| 1 | /* $Id: PGMPool.cpp 93554 2022-02-02 22:57:02Z vboxsync $ */
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| 2 | /** @file
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| 3 | * PGM Shadow Page Pool.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2022 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.alldomusa.eu.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 | /** @page pg_pgm_pool PGM Shadow Page Pool
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| 19 | *
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| 20 | * Motivations:
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| 21 | * -# Relationship between shadow page tables and physical guest pages. This
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| 22 | * should allow us to skip most of the global flushes now following access
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| 23 | * handler changes. The main expense is flushing shadow pages.
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| 24 | * -# Limit the pool size if necessary (default is kind of limitless).
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| 25 | * -# Allocate shadow pages from RC. We use to only do this in SyncCR3.
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| 26 | * -# Required for 64-bit guests.
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| 27 | * -# Combining the PD cache and page pool in order to simplify caching.
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| 28 | *
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| 29 | *
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| 30 | * @section sec_pgm_pool_outline Design Outline
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| 31 | *
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| 32 | * The shadow page pool tracks pages used for shadowing paging structures (i.e.
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| 33 | * page tables, page directory, page directory pointer table and page map
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| 34 | * level-4). Each page in the pool has an unique identifier. This identifier is
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| 35 | * used to link a guest physical page to a shadow PT. The identifier is a
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| 36 | * non-zero value and has a relativly low max value - say 14 bits. This makes it
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| 37 | * possible to fit it into the upper bits of the of the aHCPhys entries in the
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| 38 | * ram range.
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| 39 | *
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| 40 | * By restricting host physical memory to the first 48 bits (which is the
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| 41 | * announced physical memory range of the K8L chip (scheduled for 2008)), we
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| 42 | * can safely use the upper 16 bits for shadow page ID and reference counting.
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| 43 | *
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| 44 | * Update: The 48 bit assumption will be lifted with the new physical memory
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| 45 | * management (PGMPAGE), so we won't have any trouble when someone stuffs 2TB
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| 46 | * into a box in some years.
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| 47 | *
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| 48 | * Now, it's possible for a page to be aliased, i.e. mapped by more than one PT
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| 49 | * or PD. This is solved by creating a list of physical cross reference extents
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| 50 | * when ever this happens. Each node in the list (extent) is can contain 3 page
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| 51 | * pool indexes. The list it self is chained using indexes into the paPhysExt
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| 52 | * array.
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| 53 | *
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| 54 | *
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| 55 | * @section sec_pgm_pool_life Life Cycle of a Shadow Page
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| 56 | *
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| 57 | * -# The SyncPT function requests a page from the pool.
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| 58 | * The request includes the kind of page it is (PT/PD, PAE/legacy), the
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| 59 | * address of the page it's shadowing, and more.
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| 60 | * -# The pool responds to the request by allocating a new page.
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| 61 | * When the cache is enabled, it will first check if it's in the cache.
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| 62 | * Should the pool be exhausted, one of two things can be done:
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| 63 | * -# Flush the whole pool and current CR3.
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| 64 | * -# Use the cache to find a page which can be flushed (~age).
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| 65 | * -# The SyncPT function will sync one or more pages and insert it into the
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| 66 | * shadow PD.
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| 67 | * -# The SyncPage function may sync more pages on a later \#PFs.
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| 68 | * -# The page is freed / flushed in SyncCR3 (perhaps) and some other cases.
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| 69 | * When caching is enabled, the page isn't flush but remains in the cache.
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| 70 | *
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| 71 | *
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| 72 | * @section sec_pgm_pool_monitoring Monitoring
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| 73 | *
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| 74 | * We always monitor GUEST_PAGE_SIZE chunks of memory. When we've got multiple
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| 75 | * shadow pages for the same GUEST_PAGE_SIZE of guest memory (PAE and mixed
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| 76 | * PD/PT) the pages sharing the monitor get linked using the
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| 77 | * iMonitoredNext/Prev. The head page is the pvUser to the access handlers.
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| 78 | *
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| 79 | *
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| 80 | * @section sec_pgm_pool_impl Implementation
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| 81 | *
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| 82 | * The pool will take pages from the MM page pool. The tracking data
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| 83 | * (attributes, bitmaps and so on) are allocated from the hypervisor heap. The
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| 84 | * pool content can be accessed both by using the page id and the physical
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| 85 | * address (HC). The former is managed by means of an array, the latter by an
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| 86 | * offset based AVL tree.
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| 87 | *
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| 88 | * Flushing of a pool page means that we iterate the content (we know what kind
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| 89 | * it is) and updates the link information in the ram range.
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| 90 | *
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| 91 | * ...
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| 92 | */
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| 93 |
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| 94 |
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| 95 | /*********************************************************************************************************************************
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| 96 | * Header Files *
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| 97 | *********************************************************************************************************************************/
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| 98 | #define LOG_GROUP LOG_GROUP_PGM_POOL
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| 99 | #define VBOX_WITHOUT_PAGING_BIT_FIELDS /* 64-bit bitfields are just asking for trouble. See @bugref{9841} and others. */
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| 100 | #include <VBox/vmm/pgm.h>
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| 101 | #include <VBox/vmm/mm.h>
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| 102 | #include "PGMInternal.h"
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| 103 | #include <VBox/vmm/vm.h>
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| 104 | #include <VBox/vmm/uvm.h>
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| 105 | #include "PGMInline.h"
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| 106 |
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| 107 | #include <VBox/log.h>
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| 108 | #include <VBox/err.h>
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| 109 | #include <iprt/asm.h>
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| 110 | #include <iprt/string.h>
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| 111 | #include <VBox/dbg.h>
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| 112 |
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| 113 |
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| 114 | /*********************************************************************************************************************************
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| 115 | * Internal Functions *
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| 116 | *********************************************************************************************************************************/
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| 117 | #ifdef VBOX_WITH_DEBUGGER
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| 118 | static FNDBGCCMD pgmR3PoolCmdCheck;
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| 119 | #endif
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| 120 |
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| 121 | #ifdef VBOX_WITH_DEBUGGER
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| 122 | /** Command descriptors. */
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| 123 | static const DBGCCMD g_aCmds[] =
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| 124 | {
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| 125 | /* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, fFlags, pfnHandler pszSyntax, ....pszDescription */
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| 126 | { "pgmpoolcheck", 0, 0, NULL, 0, 0, pgmR3PoolCmdCheck, "", "Check the pgm pool pages." },
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| 127 | };
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| 128 | #endif
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| 129 |
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| 130 | /**
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| 131 | * Initializes the pool
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| 132 | *
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| 133 | * @returns VBox status code.
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| 134 | * @param pVM The cross context VM structure.
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| 135 | */
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| 136 | int pgmR3PoolInit(PVM pVM)
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| 137 | {
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| 138 | int rc;
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| 139 |
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| 140 | AssertCompile(NIL_PGMPOOL_IDX == 0);
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| 141 | /* pPage->cLocked is an unsigned byte. */
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| 142 | AssertCompile(VMM_MAX_CPU_COUNT <= 255);
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| 143 |
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| 144 | /*
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| 145 | * Query Pool config.
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| 146 | */
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| 147 | PCFGMNODE pCfg = CFGMR3GetChild(CFGMR3GetRoot(pVM), "/PGM/Pool");
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| 148 |
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| 149 | /* Default pgm pool size is 1024 pages (4MB). */
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| 150 | uint16_t cMaxPages = 1024;
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| 151 |
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| 152 | /* Adjust it up relative to the RAM size, using the nested paging formula. */
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| 153 | uint64_t cbRam;
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| 154 | rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRam, 0); AssertRCReturn(rc, rc);
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| 155 | /** @todo guest x86 specific */
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| 156 | uint64_t u64MaxPages = (cbRam >> 9)
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| 157 | + (cbRam >> 18)
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| 158 | + (cbRam >> 27)
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| 159 | + 32 * GUEST_PAGE_SIZE;
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| 160 | u64MaxPages >>= GUEST_PAGE_SHIFT;
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| 161 | if (u64MaxPages > PGMPOOL_IDX_LAST)
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| 162 | cMaxPages = PGMPOOL_IDX_LAST;
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| 163 | else
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| 164 | cMaxPages = (uint16_t)u64MaxPages;
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| 165 |
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| 166 | /** @cfgm{/PGM/Pool/MaxPages, uint16_t, \#pages, 16, 0x3fff, F(ram-size)}
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| 167 | * The max size of the shadow page pool in pages. The pool will grow dynamically
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| 168 | * up to this limit.
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| 169 | */
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| 170 | rc = CFGMR3QueryU16Def(pCfg, "MaxPages", &cMaxPages, cMaxPages);
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| 171 | AssertLogRelRCReturn(rc, rc);
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| 172 | AssertLogRelMsgReturn(cMaxPages <= PGMPOOL_IDX_LAST && cMaxPages >= RT_ALIGN(PGMPOOL_IDX_FIRST, 16),
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| 173 | ("cMaxPages=%u (%#x)\n", cMaxPages, cMaxPages), VERR_INVALID_PARAMETER);
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| 174 | AssertCompile(RT_IS_POWER_OF_TWO(PGMPOOL_CFG_MAX_GROW));
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| 175 | if (cMaxPages < PGMPOOL_IDX_LAST)
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| 176 | cMaxPages = RT_ALIGN(cMaxPages, PGMPOOL_CFG_MAX_GROW / 2);
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| 177 | if (cMaxPages > PGMPOOL_IDX_LAST)
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| 178 | cMaxPages = PGMPOOL_IDX_LAST;
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| 179 | LogRel(("PGM: PGMPool: cMaxPages=%u (u64MaxPages=%llu)\n", cMaxPages, u64MaxPages));
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| 180 |
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| 181 | /** @todo
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| 182 | * We need to be much more careful with our allocation strategy here.
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| 183 | * For nested paging we don't need pool user info nor extents at all, but
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| 184 | * we can't check for nested paging here (too early during init to get a
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| 185 | * confirmation it can be used). The default for large memory configs is a
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| 186 | * bit large for shadow paging, so I've restricted the extent maximum to 8k
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| 187 | * (8k * 16 = 128k of hyper heap).
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| 188 | *
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| 189 | * Also when large page support is enabled, we typically don't need so much,
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| 190 | * although that depends on the availability of 2 MB chunks on the host.
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| 191 | */
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| 192 |
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| 193 | /** @cfgm{/PGM/Pool/MaxUsers, uint16_t, \#users, MaxUsers, 32K, MaxPages*2}
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| 194 | * The max number of shadow page user tracking records. Each shadow page has
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| 195 | * zero of other shadow pages (or CR3s) that references it, or uses it if you
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| 196 | * like. The structures describing these relationships are allocated from a
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| 197 | * fixed sized pool. This configuration variable defines the pool size.
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| 198 | */
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| 199 | uint16_t cMaxUsers;
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| 200 | rc = CFGMR3QueryU16Def(pCfg, "MaxUsers", &cMaxUsers, cMaxPages * 2);
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| 201 | AssertLogRelRCReturn(rc, rc);
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| 202 | AssertLogRelMsgReturn(cMaxUsers >= cMaxPages && cMaxPages <= _32K,
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| 203 | ("cMaxUsers=%u (%#x)\n", cMaxUsers, cMaxUsers), VERR_INVALID_PARAMETER);
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| 204 |
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| 205 | /** @cfgm{/PGM/Pool/MaxPhysExts, uint16_t, \#extents, 16, MaxPages * 2, MIN(MaxPages*2\,8192)}
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| 206 | * The max number of extents for tracking aliased guest pages.
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| 207 | */
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| 208 | uint16_t cMaxPhysExts;
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| 209 | rc = CFGMR3QueryU16Def(pCfg, "MaxPhysExts", &cMaxPhysExts,
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| 210 | RT_MIN(cMaxPages * 2, 8192 /* 8Ki max as this eat too much hyper heap */));
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| 211 | AssertLogRelRCReturn(rc, rc);
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| 212 | AssertLogRelMsgReturn(cMaxPhysExts >= 16 && cMaxPhysExts <= PGMPOOL_IDX_LAST,
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| 213 | ("cMaxPhysExts=%u (%#x)\n", cMaxPhysExts, cMaxPhysExts), VERR_INVALID_PARAMETER);
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| 214 |
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| 215 | /** @cfgm{/PGM/Pool/ChacheEnabled, bool, true}
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| 216 | * Enables or disabling caching of shadow pages. Caching means that we will try
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| 217 | * reuse shadow pages instead of recreating them everything SyncCR3, SyncPT or
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| 218 | * SyncPage requests one. When reusing a shadow page, we can save time
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| 219 | * reconstructing it and it's children.
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| 220 | */
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| 221 | bool fCacheEnabled;
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| 222 | rc = CFGMR3QueryBoolDef(pCfg, "CacheEnabled", &fCacheEnabled, true);
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| 223 | AssertLogRelRCReturn(rc, rc);
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| 224 |
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| 225 | LogRel(("PGM: pgmR3PoolInit: cMaxPages=%#RX16 cMaxUsers=%#RX16 cMaxPhysExts=%#RX16 fCacheEnable=%RTbool\n",
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| 226 | cMaxPages, cMaxUsers, cMaxPhysExts, fCacheEnabled));
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| 227 |
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| 228 | /*
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| 229 | * Allocate the data structures.
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| 230 | */
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| 231 | uint32_t cb = RT_UOFFSETOF_DYN(PGMPOOL, aPages[cMaxPages]);
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| 232 | cb += cMaxUsers * sizeof(PGMPOOLUSER);
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| 233 | cb += cMaxPhysExts * sizeof(PGMPOOLPHYSEXT);
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| 234 | PPGMPOOL pPool;
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| 235 | rc = MMR3HyperAllocOnceNoRel(pVM, cb, 0, MM_TAG_PGM_POOL, (void **)&pPool);
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| 236 | if (RT_FAILURE(rc))
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| 237 | return rc;
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| 238 | pVM->pgm.s.pPoolR3 = pPool;
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| 239 | pVM->pgm.s.pPoolR0 = MMHyperR3ToR0(pVM, pPool);
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| 240 |
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| 241 | /*
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| 242 | * Initialize it.
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| 243 | */
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| 244 | pPool->pVMR3 = pVM;
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| 245 | pPool->pVMR0 = pVM->pVMR0ForCall;
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| 246 | pPool->cMaxPages = cMaxPages;
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| 247 | pPool->cCurPages = PGMPOOL_IDX_FIRST;
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| 248 | pPool->iUserFreeHead = 0;
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| 249 | pPool->cMaxUsers = cMaxUsers;
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| 250 | PPGMPOOLUSER paUsers = (PPGMPOOLUSER)&pPool->aPages[pPool->cMaxPages];
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| 251 | pPool->paUsersR3 = paUsers;
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| 252 | pPool->paUsersR0 = MMHyperR3ToR0(pVM, paUsers);
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| 253 | for (unsigned i = 0; i < cMaxUsers; i++)
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| 254 | {
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| 255 | paUsers[i].iNext = i + 1;
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| 256 | paUsers[i].iUser = NIL_PGMPOOL_IDX;
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| 257 | paUsers[i].iUserTable = 0xfffffffe;
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| 258 | }
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| 259 | paUsers[cMaxUsers - 1].iNext = NIL_PGMPOOL_USER_INDEX;
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| 260 | pPool->iPhysExtFreeHead = 0;
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| 261 | pPool->cMaxPhysExts = cMaxPhysExts;
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| 262 | PPGMPOOLPHYSEXT paPhysExts = (PPGMPOOLPHYSEXT)&paUsers[cMaxUsers];
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| 263 | pPool->paPhysExtsR3 = paPhysExts;
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| 264 | pPool->paPhysExtsR0 = MMHyperR3ToR0(pVM, paPhysExts);
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| 265 | for (unsigned i = 0; i < cMaxPhysExts; i++)
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| 266 | {
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| 267 | paPhysExts[i].iNext = i + 1;
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| 268 | paPhysExts[i].aidx[0] = NIL_PGMPOOL_IDX;
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| 269 | paPhysExts[i].apte[0] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
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| 270 | paPhysExts[i].aidx[1] = NIL_PGMPOOL_IDX;
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| 271 | paPhysExts[i].apte[1] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
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| 272 | paPhysExts[i].aidx[2] = NIL_PGMPOOL_IDX;
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| 273 | paPhysExts[i].apte[2] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
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| 274 | }
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| 275 | paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
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| 276 | for (unsigned i = 0; i < RT_ELEMENTS(pPool->aiHash); i++)
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| 277 | pPool->aiHash[i] = NIL_PGMPOOL_IDX;
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| 278 | pPool->iAgeHead = NIL_PGMPOOL_IDX;
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| 279 | pPool->iAgeTail = NIL_PGMPOOL_IDX;
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| 280 | pPool->fCacheEnabled = fCacheEnabled;
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| 281 |
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| 282 | pPool->hAccessHandlerType = NIL_PGMPHYSHANDLERTYPE;
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| 283 | rc = PGMR3HandlerPhysicalTypeRegister(pVM, PGMPHYSHANDLERKIND_WRITE, true /*fKeepPgmLock*/,
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| 284 | pgmPoolAccessHandler,
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| 285 | NULL, "pgmPoolAccessHandler", "pgmRZPoolAccessPfHandler",
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| 286 | NULL, "pgmPoolAccessHandler", "pgmRZPoolAccessPfHandler",
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| 287 | "Guest Paging Access Handler",
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| 288 | &pPool->hAccessHandlerType);
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| 289 | AssertLogRelRCReturn(rc, rc);
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| 290 |
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| 291 | pPool->HCPhysTree = 0;
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| 292 |
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| 293 | /*
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| 294 | * The NIL entry.
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| 295 | */
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| 296 | Assert(NIL_PGMPOOL_IDX == 0);
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| 297 | pPool->aPages[NIL_PGMPOOL_IDX].enmKind = PGMPOOLKIND_INVALID;
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| 298 | pPool->aPages[NIL_PGMPOOL_IDX].idx = NIL_PGMPOOL_IDX;
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| 299 | pPool->aPages[NIL_PGMPOOL_IDX].Core.Key = NIL_RTHCPHYS;
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| 300 | pPool->aPages[NIL_PGMPOOL_IDX].GCPhys = NIL_RTGCPHYS;
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| 301 | pPool->aPages[NIL_PGMPOOL_IDX].iNext = NIL_PGMPOOL_IDX;
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| 302 | /* pPool->aPages[NIL_PGMPOOL_IDX].cLocked = INT32_MAX; - test this out... */
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| 303 | pPool->aPages[NIL_PGMPOOL_IDX].pvPageR3 = 0;
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| 304 | pPool->aPages[NIL_PGMPOOL_IDX].iUserHead = NIL_PGMPOOL_USER_INDEX;
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| 305 | pPool->aPages[NIL_PGMPOOL_IDX].iModifiedNext = NIL_PGMPOOL_IDX;
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| 306 | pPool->aPages[NIL_PGMPOOL_IDX].iModifiedPrev = NIL_PGMPOOL_IDX;
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| 307 | pPool->aPages[NIL_PGMPOOL_IDX].iMonitoredNext = NIL_PGMPOOL_IDX;
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| 308 | pPool->aPages[NIL_PGMPOOL_IDX].iMonitoredPrev = NIL_PGMPOOL_IDX;
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| 309 | pPool->aPages[NIL_PGMPOOL_IDX].iAgeNext = NIL_PGMPOOL_IDX;
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| 310 | pPool->aPages[NIL_PGMPOOL_IDX].iAgePrev = NIL_PGMPOOL_IDX;
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| 311 |
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| 312 | Assert(pPool->aPages[NIL_PGMPOOL_IDX].idx == NIL_PGMPOOL_IDX);
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| 313 | Assert(pPool->aPages[NIL_PGMPOOL_IDX].GCPhys == NIL_RTGCPHYS);
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| 314 | Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fSeenNonGlobal);
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| 315 | Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fMonitored);
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| 316 | Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fCached);
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| 317 | Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fZeroed);
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| 318 | Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fReusedFlushPending);
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| 319 |
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| 320 | /*
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| 321 | * Register statistics.
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| 322 | */
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| 323 | STAM_REL_REG(pVM, &pPool->StatGrow, STAMTYPE_PROFILE, "/PGM/Pool/Grow", STAMUNIT_TICKS_PER_CALL, "Profiling PGMR0PoolGrow");
|
|---|
| 324 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 325 | STAM_REG(pVM, &pPool->cCurPages, STAMTYPE_U16, "/PGM/Pool/cCurPages", STAMUNIT_PAGES, "Current pool size.");
|
|---|
| 326 | STAM_REG(pVM, &pPool->cMaxPages, STAMTYPE_U16, "/PGM/Pool/cMaxPages", STAMUNIT_PAGES, "Max pool size.");
|
|---|
| 327 | STAM_REG(pVM, &pPool->cUsedPages, STAMTYPE_U16, "/PGM/Pool/cUsedPages", STAMUNIT_PAGES, "The number of pages currently in use.");
|
|---|
| 328 | STAM_REG(pVM, &pPool->cUsedPagesHigh, STAMTYPE_U16_RESET, "/PGM/Pool/cUsedPagesHigh", STAMUNIT_PAGES, "The high watermark for cUsedPages.");
|
|---|
| 329 | STAM_REG(pVM, &pPool->StatAlloc, STAMTYPE_PROFILE_ADV, "/PGM/Pool/Alloc", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolAlloc.");
|
|---|
| 330 | STAM_REG(pVM, &pPool->StatClearAll, STAMTYPE_PROFILE, "/PGM/Pool/ClearAll", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmR3PoolClearAll.");
|
|---|
| 331 | STAM_REG(pVM, &pPool->StatR3Reset, STAMTYPE_PROFILE, "/PGM/Pool/R3Reset", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmR3PoolReset.");
|
|---|
| 332 | STAM_REG(pVM, &pPool->StatFlushPage, STAMTYPE_PROFILE, "/PGM/Pool/FlushPage", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolFlushPage.");
|
|---|
| 333 | STAM_REG(pVM, &pPool->StatFree, STAMTYPE_PROFILE, "/PGM/Pool/Free", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolFree.");
|
|---|
| 334 | STAM_REG(pVM, &pPool->StatForceFlushPage, STAMTYPE_COUNTER, "/PGM/Pool/FlushForce", STAMUNIT_OCCURENCES, "Counting explicit flushes by PGMPoolFlushPage().");
|
|---|
| 335 | STAM_REG(pVM, &pPool->StatForceFlushDirtyPage, STAMTYPE_COUNTER, "/PGM/Pool/FlushForceDirty", STAMUNIT_OCCURENCES, "Counting explicit flushes of dirty pages by PGMPoolFlushPage().");
|
|---|
| 336 | STAM_REG(pVM, &pPool->StatForceFlushReused, STAMTYPE_COUNTER, "/PGM/Pool/FlushReused", STAMUNIT_OCCURENCES, "Counting flushes for reused pages.");
|
|---|
| 337 | STAM_REG(pVM, &pPool->StatZeroPage, STAMTYPE_PROFILE, "/PGM/Pool/ZeroPage", STAMUNIT_TICKS_PER_CALL, "Profiling time spent zeroing pages. Overlaps with Alloc.");
|
|---|
| 338 | STAM_REG(pVM, &pPool->cMaxUsers, STAMTYPE_U16, "/PGM/Pool/Track/cMaxUsers", STAMUNIT_COUNT, "Max user tracking records.");
|
|---|
| 339 | STAM_REG(pVM, &pPool->cPresent, STAMTYPE_U32, "/PGM/Pool/Track/cPresent", STAMUNIT_COUNT, "Number of present page table entries.");
|
|---|
| 340 | STAM_REG(pVM, &pPool->StatTrackDeref, STAMTYPE_PROFILE, "/PGM/Pool/Track/Deref", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolTrackDeref.");
|
|---|
| 341 | STAM_REG(pVM, &pPool->StatTrackFlushGCPhysPT, STAMTYPE_PROFILE, "/PGM/Pool/Track/FlushGCPhysPT", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolTrackFlushGCPhysPT.");
|
|---|
| 342 | STAM_REG(pVM, &pPool->StatTrackFlushGCPhysPTs, STAMTYPE_PROFILE, "/PGM/Pool/Track/FlushGCPhysPTs", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolTrackFlushGCPhysPTs.");
|
|---|
| 343 | STAM_REG(pVM, &pPool->StatTrackFlushGCPhysPTsSlow, STAMTYPE_PROFILE, "/PGM/Pool/Track/FlushGCPhysPTsSlow", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolTrackFlushGCPhysPTsSlow.");
|
|---|
| 344 | STAM_REG(pVM, &pPool->StatTrackFlushEntry, STAMTYPE_COUNTER, "/PGM/Pool/Track/Entry/Flush", STAMUNIT_COUNT, "Nr of flushed entries.");
|
|---|
| 345 | STAM_REG(pVM, &pPool->StatTrackFlushEntryKeep, STAMTYPE_COUNTER, "/PGM/Pool/Track/Entry/Update", STAMUNIT_COUNT, "Nr of updated entries.");
|
|---|
| 346 | STAM_REG(pVM, &pPool->StatTrackFreeUpOneUser, STAMTYPE_COUNTER, "/PGM/Pool/Track/FreeUpOneUser", STAMUNIT_TICKS_PER_CALL, "The number of times we were out of user tracking records.");
|
|---|
| 347 | STAM_REG(pVM, &pPool->StatTrackDerefGCPhys, STAMTYPE_PROFILE, "/PGM/Pool/Track/DrefGCPhys", STAMUNIT_TICKS_PER_CALL, "Profiling deref activity related tracking GC physical pages.");
|
|---|
| 348 | STAM_REG(pVM, &pPool->StatTrackLinearRamSearches, STAMTYPE_COUNTER, "/PGM/Pool/Track/LinearRamSearches", STAMUNIT_OCCURENCES, "The number of times we had to do linear ram searches.");
|
|---|
| 349 | STAM_REG(pVM, &pPool->StamTrackPhysExtAllocFailures,STAMTYPE_COUNTER, "/PGM/Pool/Track/PhysExtAllocFailures", STAMUNIT_OCCURENCES, "The number of failing pgmPoolTrackPhysExtAlloc calls.");
|
|---|
| 350 |
|
|---|
| 351 | STAM_REG(pVM, &pPool->StatMonitorPfRZ, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/#PF", STAMUNIT_TICKS_PER_CALL, "Profiling the RC/R0 #PF access handler.");
|
|---|
| 352 | STAM_REG(pVM, &pPool->StatMonitorPfRZEmulateInstr, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/EmulateInstr", STAMUNIT_OCCURENCES, "Times we've failed interpreting the instruction.");
|
|---|
| 353 | STAM_REG(pVM, &pPool->StatMonitorPfRZFlushPage, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/#PF/FlushPage", STAMUNIT_TICKS_PER_CALL, "Profiling the pgmPoolFlushPage calls made from the RC/R0 access handler.");
|
|---|
| 354 | STAM_REG(pVM, &pPool->StatMonitorPfRZFlushReinit, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/FlushReinit", STAMUNIT_OCCURENCES, "Times we've detected a page table reinit.");
|
|---|
| 355 | STAM_REG(pVM, &pPool->StatMonitorPfRZFlushModOverflow,STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/FlushOverflow", STAMUNIT_OCCURENCES, "Counting flushes for pages that are modified too often.");
|
|---|
| 356 | STAM_REG(pVM, &pPool->StatMonitorPfRZFork, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/Fork", STAMUNIT_OCCURENCES, "Times we've detected fork().");
|
|---|
| 357 | STAM_REG(pVM, &pPool->StatMonitorPfRZHandled, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/#PF/Handled", STAMUNIT_TICKS_PER_CALL, "Profiling the RC/R0 #PF access we've handled (except REP STOSD).");
|
|---|
| 358 | STAM_REG(pVM, &pPool->StatMonitorPfRZIntrFailPatch1, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/IntrFailPatch1", STAMUNIT_OCCURENCES, "Times we've failed interpreting a patch code instruction.");
|
|---|
| 359 | STAM_REG(pVM, &pPool->StatMonitorPfRZIntrFailPatch2, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/IntrFailPatch2", STAMUNIT_OCCURENCES, "Times we've failed interpreting a patch code instruction during flushing.");
|
|---|
| 360 | STAM_REG(pVM, &pPool->StatMonitorPfRZRepPrefix, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/RepPrefix", STAMUNIT_OCCURENCES, "The number of times we've seen rep prefixes we can't handle.");
|
|---|
| 361 | STAM_REG(pVM, &pPool->StatMonitorPfRZRepStosd, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/#PF/RepStosd", STAMUNIT_TICKS_PER_CALL, "Profiling the REP STOSD cases we've handled.");
|
|---|
| 362 |
|
|---|
| 363 | STAM_REG(pVM, &pPool->StatMonitorRZ, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/IEM", STAMUNIT_TICKS_PER_CALL, "Profiling the regular access handler.");
|
|---|
| 364 | STAM_REG(pVM, &pPool->StatMonitorRZFlushPage, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/IEM/FlushPage", STAMUNIT_TICKS_PER_CALL, "Profiling the pgmPoolFlushPage calls made from the regular access handler.");
|
|---|
| 365 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[0], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size01", STAMUNIT_OCCURENCES, "Number of 1 byte accesses.");
|
|---|
| 366 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[1], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size02", STAMUNIT_OCCURENCES, "Number of 2 byte accesses.");
|
|---|
| 367 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[2], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size03", STAMUNIT_OCCURENCES, "Number of 3 byte accesses.");
|
|---|
| 368 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[3], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size04", STAMUNIT_OCCURENCES, "Number of 4 byte accesses.");
|
|---|
| 369 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[4], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size05", STAMUNIT_OCCURENCES, "Number of 5 byte accesses.");
|
|---|
| 370 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[5], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size06", STAMUNIT_OCCURENCES, "Number of 6 byte accesses.");
|
|---|
| 371 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[6], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size07", STAMUNIT_OCCURENCES, "Number of 7 byte accesses.");
|
|---|
| 372 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[7], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size08", STAMUNIT_OCCURENCES, "Number of 8 byte accesses.");
|
|---|
| 373 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[8], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size09", STAMUNIT_OCCURENCES, "Number of 9 byte accesses.");
|
|---|
| 374 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[9], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0a", STAMUNIT_OCCURENCES, "Number of 10 byte accesses.");
|
|---|
| 375 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[10], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0b", STAMUNIT_OCCURENCES, "Number of 11 byte accesses.");
|
|---|
| 376 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[11], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0c", STAMUNIT_OCCURENCES, "Number of 12 byte accesses.");
|
|---|
| 377 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[12], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0d", STAMUNIT_OCCURENCES, "Number of 13 byte accesses.");
|
|---|
| 378 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[13], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0e", STAMUNIT_OCCURENCES, "Number of 14 byte accesses.");
|
|---|
| 379 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[14], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0f", STAMUNIT_OCCURENCES, "Number of 15 byte accesses.");
|
|---|
| 380 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[15], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size10", STAMUNIT_OCCURENCES, "Number of 16 byte accesses.");
|
|---|
| 381 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[16], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size11-2f", STAMUNIT_OCCURENCES, "Number of 17-31 byte accesses.");
|
|---|
| 382 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[17], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size20-3f", STAMUNIT_OCCURENCES, "Number of 32-63 byte accesses.");
|
|---|
| 383 | STAM_REG(pVM, &pPool->aStatMonitorRZSizes[18], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size40+", STAMUNIT_OCCURENCES, "Number of 64+ byte accesses.");
|
|---|
| 384 | STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[0], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned1", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 1.");
|
|---|
| 385 | STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[1], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned2", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 2.");
|
|---|
| 386 | STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[2], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned3", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 3.");
|
|---|
| 387 | STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[3], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned4", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 4.");
|
|---|
| 388 | STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[4], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned5", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 5.");
|
|---|
| 389 | STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[5], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned6", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 6.");
|
|---|
| 390 | STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[6], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned7", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 7.");
|
|---|
| 391 |
|
|---|
| 392 | STAM_REG(pVM, &pPool->StatMonitorRZFaultPT, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/Fault/PT", STAMUNIT_OCCURENCES, "Nr of handled PT faults.");
|
|---|
| 393 | STAM_REG(pVM, &pPool->StatMonitorRZFaultPD, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/Fault/PD", STAMUNIT_OCCURENCES, "Nr of handled PD faults.");
|
|---|
| 394 | STAM_REG(pVM, &pPool->StatMonitorRZFaultPDPT, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/Fault/PDPT", STAMUNIT_OCCURENCES, "Nr of handled PDPT faults.");
|
|---|
| 395 | STAM_REG(pVM, &pPool->StatMonitorRZFaultPML4, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/Fault/PML4", STAMUNIT_OCCURENCES, "Nr of handled PML4 faults.");
|
|---|
| 396 |
|
|---|
| 397 | STAM_REG(pVM, &pPool->StatMonitorR3, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/R3", STAMUNIT_TICKS_PER_CALL, "Profiling the R3 access handler.");
|
|---|
| 398 | STAM_REG(pVM, &pPool->StatMonitorR3FlushPage, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/R3/FlushPage", STAMUNIT_TICKS_PER_CALL, "Profiling the pgmPoolFlushPage calls made from the R3 access handler.");
|
|---|
| 399 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[0], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size01", STAMUNIT_OCCURENCES, "Number of 1 byte accesses (R3).");
|
|---|
| 400 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[1], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size02", STAMUNIT_OCCURENCES, "Number of 2 byte accesses (R3).");
|
|---|
| 401 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[2], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size03", STAMUNIT_OCCURENCES, "Number of 3 byte accesses (R3).");
|
|---|
| 402 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[3], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size04", STAMUNIT_OCCURENCES, "Number of 4 byte accesses (R3).");
|
|---|
| 403 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[4], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size05", STAMUNIT_OCCURENCES, "Number of 5 byte accesses (R3).");
|
|---|
| 404 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[5], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size06", STAMUNIT_OCCURENCES, "Number of 6 byte accesses (R3).");
|
|---|
| 405 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[6], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size07", STAMUNIT_OCCURENCES, "Number of 7 byte accesses (R3).");
|
|---|
| 406 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[7], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size08", STAMUNIT_OCCURENCES, "Number of 8 byte accesses (R3).");
|
|---|
| 407 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[8], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size09", STAMUNIT_OCCURENCES, "Number of 9 byte accesses (R3).");
|
|---|
| 408 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[9], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0a", STAMUNIT_OCCURENCES, "Number of 10 byte accesses (R3).");
|
|---|
| 409 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[10], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0b", STAMUNIT_OCCURENCES, "Number of 11 byte accesses (R3).");
|
|---|
| 410 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[11], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0c", STAMUNIT_OCCURENCES, "Number of 12 byte accesses (R3).");
|
|---|
| 411 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[12], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0d", STAMUNIT_OCCURENCES, "Number of 13 byte accesses (R3).");
|
|---|
| 412 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[13], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0e", STAMUNIT_OCCURENCES, "Number of 14 byte accesses (R3).");
|
|---|
| 413 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[14], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0f", STAMUNIT_OCCURENCES, "Number of 15 byte accesses (R3).");
|
|---|
| 414 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[15], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size10", STAMUNIT_OCCURENCES, "Number of 16 byte accesses (R3).");
|
|---|
| 415 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[16], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size11-2f", STAMUNIT_OCCURENCES, "Number of 17-31 byte accesses.");
|
|---|
| 416 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[17], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size20-3f", STAMUNIT_OCCURENCES, "Number of 32-63 byte accesses.");
|
|---|
| 417 | STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[18], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size40+", STAMUNIT_OCCURENCES, "Number of 64+ byte accesses.");
|
|---|
| 418 | STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[0], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned1", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 1 in R3.");
|
|---|
| 419 | STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[1], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned2", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 2 in R3.");
|
|---|
| 420 | STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[2], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned3", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 3 in R3.");
|
|---|
| 421 | STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[3], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned4", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 4 in R3.");
|
|---|
| 422 | STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[4], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned5", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 5 in R3.");
|
|---|
| 423 | STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[5], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned6", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 6 in R3.");
|
|---|
| 424 | STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[6], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned7", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 7 in R3.");
|
|---|
| 425 |
|
|---|
| 426 | STAM_REG(pVM, &pPool->StatMonitorR3FaultPT, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Fault/PT", STAMUNIT_OCCURENCES, "Nr of handled PT faults.");
|
|---|
| 427 | STAM_REG(pVM, &pPool->StatMonitorR3FaultPD, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Fault/PD", STAMUNIT_OCCURENCES, "Nr of handled PD faults.");
|
|---|
| 428 | STAM_REG(pVM, &pPool->StatMonitorR3FaultPDPT, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Fault/PDPT", STAMUNIT_OCCURENCES, "Nr of handled PDPT faults.");
|
|---|
| 429 | STAM_REG(pVM, &pPool->StatMonitorR3FaultPML4, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Fault/PML4", STAMUNIT_OCCURENCES, "Nr of handled PML4 faults.");
|
|---|
| 430 |
|
|---|
| 431 | STAM_REG(pVM, &pPool->cModifiedPages, STAMTYPE_U16, "/PGM/Pool/Monitor/cModifiedPages", STAMUNIT_PAGES, "The current cModifiedPages value.");
|
|---|
| 432 | STAM_REG(pVM, &pPool->cModifiedPagesHigh, STAMTYPE_U16_RESET, "/PGM/Pool/Monitor/cModifiedPagesHigh", STAMUNIT_PAGES, "The high watermark for cModifiedPages.");
|
|---|
| 433 | STAM_REG(pVM, &pPool->StatResetDirtyPages, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/Dirty/Resets", STAMUNIT_OCCURENCES, "Times we've called pgmPoolResetDirtyPages (and there were dirty page).");
|
|---|
| 434 | STAM_REG(pVM, &pPool->StatDirtyPage, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/Dirty/Pages", STAMUNIT_OCCURENCES, "Times we've called pgmPoolAddDirtyPage.");
|
|---|
| 435 | STAM_REG(pVM, &pPool->StatDirtyPageDupFlush, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/Dirty/FlushDup", STAMUNIT_OCCURENCES, "Times we've had to flush duplicates for dirty page management.");
|
|---|
| 436 | STAM_REG(pVM, &pPool->StatDirtyPageOverFlowFlush, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/Dirty/FlushOverflow",STAMUNIT_OCCURENCES, "Times we've had to flush because of overflow.");
|
|---|
| 437 | STAM_REG(pVM, &pPool->StatCacheHits, STAMTYPE_COUNTER, "/PGM/Pool/Cache/Hits", STAMUNIT_OCCURENCES, "The number of pgmPoolAlloc calls satisfied by the cache.");
|
|---|
| 438 | STAM_REG(pVM, &pPool->StatCacheMisses, STAMTYPE_COUNTER, "/PGM/Pool/Cache/Misses", STAMUNIT_OCCURENCES, "The number of pgmPoolAlloc calls not statisfied by the cache.");
|
|---|
| 439 | STAM_REG(pVM, &pPool->StatCacheKindMismatches, STAMTYPE_COUNTER, "/PGM/Pool/Cache/KindMismatches", STAMUNIT_OCCURENCES, "The number of shadow page kind mismatches. (Better be low, preferably 0!)");
|
|---|
| 440 | STAM_REG(pVM, &pPool->StatCacheFreeUpOne, STAMTYPE_COUNTER, "/PGM/Pool/Cache/FreeUpOne", STAMUNIT_OCCURENCES, "The number of times the cache was asked to free up a page.");
|
|---|
| 441 | STAM_REG(pVM, &pPool->StatCacheCacheable, STAMTYPE_COUNTER, "/PGM/Pool/Cache/Cacheable", STAMUNIT_OCCURENCES, "The number of cacheable allocations.");
|
|---|
| 442 | STAM_REG(pVM, &pPool->StatCacheUncacheable, STAMTYPE_COUNTER, "/PGM/Pool/Cache/Uncacheable", STAMUNIT_OCCURENCES, "The number of uncacheable allocations.");
|
|---|
| 443 | #endif /* VBOX_WITH_STATISTICS */
|
|---|
| 444 |
|
|---|
| 445 | #ifdef VBOX_WITH_DEBUGGER
|
|---|
| 446 | /*
|
|---|
| 447 | * Debugger commands.
|
|---|
| 448 | */
|
|---|
| 449 | static bool s_fRegisteredCmds = false;
|
|---|
| 450 | if (!s_fRegisteredCmds)
|
|---|
| 451 | {
|
|---|
| 452 | rc = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds));
|
|---|
| 453 | if (RT_SUCCESS(rc))
|
|---|
| 454 | s_fRegisteredCmds = true;
|
|---|
| 455 | }
|
|---|
| 456 | #endif
|
|---|
| 457 |
|
|---|
| 458 | return VINF_SUCCESS;
|
|---|
| 459 | }
|
|---|
| 460 |
|
|---|
| 461 |
|
|---|
| 462 | /**
|
|---|
| 463 | * Relocate the page pool data.
|
|---|
| 464 | *
|
|---|
| 465 | * @param pVM The cross context VM structure.
|
|---|
| 466 | */
|
|---|
| 467 | void pgmR3PoolRelocate(PVM pVM)
|
|---|
| 468 | {
|
|---|
| 469 | RT_NOREF(pVM);
|
|---|
| 470 | }
|
|---|
| 471 |
|
|---|
| 472 |
|
|---|
| 473 | /**
|
|---|
| 474 | * Grows the shadow page pool.
|
|---|
| 475 | *
|
|---|
| 476 | * I.e. adds more pages to it, assuming that hasn't reached cMaxPages yet.
|
|---|
| 477 | *
|
|---|
| 478 | * @returns VBox status code.
|
|---|
| 479 | * @param pVM The cross context VM structure.
|
|---|
| 480 | * @param pVCpu The cross context virtual CPU structure of the calling EMT.
|
|---|
| 481 | */
|
|---|
| 482 | VMMR3_INT_DECL(int) PGMR3PoolGrow(PVM pVM, PVMCPU pVCpu)
|
|---|
| 483 | {
|
|---|
| 484 | /* This used to do a lot of stuff, but it has moved to ring-0 (PGMR0PoolGrow). */
|
|---|
| 485 | AssertReturn(pVM->pgm.s.pPoolR3->cCurPages < pVM->pgm.s.pPoolR3->cMaxPages, VERR_PGM_POOL_MAXED_OUT_ALREADY);
|
|---|
| 486 | int rc = VMMR3CallR0Emt(pVM, pVCpu, VMMR0_DO_PGM_POOL_GROW, 0, NULL);
|
|---|
| 487 | if (rc == VINF_SUCCESS)
|
|---|
| 488 | return rc;
|
|---|
| 489 | LogRel(("PGMR3PoolGrow: rc=%Rrc cCurPages=%#x cMaxPages=%#x\n",
|
|---|
| 490 | rc, pVM->pgm.s.pPoolR3->cCurPages, pVM->pgm.s.pPoolR3->cMaxPages));
|
|---|
| 491 | if (pVM->pgm.s.pPoolR3->cCurPages > 128 && RT_FAILURE_NP(rc))
|
|---|
| 492 | return -rc;
|
|---|
| 493 | return rc;
|
|---|
| 494 | }
|
|---|
| 495 |
|
|---|
| 496 |
|
|---|
| 497 | /**
|
|---|
| 498 | * Rendezvous callback used by pgmR3PoolClearAll that clears all shadow pages
|
|---|
| 499 | * and all modification counters.
|
|---|
| 500 | *
|
|---|
| 501 | * This is only called on one of the EMTs while the other ones are waiting for
|
|---|
| 502 | * it to complete this function.
|
|---|
| 503 | *
|
|---|
| 504 | * @returns VINF_SUCCESS (VBox strict status code).
|
|---|
| 505 | * @param pVM The cross context VM structure.
|
|---|
| 506 | * @param pVCpu The cross context virtual CPU structure of the calling EMT. Unused.
|
|---|
| 507 | * @param fpvFlushRemTlb When not NULL, we'll flush the REM TLB as well.
|
|---|
| 508 | * (This is the pvUser, so it has to be void *.)
|
|---|
| 509 | *
|
|---|
| 510 | */
|
|---|
| 511 | DECLCALLBACK(VBOXSTRICTRC) pgmR3PoolClearAllRendezvous(PVM pVM, PVMCPU pVCpu, void *fpvFlushRemTlb)
|
|---|
| 512 | {
|
|---|
| 513 | PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
|
|---|
| 514 | STAM_PROFILE_START(&pPool->StatClearAll, c);
|
|---|
| 515 | NOREF(pVCpu);
|
|---|
| 516 |
|
|---|
| 517 | PGM_LOCK_VOID(pVM);
|
|---|
| 518 | Log(("pgmR3PoolClearAllRendezvous: cUsedPages=%d fpvFlushRemTlb=%RTbool\n", pPool->cUsedPages, !!fpvFlushRemTlb));
|
|---|
| 519 |
|
|---|
| 520 | /*
|
|---|
| 521 | * Iterate all the pages until we've encountered all that are in use.
|
|---|
| 522 | * This is a simple but not quite optimal solution.
|
|---|
| 523 | */
|
|---|
| 524 | unsigned cModifiedPages = 0; NOREF(cModifiedPages);
|
|---|
| 525 | unsigned cLeft = pPool->cUsedPages;
|
|---|
| 526 | uint32_t iPage = pPool->cCurPages;
|
|---|
| 527 | while (--iPage >= PGMPOOL_IDX_FIRST)
|
|---|
| 528 | {
|
|---|
| 529 | PPGMPOOLPAGE pPage = &pPool->aPages[iPage];
|
|---|
| 530 | if (pPage->GCPhys != NIL_RTGCPHYS)
|
|---|
| 531 | {
|
|---|
| 532 | switch (pPage->enmKind)
|
|---|
| 533 | {
|
|---|
| 534 | /*
|
|---|
| 535 | * We only care about shadow page tables that reference physical memory
|
|---|
| 536 | */
|
|---|
| 537 | #ifdef PGM_WITH_LARGE_PAGES
|
|---|
| 538 | case PGMPOOLKIND_PAE_PD_PHYS: /* Large pages reference 2 MB of physical memory, so we must clear them. */
|
|---|
| 539 | if (pPage->cPresent)
|
|---|
| 540 | {
|
|---|
| 541 | PX86PDPAE pShwPD = (PX86PDPAE)PGMPOOL_PAGE_2_PTR_V2(pPool->CTX_SUFF(pVM), pVCpu, pPage);
|
|---|
| 542 | for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
|
|---|
| 543 | {
|
|---|
| 544 | //Assert((pShwPD->a[i].u & UINT64_C(0xfff0000000000f80)) == 0); - bogus, includes X86_PDE_PS.
|
|---|
| 545 | if ((pShwPD->a[i].u & (X86_PDE_P | X86_PDE_PS)) == (X86_PDE_P | X86_PDE_PS))
|
|---|
| 546 | {
|
|---|
| 547 | pShwPD->a[i].u = 0;
|
|---|
| 548 | Assert(pPage->cPresent);
|
|---|
| 549 | pPage->cPresent--;
|
|---|
| 550 | }
|
|---|
| 551 | }
|
|---|
| 552 | if (pPage->cPresent == 0)
|
|---|
| 553 | pPage->iFirstPresent = NIL_PGMPOOL_PRESENT_INDEX;
|
|---|
| 554 | }
|
|---|
| 555 | goto default_case;
|
|---|
| 556 |
|
|---|
| 557 | case PGMPOOLKIND_EPT_PD_FOR_PHYS: /* Large pages reference 2 MB of physical memory, so we must clear them. */
|
|---|
| 558 | if (pPage->cPresent)
|
|---|
| 559 | {
|
|---|
| 560 | PEPTPD pShwPD = (PEPTPD)PGMPOOL_PAGE_2_PTR_V2(pPool->CTX_SUFF(pVM), pVCpu, pPage);
|
|---|
| 561 | for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
|
|---|
| 562 | {
|
|---|
| 563 | if ((pShwPD->a[i].u & (EPT_E_READ | EPT_E_LEAF)) == (EPT_E_READ | EPT_E_LEAF))
|
|---|
| 564 | {
|
|---|
| 565 | pShwPD->a[i].u = 0;
|
|---|
| 566 | Assert(pPage->cPresent);
|
|---|
| 567 | pPage->cPresent--;
|
|---|
| 568 | }
|
|---|
| 569 | }
|
|---|
| 570 | if (pPage->cPresent == 0)
|
|---|
| 571 | pPage->iFirstPresent = NIL_PGMPOOL_PRESENT_INDEX;
|
|---|
| 572 | }
|
|---|
| 573 | goto default_case;
|
|---|
| 574 | #endif /* PGM_WITH_LARGE_PAGES */
|
|---|
| 575 |
|
|---|
| 576 | case PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT:
|
|---|
| 577 | case PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB:
|
|---|
| 578 | case PGMPOOLKIND_PAE_PT_FOR_32BIT_PT:
|
|---|
| 579 | case PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB:
|
|---|
| 580 | case PGMPOOLKIND_PAE_PT_FOR_PAE_PT:
|
|---|
| 581 | case PGMPOOLKIND_PAE_PT_FOR_PAE_2MB:
|
|---|
| 582 | case PGMPOOLKIND_32BIT_PT_FOR_PHYS:
|
|---|
| 583 | case PGMPOOLKIND_PAE_PT_FOR_PHYS:
|
|---|
| 584 | case PGMPOOLKIND_EPT_PT_FOR_PHYS:
|
|---|
| 585 | {
|
|---|
| 586 | if (pPage->cPresent)
|
|---|
| 587 | {
|
|---|
| 588 | void *pvShw = PGMPOOL_PAGE_2_PTR_V2(pPool->CTX_SUFF(pVM), pVCpu, pPage);
|
|---|
| 589 | STAM_PROFILE_START(&pPool->StatZeroPage, z);
|
|---|
| 590 | #if 0
|
|---|
| 591 | /* Useful check for leaking references; *very* expensive though. */
|
|---|
| 592 | switch (pPage->enmKind)
|
|---|
| 593 | {
|
|---|
| 594 | case PGMPOOLKIND_PAE_PT_FOR_32BIT_PT:
|
|---|
| 595 | case PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB:
|
|---|
| 596 | case PGMPOOLKIND_PAE_PT_FOR_PAE_PT:
|
|---|
| 597 | case PGMPOOLKIND_PAE_PT_FOR_PAE_2MB:
|
|---|
| 598 | case PGMPOOLKIND_PAE_PT_FOR_PHYS:
|
|---|
| 599 | {
|
|---|
| 600 | bool fFoundFirst = false;
|
|---|
| 601 | PPGMSHWPTPAE pPT = (PPGMSHWPTPAE)pvShw;
|
|---|
| 602 | for (unsigned ptIndex = 0; ptIndex < RT_ELEMENTS(pPT->a); ptIndex++)
|
|---|
| 603 | {
|
|---|
| 604 | if (pPT->a[ptIndex].u)
|
|---|
| 605 | {
|
|---|
| 606 | if (!fFoundFirst)
|
|---|
| 607 | {
|
|---|
| 608 | AssertFatalMsg(pPage->iFirstPresent <= ptIndex, ("ptIndex = %d first present = %d\n", ptIndex, pPage->iFirstPresent));
|
|---|
| 609 | if (pPage->iFirstPresent != ptIndex)
|
|---|
| 610 | Log(("ptIndex = %d first present = %d\n", ptIndex, pPage->iFirstPresent));
|
|---|
| 611 | fFoundFirst = true;
|
|---|
| 612 | }
|
|---|
| 613 | if (PGMSHWPTEPAE_IS_P(pPT->a[ptIndex]))
|
|---|
| 614 | {
|
|---|
| 615 | pgmPoolTracDerefGCPhysHint(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pPT->a[ptIndex]), NIL_RTGCPHYS);
|
|---|
| 616 | if (pPage->iFirstPresent == ptIndex)
|
|---|
| 617 | pPage->iFirstPresent = NIL_PGMPOOL_PRESENT_INDEX;
|
|---|
| 618 | }
|
|---|
| 619 | }
|
|---|
| 620 | }
|
|---|
| 621 | AssertFatalMsg(pPage->cPresent == 0, ("cPresent = %d pPage = %RGv\n", pPage->cPresent, pPage->GCPhys));
|
|---|
| 622 | break;
|
|---|
| 623 | }
|
|---|
| 624 | default:
|
|---|
| 625 | break;
|
|---|
| 626 | }
|
|---|
| 627 | #endif
|
|---|
| 628 | ASMMemZeroPage(pvShw);
|
|---|
| 629 | STAM_PROFILE_STOP(&pPool->StatZeroPage, z);
|
|---|
| 630 | pPage->cPresent = 0;
|
|---|
| 631 | pPage->iFirstPresent = NIL_PGMPOOL_PRESENT_INDEX;
|
|---|
| 632 | }
|
|---|
| 633 | }
|
|---|
| 634 | RT_FALL_THRU();
|
|---|
| 635 | default:
|
|---|
| 636 | #ifdef PGM_WITH_LARGE_PAGES
|
|---|
| 637 | default_case:
|
|---|
| 638 | #endif
|
|---|
| 639 | Assert(!pPage->cModifications || ++cModifiedPages);
|
|---|
| 640 | Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX || pPage->cModifications);
|
|---|
| 641 | Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX || pPage->cModifications);
|
|---|
| 642 | pPage->iModifiedNext = NIL_PGMPOOL_IDX;
|
|---|
| 643 | pPage->iModifiedPrev = NIL_PGMPOOL_IDX;
|
|---|
| 644 | pPage->cModifications = 0;
|
|---|
| 645 | break;
|
|---|
| 646 |
|
|---|
| 647 | }
|
|---|
| 648 | if (!--cLeft)
|
|---|
| 649 | break;
|
|---|
| 650 | }
|
|---|
| 651 | }
|
|---|
| 652 |
|
|---|
| 653 | #ifndef DEBUG_michael
|
|---|
| 654 | AssertMsg(cModifiedPages == pPool->cModifiedPages, ("%d != %d\n", cModifiedPages, pPool->cModifiedPages));
|
|---|
| 655 | #endif
|
|---|
| 656 | pPool->iModifiedHead = NIL_PGMPOOL_IDX;
|
|---|
| 657 | pPool->cModifiedPages = 0;
|
|---|
| 658 |
|
|---|
| 659 | /*
|
|---|
| 660 | * Clear all the GCPhys links and rebuild the phys ext free list.
|
|---|
| 661 | */
|
|---|
| 662 | for (PPGMRAMRANGE pRam = pPool->CTX_SUFF(pVM)->pgm.s.CTX_SUFF(pRamRangesX);
|
|---|
| 663 | pRam;
|
|---|
| 664 | pRam = pRam->CTX_SUFF(pNext))
|
|---|
| 665 | {
|
|---|
| 666 | iPage = pRam->cb >> GUEST_PAGE_SHIFT;
|
|---|
| 667 | while (iPage-- > 0)
|
|---|
| 668 | PGM_PAGE_SET_TRACKING(pVM, &pRam->aPages[iPage], 0);
|
|---|
| 669 | }
|
|---|
| 670 |
|
|---|
| 671 | pPool->iPhysExtFreeHead = 0;
|
|---|
| 672 | PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
|
|---|
| 673 | const unsigned cMaxPhysExts = pPool->cMaxPhysExts;
|
|---|
| 674 | for (unsigned i = 0; i < cMaxPhysExts; i++)
|
|---|
| 675 | {
|
|---|
| 676 | paPhysExts[i].iNext = i + 1;
|
|---|
| 677 | paPhysExts[i].aidx[0] = NIL_PGMPOOL_IDX;
|
|---|
| 678 | paPhysExts[i].apte[0] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
|
|---|
| 679 | paPhysExts[i].aidx[1] = NIL_PGMPOOL_IDX;
|
|---|
| 680 | paPhysExts[i].apte[1] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
|
|---|
| 681 | paPhysExts[i].aidx[2] = NIL_PGMPOOL_IDX;
|
|---|
| 682 | paPhysExts[i].apte[2] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
|
|---|
| 683 | }
|
|---|
| 684 | paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
|
|---|
| 685 |
|
|---|
| 686 |
|
|---|
| 687 | #ifdef PGMPOOL_WITH_OPTIMIZED_DIRTY_PT
|
|---|
| 688 | /* Reset all dirty pages to reactivate the page monitoring. */
|
|---|
| 689 | /* Note: we must do this *after* clearing all page references and shadow page tables as there might be stale references to
|
|---|
| 690 | * recently removed MMIO ranges around that might otherwise end up asserting in pgmPoolTracDerefGCPhysHint
|
|---|
| 691 | */
|
|---|
| 692 | for (unsigned i = 0; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
|
|---|
| 693 | {
|
|---|
| 694 | unsigned idxPage = pPool->aidxDirtyPages[i];
|
|---|
| 695 | if (idxPage == NIL_PGMPOOL_IDX)
|
|---|
| 696 | continue;
|
|---|
| 697 |
|
|---|
| 698 | PPGMPOOLPAGE pPage = &pPool->aPages[idxPage];
|
|---|
| 699 | Assert(pPage->idx == idxPage);
|
|---|
| 700 | Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX && pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
|
|---|
| 701 |
|
|---|
| 702 | AssertMsg(pPage->fDirty, ("Page %RGp (slot=%d) not marked dirty!", pPage->GCPhys, i));
|
|---|
| 703 |
|
|---|
| 704 | Log(("Reactivate dirty page %RGp\n", pPage->GCPhys));
|
|---|
| 705 |
|
|---|
| 706 | /* First write protect the page again to catch all write accesses. (before checking for changes -> SMP) */
|
|---|
| 707 | int rc = PGMHandlerPhysicalReset(pVM, pPage->GCPhys & PAGE_BASE_GC_MASK);
|
|---|
| 708 | AssertRCSuccess(rc);
|
|---|
| 709 | pPage->fDirty = false;
|
|---|
| 710 |
|
|---|
| 711 | pPool->aidxDirtyPages[i] = NIL_PGMPOOL_IDX;
|
|---|
| 712 | }
|
|---|
| 713 |
|
|---|
| 714 | /* Clear all dirty pages. */
|
|---|
| 715 | pPool->idxFreeDirtyPage = 0;
|
|---|
| 716 | pPool->cDirtyPages = 0;
|
|---|
| 717 | #endif
|
|---|
| 718 |
|
|---|
| 719 | /* Clear the PGM_SYNC_CLEAR_PGM_POOL flag on all VCPUs to prevent redundant flushes. */
|
|---|
| 720 | for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
|
|---|
| 721 | pVM->apCpusR3[idCpu]->pgm.s.fSyncFlags &= ~PGM_SYNC_CLEAR_PGM_POOL;
|
|---|
| 722 |
|
|---|
| 723 | /* Flush job finished. */
|
|---|
| 724 | VM_FF_CLEAR(pVM, VM_FF_PGM_POOL_FLUSH_PENDING);
|
|---|
| 725 | pPool->cPresent = 0;
|
|---|
| 726 | PGM_UNLOCK(pVM);
|
|---|
| 727 |
|
|---|
| 728 | PGM_INVL_ALL_VCPU_TLBS(pVM);
|
|---|
| 729 |
|
|---|
| 730 | if (fpvFlushRemTlb)
|
|---|
| 731 | for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
|
|---|
| 732 | CPUMSetChangedFlags(pVM->apCpusR3[idCpu], CPUM_CHANGED_GLOBAL_TLB_FLUSH);
|
|---|
| 733 |
|
|---|
| 734 | STAM_PROFILE_STOP(&pPool->StatClearAll, c);
|
|---|
| 735 | return VINF_SUCCESS;
|
|---|
| 736 | }
|
|---|
| 737 |
|
|---|
| 738 |
|
|---|
| 739 | /**
|
|---|
| 740 | * Clears the shadow page pool.
|
|---|
| 741 | *
|
|---|
| 742 | * @param pVM The cross context VM structure.
|
|---|
| 743 | * @param fFlushRemTlb When set, the REM TLB is scheduled for flushing as
|
|---|
| 744 | * well.
|
|---|
| 745 | */
|
|---|
| 746 | void pgmR3PoolClearAll(PVM pVM, bool fFlushRemTlb)
|
|---|
| 747 | {
|
|---|
| 748 | int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, pgmR3PoolClearAllRendezvous, &fFlushRemTlb);
|
|---|
| 749 | AssertRC(rc);
|
|---|
| 750 | }
|
|---|
| 751 |
|
|---|
| 752 |
|
|---|
| 753 | /**
|
|---|
| 754 | * Protect all pgm pool page table entries to monitor writes
|
|---|
| 755 | *
|
|---|
| 756 | * @param pVM The cross context VM structure.
|
|---|
| 757 | *
|
|---|
| 758 | * @remarks ASSUMES the caller will flush all TLBs!!
|
|---|
| 759 | */
|
|---|
| 760 | void pgmR3PoolWriteProtectPages(PVM pVM)
|
|---|
| 761 | {
|
|---|
| 762 | PGM_LOCK_ASSERT_OWNER(pVM);
|
|---|
| 763 | PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
|
|---|
| 764 | unsigned cLeft = pPool->cUsedPages;
|
|---|
| 765 | unsigned iPage = pPool->cCurPages;
|
|---|
| 766 | while (--iPage >= PGMPOOL_IDX_FIRST)
|
|---|
| 767 | {
|
|---|
| 768 | PPGMPOOLPAGE pPage = &pPool->aPages[iPage];
|
|---|
| 769 | if ( pPage->GCPhys != NIL_RTGCPHYS
|
|---|
| 770 | && pPage->cPresent)
|
|---|
| 771 | {
|
|---|
| 772 | union
|
|---|
| 773 | {
|
|---|
| 774 | void *pv;
|
|---|
| 775 | PX86PT pPT;
|
|---|
| 776 | PPGMSHWPTPAE pPTPae;
|
|---|
| 777 | PEPTPT pPTEpt;
|
|---|
| 778 | } uShw;
|
|---|
| 779 | uShw.pv = PGMPOOL_PAGE_2_PTR(pVM, pPage);
|
|---|
| 780 |
|
|---|
| 781 | switch (pPage->enmKind)
|
|---|
| 782 | {
|
|---|
| 783 | /*
|
|---|
| 784 | * We only care about shadow page tables.
|
|---|
| 785 | */
|
|---|
| 786 | case PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT:
|
|---|
| 787 | case PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB:
|
|---|
| 788 | case PGMPOOLKIND_32BIT_PT_FOR_PHYS:
|
|---|
| 789 | for (unsigned iShw = 0; iShw < RT_ELEMENTS(uShw.pPT->a); iShw++)
|
|---|
| 790 | if (uShw.pPT->a[iShw].u & X86_PTE_P)
|
|---|
| 791 | uShw.pPT->a[iShw].u = ~(X86PGUINT)X86_PTE_RW;
|
|---|
| 792 | break;
|
|---|
| 793 |
|
|---|
| 794 | case PGMPOOLKIND_PAE_PT_FOR_32BIT_PT:
|
|---|
| 795 | case PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB:
|
|---|
| 796 | case PGMPOOLKIND_PAE_PT_FOR_PAE_PT:
|
|---|
| 797 | case PGMPOOLKIND_PAE_PT_FOR_PAE_2MB:
|
|---|
| 798 | case PGMPOOLKIND_PAE_PT_FOR_PHYS:
|
|---|
| 799 | for (unsigned iShw = 0; iShw < RT_ELEMENTS(uShw.pPTPae->a); iShw++)
|
|---|
| 800 | if (PGMSHWPTEPAE_IS_P(uShw.pPTPae->a[iShw]))
|
|---|
| 801 | PGMSHWPTEPAE_SET_RO(uShw.pPTPae->a[iShw]);
|
|---|
| 802 | break;
|
|---|
| 803 |
|
|---|
| 804 | case PGMPOOLKIND_EPT_PT_FOR_PHYS:
|
|---|
| 805 | for (unsigned iShw = 0; iShw < RT_ELEMENTS(uShw.pPTEpt->a); iShw++)
|
|---|
| 806 | if (uShw.pPTEpt->a[iShw].u & EPT_E_READ)
|
|---|
| 807 | uShw.pPTEpt->a[iShw].u &= ~(X86PGPAEUINT)EPT_E_WRITE;
|
|---|
| 808 | break;
|
|---|
| 809 |
|
|---|
| 810 | default:
|
|---|
| 811 | break;
|
|---|
| 812 | }
|
|---|
| 813 | if (!--cLeft)
|
|---|
| 814 | break;
|
|---|
| 815 | }
|
|---|
| 816 | }
|
|---|
| 817 | }
|
|---|
| 818 |
|
|---|
| 819 | #ifdef VBOX_WITH_DEBUGGER
|
|---|
| 820 | /**
|
|---|
| 821 | * @callback_method_impl{FNDBGCCMD, The '.pgmpoolcheck' command.}
|
|---|
| 822 | */
|
|---|
| 823 | static DECLCALLBACK(int) pgmR3PoolCmdCheck(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
|
|---|
| 824 | {
|
|---|
| 825 | DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
|
|---|
| 826 | PVM pVM = pUVM->pVM;
|
|---|
| 827 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
|---|
| 828 | DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, -1, cArgs == 0);
|
|---|
| 829 | uint32_t cErrors = 0;
|
|---|
| 830 | NOREF(paArgs);
|
|---|
| 831 |
|
|---|
| 832 | PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
|
|---|
| 833 | for (unsigned i = 0; i < pPool->cCurPages; i++)
|
|---|
| 834 | {
|
|---|
| 835 | PPGMPOOLPAGE pPage = &pPool->aPages[i];
|
|---|
| 836 | bool fFirstMsg = true;
|
|---|
| 837 |
|
|---|
| 838 | /** @todo cover other paging modes too. */
|
|---|
| 839 | if (pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT)
|
|---|
| 840 | {
|
|---|
| 841 | PPGMSHWPTPAE pShwPT = (PPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
|
|---|
| 842 | {
|
|---|
| 843 | PX86PTPAE pGstPT;
|
|---|
| 844 | PGMPAGEMAPLOCK LockPage;
|
|---|
| 845 | int rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, pPage->GCPhys, (const void **)&pGstPT, &LockPage); AssertReleaseRC(rc);
|
|---|
| 846 |
|
|---|
| 847 | /* Check if any PTEs are out of sync. */
|
|---|
| 848 | for (unsigned j = 0; j < RT_ELEMENTS(pShwPT->a); j++)
|
|---|
| 849 | {
|
|---|
| 850 | if (PGMSHWPTEPAE_IS_P(pShwPT->a[j]))
|
|---|
| 851 | {
|
|---|
| 852 | RTHCPHYS HCPhys = NIL_RTHCPHYS;
|
|---|
| 853 | rc = PGMPhysGCPhys2HCPhys(pPool->CTX_SUFF(pVM), pGstPT->a[j].u & X86_PTE_PAE_PG_MASK, &HCPhys);
|
|---|
| 854 | if ( rc != VINF_SUCCESS
|
|---|
| 855 | || PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[j]) != HCPhys)
|
|---|
| 856 | {
|
|---|
| 857 | if (fFirstMsg)
|
|---|
| 858 | {
|
|---|
| 859 | DBGCCmdHlpPrintf(pCmdHlp, "Check pool page %RGp\n", pPage->GCPhys);
|
|---|
| 860 | fFirstMsg = false;
|
|---|
| 861 | }
|
|---|
| 862 | DBGCCmdHlpPrintf(pCmdHlp, "Mismatch HCPhys: rc=%Rrc idx=%d guest %RX64 shw=%RX64 vs %RHp\n", rc, j, pGstPT->a[j].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[j]), HCPhys);
|
|---|
| 863 | cErrors++;
|
|---|
| 864 | }
|
|---|
| 865 | else if ( PGMSHWPTEPAE_IS_RW(pShwPT->a[j])
|
|---|
| 866 | && !(pGstPT->a[j].u & X86_PTE_RW))
|
|---|
| 867 | {
|
|---|
| 868 | if (fFirstMsg)
|
|---|
| 869 | {
|
|---|
| 870 | DBGCCmdHlpPrintf(pCmdHlp, "Check pool page %RGp\n", pPage->GCPhys);
|
|---|
| 871 | fFirstMsg = false;
|
|---|
| 872 | }
|
|---|
| 873 | DBGCCmdHlpPrintf(pCmdHlp, "Mismatch r/w gst/shw: idx=%d guest %RX64 shw=%RX64 vs %RHp\n", j, pGstPT->a[j].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[j]), HCPhys);
|
|---|
| 874 | cErrors++;
|
|---|
| 875 | }
|
|---|
| 876 | }
|
|---|
| 877 | }
|
|---|
| 878 | PGMPhysReleasePageMappingLock(pVM, &LockPage);
|
|---|
| 879 | }
|
|---|
| 880 |
|
|---|
| 881 | /* Make sure this page table can't be written to from any shadow mapping. */
|
|---|
| 882 | RTHCPHYS HCPhysPT = NIL_RTHCPHYS;
|
|---|
| 883 | int rc = PGMPhysGCPhys2HCPhys(pPool->CTX_SUFF(pVM), pPage->GCPhys, &HCPhysPT);
|
|---|
| 884 | AssertMsgRC(rc, ("PGMPhysGCPhys2HCPhys failed with rc=%d for %RGp\n", rc, pPage->GCPhys));
|
|---|
| 885 | if (rc == VINF_SUCCESS)
|
|---|
| 886 | {
|
|---|
| 887 | for (unsigned j = 0; j < pPool->cCurPages; j++)
|
|---|
| 888 | {
|
|---|
| 889 | PPGMPOOLPAGE pTempPage = &pPool->aPages[j];
|
|---|
| 890 |
|
|---|
| 891 | if (pTempPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT)
|
|---|
| 892 | {
|
|---|
| 893 | PPGMSHWPTPAE pShwPT2 = (PPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pTempPage);
|
|---|
| 894 |
|
|---|
| 895 | for (unsigned k = 0; k < RT_ELEMENTS(pShwPT->a); k++)
|
|---|
| 896 | {
|
|---|
| 897 | if ( PGMSHWPTEPAE_IS_P_RW(pShwPT2->a[k])
|
|---|
| 898 | # ifdef PGMPOOL_WITH_OPTIMIZED_DIRTY_PT
|
|---|
| 899 | && !pPage->fDirty
|
|---|
| 900 | # endif
|
|---|
| 901 | && PGMSHWPTEPAE_GET_HCPHYS(pShwPT2->a[k]) == HCPhysPT)
|
|---|
| 902 | {
|
|---|
| 903 | if (fFirstMsg)
|
|---|
| 904 | {
|
|---|
| 905 | DBGCCmdHlpPrintf(pCmdHlp, "Check pool page %RGp\n", pPage->GCPhys);
|
|---|
| 906 | fFirstMsg = false;
|
|---|
| 907 | }
|
|---|
| 908 | DBGCCmdHlpPrintf(pCmdHlp, "Mismatch: r/w: GCPhys=%RGp idx=%d shw %RX64 %RX64\n", pTempPage->GCPhys, k, PGMSHWPTEPAE_GET_LOG(pShwPT->a[k]), PGMSHWPTEPAE_GET_LOG(pShwPT2->a[k]));
|
|---|
| 909 | cErrors++;
|
|---|
| 910 | }
|
|---|
| 911 | }
|
|---|
| 912 | }
|
|---|
| 913 | }
|
|---|
| 914 | }
|
|---|
| 915 | }
|
|---|
| 916 | }
|
|---|
| 917 | if (cErrors > 0)
|
|---|
| 918 | return DBGCCmdHlpFail(pCmdHlp, pCmd, "Found %#x errors", cErrors);
|
|---|
| 919 | return VINF_SUCCESS;
|
|---|
| 920 | }
|
|---|
| 921 | #endif /* VBOX_WITH_DEBUGGER */
|
|---|
