VirtualBox

source: vbox/trunk/src/VBox/VMM/PGMBth.h@ 18499

Last change on this file since 18499 was 18289, checked in by vboxsync, 15 years ago

PGMBth.h: nc
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1/* $Id: PGMBth.h 18289 2009-03-26 05:07:04Z vboxsync $ */
2/** @file
3 * VBox - Page Manager / Monitor, Shadow+Guest Paging Template.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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 (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18 * Clara, CA 95054 USA or visit http://www.sun.com if you need
19 * additional information or have any questions.
20 */
21
22
23/*******************************************************************************
24* Internal Functions *
25*******************************************************************************/
26__BEGIN_DECLS
27PGM_BTH_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0);
28PGM_BTH_DECL(int, Enter)(PVM pVM, RTGCPHYS GCPhysCR3);
29PGM_BTH_DECL(int, Relocate)(PVM pVM, RTGCPTR offDelta);
30
31PGM_BTH_DECL(int, Trap0eHandler)(PVM pVM, RTGCUINT uErr, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault);
32PGM_BTH_DECL(int, SyncCR3)(PVM pVM, uint64_t cr0, uint64_t cr3, uint64_t cr4, bool fGlobal);
33PGM_BTH_DECL(int, SyncPage)(PVM pVM, X86PDE PdeSrc, RTGCPTR GCPtrPage, unsigned cPages, unsigned uError);
34PGM_BTH_DECL(int, VerifyAccessSyncPage)(PVM pVM, RTGCPTR Addr, unsigned fPage, unsigned uError);
35PGM_BTH_DECL(int, InvalidatePage)(PVM pVM, RTGCPTR GCPtrPage);
36PGM_BTH_DECL(int, PrefetchPage)(PVM pVM, RTGCPTR GCPtrPage);
37PGM_BTH_DECL(unsigned, AssertCR3)(PVM pVM, uint64_t cr3, uint64_t cr4, RTGCPTR GCPtr = 0, RTGCPTR cb = ~(RTGCPTR)0);
38PGM_BTH_DECL(int, MapCR3)(PVM pVM, RTGCPHYS GCPhysCR3);
39PGM_BTH_DECL(int, UnmapCR3)(PVM pVM);
40__END_DECLS
41
42
43/**
44 * Initializes the both bit of the paging mode data.
45 *
46 * @returns VBox status code.
47 * @param pVM The VM handle.
48 * @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
49 * This is used early in the init process to avoid trouble with PDM
50 * not being initialized yet.
51 */
52PGM_BTH_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0)
53{
54 Assert(pModeData->uShwType == PGM_SHW_TYPE); Assert(pModeData->uGstType == PGM_GST_TYPE);
55
56 /* Ring 3 */
57 pModeData->pfnR3BthRelocate = PGM_BTH_NAME(Relocate);
58 pModeData->pfnR3BthSyncCR3 = PGM_BTH_NAME(SyncCR3);
59 pModeData->pfnR3BthInvalidatePage = PGM_BTH_NAME(InvalidatePage);
60 pModeData->pfnR3BthSyncPage = PGM_BTH_NAME(SyncPage);
61 pModeData->pfnR3BthPrefetchPage = PGM_BTH_NAME(PrefetchPage);
62 pModeData->pfnR3BthVerifyAccessSyncPage = PGM_BTH_NAME(VerifyAccessSyncPage);
63#ifdef VBOX_STRICT
64 pModeData->pfnR3BthAssertCR3 = PGM_BTH_NAME(AssertCR3);
65#endif
66 pModeData->pfnR3BthMapCR3 = PGM_BTH_NAME(MapCR3);
67 pModeData->pfnR3BthUnmapCR3 = PGM_BTH_NAME(UnmapCR3);
68
69 if (fResolveGCAndR0)
70 {
71 int rc;
72
73#if PGM_SHW_TYPE != PGM_TYPE_AMD64 && PGM_SHW_TYPE != PGM_TYPE_NESTED && PGM_SHW_TYPE != PGM_TYPE_EPT /* No AMD64 for traditional virtualization, only VT-x and AMD-V. */
74 /* GC */
75 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(Trap0eHandler), &pModeData->pfnRCBthTrap0eHandler);
76 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_RC_STR(Trap0eHandler), rc), rc);
77 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(InvalidatePage), &pModeData->pfnRCBthInvalidatePage);
78 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_RC_STR(InvalidatePage), rc), rc);
79 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(SyncCR3), &pModeData->pfnRCBthSyncCR3);
80 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_RC_STR(SyncPage), rc), rc);
81 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(SyncPage), &pModeData->pfnRCBthSyncPage);
82 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_RC_STR(SyncPage), rc), rc);
83 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(PrefetchPage), &pModeData->pfnRCBthPrefetchPage);
84 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_RC_STR(PrefetchPage), rc), rc);
85 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(VerifyAccessSyncPage),&pModeData->pfnRCBthVerifyAccessSyncPage);
86 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_RC_STR(VerifyAccessSyncPage), rc), rc);
87# ifdef VBOX_STRICT
88 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(AssertCR3), &pModeData->pfnRCBthAssertCR3);
89 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_RC_STR(AssertCR3), rc), rc);
90# endif
91 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(MapCR3), &pModeData->pfnRCBthMapCR3);
92 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_RC_STR(MapCR3), rc), rc);
93 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(UnmapCR3), &pModeData->pfnRCBthUnmapCR3);
94 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_RC_STR(UnmapCR3), rc), rc);
95#endif /* Not AMD64 shadow paging. */
96
97 /* Ring 0 */
98 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(Trap0eHandler), &pModeData->pfnR0BthTrap0eHandler);
99 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_R0_STR(Trap0eHandler), rc), rc);
100 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(InvalidatePage), &pModeData->pfnR0BthInvalidatePage);
101 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_R0_STR(InvalidatePage), rc), rc);
102 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(SyncCR3), &pModeData->pfnR0BthSyncCR3);
103 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_R0_STR(SyncCR3), rc), rc);
104 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(SyncPage), &pModeData->pfnR0BthSyncPage);
105 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_R0_STR(SyncPage), rc), rc);
106 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(PrefetchPage), &pModeData->pfnR0BthPrefetchPage);
107 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_R0_STR(PrefetchPage), rc), rc);
108 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(VerifyAccessSyncPage),&pModeData->pfnR0BthVerifyAccessSyncPage);
109 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_R0_STR(VerifyAccessSyncPage), rc), rc);
110#ifdef VBOX_STRICT
111 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(AssertCR3), &pModeData->pfnR0BthAssertCR3);
112 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_R0_STR(AssertCR3), rc), rc);
113#endif
114 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(MapCR3), &pModeData->pfnR0BthMapCR3);
115 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_R0_STR(MapCR3), rc), rc);
116 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(UnmapCR3), &pModeData->pfnR0BthUnmapCR3);
117 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_BTH_NAME_R0_STR(UnmapCR3), rc), rc);
118 }
119 return VINF_SUCCESS;
120}
121
122
123/**
124 * Enters the shadow+guest mode.
125 *
126 * @returns VBox status code.
127 * @param pVM VM handle.
128 * @param GCPhysCR3 The physical address from the CR3 register.
129 */
130PGM_BTH_DECL(int, Enter)(PVM pVM, RTGCPHYS GCPhysCR3)
131{
132 /* Here we deal with allocation of the root shadow page table for real and protected mode during mode switches;
133 * Other modes rely on MapCR3/UnmapCR3 to setup the shadow root page tables.
134 */
135#if ( ( PGM_SHW_TYPE == PGM_TYPE_32BIT \
136 || PGM_SHW_TYPE == PGM_TYPE_PAE \
137 || PGM_SHW_TYPE == PGM_TYPE_AMD64) \
138 && ( PGM_GST_TYPE == PGM_TYPE_REAL \
139 || PGM_GST_TYPE == PGM_TYPE_PROT))
140
141 Assert(!HWACCMIsNestedPagingActive(pVM));
142 /* Note: we only really need shadow paging in real and protected mode for VT-x and AMD-V (excluding nested paging/EPT modes),
143 * but any calls to GC need a proper shadow page setup as well.
144 */
145 /* Free the previous root mapping if still active. */
146 PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
147 if (pVM->pgm.s.CTX_SUFF(pShwPageCR3))
148 {
149 Assert(pVM->pgm.s.pShwPageCR3R3->enmKind != PGMPOOLKIND_FREE);
150
151 /* Mark the page as unlocked; allow flushing again. */
152 pgmPoolUnlockPage(pPool, pVM->pgm.s.CTX_SUFF(pShwPageCR3));
153
154 /* Remove the hypervisor mappings from the shadow page table. */
155 pgmMapDeactivateCR3(pVM, pVM->pgm.s.CTX_SUFF(pShwPageCR3));
156
157 pgmPoolFreeByPage(pPool, pVM->pgm.s.pShwPageCR3R3, pVM->pgm.s.iShwUser, pVM->pgm.s.iShwUserTable);
158 pVM->pgm.s.pShwPageCR3R3 = 0;
159 pVM->pgm.s.pShwPageCR3RC = 0;
160 pVM->pgm.s.pShwPageCR3R0 = 0;
161 pVM->pgm.s.iShwUser = 0;
162 pVM->pgm.s.iShwUserTable = 0;
163 }
164
165 /* contruct a fake address */
166 GCPhysCR3 = RT_BIT_64(63);
167 pVM->pgm.s.iShwUser = SHW_POOL_ROOT_IDX;
168 pVM->pgm.s.iShwUserTable = GCPhysCR3 >> PAGE_SHIFT;
169 int rc = pgmPoolAlloc(pVM, GCPhysCR3, BTH_PGMPOOLKIND_ROOT, pVM->pgm.s.iShwUser, pVM->pgm.s.iShwUserTable, &pVM->pgm.s.pShwPageCR3R3);
170 if (rc == VERR_PGM_POOL_FLUSHED)
171 {
172 Log(("Bth-Enter: PGM pool flushed -> signal sync cr3\n"));
173 Assert(VM_FF_ISSET(pVM, VM_FF_PGM_SYNC_CR3));
174 return VINF_PGM_SYNC_CR3;
175 }
176 AssertRCReturn(rc, rc);
177
178 /* Mark the page as locked; disallow flushing. */
179 pgmPoolLockPage(pPool, pVM->pgm.s.pShwPageCR3R3);
180
181 pVM->pgm.s.pShwPageCR3R0 = MMHyperCCToR0(pVM, pVM->pgm.s.pShwPageCR3R3);
182 pVM->pgm.s.pShwPageCR3RC = MMHyperCCToRC(pVM, pVM->pgm.s.pShwPageCR3R3);
183
184 /* Set the current hypervisor CR3. */
185 CPUMSetHyperCR3(pVM, PGMGetHyperCR3(pVM));
186
187 /* Apply all hypervisor mappings to the new CR3. */
188 return pgmMapActivateCR3(pVM, pVM->pgm.s.CTX_SUFF(pShwPageCR3));
189#else
190 return VINF_SUCCESS;
191#endif
192}
193
194
195/**
196 * Relocate any GC pointers related to shadow mode paging.
197 *
198 * @returns VBox status code.
199 * @param pVM The VM handle.
200 * @param offDelta The reloation offset.
201 */
202PGM_BTH_DECL(int, Relocate)(PVM pVM, RTGCPTR offDelta)
203{
204 /* nothing special to do here - InitData does the job. */
205 return VINF_SUCCESS;
206}
207
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