HWVMXR0.cpp@ 3168

Last change on this file since 3168 was 3168, checked in by vboxsync, 17 years ago
Corrected io return checks.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 73.7 KB

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1	/* $Id: HWVMXR0.cpp 3168 2007-06-20 08:45:50Z vboxsync $ */
2	/** @file
3	* HWACCM VMX - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 innotek GmbH
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License as published by the Free Software Foundation,
13	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14	* distribution. VirtualBox OSE is distributed in the hope that it will
15	* be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* If you received this file as part of a commercial VirtualBox
18	* distribution, then only the terms of your commercial VirtualBox
19	* license agreement apply instead of the previous paragraph.
20	*/
21
22
23	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#define LOG_GROUP LOG_GROUP_HWACCM
27	#include <VBox/hwaccm.h>
28	#include "HWACCMInternal.h"
29	#include <VBox/vm.h>
30	#include <VBox/x86.h>
31	#include <VBox/pgm.h>
32	#include <VBox/pdm.h>
33	#include <VBox/err.h>
34	#include <VBox/log.h>
35	#include <VBox/selm.h>
36	#include <VBox/iom.h>
37	#include <iprt/param.h>
38	#include <iprt/assert.h>
39	#include <iprt/asm.h>
40	#include "HWVMXR0.h"
41
42
43	/* IO operation lookup arrays. */
44	static uint32_t aIOSize[4] = {1, 2, 0, 4};
45	static uint32_t aIOOpAnd[4] = {0xff, 0xffff, 0, 0xffffffff};
46
47
48	/**
49	* Sets up and activates VMX
50	*
51	* @returns VBox status code.
52	* @param pVM The VM to operate on.
53	*/
54	HWACCMR0DECL(int) VMXR0Setup(PVM pVM)
55	{
56	int rc = VINF_SUCCESS;
57	uint32_t val;
58
59	if (pVM == NULL)
60	return VERR_INVALID_PARAMETER;
61
62	/* Setup Intel VMX. */
63	Assert(pVM->hwaccm.s.vmx.fSupported);
64
65	/* Set revision dword at the beginning of both structures. */
66	(uint32_t )pVM->hwaccm.s.vmx.pVMCS = MSR_IA32_VMX_BASIC_INFO_VMCS_ID(pVM->hwaccm.s.vmx.msr.vmx_basic_info);
67	(uint32_t )pVM->hwaccm.s.vmx.pVMXON = MSR_IA32_VMX_BASIC_INFO_VMCS_ID(pVM->hwaccm.s.vmx.msr.vmx_basic_info);
68
69	/* @todo we should unmap the two pages from the virtual address space in order to prevent accidental corruption.
70	* (which can have very bad consequences!!!)
71	*/
72
73	/* Make sure the VMX instructions don't cause #UD faults. */
74	ASMSetCR4(ASMGetCR4() \| X86_CR4_VMXE);
75
76	/* Enter VMX Root Mode */
77	Log(("pVMXONPhys = %VHp\n", pVM->hwaccm.s.vmx.pVMXONPhys));
78	rc = VMXEnable(pVM->hwaccm.s.vmx.pVMXONPhys);
79	if (VBOX_FAILURE(rc))
80	{
81	return rc;
82	}
83
84	/* Clear VM Control Structure. */
85	Log(("pVMCSPhys = %VHp\n", pVM->hwaccm.s.vmx.pVMCSPhys));
86	rc = VMXClearVMCS(pVM->hwaccm.s.vmx.pVMCSPhys);
87	if (VBOX_FAILURE(rc))
88	goto vmx_end;
89
90	/* Activate the VM Control Structure. */
91	rc = VMXActivateVMCS(pVM->hwaccm.s.vmx.pVMCSPhys);
92	if (VBOX_FAILURE(rc))
93	goto vmx_end;
94
95	/* VMX_VMCS_CTRL_PIN_EXEC_CONTROLS
96	* Set required bits to one and zero according to the MSR capabilities.
97	*/
98	val = (pVM->hwaccm.s.vmx.msr.vmx_pin_ctls & 0xFFFFFFFF);
99	/* External and non-maskable interrupts cause VM-exits. */
100	val = val \| VMX_VMCS_CTRL_PIN_EXEC_CONTROLS_EXT_INT_EXIT \| VMX_VMCS_CTRL_PIN_EXEC_CONTROLS_NMI_EXIT;
101	val &= (pVM->hwaccm.s.vmx.msr.vmx_pin_ctls >> 32ULL);
102
103	rc = VMXWriteVMCS(VMX_VMCS_CTRL_PIN_EXEC_CONTROLS, val);
104	AssertRC(rc);
105
106	/* VMX_VMCS_CTRL_PROC_EXEC_CONTROLS
107	* Set required bits to one and zero according to the MSR capabilities.
108	*/
109	val = (pVM->hwaccm.s.vmx.msr.vmx_proc_ctls & 0xFFFFFFFF);
110	/* Program which event cause VM-exits and which features we want to use. */
111	val = val \| VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_HLT_EXIT
112	\| VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_TSC_OFFSET
113	\| VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_INVLPG_EXIT
114	\| VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MOV_DR_EXIT
115	\| VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_UNCOND_IO_EXIT
116	\| VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MWAIT_EXIT; /* don't execute mwait or else we'll idle inside the guest (host thinks the cpu load is high) */
117
118	/** @note VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MWAIT_EXIT might cause a vmlaunch failure with an invalid control fields error. (combined with some other exit reasons) */
119
120	/*
121	if AMD64 guest mode
122	val \|= VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_CR8_LOAD_EXIT
123	\| VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_CR8_STORE_EXIT;
124	*/
125	#if HC_ARCH_BITS == 64
126	val \|= VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_CR8_LOAD_EXIT
127	\| VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_CR8_STORE_EXIT;
128	#endif
129	/* Mask away the bits that the CPU doesn't support */
130	/** @todo make sure they don't conflict with the above requirements. */
131	val &= (pVM->hwaccm.s.vmx.msr.vmx_proc_ctls >> 32ULL);
132	pVM->hwaccm.s.vmx.proc_ctls = val;
133
134	rc = VMXWriteVMCS(VMX_VMCS_CTRL_PROC_EXEC_CONTROLS, val);
135	AssertRC(rc);
136
137	/* VMX_VMCS_CTRL_CR3_TARGET_COUNT
138	* Set required bits to one and zero according to the MSR capabilities.
139	*/
140	rc = VMXWriteVMCS(VMX_VMCS_CTRL_CR3_TARGET_COUNT, 0);
141	AssertRC(rc);
142
143	/* VMX_VMCS_CTRL_ENTRY_CONTROLS
144	* Set required bits to one and zero according to the MSR capabilities.
145	*/
146	val = (pVM->hwaccm.s.vmx.msr.vmx_entry & 0xFFFFFFFF);
147	if (pVM->hwaccm.s.cpuid.u32AMDFeatureEDX & X86_CPUID_AMD_FEATURE_EDX_LONG_MODE)
148	{
149	/** @todo 32 bits guest mode only for now. */
150	/* val \|= VMX_VMCS_CTRL_ENTRY_CONTROLS_IA64_MODE; */
151	}
152	/* Mask away the bits that the CPU doesn't support */
153	/** @todo make sure they don't conflict with the above requirements. */
154	val &= (pVM->hwaccm.s.vmx.msr.vmx_entry >> 32ULL);
155	/* else Must be zero when AMD64 is not available. */
156	rc = VMXWriteVMCS(VMX_VMCS_CTRL_ENTRY_CONTROLS, val);
157	AssertRC(rc);
158
159	/* VMX_VMCS_CTRL_EXIT_CONTROLS
160	* Set required bits to one and zero according to the MSR capabilities.
161	*/
162	val = (pVM->hwaccm.s.vmx.msr.vmx_exit & 0xFFFFFFFF);
163	#if HC_ARCH_BITS == 64
164	val \|= VMX_VMCS_CTRL_EXIT_CONTROLS_HOST_AMD64;
165	#else
166	/* else Must be zero when AMD64 is not available. */
167	#endif
168	val &= (pVM->hwaccm.s.vmx.msr.vmx_exit >> 32ULL);
169	/* Don't acknowledge external interrupts on VM-exit. */
170	rc = VMXWriteVMCS(VMX_VMCS_CTRL_EXIT_CONTROLS, val);
171	AssertRC(rc);
172
173	/* Forward all exception except #NM & #PF to the guest.
174	* We always need to check pagefaults since our shadow page table can be out of sync.
175	* And we always lazily sync the FPU & XMM state.
176	*/
177
178	/*
179	* @todo Possible optimization:
180	* Keep the FPU and XMM state current in the EM thread. That way there's no need to
181	* lazily sync anything, but the downside is that we can't use the FPU stack or XMM
182	* registers ourselves of course.
183	*
184	* @note only possible if the current state is actually ours (X86_CR0_TS flag)
185	*/
186	rc = VMXWriteVMCS(VMX_VMCS_CTRL_EXCEPTION_BITMAP, HWACCM_VMX_TRAP_MASK);
187	AssertRC(rc);
188
189	/* Don't filter page faults; all of them should cause a switch. */
190	rc = VMXWriteVMCS(VMX_VMCS_CTRL_PAGEFAULT_ERROR_MASK, 0);
191	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_PAGEFAULT_ERROR_MATCH, 0);
192	AssertRC(rc);
193
194	/* Init TSC offset to zero. */
195	rc = VMXWriteVMCS(VMX_VMCS_CTRL_TSC_OFFSET_FULL, 0);
196	#if HC_ARCH_BITS == 32
197	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_TSC_OFFSET_HIGH, 0);
198	#endif
199	AssertRC(rc);
200
201	rc = VMXWriteVMCS(VMX_VMCS_CTRL_IO_BITMAP_A_FULL, 0);
202	#if HC_ARCH_BITS == 32
203	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_IO_BITMAP_A_HIGH, 0);
204	#endif
205	AssertRC(rc);
206
207	rc = VMXWriteVMCS(VMX_VMCS_CTRL_IO_BITMAP_B_FULL, 0);
208	#if HC_ARCH_BITS == 32
209	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_IO_BITMAP_B_HIGH, 0);
210	#endif
211	AssertRC(rc);
212
213	/* Clear MSR controls. */
214	if (pVM->hwaccm.s.vmx.msr.vmx_proc_ctls & VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_USE_MSR_BITMAPS)
215	{
216	/* Optional */
217	rc = VMXWriteVMCS(VMX_VMCS_CTRL_MSR_BITMAP_FULL, 0);
218	#if HC_ARCH_BITS == 32
219	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_MSR_BITMAP_HIGH, 0);
220	#endif
221	AssertRC(rc);
222	}
223	rc = VMXWriteVMCS(VMX_VMCS_CTRL_VMEXIT_MSR_STORE_FULL, 0);
224	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_VMEXIT_MSR_LOAD_FULL, 0);
225	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_VMENTRY_MSR_LOAD_FULL, 0);
226	#if HC_ARCH_BITS == 32
227	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_VMEXIT_MSR_STORE_HIGH, 0);
228	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_VMEXIT_MSR_LOAD_HIGH, 0);
229	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_VMEXIT_MSR_LOAD_HIGH, 0);
230	#endif
231	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_EXIT_MSR_STORE_COUNT, 0);
232	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_EXIT_MSR_LOAD_COUNT, 0);
233	AssertRC(rc);
234
235	if (pVM->hwaccm.s.vmx.msr.vmx_proc_ctls & VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_USE_TPR_SHADOW)
236	{
237	/* Optional */
238	rc = VMXWriteVMCS(VMX_VMCS_CTRL_TPR_TRESHOLD, 0);
239	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_VAPIC_PAGEADDR_FULL, 0);
240	#if HC_ARCH_BITS == 32
241	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_VAPIC_PAGEADDR_HIGH, 0);
242	#endif
243	AssertRC(rc);
244	}
245
246	/* Set link pointer to -1. Not currently used. */
247	#if HC_ARCH_BITS == 32
248	rc = VMXWriteVMCS(VMX_VMCS_GUEST_LINK_PTR_FULL, 0xFFFFFFFF);
249	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_LINK_PTR_HIGH, 0xFFFFFFFF);
250	#else
251	rc = VMXWriteVMCS(VMX_VMCS_GUEST_LINK_PTR_FULL, 0xFFFFFFFFFFFFFFFF);
252	#endif
253	AssertRC(rc);
254
255	/* Clear VM Control Structure. Marking it inactive, clearing implementation specific data and writing back VMCS data to memory. */
256	rc = VMXClearVMCS(pVM->hwaccm.s.vmx.pVMCSPhys);
257	AssertRC(rc);
258
259	vmx_end:
260	/* Leave VMX Root Mode. */
261	VMXDisable();
262	return rc;
263	}
264
265
266	/**
267	* Injects an event (trap or external interrupt)
268	*
269	* @returns VBox status code.
270	* @param pVM The VM to operate on.
271	* @param pCtx CPU Context
272	* @param intInfo VMX interrupt info
273	* @param cbInstr Opcode length of faulting instruction
274	* @param errCode Error code (optional)
275	*/
276	static int VMXR0InjectEvent(PVM pVM, CPUMCTX *pCtx, uint32_t intInfo, uint32_t cbInstr, uint32_t errCode)
277	{
278	int rc;
279
280	#ifdef VBOX_STRICT
281	uint32_t iGate = VMX_EXIT_INTERRUPTION_INFO_VECTOR(intInfo);
282	if (iGate == 0xE)
283	Log2(("VMXR0InjectEvent: Injecting interrupt %d at %VGv error code=%08x CR2=%08x intInfo=%08x\n", iGate, pCtx->eip, errCode, pCtx->cr2, intInfo));
284	else
285	if (iGate < 0x20)
286	Log2(("VMXR0InjectEvent: Injecting interrupt %d at %VGv error code=%08x\n", iGate, pCtx->eip, errCode));
287	else
288	{
289	Log2(("INJ-EI: %x at %VGv\n", iGate, pCtx->eip));
290	Assert(!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS));
291	Assert(pCtx->eflags.u32 & X86_EFL_IF);
292	}
293	#endif
294
295	/* Set event injection state. */
296	rc = VMXWriteVMCS(VMX_VMCS_CTRL_ENTRY_IRQ_INFO,
297	intInfo \| (1 << VMX_EXIT_INTERRUPTION_INFO_VALID_SHIFT)
298	);
299
300	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_ENTRY_INSTR_LENGTH, cbInstr);
301	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_ENTRY_EXCEPTION_ERRCODE, errCode);
302
303	AssertRC(rc);
304	return rc;
305	}
306
307
308	/**
309	* Checks for pending guest interrupts and injects them
310	*
311	* @returns VBox status code.
312	* @param pVM The VM to operate on.
313	* @param pCtx CPU Context
314	*/
315	static int VMXR0CheckPendingInterrupt(PVM pVM, CPUMCTX *pCtx)
316	{
317	int rc;
318
319	/* Dispatch any pending interrupts. (injected before, but a VM exit occurred prematurely) */
320	if (pVM->hwaccm.s.Event.fPending)
321	{
322	Log(("Reinjecting event %VX64 %08x at %VGv\n", pVM->hwaccm.s.Event.intInfo, pVM->hwaccm.s.Event.errCode, pCtx->eip));
323	STAM_COUNTER_INC(&pVM->hwaccm.s.StatIntReinject);
324	rc = VMXR0InjectEvent(pVM, pCtx, pVM->hwaccm.s.Event.intInfo, 0, pVM->hwaccm.s.Event.errCode);
325	AssertRC(rc);
326
327	pVM->hwaccm.s.Event.fPending = false;
328	return VINF_SUCCESS;
329	}
330
331	/* When external interrupts are pending, we should exit the VM when IF is set. */
332	if ( !TRPMHasTrap(pVM)
333	&& VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)))
334	{
335	if (!(pCtx->eflags.u32 & X86_EFL_IF))
336	{
337	Log2(("Enable irq window exit!\n"));
338	pVM->hwaccm.s.vmx.proc_ctls \|= VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_IRQ_WINDOW_EXIT;
339	rc = VMXWriteVMCS(VMX_VMCS_CTRL_PROC_EXEC_CONTROLS, pVM->hwaccm.s.vmx.proc_ctls);
340	AssertRC(rc);
341	}
342	else
343	if (!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
344	{
345	uint8_t u8Interrupt;
346
347	rc = PDMGetInterrupt(pVM, &u8Interrupt);
348	Log(("Dispatch interrupt: u8Interrupt=%x (%d) rc=%Vrc\n", u8Interrupt, u8Interrupt, rc));
349	if (VBOX_SUCCESS(rc))
350	{
351	rc = TRPMAssertTrap(pVM, u8Interrupt, TRPM_HARDWARE_INT);
352	AssertRC(rc);
353	}
354	else
355	{
356	/* can't happen... */
357	AssertFailed();
358	STAM_COUNTER_INC(&pVM->hwaccm.s.StatSwitchGuestIrq);
359	return VINF_EM_RAW_INTERRUPT_PENDING;
360	}
361	}
362	else
363	Log(("Pending interrupt blocked at %VGv by VM_FF_INHIBIT_INTERRUPTS!!\n", pCtx->eip));
364	}
365
366	#ifdef VBOX_STRICT
367	if (TRPMHasTrap(pVM))
368	{
369	uint8_t u8Vector;
370	rc = TRPMQueryTrapAll(pVM, &u8Vector, 0, 0, 0);
371	AssertRC(rc);
372	}
373	#endif
374
375	if ( pCtx->eflags.u32 & X86_EFL_IF
376	&& (!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
377	&& TRPMHasTrap(pVM)
378	)
379	{
380	uint8_t u8Vector;
381	int rc;
382	TRPMEVENT enmType;
383	RTGCUINTPTR intInfo, errCode;
384
385	/* If a new event is pending, then dispatch it now. */
386	rc = TRPMQueryTrapAll(pVM, &u8Vector, &enmType, &errCode, 0);
387	AssertRC(rc);
388	Assert(pCtx->eflags.Bits.u1IF == 1 \|\| enmType == TRPM_TRAP);
389	Assert(enmType != TRPM_SOFTWARE_INT);
390
391	/* Clear the pending trap. */
392	rc = TRPMResetTrap(pVM);
393	AssertRC(rc);
394
395	intInfo = u8Vector;
396	intInfo \|= (1 << VMX_EXIT_INTERRUPTION_INFO_VALID_SHIFT);
397
398	if (enmType == TRPM_TRAP)
399	{
400	switch (u8Vector) {
401	case 8:
402	case 10:
403	case 11:
404	case 12:
405	case 13:
406	case 14:
407	case 17:
408	/* Valid error codes. */
409	intInfo \|= VMX_EXIT_INTERRUPTION_INFO_ERROR_CODE_VALID;
410	break;
411	default:
412	break;
413	}
414	if (u8Vector == X86_XCPT_BP \|\| u8Vector == X86_XCPT_OF)
415	intInfo \|= (VMX_EXIT_INTERRUPTION_INFO_TYPE_SWEXCPT << VMX_EXIT_INTERRUPTION_INFO_TYPE_SHIFT);
416	else
417	intInfo \|= (VMX_EXIT_INTERRUPTION_INFO_TYPE_HWEXCPT << VMX_EXIT_INTERRUPTION_INFO_TYPE_SHIFT);
418	}
419	else
420	intInfo \|= (VMX_EXIT_INTERRUPTION_INFO_TYPE_EXT << VMX_EXIT_INTERRUPTION_INFO_TYPE_SHIFT);
421
422	STAM_COUNTER_INC(&pVM->hwaccm.s.StatIntInject);
423	rc = VMXR0InjectEvent(pVM, pCtx, intInfo, 0, errCode);
424	AssertRC(rc);
425	} /* if (interrupts can be dispatched) */
426
427	return VINF_SUCCESS;
428	}
429
430	/**
431	* Save the host state
432	*
433	* @returns VBox status code.
434	* @param pVM The VM to operate on.
435	*/
436	HWACCMR0DECL(int) VMXR0SaveHostState(PVM pVM)
437	{
438	int rc = VINF_SUCCESS;
439
440	/*
441	* Host CPU Context
442	*/
443	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_HOST_CONTEXT)
444	{
445	RTIDTR idtr;
446	RTGDTR gdtr;
447	RTSEL SelTR;
448	PX86DESCHC pDesc;
449	uintptr_t trBase;
450
451	/* Control registers */
452	rc = VMXWriteVMCS(VMX_VMCS_HOST_CR0, ASMGetCR0());
453	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_CR3, ASMGetCR3());
454	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_CR4, ASMGetCR4());
455	AssertRC(rc);
456	Log2(("VMX_VMCS_HOST_CR0 %08x\n", ASMGetCR0()));
457	Log2(("VMX_VMCS_HOST_CR3 %VHp\n", ASMGetCR3()));
458	Log2(("VMX_VMCS_HOST_CR4 %08x\n", ASMGetCR4()));
459
460	/* Selector registers. */
461	rc = VMXWriteVMCS(VMX_VMCS_HOST_FIELD_CS, ASMGetCS());
462	/** @note VMX is (again) very picky about the RPL of the selectors here; we'll restore them manually. */
463	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_FIELD_DS, 0);
464	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_FIELD_ES, 0);
465	#if HC_ARCH_BITS == 32
466	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_FIELD_FS, 0);
467	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_FIELD_GS, 0);
468	#endif
469	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_FIELD_SS, ASMGetSS());
470	SelTR = ASMGetTR();
471	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_FIELD_TR, SelTR);
472	AssertRC(rc);
473	Log2(("VMX_VMCS_HOST_FIELD_CS %08x\n", ASMGetCS()));
474	Log2(("VMX_VMCS_HOST_FIELD_DS %08x\n", ASMGetDS()));
475	Log2(("VMX_VMCS_HOST_FIELD_ES %08x\n", ASMGetES()));
476	Log2(("VMX_VMCS_HOST_FIELD_FS %08x\n", ASMGetFS()));
477	Log2(("VMX_VMCS_HOST_FIELD_GS %08x\n", ASMGetGS()));
478	Log2(("VMX_VMCS_HOST_FIELD_SS %08x\n", ASMGetSS()));
479	Log2(("VMX_VMCS_HOST_FIELD_TR %08x\n", ASMGetTR()));
480
481	/* GDTR & IDTR */
482	ASMGetGDTR(&gdtr);
483	rc = VMXWriteVMCS(VMX_VMCS_HOST_GDTR_BASE, gdtr.pGdt);
484	ASMGetIDTR(&idtr);
485	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_IDTR_BASE, idtr.pIdt);
486	AssertRC(rc);
487	Log2(("VMX_VMCS_HOST_GDTR_BASE %VHv\n", gdtr.pGdt));
488	Log2(("VMX_VMCS_HOST_IDTR_BASE %VHv\n", idtr.pIdt));
489
490	/* Save the base address of the TR selector. */
491	if (SelTR > gdtr.cbGdt)
492	{
493	AssertMsgFailed(("Invalid TR selector %x. GDTR.cbGdt=%x\n", SelTR, gdtr.cbGdt));
494	return VERR_VMX_INVALID_HOST_STATE;
495	}
496
497	pDesc = &((PX86DESCHC)gdtr.pGdt)[SelTR >> X86_SEL_SHIFT_HC];
498	#if HC_ARCH_BITS == 64
499	trBase = pDesc->Gen.u16BaseLow \| (pDesc->Gen.u8BaseHigh1 << 16ULL) \| (pDesc->Gen.u8BaseHigh2 << 24ULL) \| ((uintptr_t)pDesc->Gen.u32BaseHigh3 << 32ULL);
500	#else
501	trBase = pDesc->Gen.u16BaseLow \| (pDesc->Gen.u8BaseHigh1 << 16) \| (pDesc->Gen.u8BaseHigh2 << 24);
502	#endif
503	rc = VMXWriteVMCS(VMX_VMCS_HOST_TR_BASE, trBase);
504	AssertRC(rc);
505	Log2(("VMX_VMCS_HOST_TR_BASE %VHv\n", trBase));
506
507	/* FS and GS base. */
508	#if HC_ARCH_BITS == 64
509	Log2(("MSR_K8_FS_BASE = %VHv\n", ASMRdMsr(MSR_K8_FS_BASE)));
510	Log2(("MSR_K8_GS_BASE = %VHv\n", ASMRdMsr(MSR_K8_GS_BASE)));
511	rc = VMXWriteVMCS64(VMX_VMCS_HOST_FS_BASE, ASMRdMsr(MSR_K8_FS_BASE));
512	rc \|= VMXWriteVMCS64(VMX_VMCS_HOST_GS_BASE, ASMRdMsr(MSR_K8_GS_BASE));
513	#endif
514	AssertRC(rc);
515
516	/* Sysenter MSRs. */
517	/** @todo expensive!! */
518	rc = VMXWriteVMCS(VMX_VMCS_HOST_SYSENTER_CS, ASMRdMsr_Low(MSR_IA32_SYSENTER_CS));
519	Log2(("VMX_VMCS_HOST_SYSENTER_CS %08x\n", ASMRdMsr_Low(MSR_IA32_SYSENTER_CS)));
520	#if HC_ARCH_BITS == 32
521	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_SYSENTER_ESP, ASMRdMsr_Low(MSR_IA32_SYSENTER_ESP));
522	rc \|= VMXWriteVMCS(VMX_VMCS_HOST_SYSENTER_EIP, ASMRdMsr_Low(MSR_IA32_SYSENTER_EIP));
523	Log2(("VMX_VMCS_HOST_SYSENTER_EIP %VHv\n", ASMRdMsr_Low(MSR_IA32_SYSENTER_EIP)));
524	Log2(("VMX_VMCS_HOST_SYSENTER_ESP %VHv\n", ASMRdMsr_Low(MSR_IA32_SYSENTER_ESP)));
525	#else
526	Log2(("VMX_VMCS_HOST_SYSENTER_EIP %VHv\n", ASMRdMsr(MSR_IA32_SYSENTER_EIP)));
527	Log2(("VMX_VMCS_HOST_SYSENTER_ESP %VHv\n", ASMRdMsr(MSR_IA32_SYSENTER_ESP)));
528	rc \|= VMXWriteVMCS64(VMX_VMCS_HOST_SYSENTER_ESP, ASMRdMsr(MSR_IA32_SYSENTER_ESP));
529	rc \|= VMXWriteVMCS64(VMX_VMCS_HOST_SYSENTER_EIP, ASMRdMsr(MSR_IA32_SYSENTER_EIP));
530	#endif
531	AssertRC(rc);
532
533	pVM->hwaccm.s.fContextUseFlags &= ~HWACCM_CHANGED_HOST_CONTEXT;
534	}
535	return rc;
536	}
537
538
539	/**
540	* Loads the guest state
541	*
542	* @returns VBox status code.
543	* @param pVM The VM to operate on.
544	* @param pCtx Guest context
545	*/
546	HWACCMR0DECL(int) VMXR0LoadGuestState(PVM pVM, CPUMCTX *pCtx)
547	{
548	int rc = VINF_SUCCESS;
549	RTGCUINTPTR val;
550	X86EFLAGS eflags;
551
552	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
553	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_SEGMENT_REGS)
554	{
555	VMX_WRITE_SELREG(ES, es);
556	AssertRC(rc);
557
558	VMX_WRITE_SELREG(CS, cs);
559	AssertRC(rc);
560
561	VMX_WRITE_SELREG(SS, ss);
562	AssertRC(rc);
563
564	VMX_WRITE_SELREG(DS, ds);
565	AssertRC(rc);
566
567	VMX_WRITE_SELREG(FS, fs);
568	AssertRC(rc);
569
570	VMX_WRITE_SELREG(GS, gs);
571	AssertRC(rc);
572	}
573
574	/* Guest CPU context: LDTR. */
575	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_LDTR)
576	{
577	if (pCtx->ldtr == 0)
578	{
579	rc = VMXWriteVMCS(VMX_VMCS_GUEST_FIELD_LDTR, 0);
580	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_LDTR_LIMIT, 0);
581	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_LDTR_BASE, 0);
582	/** @note vmlaunch will fail with 0 or just 0x02. No idea why. */
583	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_LDTR_ACCESS_RIGHTS, 0x82 /* present, LDT */);
584	}
585	else
586	{
587	rc = VMXWriteVMCS(VMX_VMCS_GUEST_FIELD_LDTR, pCtx->ldtr);
588	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_LDTR_LIMIT, pCtx->ldtrHid.u32Limit);
589	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_LDTR_BASE, pCtx->ldtrHid.u32Base);
590	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_LDTR_ACCESS_RIGHTS, pCtx->ldtrHid.Attr.u);
591	}
592	AssertRC(rc);
593	}
594	/* Guest CPU context: TR. */
595	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_TR)
596	{
597	rc = VMXWriteVMCS(VMX_VMCS_GUEST_FIELD_TR, pCtx->tr);
598
599	/* Real mode emulation using v86 mode with CR4.VME (interrupt redirection using the int bitmap in the TSS) */
600	if (!(pCtx->cr0 & X86_CR0_PROTECTION_ENABLE))
601	{
602	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_TR_LIMIT, sizeof(*pVM->hwaccm.s.vmx.pRealModeTSS));
603	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_TR_BASE, 0);
604	}
605	else
606	{
607	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_TR_LIMIT, pCtx->trHid.u32Limit);
608	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_TR_BASE, pCtx->trHid.u32Base);
609	}
610	val = pCtx->trHid.Attr.u;
611
612	/* The TSS selector must be busy. */
613	if ((val & 0xF) == X86_SEL_TYPE_SYS_286_TSS_AVAIL)
614	val = (val & ~0xF) \| X86_SEL_TYPE_SYS_286_TSS_BUSY;
615	else
616	/* Default even if no TR selector has been set (otherwise vmlaunch will fail!) */
617	val = (val & ~0xF) \| X86_SEL_TYPE_SYS_386_TSS_BUSY;
618
619	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_TR_ACCESS_RIGHTS, val);
620	AssertRC(rc);
621	}
622	/* Guest CPU context: GDTR. */
623	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_GDTR)
624	{
625	rc = VMXWriteVMCS(VMX_VMCS_GUEST_GDTR_LIMIT, pCtx->gdtr.cbGdt);
626	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_GDTR_BASE, pCtx->gdtr.pGdt);
627	AssertRC(rc);
628	}
629	/* Guest CPU context: IDTR. */
630	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_IDTR)
631	{
632	rc = VMXWriteVMCS(VMX_VMCS_GUEST_IDTR_LIMIT, pCtx->idtr.cbIdt);
633	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_IDTR_BASE, pCtx->idtr.pIdt);
634	AssertRC(rc);
635	}
636
637	/*
638	* Sysenter MSRs
639	*/
640	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_SYSENTER_MSR)
641	{
642	rc = VMXWriteVMCS(VMX_VMCS_GUEST_SYSENTER_CS, pCtx->SysEnter.cs);
643	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_SYSENTER_EIP, pCtx->SysEnter.eip);
644	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_SYSENTER_ESP, pCtx->SysEnter.esp);
645	AssertRC(rc);
646	}
647
648	/* Control registers */
649	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR0)
650	{
651	val = pCtx->cr0;
652	rc = VMXWriteVMCS(VMX_VMCS_CTRL_CR0_READ_SHADOW, val);
653	Log2(("Guest CR0-shadow %08x\n", val));
654	if (CPUMIsGuestFPUStateActive(pVM) == false)
655	{
656	/* Always use #NM exceptions to load the FPU/XMM state on demand. */
657	val \|= X86_CR0_TS \| X86_CR0_ET \| X86_CR0_NE \| X86_CR0_MP;
658	}
659	else
660	{
661	Assert(pVM->hwaccm.s.vmx.fResumeVM == true);
662	/** @todo check if we support the old style mess correctly. */
663	if (!(val & X86_CR0_NE))
664	{
665	Log(("Forcing X86_CR0_NE!!!\n"));
666
667	/* Also catch floating point exceptions as we need to report them to the guest in a different way. */
668	if (!pVM->hwaccm.s.fFPUOldStyleOverride)
669	{
670	rc = VMXWriteVMCS(VMX_VMCS_CTRL_EXCEPTION_BITMAP, HWACCM_VMX_TRAP_MASK \| BIT(16));
671	AssertRC(rc);
672	pVM->hwaccm.s.fFPUOldStyleOverride = true;
673	}
674	}
675
676	val \|= X86_CR0_NE; /* always turn on the native mechanism to report FPU errors (old style uses interrupts) */
677	}
678	/* Note: protected mode & paging are always enabled; we use them for emulating real and protected mode without paging too. */
679	val \|= X86_CR0_PE \| X86_CR0_PG;
680
681	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_CR0, val);
682	Log2(("Guest CR0 %08x\n", val));
683	/* CR0 flags owned by the host; if the guests attempts to change them, then
684	* the VM will exit.
685	*/
686	val = X86_CR0_PE /* Must monitor this bit (assumptions are made for real mode emulation) */
687	\| X86_CR0_WP /** @todo do we care? (we do if we start patching the guest) */
688	\| X86_CR0_PG /* Must monitor this bit (assumptions are made for real mode & protected mode without paging emulation) */
689	\| X86_CR0_TS
690	\| X86_CR0_ET
691	\| X86_CR0_NE
692	\| X86_CR0_MP;
693	pVM->hwaccm.s.vmx.cr0_mask = val;
694
695	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_CR0_MASK, val);
696	Log2(("Guest CR0-mask %08x\n", val));
697	AssertRC(rc);
698	}
699	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR4)
700	{
701	/* CR4 */
702	rc = VMXWriteVMCS(VMX_VMCS_CTRL_CR4_READ_SHADOW, pCtx->cr4);
703	Log2(("Guest CR4-shadow %08x\n", pCtx->cr4));
704	/* Set the required bits in cr4 too (currently X86_CR4_VMXE). */
705	val = pCtx->cr4 \| (uint32_t)pVM->hwaccm.s.vmx.msr.vmx_cr4_fixed0;
706	switch(pVM->hwaccm.s.enmShadowMode)
707	{
708	case PGMMODE_REAL: /* Real mode -> emulated using v86 mode */
709	case PGMMODE_PROTECTED: /* Protected mode, no paging -> emulated using identity mapping. */
710	case PGMMODE_32_BIT: /* 32-bit paging. */
711	break;
712
713	case PGMMODE_PAE: /* PAE paging. */
714	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
715	/** @todo use normal 32 bits paging */
716	val \|= X86_CR4_PAE;
717	break;
718
719	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
720	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
721	AssertFailed();
722	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
723
724	default: /* shut up gcc */
725	AssertFailed();
726	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
727	}
728	/* Real mode emulation using v86 mode with CR4.VME (interrupt redirection using the int bitmap in the TSS) */
729	if (!(pCtx->cr0 & X86_CR0_PROTECTION_ENABLE))
730	val \|= X86_CR4_VME;
731
732	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_CR4, val);
733	Log2(("Guest CR4 %08x\n", val));
734	/* CR4 flags owned by the host; if the guests attempts to change them, then
735	* the VM will exit.
736	*/
737	val = X86_CR4_PAE
738	\| X86_CR4_PGE
739	\| X86_CR4_PSE
740	\| X86_CR4_VMXE;
741	pVM->hwaccm.s.vmx.cr4_mask = val;
742
743	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_CR4_MASK, val);
744	Log2(("Guest CR4-mask %08x\n", val));
745	AssertRC(rc);
746	}
747
748	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR3)
749	{
750	/* Save our shadow CR3 register. */
751	val = PGMGetHyperCR3(pVM);
752	rc = VMXWriteVMCS(VMX_VMCS_GUEST_CR3, val);
753	AssertRC(rc);
754	}
755
756	/* Debug registers. */
757	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_DEBUG)
758	{
759	/** @todo DR0-6 */
760	val = pCtx->dr7;
761	val &= ~(BIT(11) \| BIT(12) \| BIT(14) \| BIT(15)); /* must be zero */
762	val \|= 0x400; /* must be one */
763	#ifdef VBOX_STRICT
764	val = 0x400;
765	#endif
766	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_DR7, val);
767	AssertRC(rc);
768
769	/* IA32_DEBUGCTL MSR. */
770	rc = VMXWriteVMCS(VMX_VMCS_GUEST_DEBUGCTL_FULL, 0);
771	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_DEBUGCTL_HIGH, 0);
772	AssertRC(rc);
773
774	/** @todo */
775	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_DEBUG_EXCEPTIONS, 0);
776	AssertRC(rc);
777	}
778
779	/* EIP, ESP and EFLAGS */
780	rc = VMXWriteVMCS(VMX_VMCS_GUEST_RIP, pCtx->eip);
781	rc \|= VMXWriteVMCS(VMX_VMCS_GUEST_RSP, pCtx->esp);
782	AssertRC(rc);
783
784	/* Bits 22-31, 15, 5 & 3 must be zero. Bit 1 must be 1. */
785	eflags = pCtx->eflags;
786	eflags.u32 &= VMX_EFLAGS_RESERVED_0;
787	eflags.u32 \|= VMX_EFLAGS_RESERVED_1;
788
789	/* Real mode emulation using v86 mode with CR4.VME (interrupt redirection using the int bitmap in the TSS) */
790	if (!(pCtx->cr0 & X86_CR0_PROTECTION_ENABLE))
791	{
792	eflags.Bits.u1VM = 1;
793	eflags.Bits.u1VIF = pCtx->eflags.Bits.u1IF;
794	eflags.Bits.u2IOPL = 3;
795	}
796
797	rc = VMXWriteVMCS(VMX_VMCS_GUEST_RFLAGS, eflags.u32);
798	AssertRC(rc);
799
800	/** TSC offset. */
801	uint64_t u64TSCOffset;
802
803	if (TMCpuTickCanUseRealTSC(pVM, &u64TSCOffset))
804	{
805	/* Note: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_RDTSC_EXIT takes precedence over TSC_OFFSET */
806	#if HC_ARCH_BITS == 64
807	rc = VMXWriteVMCS(VMX_VMCS_CTRL_TSC_OFFSET_FULL, u64TSCOffset);
808	#else
809	rc = VMXWriteVMCS(VMX_VMCS_CTRL_TSC_OFFSET_FULL, (uint32_t)u64TSCOffset);
810	rc \|= VMXWriteVMCS(VMX_VMCS_CTRL_TSC_OFFSET_HIGH, (uint32_t)(u64TSCOffset >> 32ULL));
811	#endif
812	AssertRC(rc);
813
814	pVM->hwaccm.s.vmx.proc_ctls &= ~VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_RDTSC_EXIT;
815	rc = VMXWriteVMCS(VMX_VMCS_CTRL_PROC_EXEC_CONTROLS, pVM->hwaccm.s.vmx.proc_ctls);
816	AssertRC(rc);
817	}
818	else
819	{
820	pVM->hwaccm.s.vmx.proc_ctls \|= VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_RDTSC_EXIT;
821	rc = VMXWriteVMCS(VMX_VMCS_CTRL_PROC_EXEC_CONTROLS, pVM->hwaccm.s.vmx.proc_ctls);
822	AssertRC(rc);
823	}
824
825	/* Done. */
826	pVM->hwaccm.s.fContextUseFlags &= ~HWACCM_CHANGED_ALL_GUEST;
827
828	return rc;
829	}
830
831	/**
832	* Runs guest code in a VMX VM.
833	*
834	* @note NEVER EVER turn on interrupts here. Due to our illegal entry into the kernel, it might mess things up. (XP kernel traps have been frequently observed)
835	*
836	* @returns VBox status code.
837	* @param pVM The VM to operate on.
838	* @param pCtx Guest context
839	*/
840	HWACCMR0DECL(int) VMXR0RunGuestCode(PVM pVM, CPUMCTX *pCtx)
841	{
842	int rc = VINF_SUCCESS;
843	RTCCUINTREG val, valShadow;
844	RTCCUINTREG exitReason, instrError, cbInstr;
845	RTGCUINTPTR exitQualification;
846	RTGCUINTPTR intInfo = 0; /* shut up buggy gcc 4 */
847	RTGCUINTPTR errCode, instrInfo, uInterruptState;
848	bool fGuestStateSynced = false;
849
850	Log2(("\nE"));
851
852	STAM_PROFILE_ADV_START(&pVM->hwaccm.s.StatEntry, x);
853
854	#ifdef VBOX_STRICT
855	rc = VMXReadVMCS(VMX_VMCS_CTRL_PIN_EXEC_CONTROLS, &val);
856	AssertRC(rc);
857	Log2(("VMX_VMCS_CTRL_PIN_EXEC_CONTROLS = %08x\n", val));
858
859	/* allowed zero */
860	if ((val & (pVM->hwaccm.s.vmx.msr.vmx_pin_ctls & 0xFFFFFFFF)) != (pVM->hwaccm.s.vmx.msr.vmx_pin_ctls & 0xFFFFFFFF))
861	{
862	Log(("Invalid VMX_VMCS_CTRL_PIN_EXEC_CONTROLS: zero\n"));
863	}
864	/* allowed one */
865	if ((val & ~(pVM->hwaccm.s.vmx.msr.vmx_pin_ctls >> 32ULL)) != 0)
866	{
867	Log(("Invalid VMX_VMCS_CTRL_PIN_EXEC_CONTROLS: one\n"));
868	}
869
870	rc = VMXReadVMCS(VMX_VMCS_CTRL_PROC_EXEC_CONTROLS, &val);
871	AssertRC(rc);
872	Log2(("VMX_VMCS_CTRL_PROC_EXEC_CONTROLS = %08x\n", val));
873
874	/* allowed zero */
875	if ((val & (pVM->hwaccm.s.vmx.msr.vmx_proc_ctls & 0xFFFFFFFF)) != (pVM->hwaccm.s.vmx.msr.vmx_proc_ctls & 0xFFFFFFFF))
876	{
877	Log(("Invalid VMX_VMCS_CTRL_PROC_EXEC_CONTROLS: zero\n"));
878	}
879	/* allowed one */
880	if ((val & ~(pVM->hwaccm.s.vmx.msr.vmx_proc_ctls >> 32ULL)) != 0)
881	{
882	Log(("Invalid VMX_VMCS_CTRL_PROC_EXEC_CONTROLS: one\n"));
883	}
884
885	rc = VMXReadVMCS(VMX_VMCS_CTRL_ENTRY_CONTROLS, &val);
886	AssertRC(rc);
887	Log2(("VMX_VMCS_CTRL_ENTRY_CONTROLS = %08x\n", val));
888
889	/* allowed zero */
890	if ((val & (pVM->hwaccm.s.vmx.msr.vmx_entry & 0xFFFFFFFF)) != (pVM->hwaccm.s.vmx.msr.vmx_entry & 0xFFFFFFFF))
891	{
892	Log(("Invalid VMX_VMCS_CTRL_ENTRY_CONTROLS: zero\n"));
893	}
894	/* allowed one */
895	if ((val & ~(pVM->hwaccm.s.vmx.msr.vmx_entry >> 32ULL)) != 0)
896	{
897	Log(("Invalid VMX_VMCS_CTRL_ENTRY_CONTROLS: one\n"));
898	}
899
900	rc = VMXReadVMCS(VMX_VMCS_CTRL_EXIT_CONTROLS, &val);
901	AssertRC(rc);
902	Log2(("VMX_VMCS_CTRL_EXIT_CONTROLS = %08x\n", val));
903
904	/* allowed zero */
905	if ((val & (pVM->hwaccm.s.vmx.msr.vmx_exit & 0xFFFFFFFF)) != (pVM->hwaccm.s.vmx.msr.vmx_exit & 0xFFFFFFFF))
906	{
907	Log(("Invalid VMX_VMCS_CTRL_EXIT_CONTROLS: zero\n"));
908	}
909	/* allowed one */
910	if ((val & ~(pVM->hwaccm.s.vmx.msr.vmx_exit >> 32ULL)) != 0)
911	{
912	Log(("Invalid VMX_VMCS_CTRL_EXIT_CONTROLS: one\n"));
913	}
914	#endif
915
916	#if 0
917	/*
918	* Check if debug registers are armed.
919	*/
920	uint32_t u32DR7 = ASMGetDR7();
921	if (u32DR7 & X86_DR7_ENABLED_MASK)
922	{
923	pVM->cpum.s.fUseFlags \|= CPUM_USE_DEBUG_REGS_HOST;
924	}
925	else
926	pVM->cpum.s.fUseFlags &= ~CPUM_USE_DEBUG_REGS_HOST;
927	#endif
928
929	/* We can jump to this point to resume execution after determining that a VM-exit is innocent.
930	*/
931	ResumeExecution:
932
933	/* Check for irq inhibition due to instruction fusing (sti, mov ss). */
934	if (VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
935	{
936	Log(("VM_FF_INHIBIT_INTERRUPTS at %VGv successor %VGv\n", pCtx->eip, EMGetInhibitInterruptsPC(pVM)));
937	if (pCtx->eip != EMGetInhibitInterruptsPC(pVM))
938	{
939	/** @note we intentionally don't clear VM_FF_INHIBIT_INTERRUPTS here.
940	* Before we are able to execute this instruction in raw mode (iret to guest code) an external interrupt might
941	* force a world switch again. Possibly allowing a guest interrupt to be dispatched in the process. This could
942	* break the guest. Sounds very unlikely, but such timing sensitive problem are not as rare as you might think.
943	*/
944	VM_FF_CLEAR(pVM, VM_FF_INHIBIT_INTERRUPTS);
945	/* Irq inhibition is no longer active; clear the corresponding VMX state. */
946	rc = VMXWriteVMCS(VMX_VMCS_GUEST_INTERRUPTIBILITY_STATE, 0);
947	AssertRC(rc);
948	}
949	}
950	else
951	{
952	/* Irq inhibition is no longer active; clear the corresponding VMX state. */
953	rc = VMXWriteVMCS(VMX_VMCS_GUEST_INTERRUPTIBILITY_STATE, 0);
954	AssertRC(rc);
955	}
956
957	/* Check for pending actions that force us to go back to ring 3. */
958	if (VM_FF_ISPENDING(pVM, VM_FF_TO_R3 \| VM_FF_TIMER))
959	{
960	VM_FF_CLEAR(pVM, VM_FF_TO_R3);
961	STAM_COUNTER_INC(&pVM->hwaccm.s.StatSwitchToR3);
962	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
963	rc = VINF_EM_RAW_TO_R3;
964	goto end;
965	}
966	/* Pending request packets might contain actions that need immediate attention, such as pending hardware interrupts. */
967	if (VM_FF_ISPENDING(pVM, VM_FF_REQUEST))
968	{
969	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
970	rc = VINF_EM_PENDING_REQUEST;
971	goto end;
972	}
973
974	/* When external interrupts are pending, we should exit the VM when IF is set. */
975	/** @note after VM_FF_INHIBIT_INTERRUPTS check!!! */
976	rc = VMXR0CheckPendingInterrupt(pVM, pCtx);
977	if (VBOX_FAILURE(rc))
978	{
979	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
980	goto end;
981	}
982
983	/** @todo check timers?? */
984
985	/* Save the host state first. */
986	rc = VMXR0SaveHostState(pVM);
987	if (rc != VINF_SUCCESS)
988	{
989	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
990	goto end;
991	}
992	/* Load the guest state */
993	rc = VMXR0LoadGuestState(pVM, pCtx);
994	if (rc != VINF_SUCCESS)
995	{
996	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
997	goto end;
998	}
999	fGuestStateSynced = true;
1000
1001	/* Non-register state Guest Context */
1002	/** @todo change me according to cpu state */
1003	rc = VMXWriteVMCS(VMX_VMCS_GUEST_ACTIVITY_STATE, VMX_CMS_GUEST_ACTIVITY_ACTIVE);
1004	AssertRC(rc);
1005
1006	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
1007
1008	/* Manual save and restore:
1009	* - General purpose registers except RIP, RSP
1010	*
1011	* Trashed:
1012	* - CR2 (we don't care)
1013	* - LDTR (reset to 0)
1014	* - DRx (presumably not changed at all)
1015	* - DR7 (reset to 0x400)
1016	* - EFLAGS (reset to BIT(1); not relevant)
1017	*
1018	*/
1019
1020	/* All done! Let's start VM execution. */
1021	STAM_PROFILE_ADV_START(&pVM->hwaccm.s.StatInGC, x);
1022	if (pVM->hwaccm.s.vmx.fResumeVM == false)
1023	rc = VMXStartVM(pCtx);
1024	else
1025	rc = VMXResumeVM(pCtx);
1026
1027	/* In case we execute a goto ResumeExecution later on. */
1028	pVM->hwaccm.s.vmx.fResumeVM = true;
1029
1030	/**
1031	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1032	* IMPORTANT: WE CAN'T DO ANY LOGGING OR OPERATIONS THAT CAN DO A LONGJMP BACK TO RING 3 BEFORE WE'VE SYNCED BACK (MOST OF) THE GUEST STATE
1033	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1034	*/
1035
1036	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatInGC, x);
1037	STAM_PROFILE_ADV_START(&pVM->hwaccm.s.StatExit, x);
1038
1039	switch (rc)
1040	{
1041	case VINF_SUCCESS:
1042	break;
1043
1044	case VERR_VMX_INVALID_VMXON_PTR:
1045	AssertFailed();
1046	goto end;
1047
1048	case VERR_VMX_UNABLE_TO_START_VM:
1049	case VERR_VMX_UNABLE_TO_RESUME_VM:
1050	{
1051	#ifdef VBOX_STRICT
1052	int rc1;
1053
1054	rc1 = VMXReadVMCS(VMX_VMCS_RO_EXIT_REASON, &exitReason);
1055	rc1 \|= VMXReadVMCS(VMX_VMCS_RO_VM_INSTR_ERROR, &instrError);
1056	AssertRC(rc1);
1057	if (rc1 == VINF_SUCCESS)
1058	{
1059	RTGDTR gdtr;
1060	PX86DESCHC pDesc;
1061
1062	ASMGetGDTR(&gdtr);
1063
1064	Log(("Unable to start/resume VM for reason: %x. Instruction error %x\n", (uint32_t)exitReason, (uint32_t)instrError));
1065	Log(("Current stack %08x\n", &rc1));
1066
1067
1068	VMXReadVMCS(VMX_VMCS_GUEST_RIP, &val);
1069	Log(("Old eip %VGv new %VGv\n", pCtx->eip, (RTGCPTR)val));
1070	VMXReadVMCS(VMX_VMCS_CTRL_PIN_EXEC_CONTROLS, &val);
1071	Log(("VMX_VMCS_CTRL_PIN_EXEC_CONTROLS %08x\n", val));
1072	VMXReadVMCS(VMX_VMCS_CTRL_PROC_EXEC_CONTROLS, &val);
1073	Log(("VMX_VMCS_CTRL_PROC_EXEC_CONTROLS %08x\n", val));
1074	VMXReadVMCS(VMX_VMCS_CTRL_ENTRY_CONTROLS, &val);
1075	Log(("VMX_VMCS_CTRL_ENTRY_CONTROLS %08x\n", val));
1076	VMXReadVMCS(VMX_VMCS_CTRL_EXIT_CONTROLS, &val);
1077	Log(("VMX_VMCS_CTRL_EXIT_CONTROLS %08x\n", val));
1078
1079	VMXReadVMCS(VMX_VMCS_HOST_CR0, &val);
1080	Log(("VMX_VMCS_HOST_CR0 %08x\n", val));
1081
1082	VMXReadVMCS(VMX_VMCS_HOST_CR3, &val);
1083	Log(("VMX_VMCS_HOST_CR3 %VHp\n", val));
1084
1085	VMXReadVMCS(VMX_VMCS_HOST_CR4, &val);
1086	Log(("VMX_VMCS_HOST_CR4 %08x\n", val));
1087
1088	VMXReadVMCS(VMX_VMCS_HOST_FIELD_CS, &val);
1089	Log(("VMX_VMCS_HOST_FIELD_CS %08x\n", val));
1090	if (val < gdtr.cbGdt)
1091	{
1092	pDesc = &((PX86DESCHC)gdtr.pGdt)[val >> X86_SEL_SHIFT_HC];
1093	HWACCMR0DumpDescriptor(pDesc, val, "CS: ");
1094	}
1095
1096	VMXReadVMCS(VMX_VMCS_HOST_FIELD_DS, &val);
1097	Log(("VMX_VMCS_HOST_FIELD_DS %08x\n", val));
1098	if (val < gdtr.cbGdt)
1099	{
1100	pDesc = &((PX86DESCHC)gdtr.pGdt)[val >> X86_SEL_SHIFT_HC];
1101	HWACCMR0DumpDescriptor(pDesc, val, "DS: ");
1102	}
1103
1104	VMXReadVMCS(VMX_VMCS_HOST_FIELD_ES, &val);
1105	Log(("VMX_VMCS_HOST_FIELD_ES %08x\n", val));
1106	if (val < gdtr.cbGdt)
1107	{
1108	pDesc = &((PX86DESCHC)gdtr.pGdt)[val >> X86_SEL_SHIFT_HC];
1109	HWACCMR0DumpDescriptor(pDesc, val, "ES: ");
1110	}
1111
1112	VMXReadVMCS(VMX_VMCS_HOST_FIELD_FS, &val);
1113	Log(("VMX_VMCS_HOST_FIELD_FS %08x\n", val));
1114	if (val < gdtr.cbGdt)
1115	{
1116	pDesc = &((PX86DESCHC)gdtr.pGdt)[val >> X86_SEL_SHIFT_HC];
1117	HWACCMR0DumpDescriptor(pDesc, val, "FS: ");
1118	}
1119
1120	VMXReadVMCS(VMX_VMCS_HOST_FIELD_GS, &val);
1121	Log(("VMX_VMCS_HOST_FIELD_GS %08x\n", val));
1122	if (val < gdtr.cbGdt)
1123	{
1124	pDesc = &((PX86DESCHC)gdtr.pGdt)[val >> X86_SEL_SHIFT_HC];
1125	HWACCMR0DumpDescriptor(pDesc, val, "GS: ");
1126	}
1127
1128	VMXReadVMCS(VMX_VMCS_HOST_FIELD_SS, &val);
1129	Log(("VMX_VMCS_HOST_FIELD_SS %08x\n", val));
1130	if (val < gdtr.cbGdt)
1131	{
1132	pDesc = &((PX86DESCHC)gdtr.pGdt)[val >> X86_SEL_SHIFT_HC];
1133	HWACCMR0DumpDescriptor(pDesc, val, "SS: ");
1134	}
1135
1136	VMXReadVMCS(VMX_VMCS_HOST_FIELD_TR, &val);
1137	Log(("VMX_VMCS_HOST_FIELD_TR %08x\n", val));
1138	if (val < gdtr.cbGdt)
1139	{
1140	pDesc = &((PX86DESCHC)gdtr.pGdt)[val >> X86_SEL_SHIFT_HC];
1141	HWACCMR0DumpDescriptor(pDesc, val, "TR: ");
1142	}
1143
1144	VMXReadVMCS(VMX_VMCS_HOST_TR_BASE, &val);
1145	Log(("VMX_VMCS_HOST_TR_BASE %VHv\n", val));
1146
1147	VMXReadVMCS(VMX_VMCS_HOST_GDTR_BASE, &val);
1148	Log(("VMX_VMCS_HOST_GDTR_BASE %VHv\n", val));
1149	VMXReadVMCS(VMX_VMCS_HOST_IDTR_BASE, &val);
1150	Log(("VMX_VMCS_HOST_IDTR_BASE %VHv\n", val));
1151
1152	VMXReadVMCS(VMX_VMCS_HOST_SYSENTER_CS, &val);
1153	Log(("VMX_VMCS_HOST_SYSENTER_CS %08x\n", val));
1154
1155	VMXReadVMCS(VMX_VMCS_HOST_SYSENTER_EIP, &val);
1156	Log(("VMX_VMCS_HOST_SYSENTER_EIP %VHv\n", val));
1157
1158	VMXReadVMCS(VMX_VMCS_HOST_SYSENTER_ESP, &val);
1159	Log(("VMX_VMCS_HOST_SYSENTER_ESP %VHv\n", val));
1160
1161	VMXReadVMCS(VMX_VMCS_HOST_RSP, &val);
1162	Log(("VMX_VMCS_HOST_RSP %VHv\n", val));
1163	VMXReadVMCS(VMX_VMCS_HOST_RIP, &val);
1164	Log(("VMX_VMCS_HOST_RIP %VHv\n", val));
1165
1166	#if HC_ARCH_BITS == 64
1167	Log(("MSR_K6_EFER = %VX64\n", ASMRdMsr(MSR_K6_EFER)));
1168	Log(("MSR_K6_STAR = %VX64\n", ASMRdMsr(MSR_K6_STAR)));
1169	Log(("MSR_K8_LSTAR = %VX64\n", ASMRdMsr(MSR_K8_LSTAR)));
1170	Log(("MSR_K8_CSTAR = %VX64\n", ASMRdMsr(MSR_K8_CSTAR)));
1171	Log(("MSR_K8_SF_MASK = %VX64\n", ASMRdMsr(MSR_K8_SF_MASK)));
1172	#endif
1173	}
1174	#endif /* VBOX_STRICT */
1175	goto end;
1176	}
1177
1178	default:
1179	/* impossible */
1180	AssertFailed();
1181	goto end;
1182	}
1183	/* Success. Query the guest state and figure out what has happened. */
1184
1185	/* Investigate why there was a VM-exit. */
1186	rc = VMXReadVMCS(VMX_VMCS_RO_EXIT_REASON, &exitReason);
1187	STAM_COUNTER_INC(&pVM->hwaccm.s.pStatExitReasonR0[exitReason & MASK_EXITREASON_STAT]);
1188
1189	exitReason &= 0xffff; /* bit 0-15 contain the exit code. */
1190	rc \|= VMXReadVMCS(VMX_VMCS_RO_VM_INSTR_ERROR, &instrError);
1191	rc \|= VMXReadVMCS(VMX_VMCS_RO_EXIT_INSTR_LENGTH, &cbInstr);
1192	rc \|= VMXReadVMCS(VMX_VMCS_RO_EXIT_INTERRUPTION_INFO, &val);
1193	intInfo = val;
1194	rc \|= VMXReadVMCS(VMX_VMCS_RO_EXIT_INTERRUPTION_ERRCODE, &val);
1195	errCode = val; /* might not be valid; depends on VMX_EXIT_INTERRUPTION_INFO_ERROR_CODE_IS_VALID. */
1196	rc \|= VMXReadVMCS(VMX_VMCS_RO_EXIT_INSTR_INFO, &val);
1197	instrInfo = val;
1198	rc \|= VMXReadVMCS(VMX_VMCS_RO_EXIT_QUALIFICATION, &val);
1199	exitQualification = val;
1200	AssertRC(rc);
1201
1202	/* Take care of instruction fusing (sti, mov ss) */
1203	rc \|= VMXReadVMCS(VMX_VMCS_GUEST_INTERRUPTIBILITY_STATE, &val);
1204	uInterruptState = val;
1205	if (uInterruptState != 0)
1206	{
1207	Assert(uInterruptState <= 2); /* only sti & mov ss */
1208	Log(("uInterruptState %x eip=%VGv\n", uInterruptState, pCtx->eip));
1209	EMSetInhibitInterruptsPC(pVM, pCtx->eip);
1210	}
1211	else
1212	VM_FF_CLEAR(pVM, VM_FF_INHIBIT_INTERRUPTS);
1213
1214	/* Let's first sync back eip, esp, and eflags. */
1215	rc = VMXReadVMCS(VMX_VMCS_GUEST_RIP, &val);
1216	AssertRC(rc);
1217	pCtx->eip = val;
1218	rc = VMXReadVMCS(VMX_VMCS_GUEST_RSP, &val);
1219	AssertRC(rc);
1220	pCtx->esp = val;
1221	rc = VMXReadVMCS(VMX_VMCS_GUEST_RFLAGS, &val);
1222	AssertRC(rc);
1223	pCtx->eflags.u32 = val;
1224
1225	/* Real mode emulation using v86 mode with CR4.VME (interrupt redirection using the int bitmap in the TSS) */
1226	if (!(pCtx->cr0 & X86_CR0_PROTECTION_ENABLE))
1227	{
1228	/* Hide our emulation flags */
1229	pCtx->eflags.Bits.u1VM = 0;
1230	pCtx->eflags.Bits.u1IF = pCtx->eflags.Bits.u1VIF;
1231	pCtx->eflags.Bits.u1VIF = 0;
1232	pCtx->eflags.Bits.u2IOPL = 0;
1233	}
1234
1235	/* Control registers. */
1236	VMXReadVMCS(VMX_VMCS_CTRL_CR0_READ_SHADOW, &valShadow);
1237	VMXReadVMCS(VMX_VMCS_GUEST_CR0, &val);
1238	val = (valShadow & pVM->hwaccm.s.vmx.cr0_mask) \| (val & ~pVM->hwaccm.s.vmx.cr0_mask);
1239	CPUMSetGuestCR0(pVM, val);
1240
1241	VMXReadVMCS(VMX_VMCS_CTRL_CR4_READ_SHADOW, &valShadow);
1242	VMXReadVMCS(VMX_VMCS_GUEST_CR4, &val);
1243	val = (valShadow & pVM->hwaccm.s.vmx.cr4_mask) \| (val & ~pVM->hwaccm.s.vmx.cr4_mask);
1244	CPUMSetGuestCR4(pVM, val);
1245
1246	CPUMSetGuestCR2(pVM, ASMGetCR2());
1247
1248	VMXReadVMCS(VMX_VMCS_GUEST_DR7, &val);
1249	CPUMSetGuestDR7(pVM, val);
1250
1251	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
1252	VMX_READ_SELREG(ES, es);
1253	VMX_READ_SELREG(SS, ss);
1254	VMX_READ_SELREG(CS, cs);
1255	VMX_READ_SELREG(DS, ds);
1256	VMX_READ_SELREG(FS, fs);
1257	VMX_READ_SELREG(GS, gs);
1258
1259	/** @note NOW IT'S SAFE FOR LOGGING! */
1260	Log2(("Raw exit reason %08x\n", exitReason));
1261
1262	/* Check if an injected event was interrupted prematurely. */
1263	rc = VMXReadVMCS(VMX_VMCS_RO_IDT_INFO, &val);
1264	AssertRC(rc);
1265	pVM->hwaccm.s.Event.intInfo = VMX_VMCS_CTRL_ENTRY_IRQ_INFO_FROM_EXIT_INT_INFO(val);
1266	if ( VMX_EXIT_INTERRUPTION_INFO_VALID(pVM->hwaccm.s.Event.intInfo)
1267	&& VMX_EXIT_INTERRUPTION_INFO_TYPE(pVM->hwaccm.s.Event.intInfo) != VMX_EXIT_INTERRUPTION_INFO_TYPE_SW)
1268	{
1269	Log(("Pending inject %VX64 at %08x exit=%08x intInfo=%08x exitQualification=%08x\n", pVM->hwaccm.s.Event.intInfo, pCtx->eip, exitReason, intInfo, exitQualification));
1270	pVM->hwaccm.s.Event.fPending = true;
1271	/* Error code present? */
1272	if (VMX_EXIT_INTERRUPTION_INFO_ERROR_CODE_IS_VALID(pVM->hwaccm.s.Event.intInfo))
1273	{
1274	rc = VMXReadVMCS(VMX_VMCS_RO_IDT_ERRCODE, &val);
1275	AssertRC(rc);
1276	pVM->hwaccm.s.Event.errCode = val;
1277	}
1278	else
1279	pVM->hwaccm.s.Event.errCode = 0;
1280	}
1281
1282	#ifdef VBOX_STRICT
1283	if (exitReason == VMX_EXIT_ERR_INVALID_GUEST_STATE)
1284	HWACCMDumpRegs(pCtx);
1285	#endif
1286
1287	Log2(("E%d", exitReason));
1288	Log2(("Exit reason %d, exitQualification %08x\n", exitReason, exitQualification));
1289	Log2(("instrInfo=%d instrError=%d instr length=%d\n", instrInfo, instrError, cbInstr));
1290	Log2(("Interruption error code %d\n", errCode));
1291	Log2(("IntInfo = %08x\n", intInfo));
1292	Log2(("New EIP=%VGv\n", pCtx->eip));
1293
1294	/* Some cases don't need a complete resync of the guest CPU state; handle them here. */
1295	switch (exitReason)
1296	{
1297	case VMX_EXIT_EXCEPTION: /* 0 Exception or non-maskable interrupt (NMI). */
1298	case VMX_EXIT_EXTERNAL_IRQ: /* 1 External interrupt. */
1299	{
1300	uint32_t vector = VMX_EXIT_INTERRUPTION_INFO_VECTOR(intInfo);
1301
1302	if (!VMX_EXIT_INTERRUPTION_INFO_VALID(intInfo))
1303	{
1304	Assert(exitReason == VMX_EXIT_EXTERNAL_IRQ);
1305	/* External interrupt; leave to allow it to be dispatched again. */
1306	rc = VINF_EM_RAW_INTERRUPT;
1307	break;
1308	}
1309	switch (VMX_EXIT_INTERRUPTION_INFO_TYPE(intInfo))
1310	{
1311	case VMX_EXIT_INTERRUPTION_INFO_TYPE_NMI: /* Non-maskable interrupt. */
1312	/* External interrupt; leave to allow it to be dispatched again. */
1313	rc = VINF_EM_RAW_INTERRUPT;
1314	break;
1315
1316	case VMX_EXIT_INTERRUPTION_INFO_TYPE_EXT: /* External hardware interrupt. */
1317	AssertFailed(); /* can't come here; fails the first check. */
1318	break;
1319
1320	case VMX_EXIT_INTERRUPTION_INFO_TYPE_SWEXCPT: /* Software exception. (#BP or #OF) */
1321	Assert(vector == 3 \|\| vector == 4);
1322	/* no break */
1323	case VMX_EXIT_INTERRUPTION_INFO_TYPE_HWEXCPT: /* Hardware exception. */
1324	Log2(("Hardware/software interrupt %d\n", vector));
1325	switch (vector)
1326	{
1327	case X86_XCPT_NM:
1328	{
1329	uint32_t oldCR0;
1330
1331	Log(("#NM fault at %VGv error code %x\n", pCtx->eip, errCode));
1332
1333	/** @todo don't intercept #NM exceptions anymore when we've activated the guest FPU state. */
1334	oldCR0 = ASMGetCR0();
1335	/* If we sync the FPU/XMM state on-demand, then we can continue execution as if nothing has happened. */
1336	rc = CPUMHandleLazyFPU(pVM);
1337	if (rc == VINF_SUCCESS)
1338	{
1339	Assert(CPUMIsGuestFPUStateActive(pVM));
1340
1341	/* CPUMHandleLazyFPU could have changed CR0; restore it. */
1342	ASMSetCR0(oldCR0);
1343
1344	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitShadowNM);
1345
1346	/* Continue execution. */
1347	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1348	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1349
1350	goto ResumeExecution;
1351	}
1352
1353	Log(("Forward #NM fault to the guest\n"));
1354	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestNM);
1355	rc = VMXR0InjectEvent(pVM, pCtx, VMX_VMCS_CTRL_ENTRY_IRQ_INFO_FROM_EXIT_INT_INFO(intInfo), cbInstr, 0);
1356	AssertRC(rc);
1357	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1358	goto ResumeExecution;
1359	}
1360
1361	case X86_XCPT_PF: /* Page fault */
1362	{
1363	Log2(("Page fault at %VGv error code %x\n", exitQualification ,errCode));
1364	/* Exit qualification contains the linear address of the page fault. */
1365	TRPMAssertTrap(pVM, X86_XCPT_PF, TRPM_TRAP);
1366	TRPMSetErrorCode(pVM, errCode);
1367	TRPMSetFaultAddress(pVM, exitQualification);
1368
1369	/* Forward it to our trap handler first, in case our shadow pages are out of sync. */
1370	rc = PGMTrap0eHandler(pVM, errCode, CPUMCTX2CORE(pCtx), (RTGCPTR)exitQualification);
1371	Log2(("PGMTrap0eHandler %VGv returned %Vrc\n", pCtx->eip, rc));
1372	if (rc == VINF_SUCCESS)
1373	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
1374	Log2(("Shadow page fault at %VGv cr2=%VGv error code %x\n", pCtx->eip, exitQualification ,errCode));
1375	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitShadowPF);
1376
1377	TRPMResetTrap(pVM);
1378
1379	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1380	goto ResumeExecution;
1381	}
1382	else
1383	if (rc == VINF_EM_RAW_GUEST_TRAP)
1384	{ /* A genuine pagefault.
1385	* Forward the trap to the guest by injecting the exception and resuming execution.
1386	*/
1387	Log2(("Forward page fault to the guest\n"));
1388	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestPF);
1389	/* The error code might have been changed. */
1390	errCode = TRPMGetErrorCode(pVM);
1391
1392	TRPMResetTrap(pVM);
1393
1394	/* Now we must update CR2. */
1395	pCtx->cr2 = exitQualification;
1396	rc = VMXR0InjectEvent(pVM, pCtx, VMX_VMCS_CTRL_ENTRY_IRQ_INFO_FROM_EXIT_INT_INFO(intInfo), cbInstr, errCode);
1397	AssertRC(rc);
1398
1399	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1400	goto ResumeExecution;
1401	}
1402	#ifdef VBOX_STRICT
1403	if (rc != VINF_EM_RAW_EMULATE_INSTR)
1404	Log(("PGMTrap0eHandler failed with %d\n", rc));
1405	#endif
1406	/* Need to go back to the recompiler to emulate the instruction. */
1407	TRPMResetTrap(pVM);
1408	break;
1409	}
1410
1411	case X86_XCPT_MF: /* Floating point exception. */
1412	{
1413	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestMF);
1414	if (!(pCtx->cr0 & X86_CR0_NE))
1415	{
1416	/* old style FPU error reporting needs some extra work. */
1417	/** @todo don't fall back to the recompiler, but do it manually. */
1418	rc = VINF_EM_RAW_EMULATE_INSTR;
1419	break;
1420	}
1421	Log(("Trap %x at %VGv\n", vector, pCtx->eip));
1422	rc = VMXR0InjectEvent(pVM, pCtx, VMX_VMCS_CTRL_ENTRY_IRQ_INFO_FROM_EXIT_INT_INFO(intInfo), cbInstr, errCode);
1423	AssertRC(rc);
1424
1425	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1426	goto ResumeExecution;
1427	}
1428
1429	#ifdef VBOX_STRICT
1430	case X86_XCPT_GP: /* General protection failure exception.*/
1431	case X86_XCPT_UD: /* Unknown opcode exception. */
1432	case X86_XCPT_DE: /* Debug exception. */
1433	case X86_XCPT_SS: /* Stack segment exception. */
1434	case X86_XCPT_NP: /* Segment not present exception. */
1435	{
1436	switch(vector)
1437	{
1438	case X86_XCPT_DE:
1439	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestDE);
1440	break;
1441	case X86_XCPT_UD:
1442	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestUD);
1443	break;
1444	case X86_XCPT_SS:
1445	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestSS);
1446	break;
1447	case X86_XCPT_NP:
1448	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestNP);
1449	break;
1450	case X86_XCPT_GP:
1451	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestGP);
1452	break;
1453	}
1454
1455	Log(("Trap %x at %VGv\n", vector, pCtx->eip));
1456	rc = VMXR0InjectEvent(pVM, pCtx, VMX_VMCS_CTRL_ENTRY_IRQ_INFO_FROM_EXIT_INT_INFO(intInfo), cbInstr, errCode);
1457	AssertRC(rc);
1458
1459	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1460	goto ResumeExecution;
1461	}
1462	#endif
1463	default:
1464	AssertMsgFailed(("Unexpected vm-exit caused by exception %x\n", vector));
1465	rc = VERR_EM_INTERNAL_ERROR;
1466	break;
1467	} /* switch (vector) */
1468
1469	break;
1470
1471	default:
1472	rc = VERR_EM_INTERNAL_ERROR;
1473	AssertFailed();
1474	break;
1475	}
1476
1477	break;
1478	}
1479
1480	case VMX_EXIT_IRQ_WINDOW: /* 7 Interrupt window. */
1481	/* Clear VM-exit on IF=1 change. */
1482	Log2(("VMX_EXIT_IRQ_WINDOW %VGv\n", pCtx->eip));
1483	pVM->hwaccm.s.vmx.proc_ctls &= ~VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_IRQ_WINDOW_EXIT;
1484	rc = VMXWriteVMCS(VMX_VMCS_CTRL_PROC_EXEC_CONTROLS, pVM->hwaccm.s.vmx.proc_ctls);
1485	AssertRC(rc);
1486	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitIrqWindow);
1487	goto ResumeExecution; /* we check for pending guest interrupts there */
1488
1489	case VMX_EXIT_INVD: /* 13 Guest software attempted to execute INVD. */
1490	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitInvd);
1491	/* Skip instruction and continue directly. */
1492	pCtx->eip += cbInstr;
1493	/* Continue execution.*/
1494	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1495	goto ResumeExecution;
1496
1497	case VMX_EXIT_CPUID: /* 10 Guest software attempted to execute CPUID. */
1498	{
1499	Log2(("VMX: Cpuid %x\n", pCtx->eax));
1500	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitCpuid);
1501	rc = EMInterpretCpuId(pVM, CPUMCTX2CORE(pCtx));
1502	if (rc == VINF_SUCCESS)
1503	{
1504	/* Update EIP and continue execution. */
1505	Assert(cbInstr == 2);
1506	pCtx->eip += cbInstr;
1507	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1508	goto ResumeExecution;
1509	}
1510	AssertMsgFailed(("EMU: cpuid failed with %Vrc\n", rc));
1511	rc = VINF_EM_RAW_EMULATE_INSTR;
1512	break;
1513	}
1514
1515	case VMX_EXIT_RDTSC: /* 16 Guest software attempted to execute RDTSC. */
1516	{
1517	Log2(("VMX: Rdtsc\n"));
1518	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitRdtsc);
1519	rc = EMInterpretRdtsc(pVM, CPUMCTX2CORE(pCtx));
1520	if (rc == VINF_SUCCESS)
1521	{
1522	/* Update EIP and continue execution. */
1523	Assert(cbInstr == 2);
1524	pCtx->eip += cbInstr;
1525	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1526	goto ResumeExecution;
1527	}
1528	AssertMsgFailed(("EMU: rdtsc failed with %Vrc\n", rc));
1529	rc = VINF_EM_RAW_EMULATE_INSTR;
1530	break;
1531	}
1532
1533	case VMX_EXIT_INVPG: /* 14 Guest software attempted to execute INVPG. */
1534	{
1535	Log2(("VMX: invlpg\n"));
1536	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitInvpg);
1537	rc = EMInterpretInvlpg(pVM, CPUMCTX2CORE(pCtx), exitQualification);
1538	if (rc == VINF_SUCCESS)
1539	{
1540	/* Update EIP and continue execution. */
1541	pCtx->eip += cbInstr;
1542	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1543	goto ResumeExecution;
1544	}
1545	AssertMsgFailed(("EMU: invlpg %VGv failed with %Vrc\n", exitQualification, rc));
1546	rc = VINF_EM_RAW_EMULATE_INSTR;
1547	break;
1548	}
1549
1550	case VMX_EXIT_CRX_MOVE: /* 28 Control-register accesses. */
1551	{
1552	switch (VMX_EXIT_QUALIFICATION_CRX_ACCESS(exitQualification))
1553	{
1554	case VMX_EXIT_QUALIFICATION_CRX_ACCESS_WRITE:
1555	Log2(("VMX: %VGv mov cr%d, x\n", pCtx->eip, VMX_EXIT_QUALIFICATION_CRX_REGISTER(exitQualification)));
1556	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitCRxWrite);
1557	rc = EMInterpretCRxWrite(pVM, CPUMCTX2CORE(pCtx),
1558	VMX_EXIT_QUALIFICATION_CRX_REGISTER(exitQualification),
1559	VMX_EXIT_QUALIFICATION_CRX_GENREG(exitQualification));
1560
1561	switch (VMX_EXIT_QUALIFICATION_CRX_REGISTER(exitQualification))
1562	{
1563	case 0:
1564	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1565	break;
1566	case 2:
1567	break;
1568	case 3:
1569	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR3;
1570	break;
1571	case 4:
1572	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR4;
1573	break;
1574	default:
1575	AssertFailed();
1576	}
1577	/* Check if a sync operation is pending. */
1578	if ( rc == VINF_SUCCESS /* don't bother if we are going to ring 3 anyway */
1579	&& VM_FF_ISPENDING(pVM, VM_FF_PGM_SYNC_CR3 \| VM_FF_PGM_SYNC_CR3_NON_GLOBAL))
1580	{
1581	rc = PGMSyncCR3(pVM, CPUMGetGuestCR0(pVM), CPUMGetGuestCR3(pVM), CPUMGetGuestCR4(pVM), VM_FF_ISSET(pVM, VM_FF_PGM_SYNC_CR3));
1582	AssertRC(rc);
1583	}
1584	break;
1585
1586	case VMX_EXIT_QUALIFICATION_CRX_ACCESS_READ:
1587	Log2(("VMX: mov x, crx\n"));
1588	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitCRxRead);
1589	rc = EMInterpretCRxRead(pVM, CPUMCTX2CORE(pCtx),
1590	VMX_EXIT_QUALIFICATION_CRX_GENREG(exitQualification),
1591	VMX_EXIT_QUALIFICATION_CRX_REGISTER(exitQualification));
1592	break;
1593
1594	case VMX_EXIT_QUALIFICATION_CRX_ACCESS_CLTS:
1595	Log2(("VMX: clts\n"));
1596	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitCLTS);
1597	rc = EMInterpretCLTS(pVM);
1598	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1599	break;
1600
1601	case VMX_EXIT_QUALIFICATION_CRX_ACCESS_LMSW:
1602	Log2(("VMX: lmsw %x\n", VMX_EXIT_QUALIFICATION_CRX_LMSW_DATA(exitQualification)));
1603	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitLMSW);
1604	rc = EMInterpretLMSW(pVM, VMX_EXIT_QUALIFICATION_CRX_LMSW_DATA(exitQualification));
1605	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1606	break;
1607	}
1608
1609	/* Update EIP if no error occurred. */
1610	if (VBOX_SUCCESS(rc))
1611	pCtx->eip += cbInstr;
1612
1613	if (rc == VINF_SUCCESS)
1614	{
1615	/* Only resume if successful. */
1616	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1617	goto ResumeExecution;
1618	}
1619	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1620	if (rc == VERR_EM_INTERPRETER)
1621	rc = VINF_EM_RAW_EMULATE_INSTR;
1622	break;
1623	}
1624
1625	case VMX_EXIT_DRX_MOVE: /* 29 Debug-register accesses. */
1626	{
1627	/** @todo clear VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MOV_DR_EXIT after the first time and restore drx registers afterwards */
1628	if (VMX_EXIT_QUALIFICATION_DRX_DIRECTION(exitQualification) == VMX_EXIT_QUALIFICATION_DRX_DIRECTION_WRITE)
1629	{
1630	Log2(("VMX: mov drx%d, genreg%d\n", VMX_EXIT_QUALIFICATION_DRX_REGISTER(exitQualification), VMX_EXIT_QUALIFICATION_DRX_GENREG(exitQualification)));
1631	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitDRxWrite);
1632	rc = EMInterpretDRxWrite(pVM, CPUMCTX2CORE(pCtx),
1633	VMX_EXIT_QUALIFICATION_DRX_REGISTER(exitQualification),
1634	VMX_EXIT_QUALIFICATION_DRX_GENREG(exitQualification));
1635	Log2(("DR7=%08x\n", pCtx->dr7));
1636	}
1637	else
1638	{
1639	Log2(("VMX: mov x, drx\n"));
1640	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitDRxRead);
1641	rc = EMInterpretDRxRead(pVM, CPUMCTX2CORE(pCtx),
1642	VMX_EXIT_QUALIFICATION_DRX_GENREG(exitQualification),
1643	VMX_EXIT_QUALIFICATION_DRX_REGISTER(exitQualification));
1644	}
1645	/* Update EIP if no error occurred. */
1646	if (VBOX_SUCCESS(rc))
1647	pCtx->eip += cbInstr;
1648
1649	if (rc == VINF_SUCCESS)
1650	{
1651	/* Only resume if successful. */
1652	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1653	goto ResumeExecution;
1654	}
1655	Assert(rc == VERR_EM_INTERPRETER);
1656	rc = VINF_EM_RAW_EMULATE_INSTR;
1657	break;
1658	}
1659
1660	/** @note We'll get a #GP if the IO instruction isn't allowed (IOPL or TSS bitmap); no need to double check. */
1661	case VMX_EXIT_PORT_IO: /* 30 I/O instruction. */
1662	{
1663	uint32_t uIOWidth = VMX_EXIT_QUALIFICATION_IO_WIDTH(exitQualification);
1664	uint32_t uPort;
1665	bool fIOWrite = (VMX_EXIT_QUALIFICATION_IO_DIRECTION(exitQualification) == VMX_EXIT_QUALIFICATION_IO_DIRECTION_OUT);
1666
1667	/** @todo necessary to make the distinction? */
1668	if (VMX_EXIT_QUALIFICATION_IO_ENCODING(exitQualification) == VMX_EXIT_QUALIFICATION_IO_ENCODING_DX)
1669	{
1670	uPort = pCtx->edx & 0xffff;
1671	}
1672	else
1673	uPort = VMX_EXIT_QUALIFICATION_IO_PORT(exitQualification); /* Immediate encoding. */
1674
1675	/* paranoia */
1676	if (RT_UNLIKELY(uIOWidth == 2 \|\| uIOWidth >= 4))
1677	{
1678	rc = fIOWrite ? VINF_IOM_HC_IOPORT_WRITE : VINF_IOM_HC_IOPORT_READ;
1679	break;
1680	}
1681
1682	uint32_t cbSize = aIOSize[uIOWidth];
1683
1684	if (VMX_EXIT_QUALIFICATION_IO_STRING(exitQualification))
1685	{
1686	/* ins/outs */
1687	uint32_t prefix = 0;
1688	if (VMX_EXIT_QUALIFICATION_IO_REP(exitQualification))
1689	prefix \|= PREFIX_REP;
1690
1691	if (fIOWrite)
1692	{
1693	Log2(("IOMInterpretOUTSEx %VGv %x size=%d\n", pCtx->eip, uPort, cbSize));
1694	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitIOStringWrite);
1695	rc = IOMInterpretOUTSEx(pVM, CPUMCTX2CORE(pCtx), uPort, prefix, cbSize);
1696	}
1697	else
1698	{
1699	Log2(("IOMInterpretINSEx %VGv %x size=%d\n", pCtx->eip, uPort, cbSize));
1700	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitIOStringRead);
1701	rc = IOMInterpretINSEx(pVM, CPUMCTX2CORE(pCtx), uPort, prefix, cbSize);
1702	}
1703	}
1704	else
1705	{
1706	/* normal in/out */
1707	uint32_t uAndVal = aIOOpAnd[uIOWidth];
1708
1709	Assert(!VMX_EXIT_QUALIFICATION_IO_REP(exitQualification));
1710
1711	if (fIOWrite)
1712	{
1713	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitIOWrite);
1714	rc = IOMIOPortWrite(pVM, uPort, pCtx->eax & uAndVal, cbSize);
1715	}
1716	else
1717	{
1718	uint32_t u32Val = 0;
1719
1720	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitIORead);
1721	rc = IOMIOPortRead(pVM, uPort, &u32Val, cbSize);
1722	if ( rc == VINF_SUCCESS
1723	\|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
1724	{
1725	/* Write back to the EAX register. */
1726	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
1727	}
1728	}
1729	}
1730	/*
1731	* Handled the I/O return codes.
1732	* (The unhandled cases end up with rc == VINF_EM_RESCHEDULE_REM.)
1733	*/
1734	if (IOM_SUCCESS(rc))
1735	{
1736	/* Update EIP and continue execution. */
1737	pCtx->eip += cbInstr;
1738	if (RT_LIKELY(rc == VINF_SUCCESS))
1739	{
1740	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1741	goto ResumeExecution;
1742	}
1743	break;
1744	}
1745	#ifdef VBOX_STRICT
1746	if (rc == VINF_IOM_HC_IOPORT_READ)
1747	Assert(!fIOWrite);
1748	else if (rc == VINF_IOM_HC_IOPORT_WRITE)
1749	Assert(fIOWrite);
1750	else
1751	AssertMsg(VBOX_FAILURE(rc) \|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_TRPM_XCPT_DISPATCHED \|\| rc == VINF_EM_RESCHEDULE_REM, ("%Vrc\n", rc));
1752	#endif
1753	break;
1754	}
1755
1756	default:
1757	/* The rest is handled after syncing the entire CPU state. */
1758	break;
1759	}
1760
1761	/* Note: the guest state isn't entirely synced back at this stage. */
1762
1763	/* Investigate why there was a VM-exit. (part 2) */
1764	switch (exitReason)
1765	{
1766	case VMX_EXIT_EXCEPTION: /* 0 Exception or non-maskable interrupt (NMI). */
1767	case VMX_EXIT_EXTERNAL_IRQ: /* 1 External interrupt. */
1768	/* Already handled above. */
1769	break;
1770
1771	case VMX_EXIT_TRIPLE_FAULT: /* 2 Triple fault. */
1772	rc = VINF_EM_RESET; /* Triple fault equals a reset. */
1773	break;
1774
1775	case VMX_EXIT_INIT_SIGNAL: /* 3 INIT signal. */
1776	case VMX_EXIT_SIPI: /* 4 Start-up IPI (SIPI). */
1777	rc = VINF_EM_RAW_INTERRUPT;
1778	AssertFailed(); /* Can't happen. Yet. */
1779	break;
1780
1781	case VMX_EXIT_IO_SMI_IRQ: /* 5 I/O system-management interrupt (SMI). */
1782	case VMX_EXIT_SMI_IRQ: /* 6 Other SMI. */
1783	rc = VINF_EM_RAW_INTERRUPT;
1784	AssertFailed(); /* Can't happen afaik. */
1785	break;
1786
1787	case VMX_EXIT_TASK_SWITCH: /* 9 Task switch. */
1788	rc = VINF_EM_RAW_RING_SWITCH_INT;
1789	break;
1790
1791	case VMX_EXIT_HLT: /* 12 Guest software attempted to execute HLT. */
1792	/** Check if external interrupts are pending; if so, don't switch back. */
1793	if (VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)))
1794	{
1795	pCtx->eip++; /* skip hlt */
1796	goto ResumeExecution;
1797	}
1798
1799	rc = VINF_EM_RAW_EMULATE_INSTR_HLT;
1800	break;
1801
1802	case VMX_EXIT_RSM: /* 17 Guest software attempted to execute RSM in SMM. */
1803	AssertFailed(); /* can't happen. */
1804	rc = VINF_EM_RAW_EXCEPTION_PRIVILEGED;
1805	break;
1806
1807	case VMX_EXIT_VMCALL: /* 18 Guest software executed VMCALL. */
1808	case VMX_EXIT_VMCLEAR: /* 19 Guest software executed VMCLEAR. */
1809	case VMX_EXIT_VMLAUNCH: /* 20 Guest software executed VMLAUNCH. */
1810	case VMX_EXIT_VMPTRLD: /* 21 Guest software executed VMPTRLD. */
1811	case VMX_EXIT_VMPTRST: /* 22 Guest software executed VMPTRST. */
1812	case VMX_EXIT_VMREAD: /* 23 Guest software executed VMREAD. */
1813	case VMX_EXIT_VMRESUME: /* 24 Guest software executed VMRESUME. */
1814	case VMX_EXIT_VMWRITE: /* 25 Guest software executed VMWRITE. */
1815	case VMX_EXIT_VMXOFF: /* 26 Guest software executed VMXOFF. */
1816	case VMX_EXIT_VMXON: /* 27 Guest software executed VMXON. */
1817	/** @todo inject #UD immediately */
1818	rc = VINF_EM_RAW_EXCEPTION_PRIVILEGED;
1819	break;
1820
1821	case VMX_EXIT_CPUID: /* 10 Guest software attempted to execute CPUID. */
1822	case VMX_EXIT_RDTSC: /* 16 Guest software attempted to execute RDTSC. */
1823	case VMX_EXIT_INVPG: /* 14 Guest software attempted to execute INVPG. */
1824	case VMX_EXIT_CRX_MOVE: /* 28 Control-register accesses. */
1825	case VMX_EXIT_DRX_MOVE: /* 29 Debug-register accesses. */
1826	case VMX_EXIT_PORT_IO: /* 30 I/O instruction. */
1827	/* already handled above */
1828	AssertMsg(rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_EM_RAW_INTERRUPT \|\| rc == VINF_EM_RAW_EMULATE_INSTR \|\| rc == VINF_PGM_SYNC_CR3 \|\| rc == VINF_IOM_HC_IOPORT_READ \|\| rc == VINF_IOM_HC_IOPORT_WRITE
1829	\|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_TRPM_XCPT_DISPATCHED \|\| rc == VINF_EM_RESCHEDULE_REM, ("rc = %d\n", rc));
1830	break;
1831
1832	case VMX_EXIT_RDPMC: /* 15 Guest software attempted to execute RDPMC. */
1833	case VMX_EXIT_RDMSR: /* 31 RDMSR. Guest software attempted to execute RDMSR. */
1834	case VMX_EXIT_WRMSR: /* 32 WRMSR. Guest software attempted to execute WRMSR. */
1835	case VMX_EXIT_MWAIT: /* 36 Guest software executed MWAIT. */
1836	case VMX_EXIT_MONITOR: /* 39 Guest software attempted to execute MONITOR. */
1837	case VMX_EXIT_PAUSE: /* 40 Guest software attempted to execute PAUSE. */
1838	rc = VINF_EM_RAW_EXCEPTION_PRIVILEGED;
1839	break;
1840
1841	case VMX_EXIT_IRQ_WINDOW: /* 7 Interrupt window. */
1842	Assert(rc == VINF_EM_RAW_INTERRUPT);
1843	break;
1844
1845	case VMX_EXIT_TPR: /* 43 TPR below threshold. Guest software executed MOV to CR8. */
1846	case VMX_EXIT_ERR_INVALID_GUEST_STATE: /* 33 VM-entry failure due to invalid guest state. */
1847	case VMX_EXIT_ERR_MSR_LOAD: /* 34 VM-entry failure due to MSR loading. */
1848	case VMX_EXIT_ERR_MACHINE_CHECK: /* 41 VM-entry failure due to machine-check. */
1849	default:
1850	rc = VERR_EM_INTERNAL_ERROR;
1851	AssertMsgFailed(("Unexpected exit code %d\n", exitReason)); /* Can't happen. */
1852	break;
1853
1854	}
1855	end:
1856	if (fGuestStateSynced)
1857	{
1858	/* Remaining guest CPU context: TR, IDTR, GDTR, LDTR. */
1859	VMX_READ_SELREG(LDTR, ldtr);
1860	VMX_READ_SELREG(TR, tr);
1861
1862	VMXReadVMCS(VMX_VMCS_GUEST_GDTR_LIMIT, &val);
1863	pCtx->gdtr.cbGdt = val;
1864	VMXReadVMCS(VMX_VMCS_GUEST_GDTR_BASE, &val);
1865	pCtx->gdtr.pGdt = val;
1866
1867	VMXReadVMCS(VMX_VMCS_GUEST_IDTR_LIMIT, &val);
1868	pCtx->idtr.cbIdt = val;
1869	VMXReadVMCS(VMX_VMCS_GUEST_IDTR_BASE, &val);
1870	pCtx->idtr.pIdt = val;
1871
1872	/*
1873	* System MSRs
1874	*/
1875	VMXReadVMCS(VMX_VMCS_GUEST_SYSENTER_CS, &val);
1876	pCtx->SysEnter.cs = val;
1877	VMXReadVMCS(VMX_VMCS_GUEST_SYSENTER_EIP, &val);
1878	pCtx->SysEnter.eip = val;
1879	VMXReadVMCS(VMX_VMCS_GUEST_SYSENTER_ESP, &val);
1880	pCtx->SysEnter.esp = val;
1881	}
1882
1883	/* Signal changes for the recompiler. */
1884	CPUMSetChangedFlags(pVM, CPUM_CHANGED_SYSENTER_MSR \| CPUM_CHANGED_LDTR \| CPUM_CHANGED_GDTR \| CPUM_CHANGED_IDTR \| CPUM_CHANGED_TR \| CPUM_CHANGED_HIDDEN_SEL_REGS);
1885
1886	/* If we executed vmlaunch/vmresume and an external irq was pending, then we don't have to do a full sync the next time. */
1887	if ( exitReason == VMX_EXIT_EXTERNAL_IRQ
1888	&& !VMX_EXIT_INTERRUPTION_INFO_VALID(intInfo))
1889	{
1890	STAM_COUNTER_INC(&pVM->hwaccm.s.StatPendingHostIrq);
1891	/* On the next entry we'll only sync the host context. */
1892	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_HOST_CONTEXT;
1893	}
1894	else
1895	{
1896	/* On the next entry we'll sync everything. */
1897	/** @todo we can do better than this */
1898	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_ALL;
1899	}
1900
1901	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1902	Log2(("X"));
1903	return rc;
1904	}
1905
1906
1907	/**
1908	* Enable VMX
1909	*
1910	* @returns VBox status code.
1911	* @param pVM The VM to operate on.
1912	*/
1913	HWACCMR0DECL(int) VMXR0Enable(PVM pVM)
1914	{
1915	Assert(pVM->hwaccm.s.vmx.fSupported);
1916
1917	/* Make sure the VMX instructions don't cause #UD faults. */
1918	ASMSetCR4(ASMGetCR4() \| X86_CR4_VMXE);
1919
1920	/* Enter VMX Root Mode */
1921	int rc = VMXEnable(pVM->hwaccm.s.vmx.pVMXONPhys);
1922	if (VBOX_FAILURE(rc))
1923	return rc;
1924
1925	/* Activate the VM Control Structure. */
1926	rc = VMXActivateVMCS(pVM->hwaccm.s.vmx.pVMCSPhys);
1927	if (VBOX_FAILURE(rc))
1928	{
1929	/* Leave VMX Root Mode. */
1930	VMXDisable();
1931	return rc;
1932	}
1933	pVM->hwaccm.s.vmx.fResumeVM = false;
1934	return VINF_SUCCESS;
1935	}
1936
1937
1938	/**
1939	* Disable VMX
1940	*
1941	* @returns VBox status code.
1942	* @param pVM The VM to operate on.
1943	*/
1944	HWACCMR0DECL(int) VMXR0Disable(PVM pVM)
1945	{
1946	Assert(pVM->hwaccm.s.vmx.fSupported);
1947
1948	/* Clear VM Control Structure. Marking it inactive, clearing implementation specific data and writing back VMCS data to memory. */
1949	int rc = VMXClearVMCS(pVM->hwaccm.s.vmx.pVMCSPhys);
1950	AssertRC(rc);
1951
1952	/* Leave VMX Root Mode. */
1953	VMXDisable();
1954
1955	return VINF_SUCCESS;
1956	}
1957

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source: vbox/trunk/src/VBox/VMM/VMMR0/HWVMXR0.cpp@ 3168

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