/* $Id: tstMMHyperHeap.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */ /** @file * MM Hypervisor Heap testcase. */ /* * Copyright (C) 2006-2019 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 * *********************************************************************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include /* does not work for more CPUs as SUPR3LowAlloc() would refuse to allocate more pages */ #define NUM_CPUS 16 /** * Entry point. */ extern "C" DECLEXPORT(int) TrustedMain(int argc, char **argv, char **envp) { RT_NOREF1(envp); /* * Init runtime. */ RTR3InitExe(argc, &argv, 0); /* * Create empty VM structure and call MMR3Init(). */ void *pvVM = NULL; RTR0PTR pvR0 = NIL_RTR0PTR; SUPPAGE aPages[RT_ALIGN_Z(sizeof(VM) + NUM_CPUS * sizeof(VMCPU), PAGE_SIZE) >> PAGE_SHIFT]; int rc = SUPR3Init(NULL); if (RT_SUCCESS(rc)) //rc = SUPR3LowAlloc(RT_ELEMENTS(aPages), (void **)&pVM, &pvR0, &aPages[0]); rc = SUPR3PageAllocEx(RT_ELEMENTS(aPages), 0, &pvVM, &pvR0, &aPages[0]); if (RT_FAILURE(rc)) { RTPrintf("Fatal error: SUP Failure! rc=%Rrc\n", rc); return RTEXITCODE_FAILURE; } RT_BZERO(pvVM, RT_ELEMENTS(aPages) * PAGE_SIZE); /* SUPR3PageAllocEx doesn't necessarily zero the memory. */ PVM pVM = (PVM)pvVM; pVM->paVMPagesR3 = aPages; pVM->pVMR0 = pvR0; PUVM pUVM = (PUVM)RTMemPageAllocZ(RT_ALIGN_Z(sizeof(*pUVM), PAGE_SIZE)); if (!pUVM) { RTPrintf("Fatal error: RTMEmPageAllocZ failed\n"); return RTEXITCODE_FAILURE; } pUVM->u32Magic = UVM_MAGIC; pUVM->pVM = pVM; pVM->pUVM = pUVM; pVM->cCpus = NUM_CPUS; pVM->cbSelf = RT_UOFFSETOF_DYN(VM, aCpus[pVM->cCpus]); rc = STAMR3InitUVM(pUVM); if (RT_FAILURE(rc)) { RTPrintf("FAILURE: STAMR3Init failed. rc=%Rrc\n", rc); return 1; } rc = MMR3InitUVM(pUVM); if (RT_FAILURE(rc)) { RTPrintf("FAILURE: STAMR3Init failed. rc=%Rrc\n", rc); return 1; } rc = CFGMR3Init(pVM, NULL, NULL); if (RT_FAILURE(rc)) { RTPrintf("FAILURE: CFGMR3Init failed. rc=%Rrc\n", rc); return 1; } rc = MMR3Init(pVM); if (RT_FAILURE(rc)) { RTPrintf("Fatal error: MMR3Init failed! rc=%Rrc\n", rc); return 1; } /* * Try allocate. */ static struct { size_t cb; unsigned uAlignment; void *pvAlloc; unsigned iFreeOrder; } aOps[] = { { 16, 0, NULL, 0 }, { 16, 4, NULL, 1 }, { 16, 8, NULL, 2 }, { 16, 16, NULL, 5 }, { 16, 32, NULL, 4 }, { 32, 0, NULL, 3 }, { 31, 0, NULL, 6 }, { 1024, 0, NULL, 8 }, { 1024, 32, NULL, 10 }, { 1024, 32, NULL, 12 }, { PAGE_SIZE, PAGE_SIZE, NULL, 13 }, { 1024, 32, NULL, 9 }, { PAGE_SIZE, 32, NULL, 11 }, { PAGE_SIZE, PAGE_SIZE, NULL, 14 }, { 16, 0, NULL, 15 }, { 9, 0, NULL, 7 }, { 16, 0, NULL, 7 }, { 36, 0, NULL, 7 }, { 16, 0, NULL, 7 }, { 12344, 0, NULL, 7 }, { 50, 0, NULL, 7 }, { 16, 0, NULL, 7 }, }; unsigned i; #ifdef DEBUG MMHyperHeapDump(pVM); #endif size_t cbBefore = MMHyperHeapGetFreeSize(pVM); static char szFill[] = "01234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; /* allocate */ for (i = 0; i < RT_ELEMENTS(aOps); i++) { rc = MMHyperAlloc(pVM, aOps[i].cb, aOps[i].uAlignment, MM_TAG_VM, &aOps[i].pvAlloc); if (RT_FAILURE(rc)) { RTPrintf("Failure: MMHyperAlloc(, %#x, %#x,) -> %d i=%d\n", aOps[i].cb, aOps[i].uAlignment, rc, i); return 1; } memset(aOps[i].pvAlloc, szFill[i], aOps[i].cb); if (RT_ALIGN_P(aOps[i].pvAlloc, (aOps[i].uAlignment ? aOps[i].uAlignment : 8)) != aOps[i].pvAlloc) { RTPrintf("Failure: MMHyperAlloc(, %#x, %#x,) -> %p, invalid alignment!\n", aOps[i].cb, aOps[i].uAlignment, aOps[i].pvAlloc); return 1; } } /* free and allocate the same node again. */ for (i = 0; i < RT_ELEMENTS(aOps); i++) { if ( !aOps[i].pvAlloc || aOps[i].uAlignment == PAGE_SIZE) continue; //size_t cbBeforeSub = MMHyperHeapGetFreeSize(pVM); rc = MMHyperFree(pVM, aOps[i].pvAlloc); if (RT_FAILURE(rc)) { RTPrintf("Failure: MMHyperFree(, %p,) -> %d i=%d\n", aOps[i].pvAlloc, rc, i); return 1; } //RTPrintf("debug: i=%d cbBeforeSub=%d now=%d\n", i, cbBeforeSub, MMHyperHeapGetFreeSize(pVM)); void *pv; rc = MMHyperAlloc(pVM, aOps[i].cb, aOps[i].uAlignment, MM_TAG_VM_REQ, &pv); if (RT_FAILURE(rc)) { RTPrintf("Failure: MMHyperAlloc(, %#x, %#x,) -> %d i=%d\n", aOps[i].cb, aOps[i].uAlignment, rc, i); return 1; } if (pv != aOps[i].pvAlloc) { RTPrintf("Failure: Free+Alloc returned different address. new=%p old=%p i=%d (doesn't work with delayed free)\n", pv, aOps[i].pvAlloc, i); //return 1; } aOps[i].pvAlloc = pv; #if 0 /* won't work :/ */ size_t cbAfterSub = MMHyperHeapGetFreeSize(pVM); if (cbBeforeSub != cbAfterSub) { RTPrintf("Failure: cbBeforeSub=%d cbAfterSub=%d. i=%d\n", cbBeforeSub, cbAfterSub, i); return 1; } #endif } /* free it in a specific order. */ int cFreed = 0; for (i = 0; i < RT_ELEMENTS(aOps); i++) { unsigned j; for (j = 0; j < RT_ELEMENTS(aOps); j++) { if ( aOps[j].iFreeOrder != i || !aOps[j].pvAlloc) continue; RTPrintf("j=%d i=%d free=%d cb=%d pv=%p\n", j, i, MMHyperHeapGetFreeSize(pVM), aOps[j].cb, aOps[j].pvAlloc); if (aOps[j].uAlignment == PAGE_SIZE) cbBefore -= aOps[j].cb; else { rc = MMHyperFree(pVM, aOps[j].pvAlloc); if (RT_FAILURE(rc)) { RTPrintf("Failure: MMHyperFree(, %p,) -> %d j=%d i=%d\n", aOps[j].pvAlloc, rc, i, j); return 1; } } aOps[j].pvAlloc = NULL; cFreed++; } } Assert(cFreed == RT_ELEMENTS(aOps)); RTPrintf("i=done free=%d\n", MMHyperHeapGetFreeSize(pVM)); /* check that we're back at the right amount of free memory. */ size_t cbAfter = MMHyperHeapGetFreeSize(pVM); if (cbBefore != cbAfter) { RTPrintf("Warning: Either we've split out an alignment chunk at the start, or we've got\n" " an alloc/free accounting bug: cbBefore=%d cbAfter=%d\n", cbBefore, cbAfter); #ifdef DEBUG MMHyperHeapDump(pVM); #endif } RTPrintf("tstMMHyperHeap: Success\n"); #ifdef LOG_ENABLED RTLogFlush(NULL); #endif SUPR3PageFreeEx(pVM, RT_ELEMENTS(aPages)); RTMemPageFree(pUVM, RT_ALIGN_Z(sizeof(*pUVM), PAGE_SIZE)); return 0; } #if !defined(VBOX_WITH_HARDENING) || !defined(RT_OS_WINDOWS) /** * Main entry point. */ int main(int argc, char **argv, char **envp) { return TrustedMain(argc, argv, envp); } #endif