diff options
Diffstat (limited to 'src/VBox/HostDrivers/Support/testcase/tstInt.cpp')
-rw-r--r-- | src/VBox/HostDrivers/Support/testcase/tstInt.cpp | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/src/VBox/HostDrivers/Support/testcase/tstInt.cpp b/src/VBox/HostDrivers/Support/testcase/tstInt.cpp new file mode 100644 index 00000000..094d5a3d --- /dev/null +++ b/src/VBox/HostDrivers/Support/testcase/tstInt.cpp @@ -0,0 +1,240 @@ +/* $Id: tstInt.cpp $ */ +/** @file + * SUP Testcase - Test the interrupt gate feature of the support library. + */ + +/* + * Copyright (C) 2006-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <VBox/sup.h> +#include <VBox/vmm/vmm.h> +#include <VBox/vmm/gvmm.h> +#include <VBox/vmm/vm.h> +#include <iprt/errcore.h> +#include <VBox/param.h> +#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) +# include <iprt/asm-amd64-x86.h> +#else +# define ASMReadTSC RTTimeSystemNanoTS +#endif +#include <iprt/initterm.h> +#include <iprt/stream.h> +#include <iprt/string.h> +#include <iprt/alloc.h> +#include <iprt/time.h> +#include <iprt/path.h> + + +int main(int argc, char **argv) +{ + int rcRet = 0; + int i; + int rc; + int cIterations = argc > 1 ? RTStrToUInt32(argv[1]) : 32; + if (cIterations == 0) + cIterations = 64; + + /* + * Init. + */ + RTR3InitExe(argc, &argv, 0); + PSUPDRVSESSION pSession; + rc = SUPR3Init(&pSession); + rcRet += rc != 0; + RTPrintf("tstInt: SUPR3Init -> rc=%Rrc\n", rc); + char szFile[RTPATH_MAX]; + if (!rc) + { + rc = RTPathExecDir(szFile, sizeof(szFile) - sizeof("/VMMR0.r0")); + } + char szAbsFile[RTPATH_MAX]; + if (RT_SUCCESS(rc)) + { + strcat(szFile, "/VMMR0.r0"); + rc = RTPathAbs(szFile, szAbsFile, sizeof(szAbsFile)); + } + if (RT_SUCCESS(rc)) + { + /* + * Load VMM code. + */ + RTERRINFOSTATIC ErrInfo; + rc = SUPR3LoadVMM(szAbsFile, RTErrInfoInitStatic(&ErrInfo)); + if (RT_SUCCESS(rc)) + { + /* + * Create a tiny dummy VM so we can do NOP calls into it using the fast I/O control path. + */ + GVMMCREATEVMREQ CreateVMReq; + CreateVMReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC; + CreateVMReq.Hdr.cbReq = sizeof(CreateVMReq); + CreateVMReq.pSession = pSession; + CreateVMReq.pVMR0 = NIL_RTR0PTR; + CreateVMReq.pVMR3 = NULL; + CreateVMReq.cCpus = 1; + rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, VMMR0_DO_GVMM_CREATE_VM, 0, &CreateVMReq.Hdr); + if (RT_SUCCESS(rc)) + { + PVM pVM = CreateVMReq.pVMR3; + AssertRelease(RT_VALID_PTR(pVM)); + AssertRelease(pVM->pVMR0ForCall == CreateVMReq.pVMR0); + AssertRelease(pVM->pSession == pSession); + AssertRelease(pVM->cCpus == 1); + pVM->enmVMState = VMSTATE_CREATED; + PVMR0 const pVMR0 = CreateVMReq.pVMR0; + + rc = SUPR3SetVMForFastIOCtl(pVMR0); + if (!rc) + { + /* + * Call VMM code with invalid function. + */ + for (i = cIterations; i > 0; i--) + { + rc = SUPR3CallVMMR0(pVMR0, NIL_VMCPUID, VMMR0_DO_SLOW_NOP, NULL); + if (rc != VINF_SUCCESS) + { + RTPrintf("tstInt: SUPR3CallVMMR0 -> rc=%Rrc i=%d Expected VINF_SUCCESS!\n", rc, i); + rcRet++; + break; + } + } + RTPrintf("tstInt: Performed SUPR3CallVMMR0 %d times (rc=%Rrc)\n", cIterations, rc); + + /* + * The fast path. + */ + if (rc == VINF_SUCCESS) + { + RTTimeNanoTS(); + uint64_t StartTS = RTTimeNanoTS(); + uint64_t StartTick = ASMReadTSC(); + uint64_t MinTicks = UINT64_MAX; + for (i = 0; i < 1000000; i++) + { + uint64_t OneStartTick = ASMReadTSC(); + rc = SUPR3CallVMMR0Fast(pVMR0, VMMR0_DO_NOP, 0); + uint64_t Ticks = ASMReadTSC() - OneStartTick; + if (Ticks < MinTicks) + MinTicks = Ticks; + + if (RT_UNLIKELY(rc != VINF_SUCCESS)) + { + RTPrintf("tstInt: SUPR3CallVMMR0Fast -> rc=%Rrc i=%d Expected VINF_SUCCESS!\n", rc, i); + rcRet++; + break; + } + } + uint64_t Ticks = ASMReadTSC() - StartTick; + uint64_t NanoSecs = RTTimeNanoTS() - StartTS; + + RTPrintf("tstInt: SUPR3CallVMMR0Fast - %d iterations in %llu ns / %llu ticks. %llu ns / %#llu ticks per iteration. Min %llu ticks.\n", + i, NanoSecs, Ticks, NanoSecs / i, Ticks / i, MinTicks); + + /* + * The ordinary path. + */ + RTTimeNanoTS(); + StartTS = RTTimeNanoTS(); + StartTick = ASMReadTSC(); + MinTicks = UINT64_MAX; + for (i = 0; i < 1000000; i++) + { + uint64_t OneStartTick = ASMReadTSC(); + rc = SUPR3CallVMMR0Ex(pVMR0, NIL_VMCPUID, VMMR0_DO_SLOW_NOP, 0, NULL); + uint64_t OneTicks = ASMReadTSC() - OneStartTick; + if (OneTicks < MinTicks) + MinTicks = OneTicks; + + if (RT_UNLIKELY(rc != VINF_SUCCESS)) + { + RTPrintf("tstInt: SUPR3CallVMMR0Ex -> rc=%Rrc i=%d Expected VINF_SUCCESS!\n", rc, i); + rcRet++; + break; + } + } + Ticks = ASMReadTSC() - StartTick; + NanoSecs = RTTimeNanoTS() - StartTS; + + RTPrintf("tstInt: SUPR3CallVMMR0Ex - %d iterations in %llu ns / %llu ticks. %llu ns / %#llu ticks per iteration. Min %llu ticks.\n", + i, NanoSecs, Ticks, NanoSecs / i, Ticks / i, MinTicks); + } + } + else + { + RTPrintf("tstInt: SUPR3SetVMForFastIOCtl failed: %Rrc\n", rc); + rcRet++; + } + + rc = SUPR3CallVMMR0Ex(pVMR0, 0 /*idCpu*/, VMMR0_DO_GVMM_DESTROY_VM, 0, NULL); + if (RT_FAILURE(rc)) + { + RTPrintf("tstInt: VMMR0_DO_GVMM_DESTROY_VM failed: %Rrc\n", rc); + rcRet++; + } + } + else + { + RTPrintf("tstInt: VMMR0_DO_GVMM_CREATE_VM failed\n"); + rcRet++; + } + + /* + * Unload VMM. + */ + rc = SUPR3UnloadVMM(); + if (rc) + { + RTPrintf("tstInt: SUPR3UnloadVMM failed with rc=%Rrc\n", rc); + rcRet++; + } + } + else + { + RTPrintf("tstInt: SUPR3LoadVMM failed with rc=%Rrc%#RTeim\n", rc, &ErrInfo.Core); + rcRet++; + } + + /* + * Terminate. + */ + rc = SUPR3Term(false /*fForced*/); + rcRet += rc != 0; + RTPrintf("tstInt: SUPR3Term -> rc=%Rrc\n", rc); + } + + return !!rc; +} + |