From f215e02bf85f68d3a6106c2a1f4f7f063f819064 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:17:27 +0200 Subject: Adding upstream version 7.0.14-dfsg. Signed-off-by: Daniel Baumann --- src/VBox/VMM/VMMR3/VMMTests.cpp | 197 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 197 insertions(+) create mode 100644 src/VBox/VMM/VMMR3/VMMTests.cpp (limited to 'src/VBox/VMM/VMMR3/VMMTests.cpp') diff --git a/src/VBox/VMM/VMMR3/VMMTests.cpp b/src/VBox/VMM/VMMR3/VMMTests.cpp new file mode 100644 index 00000000..23fbbc16 --- /dev/null +++ b/src/VBox/VMM/VMMR3/VMMTests.cpp @@ -0,0 +1,197 @@ +/* $Id: VMMTests.cpp $ */ +/** @file + * VMM - The Virtual Machine Monitor Core, Tests. + */ + +/* + * 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 . + * + * SPDX-License-Identifier: GPL-3.0-only + */ + +//#define NO_SUPCALLR0VMM + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_VMM +#include +#include +#include +#include +#include +#include +#include +#include +#include "VMMInternal.h" +#include +#include +#include + +#include +#include +#include +#include +#include +#include + + +#define SYNC_SEL(pHyperCtx, reg) \ + if (pHyperCtx->reg.Sel) \ + { \ + DBGFSELINFO selInfo; \ + int rc2 = SELMR3GetShadowSelectorInfo(pVM, pHyperCtx->reg.Sel, &selInfo); \ + AssertRC(rc2); \ + \ + pHyperCtx->reg.u64Base = selInfo.GCPtrBase; \ + pHyperCtx->reg.u32Limit = selInfo.cbLimit; \ + pHyperCtx->reg.Attr.n.u1Present = selInfo.u.Raw.Gen.u1Present; \ + pHyperCtx->reg.Attr.n.u1DefBig = selInfo.u.Raw.Gen.u1DefBig; \ + pHyperCtx->reg.Attr.n.u1Granularity = selInfo.u.Raw.Gen.u1Granularity; \ + pHyperCtx->reg.Attr.n.u4Type = selInfo.u.Raw.Gen.u4Type; \ + pHyperCtx->reg.Attr.n.u2Dpl = selInfo.u.Raw.Gen.u2Dpl; \ + pHyperCtx->reg.Attr.n.u1DescType = selInfo.u.Raw.Gen.u1DescType; \ + pHyperCtx->reg.Attr.n.u1Long = selInfo.u.Raw.Gen.u1Long; \ + } + +/* execute the switch. */ +VMMR3DECL(int) VMMDoHmTest(PVM pVM) +{ +#if 1 + RTPrintf("FIXME!\n"); + RT_NOREF(pVM); + return 0; +#else + + uint32_t i; + int rc; + PCPUMCTX pHyperCtx, pGuestCtx; + RTGCPHYS CR3Phys = 0x0; /* fake address */ + PVMCPU pVCpu = &pVM->aCpus[0]; + + if (!HMIsEnabled(pVM)) + { + RTPrintf("VMM: Hardware accelerated test not available!\n"); + return VERR_ACCESS_DENIED; + } + + /* Enable mapping of the hypervisor into the shadow page table. */ + uint32_t cb; + rc = PGMR3MappingsSize(pVM, &cb); + AssertRCReturn(rc, rc); + + /* Pretend the mappings are now fixed; to force a refresh of the reserved PDEs. */ + rc = PGMR3MappingsFix(pVM, MM_HYPER_AREA_ADDRESS, cb); + AssertRCReturn(rc, rc); + + pHyperCtx = CPUMGetHyperCtxPtr(pVCpu); + + pHyperCtx->cr0 = X86_CR0_PE | X86_CR0_WP | X86_CR0_PG | X86_CR0_TS | X86_CR0_ET | X86_CR0_NE | X86_CR0_MP; + pHyperCtx->cr4 = X86_CR4_PGE | X86_CR4_OSFXSR | X86_CR4_OSXMMEEXCPT; + PGMChangeMode(pVCpu, pHyperCtx->cr0, pHyperCtx->cr4, pHyperCtx->msrEFER); + PGMSyncCR3(pVCpu, pHyperCtx->cr0, CR3Phys, pHyperCtx->cr4, true); + + VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3); + VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TIMER); + VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC); + VM_FF_CLEAR(pVM, VM_FF_REQUEST); + + /* + * Setup stack for calling VMMRCEntry(). + */ + RTRCPTR RCPtrEP; + rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "VMMRCEntry", &RCPtrEP); + if (RT_SUCCESS(rc)) + { + RTPrintf("VMM: VMMRCEntry=%RRv\n", RCPtrEP); + + pHyperCtx = CPUMGetHyperCtxPtr(pVCpu); + + /* Fill in hidden selector registers for the hypervisor state. */ + SYNC_SEL(pHyperCtx, cs); + SYNC_SEL(pHyperCtx, ds); + SYNC_SEL(pHyperCtx, es); + SYNC_SEL(pHyperCtx, fs); + SYNC_SEL(pHyperCtx, gs); + SYNC_SEL(pHyperCtx, ss); + SYNC_SEL(pHyperCtx, tr); + + /* + * Profile switching. + */ + RTPrintf("VMM: profiling switcher...\n"); + Log(("VMM: profiling switcher...\n")); + uint64_t TickMin = UINT64_MAX; + uint64_t tsBegin = RTTimeNanoTS(); + uint64_t TickStart = ASMReadTSC(); + for (i = 0; i < 1000000; i++) + { + CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0); + CPUMPushHyper(pVCpu, 0); + CPUMPushHyper(pVCpu, VMMRC_DO_TESTCASE_HM_NOP); + CPUMPushHyper(pVCpu, pVM->pVMRC); + CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */ + CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */ + + pHyperCtx = CPUMGetHyperCtxPtr(pVCpu); + pGuestCtx = CPUMQueryGuestCtxPtr(pVCpu); + + /* Copy the hypervisor context to make sure we have a valid guest context. */ + *pGuestCtx = *pHyperCtx; + pGuestCtx->cr3 = CR3Phys; + + VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3); + VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TIMER); + VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC); + + uint64_t TickThisStart = ASMReadTSC(); + rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_HM_RUN, 0); + uint64_t TickThisElapsed = ASMReadTSC() - TickThisStart; + if (RT_FAILURE(rc)) + { + Log(("VMM: R0 returned fatal %Rrc in iteration %d\n", rc, i)); + VMMR3FatalDump(pVM, pVCpu, rc); + return rc; + } + if (TickThisElapsed < TickMin) + TickMin = TickThisElapsed; + } + uint64_t TickEnd = ASMReadTSC(); + uint64_t tsEnd = RTTimeNanoTS(); + + uint64_t Elapsed = tsEnd - tsBegin; + uint64_t PerIteration = Elapsed / (uint64_t)i; + uint64_t cTicksElapsed = TickEnd - TickStart; + uint64_t cTicksPerIteration = cTicksElapsed / (uint64_t)i; + + RTPrintf("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n", + i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin); + Log(("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n", + i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin)); + + rc = VINF_SUCCESS; + } + else + AssertMsgFailed(("Failed to resolved VMMRC.rc::VMMRCEntry(), rc=%Rrc\n", rc)); + + return rc; +#endif +} + -- cgit v1.2.3