_limit = desc.size;
iap10@3290 351 host_env->idtr_base = desc.address;
iap10@3290 352 error |= __vmwrite(HOST_IDTR_BASE, host_env->idtr_base);
iap10@3290 353
arun@4588 354 #ifdef __i386__
iap10@3290 355 __asm__ __volatile__ ("movl %%cr0,%0" : "=r" (crn) : );
arun@4588 356 #else
arun@4588 357 __asm__ __volatile__ ("movq %%cr0,%0" : "=r" (crn) : );
arun@4588 358 #endif
arun@4588 359
iap10@3290 360 host_env->cr0 = crn;
iap10@3290 361 error |= __vmwrite(HOST_CR0, crn); /* same CR0 */
iap10@3290 362
iap10@3290 363 /* CR3 is set in vmx_final_setup_hostos */
arun@4588 364 #ifdef __i386__
iap10@3290 365 __asm__ __volatile__ ("movl %%cr4,%0" : "=r" (crn) : );
arun@4588 366 #else
arun@4588 367 __asm__ __volatile__ ("movq %%cr4,%0" : "=r" (crn) : );
arun@4588 368 #endif
iap10@3290 369 host_env->cr4 = crn;
iap10@3290 370 error |= __vmwrite(HOST_CR4, crn);
iap10@3290 371 error |= __vmwrite(HOST_EIP, (unsigned long) vmx_asm_vmexit_handler);
iap10@3290 372
iap10@3290 373 return error;
iap10@3290 374 }
iap10@3290 375
iap10@3290 376 /*
iap10@3290 377 * Need to extend to support full virtualization.
iap10@3290 378 * The variable use_host_env indicates if the new VMCS needs to use
iap10@3290 379 * the same setups as the host has (xenolinux).
iap10@3290 380 */
iap10@3290 381
iap10@3290 382 int construct_vmcs(struct arch_vmx_struct *arch_vmx,
kaf24@4683 383 struct cpu_user_regs *regs,
kaf24@4683 384 struct vcpu_guest_context *ctxt,
iap10@3290 385 int use_host_env)
iap10@3290 386 {
iap10@3290 387 int error;
iap10@3290 388 u64 vmcs_phys_ptr;
iap10@3290 389
iap10@3290 390 struct host_execution_env host_env;
iap10@3290 391
iap10@3290 392 if (use_host_env != VMCS_USE_HOST_ENV)
iap10@3290 393 return -EINVAL;
iap10@3290 394
iap10@3290 395 memset(&host_env, 0, sizeof(struct host_execution_env));
iap10@3290 396
iap10@3290 397 vmcs_phys_ptr = (u64) virt_to_phys(arch_vmx->vmcs);
iap10@3290 398
iap10@3290 399 if ((error = __vmpclear (vmcs_phys_ptr))) {
iap10@3290 400 printk("construct_vmcs: VMCLEAR failed\n");
iap10@3290 401 return -EINVAL;
iap10@3290 402 }
iap10@3290 403 if ((error = load_vmcs(arch_vmx, vmcs_phys_ptr))) {
iap10@3290 404 printk("construct_vmcs: load_vmcs failed: VMCS = %lx\n",
iap10@3290 405 (unsigned long) vmcs_phys_ptr);
iap10@3290 406 return -EINVAL;
iap10@3290 407 }
iap10@3290 408 if ((error = construct_vmcs_controls())) {
iap10@3290 409 printk("construct_vmcs: construct_vmcs_controls failed\n");
iap10@3290 410 return -EINVAL;
iap10@3290 411 }
iap10@3290 412 /* host selectors */
iap10@3290 413 if ((error = construct_vmcs_host(&host_env))) {
iap10@3290 414 printk("construct_vmcs: construct_vmcs_host failed\n");
iap10@3290 415 return -EINVAL;
iap10@3290 416 }
iap10@3290 417 /* guest selectors */
kaf24@4683 418 if ((error = construct_init_vmcs_guest(regs, ctxt, &host_env))) {
iap10@3290 419 printk("construct_vmcs: construct_vmcs_guest failed\n");
iap10@3290 420 return -EINVAL;
iap10@3290 421 }
iap10@3290 422
iap10@3290 423 if ((error |= __vmwrite(EXCEPTION_BITMAP,
iap10@3290 424 MONITOR_DEFAULT_EXCEPTION_BITMAP))) {
iap10@3290 425 printk("construct_vmcs: setting Exception bitmap failed\n");
iap10@3290 426 return -EINVAL;
iap10@3290 427 }
iap10@3290 428
iap10@3290 429 return 0;
iap10@3290 430 }
iap10@3290 431
iap10@3290 432 int load_vmcs(struct arch_vmx_struct *arch_vmx, u64 phys_ptr)
iap10@3290 433 {
iap10@3290 434 int error;
iap10@3290 435
iap10@3290 436 if ((error = __vmptrld(phys_ptr))) {
iap10@3290 437 clear_bit(ARCH_VMX_VMCS_LOADED, &arch_vmx->flags);
iap10@3290 438 return error;
iap10@3290 439 }
iap10@3290 440 set_bit(ARCH_VMX_VMCS_LOADED, &arch_vmx->flags);
iap10@3290 441 return 0;
iap10@3290 442 }
iap10@3290 443
iap10@3290 444 int store_vmcs(struct arch_vmx_struct *arch_vmx, u64 phys_ptr)
iap10@3290 445 {
iap10@3290 446 /* take the current VMCS */
iap10@3290 447 __vmptrst(phys_ptr);
iap10@3290 448 clear_bit(ARCH_VMX_VMCS_LOADED, &arch_vmx->flags);
iap10@3290 449 return 0;
iap10@3290 450 }
iap10@3290 451
iap10@3290 452 void vm_launch_fail(unsigned long eflags)
iap10@3290 453 {
iap10@3290 454 BUG();
iap10@3290 455 }
iap10@3290 456
iap10@3290 457 void vm_resume_fail(unsigned long eflags)
iap10@3290 458 {
iap10@3290 459 BUG();
iap10@3290 460 }
iap10@3290 461
mafetter@3717 462 #endif /* CONFIG_VMX */
kaf24@3914 463
kaf24@3914 464 /*
kaf24@3914 465 * Local variables:
kaf24@3914 466 * mode: C
kaf24@3914 467 * c-set-style: "BSD"
kaf24@3914 468 * c-basic-offset: 4
kaf24@3914 469 * tab-width: 4
kaf24@3914 470 * indent-tabs-mode: nil
kaf24@3988 471 * End:
kaf24@3914 472 */