| 1 | /* $Id: PGMMap.cpp 91854 2021-10-20 00:50:11Z vboxsync $ */
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| 2 | /** @file
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| 3 | * PGM - Page Manager, Guest Context Mappings.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2020 Oracle Corporation
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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 |
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| 18 |
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| 19 | /*********************************************************************************************************************************
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| 20 | * Header Files *
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| 21 | *********************************************************************************************************************************/
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| 22 | #define LOG_GROUP LOG_GROUP_PGM
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| 23 | #include <VBox/vmm/pgm.h>
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| 24 | #include "PGMInternal.h"
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| 25 | #include <VBox/vmm/vm.h>
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| 26 |
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| 27 | #include <VBox/log.h>
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| 28 | #include <iprt/errcore.h>
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| 29 |
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| 30 |
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| 31 | /**
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| 32 | * Gets the size of the current guest mappings if they were to be
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| 33 | * put next to one another.
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| 34 | *
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| 35 | * @returns VBox status code.
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| 36 | * @param pVM The cross context VM structure.
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| 37 | * @param pcb Where to store the size.
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| 38 | */
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| 39 | VMMR3DECL(int) PGMR3MappingsSize(PVM pVM, uint32_t *pcb)
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| 40 | {
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| 41 | RT_NOREF(pVM);
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| 42 | *pcb = 0;
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| 43 | Log(("PGMR3MappingsSize: returns zero\n"));
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| 44 | return VINF_SUCCESS;
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| 45 | }
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| 46 |
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| 47 |
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| 48 | /**
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| 49 | * Fixates the guest context mappings in a range reserved from the Guest OS.
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| 50 | *
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| 51 | * @returns VBox status code.
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| 52 | * @param pVM The cross context VM structure.
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| 53 | * @param GCPtrBase The address of the reserved range of guest memory.
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| 54 | * @param cb The size of the range starting at GCPtrBase.
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| 55 | */
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| 56 | VMMR3DECL(int) PGMR3MappingsFix(PVM pVM, RTGCPTR GCPtrBase, uint32_t cb)
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| 57 | {
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| 58 | Log(("PGMR3MappingsFix: GCPtrBase=%RGv cb=%#x\n", GCPtrBase, cb));
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| 59 | RT_NOREF(pVM, GCPtrBase, cb);
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| 60 | return VINF_SUCCESS;
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| 61 | }
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| 62 |
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| 63 |
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| 64 | /**
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| 65 | * Unfixes the mappings.
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| 66 | *
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| 67 | * Unless PGMR3MappingsDisable is in effect, mapping conflict detection will be
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| 68 | * enabled after this call. If the mappings are fixed, a full CR3 resync will
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| 69 | * take place afterwards.
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| 70 | *
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| 71 | * @returns VBox status code.
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| 72 | * @param pVM The cross context VM structure.
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| 73 | */
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| 74 | VMMR3DECL(int) PGMR3MappingsUnfix(PVM pVM)
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| 75 | {
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| 76 | Log(("PGMR3MappingsUnfix:\n"));
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| 77 | RT_NOREF(pVM);
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| 78 | return VINF_SUCCESS;
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| 79 | }
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| 80 |
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