VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMR0/GMMR0Internal.h@ 87792

Last change on this file since 87792 was 82991, checked in by vboxsync, 5 years ago

VMM/GMMR0: Added TLB statistics for GMMR0PageIdToVirt. [oops] bugref:9627

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 3.7 KB
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1/* $Id: GMMR0Internal.h 82991 2020-02-05 11:46:05Z vboxsync $ */
2/** @file
3 * GMM - The Global Memory Manager, Internal Header.
4 */
5
6/*
7 * Copyright (C) 2007-2020 Oracle Corporation
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
18#ifndef VMM_INCLUDED_SRC_VMMR0_GMMR0Internal_h
19#define VMM_INCLUDED_SRC_VMMR0_GMMR0Internal_h
20#ifndef RT_WITHOUT_PRAGMA_ONCE
21# pragma once
22#endif
23
24#include <VBox/vmm/gmm.h>
25#include <iprt/avl.h>
26
27
28/**
29 * Shared module registration info (per VM)
30 */
31typedef struct GMMSHAREDMODULEPERVM
32{
33 /** Tree node. */
34 AVLGCPTRNODECORE Core;
35 /** Pointer to global shared module info. */
36 PGMMSHAREDMODULE pGlobalModule;
37 /** Pointer to the region addresses.
38 *
39 * They can differe between VMs because of address space scrambling or
40 * simply different loading order. */
41 RTGCPTR64 aRegionsGCPtrs[1];
42} GMMSHAREDMODULEPERVM;
43/** Pointer to a GMMSHAREDMODULEPERVM. */
44typedef GMMSHAREDMODULEPERVM *PGMMSHAREDMODULEPERVM;
45
46
47/** Pointer to a GMM allocation chunk. */
48typedef struct GMMCHUNK *PGMMCHUNK;
49
50
51/** The GMMCHUNK::cFree shift count employed by gmmR0SelectFreeSetList. */
52#define GMM_CHUNK_FREE_SET_SHIFT 4
53/** Index of the list containing completely unused chunks.
54 * The code ASSUMES this is the last list. */
55#define GMM_CHUNK_FREE_SET_UNUSED_LIST (GMM_CHUNK_NUM_PAGES >> GMM_CHUNK_FREE_SET_SHIFT)
56
57/**
58 * A set of free chunks.
59 */
60typedef struct GMMCHUNKFREESET
61{
62 /** The number of free pages in the set. */
63 uint64_t cFreePages;
64 /** The generation ID for the set. This is incremented whenever
65 * something is linked or unlinked from this set. */
66 uint64_t idGeneration;
67 /** Chunks ordered by increasing number of free pages.
68 * In the final list the chunks are completely unused. */
69 PGMMCHUNK apLists[GMM_CHUNK_FREE_SET_UNUSED_LIST + 1];
70} GMMCHUNKFREESET;
71
72
73/**
74 * A per-VM allocation chunk lookup TLB entry (for GMMR0PageIdToVirt).
75 */
76typedef struct GMMPERVMCHUNKTLBE
77{
78 /** The GMM::idFreeGeneration value this is valid for. */
79 uint64_t idGeneration;
80 /** The chunk. */
81 PGMMCHUNK pChunk;
82} GMMPERVMCHUNKTLBE;
83/** Poitner to a per-VM allocation chunk TLB entry. */
84typedef GMMPERVMCHUNKTLBE *PGMMPERVMCHUNKTLBE;
85
86/** The number of entries in the allocation chunk lookup TLB. */
87#define GMMPERVM_CHUNKTLB_ENTRIES 32
88/** Gets the TLB entry index for the given Chunk ID. */
89#define GMMPERVM_CHUNKTLB_IDX(a_idChunk) ( (a_idChunk) & (GMMPERVM_CHUNKTLB_ENTRIES - 1) )
90
91
92/**
93 * The per-VM GMM data.
94 */
95typedef struct GMMPERVM
96{
97 /** Free set for use in bound mode. */
98 GMMCHUNKFREESET Private;
99 /** The VM statistics. */
100 GMMVMSTATS Stats;
101 /** Shared module tree (per-vm). */
102 PAVLGCPTRNODECORE pSharedModuleTree;
103 /** Hints at the last chunk we allocated some memory from. */
104 uint32_t idLastChunkHint;
105 uint32_t u32Padding;
106
107 /** Spinlock protecting the chunk lookup TLB. */
108 RTSPINLOCK hChunkTlbSpinLock;
109 /** The chunk lookup TLB used by GMMR0PageIdToVirt. */
110 GMMPERVMCHUNKTLBE aChunkTlbEntries[GMMPERVM_CHUNKTLB_ENTRIES];
111} GMMPERVM;
112/** Pointer to the per-VM GMM data. */
113typedef GMMPERVM *PGMMPERVM;
114
115#endif /* !VMM_INCLUDED_SRC_VMMR0_GMMR0Internal_h */
116
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