VirtualBox

source: vbox/trunk/src/VBox/VMM/HWACCM.cpp@ 23

Last change on this file since 23 was 23, checked in by vboxsync, 18 years ago

string.h & stdio.h + header cleanups.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 23.2 KB
Line 
1/* $Id: HWACCM.cpp 23 2007-01-15 14:08:28Z vboxsync $ */
2/** @file
3 * HWACCM - Intel/AMD VM Hardware Support Manager
4 */
5
6/*
7 * Copyright (C) 2006 InnoTek Systemberatung 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* Header Files *
24*******************************************************************************/
25#define LOG_GROUP LOG_GROUP_HWACCM
26#include <VBox/cpum.h>
27#include <VBox/stam.h>
28#include <VBox/mm.h>
29#include <VBox/pdm.h>
30#include <VBox/pgm.h>
31#include <VBox/trpm.h>
32#include <VBox/dbgf.h>
33#include <VBox/hwacc_vmx.h>
34#include <VBox/hwacc_svm.h>
35#include "HWACCMInternal.h"
36#include <VBox/vm.h>
37#include <VBox/err.h>
38#include <VBox/param.h>
39#include <VBox/patm.h>
40#include <VBox/csam.h>
41#include <VBox/selm.h>
42
43#include <iprt/assert.h>
44#include <VBox/log.h>
45#include <iprt/asm.h>
46#include <iprt/string.h>
47#include <iprt/thread.h>
48#include "x86context.h"
49
50
51/*******************************************************************************
52* Internal Functions *
53*******************************************************************************/
54static DECLCALLBACK(int) hwaccmR3Save(PVM pVM, PSSMHANDLE pSSM);
55static DECLCALLBACK(int) hwaccmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version);
56
57
58/**
59 * Initializes the HWACCM.
60 *
61 * @returns VBox status code.
62 * @param pVM The VM to operate on.
63 */
64HWACCMR3DECL(int) HWACCMR3Init(PVM pVM)
65{
66 LogFlow(("HWACCMR3Init\n"));
67
68 /*
69 * Assert alignment and sizes.
70 */
71 AssertRelease(!(RT_OFFSETOF(VM, hwaccm.s) & 31));
72 AssertRelease(sizeof(pVM->hwaccm.s) <= sizeof(pVM->hwaccm.padding));
73
74 /* Some structure checks. */
75 AssertMsg(RT_OFFSETOF(SVM_VMCB, u8Reserved3) == 0xC0, ("u8Reserved3 offset = %x\n", RT_OFFSETOF(SVM_VMCB, u8Reserved3)));
76 AssertMsg(RT_OFFSETOF(SVM_VMCB, ctrl.EventInject) == 0xA8, ("ctrl.EventInject offset = %x\n", RT_OFFSETOF(SVM_VMCB, ctrl.EventInject)));
77 AssertMsg(RT_OFFSETOF(SVM_VMCB, ctrl.ExitIntInfo) == 0x88, ("ctrl.ExitIntInfo offset = %x\n", RT_OFFSETOF(SVM_VMCB, ctrl.ExitIntInfo)));
78 AssertMsg(RT_OFFSETOF(SVM_VMCB, ctrl.TLBCtrl) == 0x58, ("ctrl.TLBCtrl offset = %x\n", RT_OFFSETOF(SVM_VMCB, ctrl.TLBCtrl)));
79
80 AssertMsg(RT_OFFSETOF(SVM_VMCB, guest) == 0x400, ("guest offset = %x\n", RT_OFFSETOF(SVM_VMCB, guest)));
81 AssertMsg(RT_OFFSETOF(SVM_VMCB, guest.u8Reserved4) == 0x4A0, ("guest.u8Reserved4 offset = %x\n", RT_OFFSETOF(SVM_VMCB, guest.u8Reserved4)));
82 AssertMsg(RT_OFFSETOF(SVM_VMCB, guest.u8Reserved6) == 0x4D8, ("guest.u8Reserved6 offset = %x\n", RT_OFFSETOF(SVM_VMCB, guest.u8Reserved6)));
83 AssertMsg(RT_OFFSETOF(SVM_VMCB, guest.u8Reserved7) == 0x580, ("guest.u8Reserved7 offset = %x\n", RT_OFFSETOF(SVM_VMCB, guest.u8Reserved7)));
84 AssertMsg(RT_OFFSETOF(SVM_VMCB, guest.u8Reserved9) == 0x648, ("guest.u8Reserved9 offset = %x\n", RT_OFFSETOF(SVM_VMCB, guest.u8Reserved9)));
85 AssertMsg(RT_OFFSETOF(SVM_VMCB, u8Reserved10) == 0x698, ("u8Reserved3 offset = %x\n", RT_OFFSETOF(SVM_VMCB, u8Reserved10)));
86 AssertMsg(sizeof(SVM_VMCB) == 0x1000, ("SVM_VMCB size = %x\n", sizeof(SVM_VMCB)));
87
88
89 /*
90 * Register the saved state data unit.
91 */
92 int rc = SSMR3RegisterInternal(pVM, "HWACCM", 0, HWACCM_SSM_VERSION, sizeof(HWACCM),
93 NULL, hwaccmR3Save, NULL,
94 NULL, hwaccmR3Load, NULL);
95 if (VBOX_FAILURE(rc))
96 return rc;
97
98 /** @todo Make sure both pages are either not accessible or readonly! */
99 /* Allocate one page for VMXON. */
100 pVM->hwaccm.s.vmx.pVMXON = SUPContAlloc(PAGE_SIZE, &pVM->hwaccm.s.vmx.pVMXONPhys);
101 if (pVM->hwaccm.s.vmx.pVMXON == 0)
102 {
103 AssertMsgFailed(("SUPContAlloc failed!!\n"));
104 return VERR_NO_MEMORY;
105 }
106 memset(pVM->hwaccm.s.vmx.pVMXON, 0, PAGE_SIZE);
107
108 /* Allocate one page for the VM control structure (VMCS). */
109 pVM->hwaccm.s.vmx.pVMCS = SUPContAlloc(PAGE_SIZE, &pVM->hwaccm.s.vmx.pVMCSPhys);
110 if (pVM->hwaccm.s.vmx.pVMCS == 0)
111 {
112 AssertMsgFailed(("SUPContAlloc failed!!\n"));
113 return VERR_NO_MEMORY;
114 }
115 memset(pVM->hwaccm.s.vmx.pVMCS, 0, PAGE_SIZE);
116
117 /* Reuse those two pages for AMD SVM. (one is active; never both) */
118 pVM->hwaccm.s.svm.pHState = pVM->hwaccm.s.vmx.pVMXON;
119 pVM->hwaccm.s.svm.pHStatePhys = pVM->hwaccm.s.vmx.pVMXONPhys;
120 pVM->hwaccm.s.svm.pVMCB = pVM->hwaccm.s.vmx.pVMCS;
121 pVM->hwaccm.s.svm.pVMCBPhys = pVM->hwaccm.s.vmx.pVMCSPhys;
122
123 /* Allocate one page for the SVM host control structure (used for vmsave/vmload). */
124 pVM->hwaccm.s.svm.pVMCBHost = SUPContAlloc(PAGE_SIZE, &pVM->hwaccm.s.svm.pVMCBHostPhys);
125 if (pVM->hwaccm.s.svm.pVMCBHost == 0)
126 {
127 AssertMsgFailed(("SUPContAlloc failed!!\n"));
128 return VERR_NO_MEMORY;
129 }
130 memset(pVM->hwaccm.s.svm.pVMCBHost, 0, PAGE_SIZE);
131
132 /* Allocate 12 KB for the IO bitmap (doesn't seem to be a way to convince SVM not to use it) */
133 pVM->hwaccm.s.svm.pIOBitmap = SUPContAlloc(PAGE_SIZE*3, &pVM->hwaccm.s.svm.pIOBitmapPhys);
134 if (pVM->hwaccm.s.svm.pIOBitmap == 0)
135 {
136 AssertMsgFailed(("SUPContAlloc failed!!\n"));
137 return VERR_NO_MEMORY;
138 }
139 /* Set all bits to intercept all IO accesses. */
140 memset(pVM->hwaccm.s.svm.pIOBitmap, 0xff, PAGE_SIZE*3);
141
142 /* Allocate 8 KB for the MSR bitmap (doesn't seem to be a way to convince SVM not to use it) */
143 pVM->hwaccm.s.svm.pMSRBitmap = SUPContAlloc(PAGE_SIZE*2, &pVM->hwaccm.s.svm.pMSRBitmapPhys);
144 if (pVM->hwaccm.s.svm.pMSRBitmap == 0)
145 {
146 AssertMsgFailed(("SUPContAlloc failed!!\n"));
147 return VERR_NO_MEMORY;
148 }
149 /* Set all bits to intercept all MSR accesses. */
150 memset(pVM->hwaccm.s.svm.pMSRBitmap, 0xff, PAGE_SIZE*2);
151
152 /* Misc initialisation. */
153 pVM->hwaccm.s.vmx.fSupported = false;
154 pVM->hwaccm.s.svm.fSupported = false;
155 pVM->hwaccm.s.vmx.fEnabled = false;
156 pVM->hwaccm.s.svm.fEnabled = false;
157
158 pVM->hwaccm.s.fActive = false;
159
160 /* On first entry we'll sync everything. */
161 pVM->hwaccm.s.fContextUseFlags = HWACCM_CHANGED_ALL;
162
163 pVM->hwaccm.s.vmx.cr0_mask = 0;
164 pVM->hwaccm.s.vmx.cr4_mask = 0;
165
166 /*
167 * Statistics.
168 */
169 STAM_REG(pVM, &pVM->hwaccm.s.StatEntry, STAMTYPE_PROFILE, "/PROF/HWACCM/SwitchToGC", STAMUNIT_TICKS_PER_CALL, "Profiling of VMXR0RunGuestCode entry");
170 STAM_REG(pVM, &pVM->hwaccm.s.StatExit, STAMTYPE_PROFILE, "/PROF/HWACCM/SwitchFromGC", STAMUNIT_TICKS_PER_CALL, "Profiling of VMXR0RunGuestCode exit");
171 STAM_REG(pVM, &pVM->hwaccm.s.StatInGC, STAMTYPE_PROFILE, "/PROF/HWACCM/InGC", STAMUNIT_TICKS_PER_CALL, "Profiling of vmlaunch");
172
173 STAM_REG(pVM, &pVM->hwaccm.s.StatExitShadowNM, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Shadow/#NM", STAMUNIT_OCCURENCES, "Nr of occurances");
174 STAM_REG(pVM, &pVM->hwaccm.s.StatExitGuestNM, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Guest/#NM", STAMUNIT_OCCURENCES, "Nr of occurances");
175 STAM_REG(pVM, &pVM->hwaccm.s.StatExitShadowPF, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Shadow/#PF", STAMUNIT_OCCURENCES, "Nr of occurances");
176 STAM_REG(pVM, &pVM->hwaccm.s.StatExitGuestPF, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Guest/#PF", STAMUNIT_OCCURENCES, "Nr of occurances");
177 STAM_REG(pVM, &pVM->hwaccm.s.StatExitGuestUD, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Guest/#UD", STAMUNIT_OCCURENCES, "Nr of occurances");
178 STAM_REG(pVM, &pVM->hwaccm.s.StatExitGuestSS, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Guest/#SS", STAMUNIT_OCCURENCES, "Nr of occurances");
179 STAM_REG(pVM, &pVM->hwaccm.s.StatExitGuestNP, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Guest/#NP", STAMUNIT_OCCURENCES, "Nr of occurances");
180 STAM_REG(pVM, &pVM->hwaccm.s.StatExitGuestGP, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Guest/#GP", STAMUNIT_OCCURENCES, "Nr of occurances");
181 STAM_REG(pVM, &pVM->hwaccm.s.StatExitGuestMF, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Guest/#MF", STAMUNIT_OCCURENCES, "Nr of occurances");
182 STAM_REG(pVM, &pVM->hwaccm.s.StatExitGuestDE, STAMTYPE_COUNTER, "/HWACCM/Exit/Trap/Guest/#DE", STAMUNIT_OCCURENCES, "Nr of occurances");
183 STAM_REG(pVM, &pVM->hwaccm.s.StatExitInvpg, STAMTYPE_COUNTER, "/HWACCM/Exit/Instr/Invlpg", STAMUNIT_OCCURENCES, "Nr of occurances");
184 STAM_REG(pVM, &pVM->hwaccm.s.StatExitInvd, STAMTYPE_COUNTER, "/HWACCM/Exit/Instr/Invd", STAMUNIT_OCCURENCES, "Nr of occurances");
185 STAM_REG(pVM, &pVM->hwaccm.s.StatExitCpuid, STAMTYPE_COUNTER, "/HWACCM/Exit/Instr/Cpuid", STAMUNIT_OCCURENCES, "Nr of occurances");
186 STAM_REG(pVM, &pVM->hwaccm.s.StatExitCRxWrite, STAMTYPE_COUNTER, "/HWACCM/Exit/Instr/CRx/Write", STAMUNIT_OCCURENCES, "Nr of occurances");
187 STAM_REG(pVM, &pVM->hwaccm.s.StatExitCRxRead, STAMTYPE_COUNTER, "/HWACCM/Exit/Instr/CRx/Read", STAMUNIT_OCCURENCES, "Nr of occurances");
188 STAM_REG(pVM, &pVM->hwaccm.s.StatExitDRxWrite, STAMTYPE_COUNTER, "/HWACCM/Exit/Instr/DRx/Write", STAMUNIT_OCCURENCES, "Nr of occurances");
189 STAM_REG(pVM, &pVM->hwaccm.s.StatExitDRxRead, STAMTYPE_COUNTER, "/HWACCM/Exit/Instr/DRx/Read", STAMUNIT_OCCURENCES, "Nr of occurances");
190 STAM_REG(pVM, &pVM->hwaccm.s.StatExitCLTS, STAMTYPE_COUNTER, "/HWACCM/Exit/Instr/CLTS", STAMUNIT_OCCURENCES, "Nr of occurances");
191 STAM_REG(pVM, &pVM->hwaccm.s.StatExitLMSW, STAMTYPE_COUNTER, "/HWACCM/Exit/Instr/LMSW", STAMUNIT_OCCURENCES, "Nr of occurances");
192 STAM_REG(pVM, &pVM->hwaccm.s.StatExitIOWrite, STAMTYPE_COUNTER, "/HWACCM/Exit/IO/Write", STAMUNIT_OCCURENCES, "Nr of occurances");
193 STAM_REG(pVM, &pVM->hwaccm.s.StatExitIORead, STAMTYPE_COUNTER, "/HWACCM/Exit/IO/Read", STAMUNIT_OCCURENCES, "Nr of occurances");
194 STAM_REG(pVM, &pVM->hwaccm.s.StatExitIrqWindow, STAMTYPE_COUNTER, "/HWACCM/Exit/GuestIrq/Pending", STAMUNIT_OCCURENCES, "Nr of occurances");
195
196 STAM_REG(pVM, &pVM->hwaccm.s.StatSwitchGuestIrq,STAMTYPE_COUNTER, "/HWACCM/Switch/IrqPending", STAMUNIT_OCCURENCES, "Nr of occurances");
197 STAM_REG(pVM, &pVM->hwaccm.s.StatSwitchToR3, STAMTYPE_COUNTER, "/HWACCM/Switch/ToR3", STAMUNIT_OCCURENCES, "Nr of occurances");
198
199 STAM_REG(pVM, &pVM->hwaccm.s.StatIntInject, STAMTYPE_COUNTER, "/HWACCM/Irq/Inject", STAMUNIT_OCCURENCES, "Nr of occurances");
200 STAM_REG(pVM, &pVM->hwaccm.s.StatIntReinject, STAMTYPE_COUNTER, "/HWACCM/Irq/Reinject", STAMUNIT_OCCURENCES, "Nr of occurances");
201 STAM_REG(pVM, &pVM->hwaccm.s.StatPendingHostIrq,STAMTYPE_COUNTER, "/HWACCM/Irq/PendingOnHost", STAMUNIT_OCCURENCES, "Nr of occurances");
202
203 pVM->hwaccm.s.pStatExitReason = 0;
204
205#ifdef VBOX_WITH_STATISTICS
206 rc = MMHyperAlloc(pVM, MAX_EXITREASON_STAT*sizeof(*pVM->hwaccm.s.pStatExitReason), 0, MM_TAG_HWACCM, (void **)&pVM->hwaccm.s.pStatExitReason);
207 AssertRC(rc);
208 if (VBOX_SUCCESS(rc))
209 {
210 for (int i=0;i<MAX_EXITREASON_STAT;i++)
211 {
212 char szName[64];
213 RTStrPrintf(szName, sizeof(szName), "/HWACCM/Exit/Reason/%02x", i);
214 int rc = STAMR3Register(pVM, &pVM->hwaccm.s.pStatExitReason[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "Exit reason");
215 AssertRC(rc);
216 }
217 }
218#endif
219
220 /* Disabled by default. */
221 pVM->fHWACCMEnabled = false;
222
223 /* HWACCM support must be explicitely enabled in the configuration file. */
224 pVM->hwaccm.s.fAllowed = false;
225 CFGMR3QueryBool(CFGMR3GetChild(CFGMR3GetRoot(pVM), "HWVirtExt/"), "Enabled", &pVM->hwaccm.s.fAllowed);
226
227 return VINF_SUCCESS;
228}
229
230
231/**
232 * Turns off normal raw mode features
233 *
234 * @param pVM The VM to operate on.
235 */
236static void hwaccmr3DisableRawMode(PVM pVM)
237{
238 /* Disable PATM & CSAM. */
239 PATMR3AllowPatching(pVM, false);
240 CSAMDisableScanning(pVM);
241
242 /* Turn off IDT/LDT/GDT and TSS monitoring and sycing. */
243 SELMR3DisableMonitoring(pVM);
244 TRPMR3DisableMonitoring(pVM);
245
246 /* The hidden selector registers are now valid. */
247 CPUMSetHiddenSelRegsValid(pVM, true);
248
249 /* Disable the switcher code (safety precaution). */
250 VMMR3DisableSwitcher(pVM);
251
252 /* Disable mapping of the hypervisor into the shadow page table. */
253 PGMR3RemoveMappingsFromShwPD(pVM);
254}
255
256/**
257 * Applies relocations to data and code managed by this
258 * component. This function will be called at init and
259 * whenever the VMM need to relocate it self inside the GC.
260 *
261 * @param pVM The VM.
262 */
263HWACCMR3DECL(void) HWACCMR3Relocate(PVM pVM)
264{
265#ifdef LOG_ENABLED
266 Log(("HWACCMR3Relocate to %VGv\n", MMHyperGetArea(pVM, 0)));
267#endif
268
269 if (pVM->hwaccm.s.fAllowed == false)
270 return ;
271
272 if (pVM->hwaccm.s.vmx.fSupported)
273 {
274 Log(("pVM->hwaccm.s.vmx.fSupported = %d\n", pVM->hwaccm.s.vmx.fSupported));
275 LogRel(("HWACCM: Host CR4=%08X\n", pVM->hwaccm.s.vmx.hostCR4));
276 LogRel(("HWACCM: MSR_IA32_FEATURE_CONTROL = %VX64\n", pVM->hwaccm.s.vmx.msr.feature_ctrl));
277 LogRel(("HWACCM: MSR_IA32_VMX_BASIC_INFO = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_basic_info));
278 LogRel(("HWACCM: MSR_IA32_VMX_PINBASED_CTLS = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_pin_ctls));
279 LogRel(("HWACCM: MSR_IA32_VMX_PROCBASED_CTLS = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_proc_ctls));
280 LogRel(("HWACCM: MSR_IA32_VMX_EXIT_CTLS = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_exit));
281 LogRel(("HWACCM: MSR_IA32_VMX_ENTRY_CTLS = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_entry));
282 LogRel(("HWACCM: MSR_IA32_VMX_MISC = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_misc));
283 LogRel(("HWACCM: MSR_IA32_VMX_CR0_FIXED0 = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_cr0_fixed0));
284 LogRel(("HWACCM: MSR_IA32_VMX_CR0_FIXED1 = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_cr0_fixed1));
285 LogRel(("HWACCM: MSR_IA32_VMX_CR4_FIXED0 = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_cr4_fixed0));
286 LogRel(("HWACCM: MSR_IA32_VMX_CR4_FIXED1 = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_cr4_fixed1));
287 LogRel(("HWACCM: MSR_IA32_VMX_VMCS_ENUM = %VX64\n", pVM->hwaccm.s.vmx.msr.vmx_vmcs_enum));
288
289 if (pVM->hwaccm.s.fInitialized == false && pVM->hwaccm.s.vmx.msr.feature_ctrl != 0)
290 {
291 /* Only try once. */
292 pVM->hwaccm.s.fInitialized = true;
293
294 int rc = SUPCallVMMR0(pVM, VMMR0_HWACC_SETUP_VM, NULL);
295 AssertRC(rc);
296 if (rc == VINF_SUCCESS)
297 {
298 hwaccmr3DisableRawMode(pVM);
299
300 pVM->fHWACCMEnabled = true;
301 pVM->hwaccm.s.vmx.fEnabled = true;
302 LogRel(("HWACCM: VMX enabled!\n"));
303 }
304 else
305 {
306 LogRel(("HWACCM: VMX setup failed with rc=%Vrc!\n", rc));
307 pVM->fHWACCMEnabled = false;
308 }
309 }
310 }
311 else
312 if (pVM->hwaccm.s.svm.fSupported)
313 {
314 Log(("pVM->hwaccm.s.svm.fSupported = %d\n", pVM->hwaccm.s.svm.fSupported));
315 LogRel(("HWACMM: cpuid 0x80000001.u32AMDFeatureECX = %VX32\n", pVM->hwaccm.s.cpuid.u32AMDFeatureECX));
316 LogRel(("HWACMM: cpuid 0x80000001.u32AMDFeatureEDX = %VX32\n", pVM->hwaccm.s.cpuid.u32AMDFeatureEDX));
317 LogRel(("HWACCM: SVM revision = %X\n", pVM->hwaccm.s.svm.u32Rev));
318 LogRel(("HWACCM: SVM max ASID = %d\n", pVM->hwaccm.s.svm.u32MaxASID));
319
320 if (pVM->hwaccm.s.fInitialized == false)
321 {
322 /* Only try once. */
323 pVM->hwaccm.s.fInitialized = true;
324
325 int rc = SUPCallVMMR0(pVM, VMMR0_HWACC_SETUP_VM, NULL);
326 AssertRC(rc);
327 if (rc == VINF_SUCCESS)
328 {
329#if 1
330 LogRel(("HWACCM: SVM supported; disabled currently\n"));
331#else
332 hwaccmr3DisableRawMode(pVM);
333
334 pVM->fHWACCMEnabled = true;
335 pVM->hwaccm.s.svm.fEnabled = true;
336#endif
337 }
338 else
339 {
340 pVM->fHWACCMEnabled = false;
341 }
342 }
343 }
344
345}
346
347
348/**
349 * Checks hardware accelerated raw mode is allowed.
350 *
351 * @returns boolean
352 * @param pVM The VM to operate on.
353 */
354HWACCMR3DECL(bool) HWACCMR3IsAllowed(PVM pVM)
355{
356 return pVM->hwaccm.s.fAllowed;
357}
358
359
360/**
361 * Notification callback which is called whenever there is a chance that a CR3
362 * value might have changed.
363 * This is called by PGM.
364 *
365 * @param pVM The VM to operate on.
366 * @param enmShadowMode New paging mode.
367 */
368HWACCMR3DECL(void) HWACCMR3PagingModeChanged(PVM pVM, PGMMODE enmShadowMode)
369{
370 pVM->hwaccm.s.enmShadowMode = enmShadowMode;
371}
372
373/**
374 * Terminates the HWACCM.
375 *
376 * Termination means cleaning up and freeing all resources,
377 * the VM it self is at this point powered off or suspended.
378 *
379 * @returns VBox status code.
380 * @param pVM The VM to operate on.
381 */
382HWACCMR3DECL(int) HWACCMR3Term(PVM pVM)
383{
384 if (pVM->hwaccm.s.pStatExitReason)
385 {
386 MMHyperFree(pVM, pVM->hwaccm.s.pStatExitReason);
387 pVM->hwaccm.s.pStatExitReason = 0;
388 }
389
390 if (pVM->hwaccm.s.vmx.pVMXON)
391 {
392 SUPContFree(pVM->hwaccm.s.vmx.pVMXON);
393 pVM->hwaccm.s.vmx.pVMXON = 0;
394 }
395 if (pVM->hwaccm.s.vmx.pVMCS)
396 {
397 SUPContFree(pVM->hwaccm.s.vmx.pVMCS);
398 pVM->hwaccm.s.vmx.pVMCS = 0;
399 }
400 if (pVM->hwaccm.s.svm.pVMCBHost)
401 {
402 SUPContFree(pVM->hwaccm.s.svm.pVMCBHost);
403 pVM->hwaccm.s.svm.pVMCBHost = 0;
404 }
405 if (pVM->hwaccm.s.svm.pIOBitmap)
406 {
407 SUPContFree(pVM->hwaccm.s.svm.pIOBitmap);
408 pVM->hwaccm.s.svm.pIOBitmap = 0;
409 }
410 if (pVM->hwaccm.s.svm.pMSRBitmap)
411 {
412 SUPContFree(pVM->hwaccm.s.svm.pMSRBitmap);
413 pVM->hwaccm.s.svm.pMSRBitmap = 0;
414 }
415 return 0;
416}
417
418
419/**
420 * The VM is being reset.
421 *
422 * For the HWACCM component this means that any GDT/LDT/TSS monitors
423 * needs to be removed.
424 *
425 * @param pVM VM handle.
426 */
427HWACCMR3DECL(void) HWACCMR3Reset(PVM pVM)
428{
429 LogFlow(("HWACCMR3Reset:\n"));
430
431 if (pVM->fHWACCMEnabled)
432 hwaccmr3DisableRawMode(pVM);
433
434 /* On first entry we'll sync everything. */
435 pVM->hwaccm.s.fContextUseFlags = HWACCM_CHANGED_ALL;
436
437 pVM->hwaccm.s.vmx.cr0_mask = 0;
438 pVM->hwaccm.s.vmx.cr4_mask = 0;
439}
440
441/**
442 * Checks if we can currently use hardware accelerated raw mode.
443 *
444 * @returns boolean
445 * @param pVM The VM to operate on.
446 * @param pCtx Partial VM execution context
447 */
448HWACCMR3DECL(bool) HWACCMR3CanExecuteGuest(PVM pVM, PCPUMCTX pCtx)
449{
450 uint32_t mask;
451
452 Assert(pVM->fHWACCMEnabled);
453
454 /* @todo we can support real-mode by using v86 and protected mode without paging with identity mapped pages.
455 * (but do we really care?)
456 */
457
458 pVM->hwaccm.s.fActive = false;
459
460 /** @note The context supplied by REM is partial. If we add more checks here, be sure to verify that REM provides this info! */
461
462 /* Too early for VMX and SVN (?). */
463 if (pCtx->idtr.pIdt == 0 || pCtx->idtr.cbIdt == 0 || pCtx->tr == 0)
464 return false;
465
466 /* The guest is about to complete the switch to protected mode. Wait a bit longer. */
467 if (pCtx->csHid.Attr.n.u1Present == 0)
468 return false;
469 if (pCtx->ssHid.Attr.n.u1Present == 0)
470 return false;
471
472 /** @todo if we remove this check, then Windows XP install fails during the textmode phase */
473 if (!(pCtx->cr0 & X86_CR0_WRITE_PROTECT))
474 return false;
475
476 if (pVM->hwaccm.s.vmx.fEnabled)
477 {
478 /* if bit N is set in cr0_fixed0, then it must be set in the guest's cr0. */
479 mask = (uint32_t)pVM->hwaccm.s.vmx.msr.vmx_cr0_fixed0;
480 /** @note We ignore the NE bit here on purpose; see vmmr0\hwaccmr0.cpp for details. */
481 mask &= ~X86_CR0_NE;
482
483 if ((pCtx->cr0 & mask) != mask)
484 return false;
485
486 /* if bit N is cleared in cr0_fixed1, then it must be zero in the guest's cr0. */
487 mask = (uint32_t)~pVM->hwaccm.s.vmx.msr.vmx_cr0_fixed1;
488 if ((pCtx->cr0 & mask) != 0)
489 return false;
490
491 /* if bit N is set in cr4_fixed0, then it must be set in the guest's cr4. */
492 mask = (uint32_t)pVM->hwaccm.s.vmx.msr.vmx_cr4_fixed0;
493 mask &= ~X86_CR4_VMXE;
494 if ((pCtx->cr4 & mask) != mask)
495 return false;
496
497 /* if bit N is cleared in cr4_fixed1, then it must be zero in the guest's cr4. */
498 mask = (uint32_t)~pVM->hwaccm.s.vmx.msr.vmx_cr4_fixed1;
499 if ((pCtx->cr4 & mask) != 0)
500 return false;
501
502 pVM->hwaccm.s.fActive = true;
503 return true;
504 }
505 else
506 {
507 Assert(pVM->hwaccm.s.svm.fEnabled);
508
509 /* Let's start with protected mode with paging enabled first. */
510 if ((pCtx->cr0 & (X86_CR0_PE|X86_CR0_PG)) == (X86_CR0_PE|X86_CR0_PG))
511 {
512 pVM->hwaccm.s.fActive = true;
513 return true;
514 }
515 }
516
517 return false;
518}
519
520/**
521 * Checks if we are currently using hardware accelerated raw mode.
522 *
523 * @returns boolean
524 * @param pVM The VM to operate on.
525 */
526HWACCMR3DECL(bool) HWACCMR3IsActive(PVM pVM)
527{
528 return pVM->hwaccm.s.fActive;
529}
530
531/**
532 * Checks if internal events are pending. In that case we are not allowed to dispatch interrupts.
533 *
534 * @returns boolean
535 * @param pVM The VM to operate on.
536 */
537HWACCMR3DECL(bool) HWACCMR3IsEventPending(PVM pVM)
538{
539 return HWACCMIsEnabled(pVM) && pVM->hwaccm.s.Event.fPending;
540}
541
542/**
543 * Execute state save operation.
544 *
545 * @returns VBox status code.
546 * @param pVM VM Handle.
547 * @param pSSM SSM operation handle.
548 */
549static DECLCALLBACK(int) hwaccmR3Save(PVM pVM, PSSMHANDLE pSSM)
550{
551 int rc;
552
553 Log(("hwaccmR3Save:\n"));
554
555 /*
556 * Save the basic bits - fortunately all the other things can be resynced on load.
557 */
558 rc = SSMR3PutU32(pSSM, pVM->hwaccm.s.Event.fPending);
559 AssertRCReturn(rc, rc);
560 rc = SSMR3PutU32(pSSM, pVM->hwaccm.s.Event.errCode);
561 AssertRCReturn(rc, rc);
562 rc = SSMR3PutU64(pSSM, pVM->hwaccm.s.Event.intInfo);
563 AssertRCReturn(rc, rc);
564
565 return VINF_SUCCESS;
566}
567
568
569/**
570 * Execute state load operation.
571 *
572 * @returns VBox status code.
573 * @param pVM VM Handle.
574 * @param pSSM SSM operation handle.
575 * @param u32Version Data layout version.
576 */
577static DECLCALLBACK(int) hwaccmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version)
578{
579 int rc;
580
581 Log(("hwaccmR3Load:\n"));
582
583 /*
584 * Validate version.
585 */
586 if (u32Version != HWACCM_SSM_VERSION)
587 {
588 Log(("hwaccmR3Load: Invalid version u32Version=%d!\n", u32Version));
589 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
590 }
591
592 rc = SSMR3GetU32(pSSM, &pVM->hwaccm.s.Event.fPending);
593 AssertRCReturn(rc, rc);
594 rc = SSMR3GetU32(pSSM, &pVM->hwaccm.s.Event.errCode);
595 AssertRCReturn(rc, rc);
596 rc = SSMR3GetU64(pSSM, &pVM->hwaccm.s.Event.intInfo);
597 AssertRCReturn(rc, rc);
598
599 return VINF_SUCCESS;
600}
601
602
603
604
Note: See TracBrowser for help on using the repository browser.

© 2024 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette