diff options
Diffstat (limited to 'src/VBox/VMM/VMMR3/PGMHandler.cpp')
| -rw-r--r-- | src/VBox/VMM/VMMR3/PGMHandler.cpp | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/src/VBox/VMM/VMMR3/PGMHandler.cpp b/src/VBox/VMM/VMMR3/PGMHandler.cpp new file mode 100644 index 00000000..1be93d91 --- /dev/null +++ b/src/VBox/VMM/VMMR3/PGMHandler.cpp @@ -0,0 +1,395 @@ +/* $Id: PGMHandler.cpp $ */ +/** @file + * PGM - Page Manager / Monitor, Access Handlers. + */ + +/* + * Copyright (C) 2006-2020 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_PGM +#include <VBox/vmm/dbgf.h> +#include <VBox/vmm/pgm.h> +#include <VBox/vmm/cpum.h> +#include <VBox/vmm/iom.h> +#include <VBox/sup.h> +#include <VBox/vmm/mm.h> +#include <VBox/vmm/em.h> +#include <VBox/vmm/stam.h> +#include <VBox/vmm/dbgf.h> +#include <VBox/vmm/selm.h> +#include <VBox/vmm/ssm.h> +#include "PGMInternal.h" +#include <VBox/vmm/vm.h> +#include "PGMInline.h" +#include <VBox/dbg.h> + +#include <VBox/log.h> +#include <iprt/assert.h> +#include <iprt/alloc.h> +#include <iprt/asm.h> +#include <iprt/errcore.h> +#include <iprt/thread.h> +#include <iprt/string.h> +#include <VBox/param.h> +#include <VBox/vmm/hm.h> + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ +static DECLCALLBACK(int) pgmR3HandlerPhysicalOneClear(PAVLROGCPHYSNODECORE pNode, void *pvUser); +static DECLCALLBACK(int) pgmR3HandlerPhysicalOneSet(PAVLROGCPHYSNODECORE pNode, void *pvUser); +static DECLCALLBACK(int) pgmR3InfoHandlersPhysicalOne(PAVLROGCPHYSNODECORE pNode, void *pvUser); + + + + +/** + * Register a physical page access handler type, extended version. + * + * @returns VBox status code. + * @param pVM The cross context VM structure. + * @param enmKind The kind of access handler. + * @param pfnHandlerR3 Pointer to the ring-3 handler callback. + * @param pfnHandlerR0 Pointer to the ring-0 handler callback. + * @param pfnPfHandlerR0 Pointer to the ring-0 \#PF handler callback. + * callback. + * @param pszDesc The type description. + * @param phType Where to return the type handle (cross context + * safe). + */ +VMMR3_INT_DECL(int) PGMR3HandlerPhysicalTypeRegisterEx(PVM pVM, PGMPHYSHANDLERKIND enmKind, + PFNPGMPHYSHANDLER pfnHandlerR3, + R0PTRTYPE(PFNPGMPHYSHANDLER) pfnHandlerR0, + R0PTRTYPE(PFNPGMRZPHYSPFHANDLER) pfnPfHandlerR0, + const char *pszDesc, PPGMPHYSHANDLERTYPE phType) +{ + AssertPtrReturn(pfnHandlerR3, VERR_INVALID_POINTER); + AssertReturn(pfnHandlerR0 != NIL_RTR0PTR, VERR_INVALID_POINTER); + AssertReturn(pfnPfHandlerR0 != NIL_RTR0PTR, VERR_INVALID_POINTER); + AssertPtrReturn(pszDesc, VERR_INVALID_POINTER); + AssertReturn( enmKind == PGMPHYSHANDLERKIND_WRITE + || enmKind == PGMPHYSHANDLERKIND_ALL + || enmKind == PGMPHYSHANDLERKIND_MMIO, + VERR_INVALID_PARAMETER); + + PPGMPHYSHANDLERTYPEINT pType; + int rc = MMHyperAlloc(pVM, sizeof(*pType), 0, MM_TAG_PGM_HANDLER_TYPES, (void **)&pType); + if (RT_SUCCESS(rc)) + { + pType->u32Magic = PGMPHYSHANDLERTYPEINT_MAGIC; + pType->cRefs = 1; + pType->enmKind = enmKind; + pType->uState = enmKind == PGMPHYSHANDLERKIND_WRITE + ? PGM_PAGE_HNDL_PHYS_STATE_WRITE : PGM_PAGE_HNDL_PHYS_STATE_ALL; + pType->pfnHandlerR3 = pfnHandlerR3; + pType->pfnHandlerR0 = pfnHandlerR0; + pType->pfnPfHandlerR0 = pfnPfHandlerR0; + pType->pszDesc = pszDesc; + + pgmLock(pVM); + RTListOff32Append(&pVM->pgm.s.CTX_SUFF(pTrees)->HeadPhysHandlerTypes, &pType->ListNode); + pgmUnlock(pVM); + + *phType = MMHyperHeapPtrToOffset(pVM, pType); + LogFlow(("PGMR3HandlerPhysicalTypeRegisterEx: %p/%#x: enmKind=%d pfnHandlerR3=%RHv pfnHandlerR0=%RHv pszDesc=%s\n", + pType, *phType, enmKind, pfnHandlerR3, pfnPfHandlerR0, pszDesc)); + return VINF_SUCCESS; + } + *phType = NIL_PGMPHYSHANDLERTYPE; + return rc; +} + + +/** + * Register a physical page access handler type. + * + * @returns VBox status code. + * @param pVM The cross context VM structure. + * @param enmKind The kind of access handler. + * @param pfnHandlerR3 Pointer to the ring-3 handler callback. + * @param pszModR0 The name of the ring-0 module, NULL is an alias for + * the main ring-0 module. + * @param pszHandlerR0 The name of the ring-0 handler, NULL if the ring-3 + * handler should be called. + * @param pszPfHandlerR0 The name of the ring-0 \#PF handler, NULL if the + * ring-3 handler should be called. + * @param pszModRC The name of the raw-mode context module, NULL is an + * alias for the main RC module. + * @param pszHandlerRC The name of the raw-mode context handler, NULL if + * the ring-3 handler should be called. + * @param pszPfHandlerRC The name of the raw-mode context \#PF handler, NULL + * if the ring-3 handler should be called. + * @param pszDesc The type description. + * @param phType Where to return the type handle (cross context + * safe). + */ +VMMR3DECL(int) PGMR3HandlerPhysicalTypeRegister(PVM pVM, PGMPHYSHANDLERKIND enmKind, + R3PTRTYPE(PFNPGMPHYSHANDLER) pfnHandlerR3, + const char *pszModR0, const char *pszHandlerR0, const char *pszPfHandlerR0, + const char *pszModRC, const char *pszHandlerRC, const char *pszPfHandlerRC, + const char *pszDesc, PPGMPHYSHANDLERTYPE phType) +{ + LogFlow(("PGMR3HandlerPhysicalTypeRegister: enmKind=%d pfnHandlerR3=%RHv pszModR0=%s pszHandlerR0=%s pszPfHandlerR0=%s pszModRC=%s pszHandlerRC=%s pszPfHandlerRC=%s pszDesc=%s\n", + enmKind, pfnHandlerR3, pszModR0, pszHandlerR0, pszPfHandlerR0, pszModRC, pszHandlerRC, pszPfHandlerRC, pszDesc)); + + /* + * Validate input. + */ + AssertPtrReturn(pfnHandlerR3, VERR_INVALID_POINTER); + AssertPtrNullReturn(pszModR0, VERR_INVALID_POINTER); + AssertPtrNullReturn(pszHandlerR0, VERR_INVALID_POINTER); + AssertPtrNullReturn(pszPfHandlerR0, VERR_INVALID_POINTER); + AssertPtrNullReturn(pszModRC, VERR_INVALID_POINTER); + AssertPtrNullReturn(pszHandlerRC, VERR_INVALID_POINTER); + AssertPtrNullReturn(pszPfHandlerRC, VERR_INVALID_POINTER); + + /* + * Resolve the R0 handlers. + */ + R0PTRTYPE(PFNPGMPHYSHANDLER) pfnHandlerR0 = NIL_RTR0PTR; + int rc = PDMR3LdrGetSymbolR0Lazy(pVM, pszHandlerR0 ? pszModR0 : NULL, NULL /*pszSearchPath*/, + pszHandlerR0 ? pszHandlerR0 : "pgmPhysHandlerRedirectToHC", &pfnHandlerR0); + if (RT_SUCCESS(rc)) + { + R0PTRTYPE(PFNPGMR0PHYSPFHANDLER) pfnPfHandlerR0 = NIL_RTR0PTR; + rc = PDMR3LdrGetSymbolR0Lazy(pVM, pszPfHandlerR0 ? pszModR0 : NULL, NULL /*pszSearchPath*/, + pszPfHandlerR0 ? pszPfHandlerR0 : "pgmPhysPfHandlerRedirectToHC", &pfnPfHandlerR0); + if (RT_SUCCESS(rc)) + { + /* + * Resolve the GC handler. + */ + RTRCPTR pfnHandlerRC = NIL_RTRCPTR; + RTRCPTR pfnPfHandlerRC = NIL_RTRCPTR; + if (VM_IS_RAW_MODE_ENABLED(pVM)) + { + rc = PDMR3LdrGetSymbolRCLazy(pVM, pszHandlerRC ? pszModRC : NULL, NULL /*pszSearchPath*/, + pszHandlerRC ? pszHandlerRC : "pgmPhysHandlerRedirectToHC", &pfnHandlerRC); + if (RT_SUCCESS(rc)) + { + rc = PDMR3LdrGetSymbolRCLazy(pVM, pszPfHandlerRC ? pszModRC : NULL, NULL /*pszSearchPath*/, + pszPfHandlerRC ? pszPfHandlerRC : "pgmPhysPfHandlerRedirectToHC", &pfnPfHandlerRC); + AssertMsgRC(rc, ("Failed to resolve %s.%s, rc=%Rrc.\n", pszPfHandlerRC ? pszModRC : VMMRC_MAIN_MODULE_NAME, + pszPfHandlerRC ? pszPfHandlerRC : "pgmPhysPfHandlerRedirectToHC", rc)); + } + else + AssertMsgFailed(("Failed to resolve %s.%s, rc=%Rrc.\n", pszHandlerRC ? pszModRC : VMMRC_MAIN_MODULE_NAME, + pszHandlerRC ? pszHandlerRC : "pgmPhysHandlerRedirectToHC", rc)); + + } + if (RT_SUCCESS(rc)) + return PGMR3HandlerPhysicalTypeRegisterEx(pVM, enmKind, pfnHandlerR3, + pfnHandlerR0, pfnPfHandlerR0, pszDesc, phType); + } + else + AssertMsgFailed(("Failed to resolve %s.%s, rc=%Rrc.\n", pszPfHandlerR0 ? pszModR0 : VMMR0_MAIN_MODULE_NAME, + pszPfHandlerR0 ? pszPfHandlerR0 : "pgmPhysHandlerRedirectToHC", rc)); + } + else + AssertMsgFailed(("Failed to resolve %s.%s, rc=%Rrc.\n", pszHandlerR0 ? pszModR0 : VMMR0_MAIN_MODULE_NAME, + pszHandlerR0 ? pszHandlerR0 : "pgmPhysHandlerRedirectToHC", rc)); + + return rc; +} + + +/** + * Updates the physical page access handlers. + * + * @param pVM The cross context VM structure. + * @remark Only used when restoring a saved state. + */ +void pgmR3HandlerPhysicalUpdateAll(PVM pVM) +{ + LogFlow(("pgmHandlerPhysicalUpdateAll:\n")); + + /* + * Clear and set. + * (the right -> left on the setting pass is just bird speculating on cache hits) + */ + pgmLock(pVM); + RTAvlroGCPhysDoWithAll(&pVM->pgm.s.CTX_SUFF(pTrees)->PhysHandlers, true, pgmR3HandlerPhysicalOneClear, pVM); + RTAvlroGCPhysDoWithAll(&pVM->pgm.s.CTX_SUFF(pTrees)->PhysHandlers, false, pgmR3HandlerPhysicalOneSet, pVM); + pgmUnlock(pVM); +} + + +/** + * Clears all the page level flags for one physical handler range. + * + * @returns 0 + * @param pNode Pointer to a PGMPHYSHANDLER. + * @param pvUser Pointer to the VM. + */ +static DECLCALLBACK(int) pgmR3HandlerPhysicalOneClear(PAVLROGCPHYSNODECORE pNode, void *pvUser) +{ + PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode; + PPGMRAMRANGE pRamHint = NULL; + RTGCPHYS GCPhys = pCur->Core.Key; + RTUINT cPages = pCur->cPages; + PVM pVM = (PVM)pvUser; + for (;;) + { + PPGMPAGE pPage; + int rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint); + if (RT_SUCCESS(rc)) + { + PGM_PAGE_SET_HNDL_PHYS_STATE(pPage, PGM_PAGE_HNDL_PHYS_STATE_NONE); + + /* Tell NEM about the protection change. */ + if (VM_IS_NEM_ENABLED(pVM)) + { + uint8_t u2State = PGM_PAGE_GET_NEM_STATE(pPage); + PGMPAGETYPE enmType = (PGMPAGETYPE)PGM_PAGE_GET_TYPE(pPage); + NEMHCNotifyPhysPageProtChanged(pVM, GCPhys, PGM_PAGE_GET_HCPHYS(pPage), + pgmPhysPageCalcNemProtection(pPage, enmType), enmType, &u2State); + PGM_PAGE_SET_NEM_STATE(pPage, u2State); + } + } + else + AssertRC(rc); + + if (--cPages == 0) + return 0; + GCPhys += PAGE_SIZE; + } +} + + +/** + * Sets all the page level flags for one physical handler range. + * + * @returns 0 + * @param pNode Pointer to a PGMPHYSHANDLER. + * @param pvUser Pointer to the VM. + */ +static DECLCALLBACK(int) pgmR3HandlerPhysicalOneSet(PAVLROGCPHYSNODECORE pNode, void *pvUser) +{ + PVM pVM = (PVM)pvUser; + PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode; + PPGMPHYSHANDLERTYPEINT pCurType = PGMPHYSHANDLER_GET_TYPE(pVM, pCur); + unsigned uState = pCurType->uState; + PPGMRAMRANGE pRamHint = NULL; + RTGCPHYS GCPhys = pCur->Core.Key; + RTUINT cPages = pCur->cPages; + for (;;) + { + PPGMPAGE pPage; + int rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint); + if (RT_SUCCESS(rc)) + { + PGM_PAGE_SET_HNDL_PHYS_STATE(pPage, uState); + + /* Tell NEM about the protection change. */ + if (VM_IS_NEM_ENABLED(pVM)) + { + uint8_t u2State = PGM_PAGE_GET_NEM_STATE(pPage); + PGMPAGETYPE enmType = (PGMPAGETYPE)PGM_PAGE_GET_TYPE(pPage); + NEMHCNotifyPhysPageProtChanged(pVM, GCPhys, PGM_PAGE_GET_HCPHYS(pPage), + pgmPhysPageCalcNemProtection(pPage, enmType), enmType, &u2State); + PGM_PAGE_SET_NEM_STATE(pPage, u2State); + } + } + else + AssertRC(rc); + + if (--cPages == 0) + return 0; + GCPhys += PAGE_SIZE; + } +} + + +/** + * Arguments for pgmR3InfoHandlersPhysicalOne and pgmR3InfoHandlersVirtualOne. + */ +typedef struct PGMHANDLERINFOARG +{ + /** The output helpers.*/ + PCDBGFINFOHLP pHlp; + /** Pointer to the cross context VM handle. */ + PVM pVM; + /** Set if statistics should be dumped. */ + bool fStats; +} PGMHANDLERINFOARG, *PPGMHANDLERINFOARG; + + +/** + * Info callback for 'pgmhandlers'. + * + * @param pVM The cross context VM structure. + * @param pHlp The output helpers. + * @param pszArgs The arguments. phys or virt. + */ +DECLCALLBACK(void) pgmR3InfoHandlers(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs) +{ + /* + * Parse options. + */ + PGMHANDLERINFOARG Args = { pHlp, pVM, /* .fStats = */ true }; + if (pszArgs) + Args.fStats = strstr(pszArgs, "nost") == NULL; + + /* + * Dump the handlers. + */ + pHlp->pfnPrintf(pHlp, + "Physical handlers: (PhysHandlers=%d (%#x))\n" + "%*s %*s %*s %*s HandlerGC UserGC Type Description\n", + pVM->pgm.s.pTreesR3->PhysHandlers, pVM->pgm.s.pTreesR3->PhysHandlers, + - (int)sizeof(RTGCPHYS) * 2, "From", + - (int)sizeof(RTGCPHYS) * 2 - 3, "- To (incl)", + - (int)sizeof(RTHCPTR) * 2 - 1, "HandlerHC", + - (int)sizeof(RTHCPTR) * 2 - 1, "UserHC"); + RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3InfoHandlersPhysicalOne, &Args); +} + + +/** + * Displays one physical handler range. + * + * @returns 0 + * @param pNode Pointer to a PGMPHYSHANDLER. + * @param pvUser Pointer to command helper functions. + */ +static DECLCALLBACK(int) pgmR3InfoHandlersPhysicalOne(PAVLROGCPHYSNODECORE pNode, void *pvUser) +{ + PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode; + PPGMHANDLERINFOARG pArgs = (PPGMHANDLERINFOARG)pvUser; + PCDBGFINFOHLP pHlp = pArgs->pHlp; + PPGMPHYSHANDLERTYPEINT pCurType = PGMPHYSHANDLER_GET_TYPE(pArgs->pVM, pCur); + const char *pszType; + switch (pCurType->enmKind) + { + case PGMPHYSHANDLERKIND_MMIO: pszType = "MMIO "; break; + case PGMPHYSHANDLERKIND_WRITE: pszType = "Write "; break; + case PGMPHYSHANDLERKIND_ALL: pszType = "All "; break; + default: pszType = "????"; break; + } + pHlp->pfnPrintf(pHlp, + "%RGp - %RGp %RHv %RHv %RHv %RHv %s %s\n", + pCur->Core.Key, pCur->Core.KeyLast, pCurType->pfnHandlerR3, pCur->pvUserR3, + pCurType->pfnPfHandlerR0, pCur->pvUserR0, pszType, pCur->pszDesc); +#ifdef VBOX_WITH_STATISTICS + if (pArgs->fStats) + pHlp->pfnPrintf(pHlp, " cPeriods: %9RU64 cTicks: %11RU64 Min: %11RU64 Avg: %11RU64 Max: %11RU64\n", + pCur->Stat.cPeriods, pCur->Stat.cTicks, pCur->Stat.cTicksMin, + pCur->Stat.cPeriods ? pCur->Stat.cTicks / pCur->Stat.cPeriods : 0, pCur->Stat.cTicksMax); +#endif + return 0; +} + |