xen-vtx-unstable

annotate xen/arch/x86/vmx_vmcs.c @ 3988:b3cd6b3aa702

bitkeeper revision 1.1236.1.58 (42288505tf22vxeNSISpP2B48DpV5A)

Fix the Emacs 'local variables' block to include required end stmt.
Signed-off-by: Keir Fraser <keir.fraser@cl.cam.ac.uk>
author kaf24@scramble.cl.cam.ac.uk
date Fri Mar 04 15:55:49 2005 +0000 (2005-03-04)
parents e93d8f53eabb
children a01199a95070
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
iap10@3290 103 int vmx_setup_platform(struct exec_domain *d, execution_context_t *context)
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
iap10@3290 111 context->ebx = 0; /* Linux expects ebx to be 0 for boot proc */
iap10@3290 112
iap10@3290 113 n = context->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
iap10@3290 119 addr = context->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;
iap10@3290 163 struct list_head *list_ent;
iap10@3290 164 unsigned long i, pfn = 0;
iap10@3290 165 struct pfn_info *page;
iap10@3290 166 execution_context_t *ec = get_execution_context();
iap10@3290 167 struct domain *d = ed->domain;
iap10@3290 168
iap10@3290 169 cpu = smp_processor_id();
kaf24@3677 170 d->arch.min_pfn = d->arch.max_pfn = 0;
iap10@3290 171
iap10@3290 172 spin_lock(&d->page_alloc_lock);
iap10@3290 173 list_ent = d->page_list.next;
iap10@3290 174
kaf24@3303 175 for ( i = 0; list_ent != &d->page_list; i++ )
kaf24@3303 176 {
iap10@3290 177 pfn = list_entry(list_ent, struct pfn_info, list) - frame_table;
kaf24@3677 178 d->arch.min_pfn = min(d->arch.min_pfn, pfn);
kaf24@3677 179 d->arch.max_pfn = max(d->arch.max_pfn, pfn);
iap10@3290 180 list_ent = frame_table[pfn].list.next;
iap10@3290 181 }
iap10@3290 182
iap10@3290 183 spin_unlock(&d->page_alloc_lock);
iap10@3290 184
iap10@3290 185 page = (struct pfn_info *) alloc_domheap_page(NULL);
iap10@3290 186 pfn = (unsigned long) (page - frame_table);
iap10@3290 187
iap10@3290 188 vmx_setup_platform(ed, ec);
iap10@3290 189
iap10@3290 190 __asm__ __volatile__ ("sgdt (%%eax) \n" :: "a"(&desc) : "memory");
iap10@3290 191 host_env.gdtr_limit = desc.size;
iap10@3290 192 host_env.gdtr_base = desc.address;
iap10@3290 193
iap10@3290 194 error |= __vmwrite(HOST_GDTR_BASE, host_env.gdtr_base);
iap10@3290 195
iap10@3290 196 error |= __vmwrite(GUEST_LDTR_SELECTOR, 0);
iap10@3290 197 error |= __vmwrite(GUEST_LDTR_BASE, 0);
iap10@3290 198 error |= __vmwrite(GUEST_LDTR_LIMIT, 0);
iap10@3290 199
iap10@3290 200 __asm__ __volatile__ ("str (%%eax) \n" :: "a"(&tr) : "memory");
iap10@3290 201 host_env.tr_selector = tr;
iap10@3290 202 host_env.tr_limit = sizeof(struct tss_struct);
iap10@3290 203 host_env.tr_base = (unsigned long) &init_tss[cpu];
iap10@3290 204
iap10@3290 205 error |= __vmwrite(HOST_TR_SELECTOR, host_env.tr_selector);
iap10@3290 206 error |= __vmwrite(HOST_TR_BASE, host_env.tr_base);
iap10@3290 207 error |= __vmwrite(GUEST_TR_BASE, 0);
iap10@3290 208 error |= __vmwrite(GUEST_TR_LIMIT, 0xff);
iap10@3290 209
iap10@3810 210 __vmwrite(GUEST_CR3, pagetable_val(ed->arch.guest_table));
kaf24@3677 211 __vmwrite(HOST_CR3, pagetable_val(ed->arch.monitor_table));
kaf24@3761 212 __vmwrite(HOST_ESP, (unsigned long)get_stack_bottom());
iap10@3290 213
kaf24@3677 214 ed->arch.schedule_tail = arch_vmx_do_resume;
iap10@3290 215 }
iap10@3290 216
iap10@3290 217 /*
iap10@3290 218 * Initially set the same environement as host.
iap10@3290 219 */
iap10@3290 220 static inline int
iap10@3290 221 construct_init_vmcs_guest(execution_context_t *context,
iap10@3290 222 full_execution_context_t *full_context,
iap10@3290 223 struct host_execution_env *host_env)
iap10@3290 224 {
iap10@3290 225 int error = 0;
iap10@3290 226 union vmcs_arbytes arbytes;
iap10@3290 227 unsigned long dr7;
iap10@3290 228 unsigned long eflags, shadow_cr;
iap10@3290 229
iap10@3290 230 /* MSR */
iap10@3290 231 error |= __vmwrite(VM_EXIT_MSR_LOAD_ADDR, 0);
iap10@3290 232 error |= __vmwrite(VM_EXIT_MSR_STORE_ADDR, 0);
iap10@3290 233
iap10@3290 234 error |= __vmwrite(VM_EXIT_MSR_STORE_COUNT, 0);
iap10@3290 235 error |= __vmwrite(VM_EXIT_MSR_LOAD_COUNT, 0);
iap10@3290 236 error |= __vmwrite(VM_ENTRY_MSR_LOAD_COUNT, 0);
iap10@3290 237 /* interrupt */
iap10@3290 238 error |= __vmwrite(VM_ENTRY_INTR_INFO_FIELD, 0);
iap10@3290 239 /* mask */
iap10@3290 240 error |= __vmwrite(CR0_GUEST_HOST_MASK, 0xffffffff);
iap10@3290 241 error |= __vmwrite(CR4_GUEST_HOST_MASK, 0xffffffff);
iap10@3290 242
iap10@3290 243 error |= __vmwrite(PAGE_FAULT_ERROR_CODE_MASK, 0);
iap10@3290 244 error |= __vmwrite(PAGE_FAULT_ERROR_CODE_MATCH, 0);
iap10@3290 245
iap10@3290 246 /* TSC */
iap10@3290 247 error |= __vmwrite(TSC_OFFSET, 0);
iap10@3290 248 error |= __vmwrite(CR3_TARGET_COUNT, 0);
iap10@3290 249
iap10@3290 250 /* Guest Selectors */
iap10@3290 251 error |= __vmwrite(GUEST_CS_SELECTOR, context->cs);
iap10@3290 252 error |= __vmwrite(GUEST_ES_SELECTOR, context->es);
iap10@3290 253 error |= __vmwrite(GUEST_SS_SELECTOR, context->ss);
iap10@3290 254 error |= __vmwrite(GUEST_DS_SELECTOR, context->ds);
iap10@3290 255 error |= __vmwrite(GUEST_FS_SELECTOR, context->fs);
iap10@3290 256 error |= __vmwrite(GUEST_GS_SELECTOR, context->gs);
iap10@3290 257
iap10@3290 258 /* Guest segment Limits */
iap10@3290 259 error |= __vmwrite(GUEST_CS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 260 error |= __vmwrite(GUEST_ES_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 261 error |= __vmwrite(GUEST_SS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 262 error |= __vmwrite(GUEST_DS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 263 error |= __vmwrite(GUEST_FS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 264 error |= __vmwrite(GUEST_GS_LIMIT, GUEST_SEGMENT_LIMIT);
iap10@3290 265
iap10@3290 266 error |= __vmwrite(GUEST_IDTR_LIMIT, host_env->idtr_limit);
iap10@3290 267
iap10@3290 268 /* AR bytes */
iap10@3290 269 arbytes.bytes = 0;
iap10@3290 270 arbytes.fields.seg_type = 0x3; /* type = 3 */
iap10@3290 271 arbytes.fields.s = 1; /* code or data, i.e. not system */
iap10@3290 272 arbytes.fields.dpl = 0; /* DPL = 3 */
iap10@3290 273 arbytes.fields.p = 1; /* segment present */
iap10@3290 274 arbytes.fields.default_ops_size = 1; /* 32-bit */
iap10@3290 275 arbytes.fields.g = 1;
iap10@3290 276 arbytes.fields.null_bit = 0; /* not null */
iap10@3290 277
iap10@3290 278 error |= __vmwrite(GUEST_ES_AR_BYTES, arbytes.bytes);
iap10@3290 279 error |= __vmwrite(GUEST_SS_AR_BYTES, arbytes.bytes);
iap10@3290 280 error |= __vmwrite(GUEST_DS_AR_BYTES, arbytes.bytes);
iap10@3290 281 error |= __vmwrite(GUEST_FS_AR_BYTES, arbytes.bytes);
iap10@3290 282 error |= __vmwrite(GUEST_GS_AR_BYTES, arbytes.bytes);
iap10@3290 283
iap10@3290 284 arbytes.fields.seg_type = 0xb; /* type = 0xb */
iap10@3290 285 error |= __vmwrite(GUEST_CS_AR_BYTES, arbytes.bytes);
iap10@3290 286
iap10@3290 287 error |= __vmwrite(GUEST_GDTR_BASE, context->edx);
iap10@3290 288 context->edx = 0;
iap10@3290 289 error |= __vmwrite(GUEST_GDTR_LIMIT, context->eax);
iap10@3290 290 context->eax = 0;
iap10@3290 291
iap10@3290 292 arbytes.fields.s = 0; /* not code or data segement */
iap10@3290 293 arbytes.fields.seg_type = 0x2; /* LTD */
iap10@3290 294 arbytes.fields.default_ops_size = 0; /* 16-bit */
iap10@3290 295 arbytes.fields.g = 0;
iap10@3290 296 error |= __vmwrite(GUEST_LDTR_AR_BYTES, arbytes.bytes);
iap10@3290 297
iap10@3290 298 arbytes.fields.seg_type = 0xb; /* 32-bit TSS (busy) */
iap10@3290 299 error |= __vmwrite(GUEST_TR_AR_BYTES, arbytes.bytes);
iap10@3290 300
iap10@3290 301 error |= __vmwrite(GUEST_CR0, host_env->cr0); /* same CR0 */
iap10@3290 302
iap10@3290 303 /* Initally PG, PE are not set*/
iap10@3290 304 shadow_cr = host_env->cr0;
iap10@3290 305 shadow_cr &= ~(X86_CR0_PE | X86_CR0_PG);
iap10@3290 306 error |= __vmwrite(CR0_READ_SHADOW, shadow_cr);
kaf24@3755 307 /* CR3 is set in vmx_final_setup_guest */
iap10@3290 308 error |= __vmwrite(GUEST_CR4, host_env->cr4);
iap10@3290 309 shadow_cr = host_env->cr4;
iap10@3290 310 shadow_cr &= ~(X86_CR4_PGE | X86_CR4_VMXE);
iap10@3290 311 error |= __vmwrite(CR4_READ_SHADOW, shadow_cr);
iap10@3290 312
iap10@3290 313 error |= __vmwrite(GUEST_ES_BASE, host_env->ds_base);
iap10@3290 314 error |= __vmwrite(GUEST_CS_BASE, host_env->cs_base);
iap10@3290 315 error |= __vmwrite(GUEST_SS_BASE, host_env->ds_base);
iap10@3290 316 error |= __vmwrite(GUEST_DS_BASE, host_env->ds_base);
iap10@3290 317 error |= __vmwrite(GUEST_FS_BASE, host_env->ds_base);
iap10@3290 318 error |= __vmwrite(GUEST_GS_BASE, host_env->ds_base);
iap10@3290 319 error |= __vmwrite(GUEST_IDTR_BASE, host_env->idtr_base);
iap10@3290 320
iap10@3290 321 error |= __vmwrite(GUEST_ESP, context->esp);
iap10@3290 322 error |= __vmwrite(GUEST_EIP, context->eip);
iap10@3290 323
iap10@3290 324 eflags = context->eflags & ~VMCS_EFLAGS_RESERVED_0; /* clear 0s */
iap10@3290 325 eflags |= VMCS_EFLAGS_RESERVED_1; /* set 1s */
iap10@3290 326
iap10@3290 327 error |= __vmwrite(GUEST_EFLAGS, eflags);
iap10@3290 328
iap10@3290 329 error |= __vmwrite(GUEST_INTERRUPTIBILITY_INFO, 0);
iap10@3290 330 __asm__ __volatile__ ("mov %%dr7, %0\n" : "=r" (dr7));
iap10@3290 331 error |= __vmwrite(GUEST_DR7, dr7);
iap10@3290 332 error |= __vmwrite(GUEST_VMCS0, 0xffffffff);
iap10@3290 333 error |= __vmwrite(GUEST_VMCS1, 0xffffffff);
iap10@3290 334
iap10@3290 335 return error;
iap10@3290 336 }
iap10@3290 337
iap10@3290 338 static inline int construct_vmcs_host(struct host_execution_env *host_env)
iap10@3290 339 {
iap10@3290 340 int error = 0;
iap10@3290 341 unsigned long crn;
iap10@3290 342 struct Xgt_desc_struct desc;
iap10@3290 343
iap10@3290 344 /* Host Selectors */
iap10@3290 345 host_env->ds_selector = __HYPERVISOR_DS;
iap10@3290 346 error |= __vmwrite(HOST_ES_SELECTOR, host_env->ds_selector);
iap10@3290 347 error |= __vmwrite(HOST_SS_SELECTOR, host_env->ds_selector);
iap10@3290 348 error |= __vmwrite(HOST_DS_SELECTOR, host_env->ds_selector);
iap10@3290 349 error |= __vmwrite(HOST_FS_SELECTOR, host_env->ds_selector);
iap10@3290 350 error |= __vmwrite(HOST_GS_SELECTOR, host_env->ds_selector);
iap10@3290 351
iap10@3290 352 host_env->cs_selector = __HYPERVISOR_CS;
iap10@3290 353 error |= __vmwrite(HOST_CS_SELECTOR, host_env->cs_selector);
iap10@3290 354
iap10@3290 355 host_env->ds_base = 0;
iap10@3290 356 host_env->cs_base = 0;
iap10@3290 357 error |= __vmwrite(HOST_FS_BASE, host_env->ds_base);
iap10@3290 358 error |= __vmwrite(HOST_GS_BASE, host_env->ds_base);
iap10@3290 359
iap10@3290 360 /* Debug */
iap10@3290 361 __asm__ __volatile__ ("sidt (%%eax) \n" :: "a"(&desc) : "memory");
iap10@3290 362 host_env->idtr_limit = desc.size;
iap10@3290 363 host_env->idtr_base = desc.address;
iap10@3290 364 error |= __vmwrite(HOST_IDTR_BASE, host_env->idtr_base);
iap10@3290 365
iap10@3290 366 __asm__ __volatile__ ("movl %%cr0,%0" : "=r" (crn) : );
iap10@3290 367 host_env->cr0 = crn;
iap10@3290 368 error |= __vmwrite(HOST_CR0, crn); /* same CR0 */
iap10@3290 369
iap10@3290 370 /* CR3 is set in vmx_final_setup_hostos */
iap10@3290 371 __asm__ __volatile__ ("movl %%cr4,%0" : "=r" (crn) : );
iap10@3290 372 host_env->cr4 = crn;
iap10@3290 373 error |= __vmwrite(HOST_CR4, crn);
iap10@3290 374 error |= __vmwrite(HOST_EIP, (unsigned long) vmx_asm_vmexit_handler);
iap10@3290 375
iap10@3290 376 return error;
iap10@3290 377 }
iap10@3290 378
iap10@3290 379 /*
iap10@3290 380 * Need to extend to support full virtualization.
iap10@3290 381 * The variable use_host_env indicates if the new VMCS needs to use
iap10@3290 382 * the same setups as the host has (xenolinux).
iap10@3290 383 */
iap10@3290 384
iap10@3290 385 int construct_vmcs(struct arch_vmx_struct *arch_vmx,
iap10@3290 386 execution_context_t *context,
iap10@3290 387 full_execution_context_t *full_context,
iap10@3290 388 int use_host_env)
iap10@3290 389 {
iap10@3290 390 int error;
iap10@3290 391 u64 vmcs_phys_ptr;
iap10@3290 392
iap10@3290 393 struct host_execution_env host_env;
iap10@3290 394
iap10@3290 395 if (use_host_env != VMCS_USE_HOST_ENV)
iap10@3290 396 return -EINVAL;
iap10@3290 397
iap10@3290 398 memset(&host_env, 0, sizeof(struct host_execution_env));
iap10@3290 399
iap10@3290 400 vmcs_phys_ptr = (u64) virt_to_phys(arch_vmx->vmcs);
iap10@3290 401
iap10@3290 402 if ((error = __vmpclear (vmcs_phys_ptr))) {
iap10@3290 403 printk("construct_vmcs: VMCLEAR failed\n");
iap10@3290 404 return -EINVAL;
iap10@3290 405 }
iap10@3290 406 if ((error = load_vmcs(arch_vmx, vmcs_phys_ptr))) {
iap10@3290 407 printk("construct_vmcs: load_vmcs failed: VMCS = %lx\n",
iap10@3290 408 (unsigned long) vmcs_phys_ptr);
iap10@3290 409 return -EINVAL;
iap10@3290 410 }
iap10@3290 411 if ((error = construct_vmcs_controls())) {
iap10@3290 412 printk("construct_vmcs: construct_vmcs_controls failed\n");
iap10@3290 413 return -EINVAL;
iap10@3290 414 }
iap10@3290 415 /* host selectors */
iap10@3290 416 if ((error = construct_vmcs_host(&host_env))) {
iap10@3290 417 printk("construct_vmcs: construct_vmcs_host failed\n");
iap10@3290 418 return -EINVAL;
iap10@3290 419 }
iap10@3290 420 /* guest selectors */
iap10@3290 421 if ((error = construct_init_vmcs_guest(context, full_context, &host_env))) {
iap10@3290 422 printk("construct_vmcs: construct_vmcs_guest failed\n");
iap10@3290 423 return -EINVAL;
iap10@3290 424 }
iap10@3290 425
iap10@3290 426 if ((error |= __vmwrite(EXCEPTION_BITMAP,
iap10@3290 427 MONITOR_DEFAULT_EXCEPTION_BITMAP))) {
iap10@3290 428 printk("construct_vmcs: setting Exception bitmap failed\n");
iap10@3290 429 return -EINVAL;
iap10@3290 430 }
iap10@3290 431
iap10@3290 432 return 0;
iap10@3290 433 }
iap10@3290 434
iap10@3290 435 int load_vmcs(struct arch_vmx_struct *arch_vmx, u64 phys_ptr)
iap10@3290 436 {
iap10@3290 437 int error;
iap10@3290 438
iap10@3290 439 if ((error = __vmptrld(phys_ptr))) {
iap10@3290 440 clear_bit(ARCH_VMX_VMCS_LOADED, &arch_vmx->flags);
iap10@3290 441 return error;
iap10@3290 442 }
iap10@3290 443 set_bit(ARCH_VMX_VMCS_LOADED, &arch_vmx->flags);
iap10@3290 444 return 0;
iap10@3290 445 }
iap10@3290 446
iap10@3290 447 int store_vmcs(struct arch_vmx_struct *arch_vmx, u64 phys_ptr)
iap10@3290 448 {
iap10@3290 449 /* take the current VMCS */
iap10@3290 450 __vmptrst(phys_ptr);
iap10@3290 451 clear_bit(ARCH_VMX_VMCS_LOADED, &arch_vmx->flags);
iap10@3290 452 return 0;
iap10@3290 453 }
iap10@3290 454
iap10@3290 455 void vm_launch_fail(unsigned long eflags)
iap10@3290 456 {
iap10@3290 457 BUG();
iap10@3290 458 }
iap10@3290 459
iap10@3290 460 void vm_resume_fail(unsigned long eflags)
iap10@3290 461 {
iap10@3290 462 BUG();
iap10@3290 463 }
iap10@3290 464
mafetter@3717 465 #endif /* CONFIG_VMX */
kaf24@3914 466
kaf24@3914 467 /*
kaf24@3914 468 * Local variables:
kaf24@3914 469 * mode: C
kaf24@3914 470 * c-set-style: "BSD"
kaf24@3914 471 * c-basic-offset: 4
kaf24@3914 472 * tab-width: 4
kaf24@3914 473 * indent-tabs-mode: nil
kaf24@3988 474 * End:
kaf24@3914 475 */