| 1 | /* $Id: PGMShw.h 16859 2009-02-17 16:19:51Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBox - Page Manager / Monitor, Shadow Paging Template.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 18 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 19 | * additional information or have any questions.
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| 20 | */
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| 21 |
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| 22 | /*******************************************************************************
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| 23 | * Defined Constants And Macros *
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| 24 | *******************************************************************************/
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| 25 | #undef SHWPT
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| 26 | #undef PSHWPT
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| 27 | #undef SHWPTE
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| 28 | #undef PSHWPTE
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| 29 | #undef SHWPD
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| 30 | #undef PSHWPD
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| 31 | #undef SHWPDE
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| 32 | #undef PSHWPDE
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| 33 | #undef SHW_PDE_PG_MASK
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| 34 | #undef SHW_PD_SHIFT
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| 35 | #undef SHW_PD_MASK
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| 36 | #undef SHW_PTE_PG_MASK
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| 37 | #undef SHW_PT_SHIFT
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| 38 | #undef SHW_PT_MASK
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| 39 | #undef SHW_TOTAL_PD_ENTRIES
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| 40 | #undef SHW_PDPT_SHIFT
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| 41 | #undef SHW_PDPT_MASK
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| 42 | #undef SHW_PDPE_PG_MASK
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| 43 | #undef SHW_POOL_ROOT_IDX
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| 44 |
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| 45 | #if PGM_SHW_TYPE == PGM_TYPE_32BIT
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| 46 | # define SHWPT X86PT
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| 47 | # define PSHWPT PX86PT
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| 48 | # define SHWPTE X86PTE
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| 49 | # define PSHWPTE PX86PTE
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| 50 | # define SHWPD X86PD
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| 51 | # define PSHWPD PX86PD
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| 52 | # define SHWPDE X86PDE
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| 53 | # define PSHWPDE PX86PDE
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| 54 | # define SHW_PDE_PG_MASK X86_PDE_PG_MASK
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| 55 | # define SHW_PD_SHIFT X86_PD_SHIFT
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| 56 | # define SHW_PD_MASK X86_PD_MASK
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| 57 | # define SHW_TOTAL_PD_ENTRIES X86_PG_ENTRIES
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| 58 | # define SHW_PTE_PG_MASK X86_PTE_PG_MASK
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| 59 | # define SHW_PT_SHIFT X86_PT_SHIFT
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| 60 | # define SHW_PT_MASK X86_PT_MASK
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| 61 | # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_PD
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| 62 |
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| 63 | #elif PGM_SHW_TYPE == PGM_TYPE_EPT
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| 64 | # define SHWPT EPTPT
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| 65 | # define PSHWPT PEPTPT
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| 66 | # define SHWPTE EPTPTE
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| 67 | # define PSHWPTE PEPTPTE
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| 68 | # define SHWPD EPTPD
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| 69 | # define PSHWPD PEPTPD
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| 70 | # define SHWPDE EPTPDE
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| 71 | # define PSHWPDE PEPTPDE
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| 72 | # define SHW_PDE_PG_MASK EPT_PDE_PG_MASK
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| 73 | # define SHW_PD_SHIFT EPT_PD_SHIFT
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| 74 | # define SHW_PD_MASK EPT_PD_MASK
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| 75 | # define SHW_PTE_PG_MASK EPT_PTE_PG_MASK
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| 76 | # define SHW_PT_SHIFT EPT_PT_SHIFT
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| 77 | # define SHW_PT_MASK EPT_PT_MASK
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| 78 | # define SHW_PDPT_SHIFT EPT_PDPT_SHIFT
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| 79 | # define SHW_PDPT_MASK EPT_PDPT_MASK
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| 80 | # define SHW_PDPE_PG_MASK EPT_PDPE_PG_MASK
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| 81 | # define SHW_TOTAL_PD_ENTRIES (EPT_PG_AMD64_ENTRIES*EPT_PG_AMD64_PDPE_ENTRIES)
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| 82 | # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_NESTED_ROOT /* do not use! exception is real mode & protected mode without paging. */
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| 83 |
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| 84 | #else
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| 85 | # define SHWPT X86PTPAE
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| 86 | # define PSHWPT PX86PTPAE
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| 87 | # define SHWPTE X86PTEPAE
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| 88 | # define PSHWPTE PX86PTEPAE
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| 89 | # define SHWPD X86PDPAE
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| 90 | # define PSHWPD PX86PDPAE
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| 91 | # define SHWPDE X86PDEPAE
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| 92 | # define PSHWPDE PX86PDEPAE
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| 93 | # define SHW_PDE_PG_MASK X86_PDE_PAE_PG_MASK
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| 94 | # define SHW_PD_SHIFT X86_PD_PAE_SHIFT
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| 95 | # define SHW_PD_MASK X86_PD_PAE_MASK
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| 96 | # define SHW_PTE_PG_MASK X86_PTE_PAE_PG_MASK
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| 97 | # define SHW_PT_SHIFT X86_PT_PAE_SHIFT
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| 98 | # define SHW_PT_MASK X86_PT_PAE_MASK
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| 99 |
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| 100 | # if PGM_SHW_TYPE == PGM_TYPE_AMD64
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| 101 | # define SHW_PDPT_SHIFT X86_PDPT_SHIFT
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| 102 | # define SHW_PDPT_MASK X86_PDPT_MASK_AMD64
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| 103 | # define SHW_PDPE_PG_MASK X86_PDPE_PG_MASK
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| 104 | # define SHW_TOTAL_PD_ENTRIES (X86_PG_AMD64_ENTRIES*X86_PG_AMD64_PDPE_ENTRIES)
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| 105 | # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_AMD64_CR3
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| 106 |
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| 107 | # else /* 32 bits PAE mode */
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| 108 | # define SHW_PDPT_SHIFT X86_PDPT_SHIFT
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| 109 | # define SHW_PDPT_MASK X86_PDPT_MASK_PAE
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| 110 | # define SHW_PDPE_PG_MASK X86_PDPE_PG_MASK
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| 111 | # define SHW_TOTAL_PD_ENTRIES (X86_PG_PAE_ENTRIES*X86_PG_PAE_PDPE_ENTRIES)
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| 112 | # ifdef VBOX_WITH_PGMPOOL_PAGING_ONLY
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| 113 | # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_PDPT
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| 114 | # else
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| 115 | # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_PAE_PD
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| 116 | # endif
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| 117 |
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| 118 | # endif
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| 119 | #endif
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| 120 |
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| 121 |
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| 122 | /*******************************************************************************
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| 123 | * Internal Functions *
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| 124 | *******************************************************************************/
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| 125 | __BEGIN_DECLS
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| 126 | /* r3 */
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| 127 | PGM_SHW_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0);
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| 128 | PGM_SHW_DECL(int, Enter)(PVM pVM);
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| 129 | PGM_SHW_DECL(int, Relocate)(PVM pVM, RTGCPTR offDelta);
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| 130 | PGM_SHW_DECL(int, Exit)(PVM pVM);
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| 131 |
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| 132 | /* all */
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| 133 | PGM_SHW_DECL(int, GetPage)(PVM pVM, RTGCPTR GCPtr, uint64_t *pfFlags, PRTHCPHYS pHCPhys);
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| 134 | PGM_SHW_DECL(int, ModifyPage)(PVM pVM, RTGCPTR GCPtr, size_t cb, uint64_t fFlags, uint64_t fMask);
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| 135 | __END_DECLS
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| 136 |
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| 137 |
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| 138 | /**
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| 139 | * Initializes the guest bit of the paging mode data.
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| 140 | *
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| 141 | * @returns VBox status code.
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| 142 | * @param pVM The VM handle.
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| 143 | * @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
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| 144 | * This is used early in the init process to avoid trouble with PDM
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| 145 | * not being initialized yet.
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| 146 | */
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| 147 | PGM_SHW_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0)
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| 148 | {
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| 149 | Assert(pModeData->uShwType == PGM_SHW_TYPE || pModeData->uShwType == PGM_TYPE_NESTED);
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| 150 |
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| 151 | /* Ring-3 */
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| 152 | pModeData->pfnR3ShwRelocate = PGM_SHW_NAME(Relocate);
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| 153 | pModeData->pfnR3ShwExit = PGM_SHW_NAME(Exit);
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| 154 | pModeData->pfnR3ShwGetPage = PGM_SHW_NAME(GetPage);
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| 155 | pModeData->pfnR3ShwModifyPage = PGM_SHW_NAME(ModifyPage);
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| 156 |
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| 157 | if (fResolveGCAndR0)
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| 158 | {
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| 159 | int rc;
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| 160 |
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| 161 | #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. */
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| 162 | /* GC */
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| 163 | rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_SHW_NAME_RC_STR(GetPage), &pModeData->pfnRCShwGetPage);
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| 164 | AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_SHW_NAME_RC_STR(GetPage), rc), rc);
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| 165 | rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_SHW_NAME_RC_STR(ModifyPage), &pModeData->pfnRCShwModifyPage);
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| 166 | AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_SHW_NAME_RC_STR(ModifyPage), rc), rc);
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| 167 | #endif /* Not AMD64 shadow paging. */
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| 168 |
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| 169 | /* Ring-0 */
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| 170 | rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_SHW_NAME_R0_STR(GetPage), &pModeData->pfnR0ShwGetPage);
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| 171 | AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_SHW_NAME_R0_STR(GetPage), rc), rc);
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| 172 | rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_SHW_NAME_R0_STR(ModifyPage), &pModeData->pfnR0ShwModifyPage);
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| 173 | AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_SHW_NAME_R0_STR(ModifyPage), rc), rc);
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| 174 | }
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| 175 | return VINF_SUCCESS;
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| 176 | }
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| 177 |
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| 178 | /**
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| 179 | * Enters the shadow mode.
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| 180 | *
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| 181 | * @returns VBox status code.
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| 182 | * @param pVM VM handle.
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| 183 | */
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| 184 | PGM_SHW_DECL(int, Enter)(PVM pVM)
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| 185 | {
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| 186 | #if PGM_SHW_TYPE == PGM_TYPE_NESTED
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| 187 | Assert(HWACCMIsNestedPagingActive(pVM));
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| 188 |
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| 189 | Log(("Enter nested shadow paging mode: root %RHv phys %RHp\n", pVM->pgm.s.pShwNestedRootR3, pVM->pgm.s.HCPhysShwNestedRoot));
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| 190 | /* In non-nested mode we allocate the PML4 page on-demand; in nested mode we just use our fixed nested paging root. */
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| 191 | pVM->pgm.s.pShwRootR3 = (R3PTRTYPE(void *))pVM->pgm.s.pShwNestedRootR3;
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| 192 | # ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
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| 193 | pVM->pgm.s.pShwRootR0 = (R0PTRTYPE(void *))pVM->pgm.s.pShwNestedRootR0;
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| 194 | # endif
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| 195 | pVM->pgm.s.HCPhysShwCR3 = pVM->pgm.s.HCPhysShwNestedRoot;
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| 196 | #endif
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| 197 |
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| 198 | #ifndef VBOX_WITH_PGMPOOL_PAGING_ONLY
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| 199 | CPUMSetHyperCR3(pVM, PGMGetHyperCR3(pVM));
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| 200 | #endif
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| 201 |
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| 202 | return VINF_SUCCESS;
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| 203 | }
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| 204 |
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| 205 |
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| 206 | /**
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| 207 | * Relocate any GC pointers related to shadow mode paging.
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| 208 | *
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| 209 | * @returns VBox status code.
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| 210 | * @param pVM The VM handle.
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| 211 | * @param offDelta The reloation offset.
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| 212 | */
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| 213 | PGM_SHW_DECL(int, Relocate)(PVM pVM, RTGCPTR offDelta)
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| 214 | {
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| 215 | /* nothing special to do here - InitData does the job. */
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| 216 | return VINF_SUCCESS;
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| 217 | }
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| 218 |
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| 219 |
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| 220 | /**
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| 221 | * Exits the shadow mode.
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| 222 | *
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| 223 | * @returns VBox status code.
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| 224 | * @param pVM VM handle.
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| 225 | */
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| 226 | PGM_SHW_DECL(int, Exit)(PVM pVM)
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| 227 | {
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| 228 | #if PGM_SHW_TYPE == PGM_TYPE_NESTED
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| 229 | Assert(HWACCMIsNestedPagingActive(pVM));
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| 230 | pVM->pgm.s.pShwRootR3 = 0;
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| 231 | # ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
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| 232 | pVM->pgm.s.pShwRootR0 = 0;
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| 233 | # endif
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| 234 | pVM->pgm.s.HCPhysShwCR3 = 0;
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| 235 | Log(("Leave nested shadow paging mode\n"));
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| 236 | #endif
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| 237 |
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| 238 | return VINF_SUCCESS;
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| 239 | }
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| 240 |
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| 241 |
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| 242 |
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