base.hh revision 9754
19651SAndreas.Sandberg@ARM.com/* 29651SAndreas.Sandberg@ARM.com * Copyright (c) 2012 ARM Limited 39651SAndreas.Sandberg@ARM.com * All rights reserved 49651SAndreas.Sandberg@ARM.com * 59651SAndreas.Sandberg@ARM.com * The license below extends only to copyright in the software and shall 69651SAndreas.Sandberg@ARM.com * not be construed as granting a license to any other intellectual 79651SAndreas.Sandberg@ARM.com * property including but not limited to intellectual property relating 89651SAndreas.Sandberg@ARM.com * to a hardware implementation of the functionality of the software 99651SAndreas.Sandberg@ARM.com * licensed hereunder. You may use the software subject to the license 109651SAndreas.Sandberg@ARM.com * terms below provided that you ensure that this notice is replicated 119651SAndreas.Sandberg@ARM.com * unmodified and in its entirety in all distributions of the software, 129651SAndreas.Sandberg@ARM.com * modified or unmodified, in source code or in binary form. 139651SAndreas.Sandberg@ARM.com * 149651SAndreas.Sandberg@ARM.com * Redistribution and use in source and binary forms, with or without 159651SAndreas.Sandberg@ARM.com * modification, are permitted provided that the following conditions are 169651SAndreas.Sandberg@ARM.com * met: redistributions of source code must retain the above copyright 179651SAndreas.Sandberg@ARM.com * notice, this list of conditions and the following disclaimer; 189651SAndreas.Sandberg@ARM.com * redistributions in binary form must reproduce the above copyright 199651SAndreas.Sandberg@ARM.com * notice, this list of conditions and the following disclaimer in the 209651SAndreas.Sandberg@ARM.com * documentation and/or other materials provided with the distribution; 219651SAndreas.Sandberg@ARM.com * neither the name of the copyright holders nor the names of its 229651SAndreas.Sandberg@ARM.com * contributors may be used to endorse or promote products derived from 239651SAndreas.Sandberg@ARM.com * this software without specific prior written permission. 249651SAndreas.Sandberg@ARM.com * 259651SAndreas.Sandberg@ARM.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 269651SAndreas.Sandberg@ARM.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 279651SAndreas.Sandberg@ARM.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 289651SAndreas.Sandberg@ARM.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 299651SAndreas.Sandberg@ARM.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 309651SAndreas.Sandberg@ARM.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 319651SAndreas.Sandberg@ARM.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 329651SAndreas.Sandberg@ARM.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 339651SAndreas.Sandberg@ARM.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 349651SAndreas.Sandberg@ARM.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 359651SAndreas.Sandberg@ARM.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 369651SAndreas.Sandberg@ARM.com * 379651SAndreas.Sandberg@ARM.com * Authors: Andreas Sandberg 389651SAndreas.Sandberg@ARM.com */ 399651SAndreas.Sandberg@ARM.com 409651SAndreas.Sandberg@ARM.com#ifndef __CPU_KVM_BASE_HH__ 419651SAndreas.Sandberg@ARM.com#define __CPU_KVM_BASE_HH__ 429651SAndreas.Sandberg@ARM.com 439651SAndreas.Sandberg@ARM.com#include <memory> 449753Sandreas@sandberg.pp.se#include <csignal> 459651SAndreas.Sandberg@ARM.com 469651SAndreas.Sandberg@ARM.com#include "base/statistics.hh" 479651SAndreas.Sandberg@ARM.com#include "cpu/kvm/perfevent.hh" 489651SAndreas.Sandberg@ARM.com#include "cpu/kvm/timer.hh" 499651SAndreas.Sandberg@ARM.com#include "cpu/kvm/vm.hh" 509651SAndreas.Sandberg@ARM.com#include "cpu/base.hh" 519651SAndreas.Sandberg@ARM.com#include "cpu/simple_thread.hh" 529651SAndreas.Sandberg@ARM.com 539651SAndreas.Sandberg@ARM.com/** Signal to use to trigger time-based exits from KVM */ 549651SAndreas.Sandberg@ARM.com#define KVM_TIMER_SIGNAL SIGRTMIN 559651SAndreas.Sandberg@ARM.com 569651SAndreas.Sandberg@ARM.com// forward declarations 579651SAndreas.Sandberg@ARM.comclass ThreadContext; 589651SAndreas.Sandberg@ARM.comstruct BaseKvmCPUParams; 599651SAndreas.Sandberg@ARM.com 609651SAndreas.Sandberg@ARM.com/** 619651SAndreas.Sandberg@ARM.com * Base class for KVM based CPU models 629651SAndreas.Sandberg@ARM.com * 639651SAndreas.Sandberg@ARM.com * All architecture specific KVM implementation should inherit from 649651SAndreas.Sandberg@ARM.com * this class. The most basic CPU models only need to override the 659651SAndreas.Sandberg@ARM.com * updateKvmState() and updateThreadContext() methods to implement 669651SAndreas.Sandberg@ARM.com * state synchronization between gem5 and KVM. 679651SAndreas.Sandberg@ARM.com * 689651SAndreas.Sandberg@ARM.com * The architecture specific implementation is also responsible for 699651SAndreas.Sandberg@ARM.com * delivering interrupts into the VM. This is typically done by 709651SAndreas.Sandberg@ARM.com * overriding tick() and checking the thread context before entering 719651SAndreas.Sandberg@ARM.com * into the VM. In order to deliver an interrupt, the implementation 729651SAndreas.Sandberg@ARM.com * then calls KvmVM::setIRQLine() or BaseKvmCPU::kvmInterrupt() 739651SAndreas.Sandberg@ARM.com * depending on the specifics of the underlying hardware/drivers. 749651SAndreas.Sandberg@ARM.com */ 759651SAndreas.Sandberg@ARM.comclass BaseKvmCPU : public BaseCPU 769651SAndreas.Sandberg@ARM.com{ 779651SAndreas.Sandberg@ARM.com public: 789651SAndreas.Sandberg@ARM.com BaseKvmCPU(BaseKvmCPUParams *params); 799651SAndreas.Sandberg@ARM.com virtual ~BaseKvmCPU(); 809651SAndreas.Sandberg@ARM.com 819651SAndreas.Sandberg@ARM.com void init(); 829651SAndreas.Sandberg@ARM.com void startup(); 839651SAndreas.Sandberg@ARM.com void regStats(); 849651SAndreas.Sandberg@ARM.com 859651SAndreas.Sandberg@ARM.com void serializeThread(std::ostream &os, ThreadID tid); 869651SAndreas.Sandberg@ARM.com void unserializeThread(Checkpoint *cp, const std::string §ion, 879651SAndreas.Sandberg@ARM.com ThreadID tid); 889651SAndreas.Sandberg@ARM.com 899651SAndreas.Sandberg@ARM.com unsigned int drain(DrainManager *dm); 909651SAndreas.Sandberg@ARM.com void drainResume(); 919651SAndreas.Sandberg@ARM.com 929651SAndreas.Sandberg@ARM.com void switchOut(); 939651SAndreas.Sandberg@ARM.com void takeOverFrom(BaseCPU *cpu); 949651SAndreas.Sandberg@ARM.com 959651SAndreas.Sandberg@ARM.com void verifyMemoryMode() const; 969651SAndreas.Sandberg@ARM.com 979688Sandreas@sandberg.pp.se MasterPort &getDataPort() { return dataPort; } 989688Sandreas@sandberg.pp.se MasterPort &getInstPort() { return instPort; } 999651SAndreas.Sandberg@ARM.com 1009651SAndreas.Sandberg@ARM.com void wakeup(); 1019651SAndreas.Sandberg@ARM.com void activateContext(ThreadID thread_num, Cycles delay); 1029651SAndreas.Sandberg@ARM.com void suspendContext(ThreadID thread_num); 1039651SAndreas.Sandberg@ARM.com void deallocateContext(ThreadID thread_num); 1049651SAndreas.Sandberg@ARM.com void haltContext(ThreadID thread_num); 1059651SAndreas.Sandberg@ARM.com 1069652SAndreas.Sandberg@ARM.com ThreadContext *getContext(int tn); 1079652SAndreas.Sandberg@ARM.com 1089651SAndreas.Sandberg@ARM.com Counter totalInsts() const; 1099651SAndreas.Sandberg@ARM.com Counter totalOps() const; 1109651SAndreas.Sandberg@ARM.com 1119651SAndreas.Sandberg@ARM.com /** Dump the internal state to the terminal. */ 1129651SAndreas.Sandberg@ARM.com virtual void dump(); 1139651SAndreas.Sandberg@ARM.com 1149652SAndreas.Sandberg@ARM.com /** 1159652SAndreas.Sandberg@ARM.com * A cached copy of a thread's state in the form of a SimpleThread 1169652SAndreas.Sandberg@ARM.com * object. 1179652SAndreas.Sandberg@ARM.com * 1189652SAndreas.Sandberg@ARM.com * Normally the actual thread state is stored in the KVM vCPU. If KVM has 1199652SAndreas.Sandberg@ARM.com * been running this copy is will be out of date. If we recently handled 1209652SAndreas.Sandberg@ARM.com * some events within gem5 that required state to be updated this could be 1219652SAndreas.Sandberg@ARM.com * the most up-to-date copy. When getContext() or updateThreadContext() is 1229652SAndreas.Sandberg@ARM.com * called this copy gets updated. The method syncThreadContext can 1239652SAndreas.Sandberg@ARM.com * be used within a KVM CPU to update the thread context if the 1249652SAndreas.Sandberg@ARM.com * KVM state is dirty (i.e., the vCPU has been run since the last 1259652SAndreas.Sandberg@ARM.com * update). 1269652SAndreas.Sandberg@ARM.com */ 1279651SAndreas.Sandberg@ARM.com SimpleThread *thread; 1289651SAndreas.Sandberg@ARM.com 1299651SAndreas.Sandberg@ARM.com /** ThreadContext object, provides an interface for external 1309651SAndreas.Sandberg@ARM.com * objects to modify this thread's state. 1319651SAndreas.Sandberg@ARM.com */ 1329651SAndreas.Sandberg@ARM.com ThreadContext *tc; 1339651SAndreas.Sandberg@ARM.com 1349651SAndreas.Sandberg@ARM.com KvmVM &vm; 1359651SAndreas.Sandberg@ARM.com 1369651SAndreas.Sandberg@ARM.com protected: 1379753Sandreas@sandberg.pp.se /** 1389753Sandreas@sandberg.pp.se * 1399753Sandreas@sandberg.pp.se * @dot 1409753Sandreas@sandberg.pp.se * digraph { 1419753Sandreas@sandberg.pp.se * Idle; 1429753Sandreas@sandberg.pp.se * Running; 1439753Sandreas@sandberg.pp.se * RunningService; 1449753Sandreas@sandberg.pp.se * RunningServiceCompletion; 1459753Sandreas@sandberg.pp.se * 1469753Sandreas@sandberg.pp.se * Idle -> Idle; 1479753Sandreas@sandberg.pp.se * Idle -> Running [label="activateContext()", URL="\ref activateContext"]; 1489753Sandreas@sandberg.pp.se * Running -> Running [label="tick()", URL="\ref tick"]; 1499753Sandreas@sandberg.pp.se * Running -> RunningService [label="tick()", URL="\ref tick"]; 1509753Sandreas@sandberg.pp.se * Running -> Idle [label="suspendContext()", URL="\ref suspendContext"]; 1519753Sandreas@sandberg.pp.se * Running -> Idle [label="drain()", URL="\ref drain"]; 1529753Sandreas@sandberg.pp.se * Idle -> Running [label="drainResume()", URL="\ref drainResume"]; 1539753Sandreas@sandberg.pp.se * RunningService -> RunningServiceCompletion [label="handleKvmExit()", URL="\ref handleKvmExit"]; 1549753Sandreas@sandberg.pp.se * RunningServiceCompletion -> Running [label="tick()", URL="\ref tick"]; 1559753Sandreas@sandberg.pp.se * RunningServiceCompletion -> RunningService [label="tick()", URL="\ref tick"]; 1569753Sandreas@sandberg.pp.se * } 1579753Sandreas@sandberg.pp.se * @enddot 1589753Sandreas@sandberg.pp.se */ 1599651SAndreas.Sandberg@ARM.com enum Status { 1609753Sandreas@sandberg.pp.se /** Context not scheduled in KVM. 1619753Sandreas@sandberg.pp.se * 1629753Sandreas@sandberg.pp.se * The CPU generally enters this state when the guest execute 1639753Sandreas@sandberg.pp.se * an instruction that halts the CPU (e.g., WFI on ARM or HLT 1649753Sandreas@sandberg.pp.se * on X86) if KVM traps this instruction. Ticks are not 1659753Sandreas@sandberg.pp.se * scheduled in this state. 1669753Sandreas@sandberg.pp.se * 1679753Sandreas@sandberg.pp.se * @see suspendContext() 1689753Sandreas@sandberg.pp.se */ 1699651SAndreas.Sandberg@ARM.com Idle, 1709753Sandreas@sandberg.pp.se /** Running normally. 1719753Sandreas@sandberg.pp.se * 1729753Sandreas@sandberg.pp.se * This is the normal run state of the CPU. KVM will be 1739753Sandreas@sandberg.pp.se * entered next time tick() is called. 1749753Sandreas@sandberg.pp.se */ 1759651SAndreas.Sandberg@ARM.com Running, 1769753Sandreas@sandberg.pp.se /** Requiring service at the beginning of the next cycle. 1779753Sandreas@sandberg.pp.se * 1789753Sandreas@sandberg.pp.se * The virtual machine has exited and requires service, tick() 1799753Sandreas@sandberg.pp.se * will call handleKvmExit() on the next cycle. The next state 1809753Sandreas@sandberg.pp.se * after running service is determined in handleKvmExit() and 1819753Sandreas@sandberg.pp.se * depends on what kind of service the guest requested: 1829753Sandreas@sandberg.pp.se * <ul> 1839753Sandreas@sandberg.pp.se * <li>IO/MMIO: RunningServiceCompletion 1849753Sandreas@sandberg.pp.se * <li>Halt: Idle 1859753Sandreas@sandberg.pp.se * <li>Others: Running 1869753Sandreas@sandberg.pp.se * </ul> 1879753Sandreas@sandberg.pp.se */ 1889753Sandreas@sandberg.pp.se RunningService, 1899753Sandreas@sandberg.pp.se /** Service completion in progress. 1909753Sandreas@sandberg.pp.se * 1919753Sandreas@sandberg.pp.se * The VM has requested service that requires KVM to be 1929753Sandreas@sandberg.pp.se * entered once in order to get to a consistent state. This 1939753Sandreas@sandberg.pp.se * happens in handleKvmExit() or one of its friends after IO 1949753Sandreas@sandberg.pp.se * exits. After executing tick(), the CPU will transition into 1959753Sandreas@sandberg.pp.se * the Running or RunningService state. 1969753Sandreas@sandberg.pp.se */ 1979753Sandreas@sandberg.pp.se RunningServiceCompletion, 1989651SAndreas.Sandberg@ARM.com }; 1999651SAndreas.Sandberg@ARM.com 2009651SAndreas.Sandberg@ARM.com /** CPU run state */ 2019651SAndreas.Sandberg@ARM.com Status _status; 2029651SAndreas.Sandberg@ARM.com 2039651SAndreas.Sandberg@ARM.com /** 2049651SAndreas.Sandberg@ARM.com * Execute the CPU until the next event in the main event queue or 2059651SAndreas.Sandberg@ARM.com * until the guest needs service from gem5. 2069651SAndreas.Sandberg@ARM.com */ 2079753Sandreas@sandberg.pp.se void tick(); 2089651SAndreas.Sandberg@ARM.com 2099651SAndreas.Sandberg@ARM.com /** 2109735Sandreas@sandberg.pp.se * Get the value of the hardware cycle counter in the guest. 2119735Sandreas@sandberg.pp.se * 2129735Sandreas@sandberg.pp.se * This method is supposed to return the total number of cycles 2139735Sandreas@sandberg.pp.se * executed in hardware mode relative to some arbitrary point in 2149735Sandreas@sandberg.pp.se * the past. It's mainly used when estimating the number of cycles 2159735Sandreas@sandberg.pp.se * actually executed by the CPU in kvmRun(). The default behavior 2169735Sandreas@sandberg.pp.se * of this method is to use the cycles performance counter, but 2179735Sandreas@sandberg.pp.se * some architectures may want to use internal registers instead. 2189735Sandreas@sandberg.pp.se * 2199735Sandreas@sandberg.pp.se * @return Number of host cycles executed relative to an undefined 2209735Sandreas@sandberg.pp.se * point in the past. 2219735Sandreas@sandberg.pp.se */ 2229735Sandreas@sandberg.pp.se virtual uint64_t getHostCycles() const; 2239735Sandreas@sandberg.pp.se 2249735Sandreas@sandberg.pp.se /** 2259651SAndreas.Sandberg@ARM.com * Request KVM to run the guest for a given number of ticks. The 2269651SAndreas.Sandberg@ARM.com * method returns the approximate number of ticks executed. 2279651SAndreas.Sandberg@ARM.com * 2289651SAndreas.Sandberg@ARM.com * @note The returned number of ticks can be both larger or 2299651SAndreas.Sandberg@ARM.com * smaller than the requested number of ticks. A smaller number 2309651SAndreas.Sandberg@ARM.com * can, for example, occur when the guest executes MMIO. A larger 2319651SAndreas.Sandberg@ARM.com * number is typically due to performance counter inaccuracies. 2329651SAndreas.Sandberg@ARM.com * 2339753Sandreas@sandberg.pp.se * @note This method is virtual in order to allow implementations 2349753Sandreas@sandberg.pp.se * to check for architecture specific events (e.g., interrupts) 2359753Sandreas@sandberg.pp.se * before entering the VM. 2369753Sandreas@sandberg.pp.se * 2379753Sandreas@sandberg.pp.se * @note It is the response of the caller (normally tick()) to 2389753Sandreas@sandberg.pp.se * make sure that the KVM state is synchronized and that the TC is 2399753Sandreas@sandberg.pp.se * invalidated after entering KVM. 2409753Sandreas@sandberg.pp.se * 2419753Sandreas@sandberg.pp.se * @param ticks Number of ticks to execute, set to 0 to exit 2429753Sandreas@sandberg.pp.se * immediately after finishing pending operations. 2439651SAndreas.Sandberg@ARM.com * @return Number of ticks executed (see note) 2449651SAndreas.Sandberg@ARM.com */ 2459753Sandreas@sandberg.pp.se virtual Tick kvmRun(Tick ticks); 2469753Sandreas@sandberg.pp.se 2479753Sandreas@sandberg.pp.se /** 2489753Sandreas@sandberg.pp.se * Request the CPU to run until draining completes. 2499753Sandreas@sandberg.pp.se * 2509753Sandreas@sandberg.pp.se * This function normally calls kvmRun(0) to make KVM finish 2519753Sandreas@sandberg.pp.se * pending MMIO operations. Architecures implementing 2529753Sandreas@sandberg.pp.se * archIsDrained() must override this method. 2539753Sandreas@sandberg.pp.se * 2549753Sandreas@sandberg.pp.se * @see BaseKvmCPU::archIsDrained() 2559753Sandreas@sandberg.pp.se * 2569753Sandreas@sandberg.pp.se * @return Number of ticks executed 2579753Sandreas@sandberg.pp.se */ 2589753Sandreas@sandberg.pp.se virtual Tick kvmRunDrain(); 2599651SAndreas.Sandberg@ARM.com 2609651SAndreas.Sandberg@ARM.com /** 2619651SAndreas.Sandberg@ARM.com * Get a pointer to the kvm_run structure containing all the input 2629651SAndreas.Sandberg@ARM.com * and output parameters from kvmRun(). 2639651SAndreas.Sandberg@ARM.com */ 2649651SAndreas.Sandberg@ARM.com struct kvm_run *getKvmRunState() { return _kvmRun; }; 2659651SAndreas.Sandberg@ARM.com 2669651SAndreas.Sandberg@ARM.com /** 2679651SAndreas.Sandberg@ARM.com * Retrieve a pointer to guest data stored at the end of the 2689651SAndreas.Sandberg@ARM.com * kvm_run structure. This is mainly used for PIO operations 2699651SAndreas.Sandberg@ARM.com * (KVM_EXIT_IO). 2709651SAndreas.Sandberg@ARM.com * 2719651SAndreas.Sandberg@ARM.com * @param offset Offset as specified by the kvm_run structure 2729651SAndreas.Sandberg@ARM.com * @return Pointer to guest data 2739651SAndreas.Sandberg@ARM.com */ 2749651SAndreas.Sandberg@ARM.com uint8_t *getGuestData(uint64_t offset) const { 2759651SAndreas.Sandberg@ARM.com return (uint8_t *)_kvmRun + offset; 2769651SAndreas.Sandberg@ARM.com }; 2779651SAndreas.Sandberg@ARM.com 2789651SAndreas.Sandberg@ARM.com /** 2799651SAndreas.Sandberg@ARM.com * @addtogroup KvmInterrupts 2809651SAndreas.Sandberg@ARM.com * @{ 2819651SAndreas.Sandberg@ARM.com */ 2829651SAndreas.Sandberg@ARM.com /** 2839651SAndreas.Sandberg@ARM.com * Send a non-maskable interrupt to the guest 2849651SAndreas.Sandberg@ARM.com * 2859651SAndreas.Sandberg@ARM.com * @note The presence of this call depends on Kvm::capUserNMI(). 2869651SAndreas.Sandberg@ARM.com */ 2879651SAndreas.Sandberg@ARM.com void kvmNonMaskableInterrupt(); 2889651SAndreas.Sandberg@ARM.com 2899651SAndreas.Sandberg@ARM.com /** 2909651SAndreas.Sandberg@ARM.com * Send a normal interrupt to the guest 2919651SAndreas.Sandberg@ARM.com * 2929651SAndreas.Sandberg@ARM.com * @note Make sure that ready_for_interrupt_injection in kvm_run 2939651SAndreas.Sandberg@ARM.com * is set prior to calling this function. If not, an interrupt 2949651SAndreas.Sandberg@ARM.com * window must be requested by setting request_interrupt_window in 2959651SAndreas.Sandberg@ARM.com * kvm_run to 1 and restarting the guest. 2969651SAndreas.Sandberg@ARM.com * 2979651SAndreas.Sandberg@ARM.com * @param interrupt Structure describing the interrupt to send 2989651SAndreas.Sandberg@ARM.com */ 2999651SAndreas.Sandberg@ARM.com void kvmInterrupt(const struct kvm_interrupt &interrupt); 3009651SAndreas.Sandberg@ARM.com 3019651SAndreas.Sandberg@ARM.com /** @} */ 3029651SAndreas.Sandberg@ARM.com 3039651SAndreas.Sandberg@ARM.com /** @{ */ 3049651SAndreas.Sandberg@ARM.com /** 3059651SAndreas.Sandberg@ARM.com * Get/Set the register state of the guest vCPU 3069651SAndreas.Sandberg@ARM.com * 3079651SAndreas.Sandberg@ARM.com * KVM has two different interfaces for accessing the state of the 3089651SAndreas.Sandberg@ARM.com * guest CPU. One interface updates 'normal' registers and one 3099651SAndreas.Sandberg@ARM.com * updates 'special' registers. The distinction between special 3109651SAndreas.Sandberg@ARM.com * and normal registers isn't very clear and is architecture 3119651SAndreas.Sandberg@ARM.com * dependent. 3129651SAndreas.Sandberg@ARM.com */ 3139651SAndreas.Sandberg@ARM.com void getRegisters(struct kvm_regs ®s) const; 3149651SAndreas.Sandberg@ARM.com void setRegisters(const struct kvm_regs ®s); 3159651SAndreas.Sandberg@ARM.com void getSpecialRegisters(struct kvm_sregs ®s) const; 3169651SAndreas.Sandberg@ARM.com void setSpecialRegisters(const struct kvm_sregs ®s); 3179651SAndreas.Sandberg@ARM.com /** @} */ 3189651SAndreas.Sandberg@ARM.com 3199651SAndreas.Sandberg@ARM.com /** @{ */ 3209651SAndreas.Sandberg@ARM.com /** 3219651SAndreas.Sandberg@ARM.com * Get/Set the guest FPU/vector state 3229651SAndreas.Sandberg@ARM.com */ 3239651SAndreas.Sandberg@ARM.com void getFPUState(struct kvm_fpu &state) const; 3249651SAndreas.Sandberg@ARM.com void setFPUState(const struct kvm_fpu &state); 3259651SAndreas.Sandberg@ARM.com /** @} */ 3269651SAndreas.Sandberg@ARM.com 3279651SAndreas.Sandberg@ARM.com /** @{ */ 3289651SAndreas.Sandberg@ARM.com /** 3299651SAndreas.Sandberg@ARM.com * Get/Set single register using the KVM_(SET|GET)_ONE_REG API. 3309651SAndreas.Sandberg@ARM.com * 3319651SAndreas.Sandberg@ARM.com * @note The presence of this call depends on Kvm::capOneReg(). 3329651SAndreas.Sandberg@ARM.com */ 3339651SAndreas.Sandberg@ARM.com void setOneReg(uint64_t id, const void *addr); 3349651SAndreas.Sandberg@ARM.com void setOneReg(uint64_t id, uint64_t value) { setOneReg(id, &value); } 3359651SAndreas.Sandberg@ARM.com void setOneReg(uint64_t id, uint32_t value) { setOneReg(id, &value); } 3369651SAndreas.Sandberg@ARM.com void getOneReg(uint64_t id, void *addr) const; 3379651SAndreas.Sandberg@ARM.com uint64_t getOneRegU64(uint64_t id) const { 3389651SAndreas.Sandberg@ARM.com uint64_t value; 3399651SAndreas.Sandberg@ARM.com getOneReg(id, &value); 3409651SAndreas.Sandberg@ARM.com return value; 3419651SAndreas.Sandberg@ARM.com } 3429651SAndreas.Sandberg@ARM.com uint32_t getOneRegU32(uint64_t id) const { 3439651SAndreas.Sandberg@ARM.com uint32_t value; 3449651SAndreas.Sandberg@ARM.com getOneReg(id, &value); 3459651SAndreas.Sandberg@ARM.com return value; 3469651SAndreas.Sandberg@ARM.com } 3479651SAndreas.Sandberg@ARM.com /** @} */ 3489651SAndreas.Sandberg@ARM.com 3499651SAndreas.Sandberg@ARM.com /** 3509651SAndreas.Sandberg@ARM.com * Get and format one register for printout. 3519651SAndreas.Sandberg@ARM.com * 3529651SAndreas.Sandberg@ARM.com * This function call getOneReg() to retrieve the contents of one 3539651SAndreas.Sandberg@ARM.com * register and automatically formats it for printing. 3549651SAndreas.Sandberg@ARM.com * 3559651SAndreas.Sandberg@ARM.com * @note The presence of this call depends on Kvm::capOneReg(). 3569651SAndreas.Sandberg@ARM.com */ 3579651SAndreas.Sandberg@ARM.com std::string getAndFormatOneReg(uint64_t id) const; 3589651SAndreas.Sandberg@ARM.com 3599651SAndreas.Sandberg@ARM.com /** @{ */ 3609651SAndreas.Sandberg@ARM.com /** 3619651SAndreas.Sandberg@ARM.com * Update the KVM state from the current thread context 3629651SAndreas.Sandberg@ARM.com * 3639651SAndreas.Sandberg@ARM.com * The base CPU calls this method before starting the guest CPU 3649651SAndreas.Sandberg@ARM.com * when the contextDirty flag is set. The architecture dependent 3659651SAndreas.Sandberg@ARM.com * CPU implementation is expected to update all guest state 3669651SAndreas.Sandberg@ARM.com * (registers, special registers, and FPU state). 3679651SAndreas.Sandberg@ARM.com */ 3689651SAndreas.Sandberg@ARM.com virtual void updateKvmState() = 0; 3699651SAndreas.Sandberg@ARM.com 3709651SAndreas.Sandberg@ARM.com /** 3719651SAndreas.Sandberg@ARM.com * Update the current thread context with the KVM state 3729651SAndreas.Sandberg@ARM.com * 3739651SAndreas.Sandberg@ARM.com * The base CPU after the guest updates any of the KVM state. In 3749651SAndreas.Sandberg@ARM.com * practice, this happens after kvmRun is called. The architecture 3759651SAndreas.Sandberg@ARM.com * dependent code is expected to read the state of the guest CPU 3769651SAndreas.Sandberg@ARM.com * and update gem5's thread state. 3779651SAndreas.Sandberg@ARM.com */ 3789651SAndreas.Sandberg@ARM.com virtual void updateThreadContext() = 0; 3799652SAndreas.Sandberg@ARM.com 3809652SAndreas.Sandberg@ARM.com /** 3819652SAndreas.Sandberg@ARM.com * Update a thread context if the KVM state is dirty with respect 3829652SAndreas.Sandberg@ARM.com * to the cached thread context. 3839652SAndreas.Sandberg@ARM.com */ 3849652SAndreas.Sandberg@ARM.com void syncThreadContext(); 3859652SAndreas.Sandberg@ARM.com 3869652SAndreas.Sandberg@ARM.com /** 3879652SAndreas.Sandberg@ARM.com * Update the KVM if the thread context is dirty. 3889652SAndreas.Sandberg@ARM.com */ 3899652SAndreas.Sandberg@ARM.com void syncKvmState(); 3909651SAndreas.Sandberg@ARM.com /** @} */ 3919651SAndreas.Sandberg@ARM.com 3929651SAndreas.Sandberg@ARM.com /** @{ */ 3939651SAndreas.Sandberg@ARM.com /** 3949651SAndreas.Sandberg@ARM.com * Main kvmRun exit handler, calls the relevant handleKvmExit* 3959651SAndreas.Sandberg@ARM.com * depending on exit type. 3969651SAndreas.Sandberg@ARM.com * 3979651SAndreas.Sandberg@ARM.com * @return Number of ticks spent servicing the exit request 3989651SAndreas.Sandberg@ARM.com */ 3999651SAndreas.Sandberg@ARM.com virtual Tick handleKvmExit(); 4009651SAndreas.Sandberg@ARM.com 4019651SAndreas.Sandberg@ARM.com /** 4029651SAndreas.Sandberg@ARM.com * The guest performed a legacy IO request (out/inp on x86) 4039651SAndreas.Sandberg@ARM.com * 4049651SAndreas.Sandberg@ARM.com * @return Number of ticks spent servicing the IO request 4059651SAndreas.Sandberg@ARM.com */ 4069651SAndreas.Sandberg@ARM.com virtual Tick handleKvmExitIO(); 4079651SAndreas.Sandberg@ARM.com 4089651SAndreas.Sandberg@ARM.com /** 4099651SAndreas.Sandberg@ARM.com * The guest requested a monitor service using a hypercall 4109651SAndreas.Sandberg@ARM.com * 4119651SAndreas.Sandberg@ARM.com * @return Number of ticks spent servicing the hypercall 4129651SAndreas.Sandberg@ARM.com */ 4139651SAndreas.Sandberg@ARM.com virtual Tick handleKvmExitHypercall(); 4149651SAndreas.Sandberg@ARM.com 4159651SAndreas.Sandberg@ARM.com /** 4169651SAndreas.Sandberg@ARM.com * The guest exited because an interrupt window was requested 4179651SAndreas.Sandberg@ARM.com * 4189651SAndreas.Sandberg@ARM.com * The guest exited because an interrupt window was requested 4199651SAndreas.Sandberg@ARM.com * (request_interrupt_window in the kvm_run structure was set to 1 4209651SAndreas.Sandberg@ARM.com * before calling kvmRun) and it is now ready to receive 4219651SAndreas.Sandberg@ARM.com * 4229651SAndreas.Sandberg@ARM.com * @return Number of ticks spent servicing the IRQ 4239651SAndreas.Sandberg@ARM.com */ 4249651SAndreas.Sandberg@ARM.com virtual Tick handleKvmExitIRQWindowOpen(); 4259651SAndreas.Sandberg@ARM.com 4269651SAndreas.Sandberg@ARM.com /** 4279651SAndreas.Sandberg@ARM.com * An unknown architecture dependent error occurred when starting 4289651SAndreas.Sandberg@ARM.com * the vCPU 4299651SAndreas.Sandberg@ARM.com * 4309651SAndreas.Sandberg@ARM.com * The kvm_run data structure contains the hardware error 4319651SAndreas.Sandberg@ARM.com * code. The defaults behavior of this method just prints the HW 4329651SAndreas.Sandberg@ARM.com * error code and panics. Architecture dependent implementations 4339651SAndreas.Sandberg@ARM.com * may want to override this method to provide better, 4349651SAndreas.Sandberg@ARM.com * hardware-aware, error messages. 4359651SAndreas.Sandberg@ARM.com * 4369651SAndreas.Sandberg@ARM.com * @return Number of ticks delay the next CPU tick 4379651SAndreas.Sandberg@ARM.com */ 4389651SAndreas.Sandberg@ARM.com virtual Tick handleKvmExitUnknown(); 4399651SAndreas.Sandberg@ARM.com 4409651SAndreas.Sandberg@ARM.com /** 4419651SAndreas.Sandberg@ARM.com * An unhandled virtualization exception occured 4429651SAndreas.Sandberg@ARM.com * 4439651SAndreas.Sandberg@ARM.com * Some KVM virtualization drivers return unhandled exceptions to 4449651SAndreas.Sandberg@ARM.com * the user-space monitor. This interface is currently only used 4459651SAndreas.Sandberg@ARM.com * by the Intel VMX KVM driver. 4469651SAndreas.Sandberg@ARM.com * 4479651SAndreas.Sandberg@ARM.com * @return Number of ticks delay the next CPU tick 4489651SAndreas.Sandberg@ARM.com */ 4499651SAndreas.Sandberg@ARM.com virtual Tick handleKvmExitException(); 4509651SAndreas.Sandberg@ARM.com 4519651SAndreas.Sandberg@ARM.com /** 4529651SAndreas.Sandberg@ARM.com * KVM failed to start the virtualized CPU 4539651SAndreas.Sandberg@ARM.com * 4549651SAndreas.Sandberg@ARM.com * The kvm_run data structure contains the hardware-specific error 4559651SAndreas.Sandberg@ARM.com * code. 4569651SAndreas.Sandberg@ARM.com * 4579651SAndreas.Sandberg@ARM.com * @return Number of ticks delay the next CPU tick 4589651SAndreas.Sandberg@ARM.com */ 4599651SAndreas.Sandberg@ARM.com virtual Tick handleKvmExitFailEntry(); 4609651SAndreas.Sandberg@ARM.com /** @} */ 4619651SAndreas.Sandberg@ARM.com 4629651SAndreas.Sandberg@ARM.com /** 4639753Sandreas@sandberg.pp.se * Is the architecture specific code in a state that prevents 4649753Sandreas@sandberg.pp.se * draining? 4659753Sandreas@sandberg.pp.se * 4669753Sandreas@sandberg.pp.se * This method should return false if there are any pending events 4679753Sandreas@sandberg.pp.se * in the guest vCPU that won't be carried over to the gem5 state 4689753Sandreas@sandberg.pp.se * and thus will prevent correct checkpointing or CPU handover. It 4699753Sandreas@sandberg.pp.se * might, for example, check for pending interrupts that have been 4709753Sandreas@sandberg.pp.se * passed to the vCPU but not acknowledged by the OS. Architecures 4719753Sandreas@sandberg.pp.se * implementing this method <i>must</i> override 4729753Sandreas@sandberg.pp.se * kvmRunDrain(). 4739753Sandreas@sandberg.pp.se * 4749753Sandreas@sandberg.pp.se * @see BaseKvmCPU::kvmRunDrain() 4759753Sandreas@sandberg.pp.se * 4769753Sandreas@sandberg.pp.se * @return true if the vCPU is drained, false otherwise. 4779753Sandreas@sandberg.pp.se */ 4789753Sandreas@sandberg.pp.se virtual bool archIsDrained() const { return true; } 4799753Sandreas@sandberg.pp.se 4809753Sandreas@sandberg.pp.se /** 4819651SAndreas.Sandberg@ARM.com * Inject a memory mapped IO request into gem5 4829651SAndreas.Sandberg@ARM.com * 4839651SAndreas.Sandberg@ARM.com * @param paddr Physical address 4849651SAndreas.Sandberg@ARM.com * @param data Pointer to the source/destination buffer 4859651SAndreas.Sandberg@ARM.com * @param size Memory access size 4869651SAndreas.Sandberg@ARM.com * @param write True if write, False if read 4879651SAndreas.Sandberg@ARM.com * @return Number of ticks spent servicing the memory access 4889651SAndreas.Sandberg@ARM.com */ 4899651SAndreas.Sandberg@ARM.com Tick doMMIOAccess(Addr paddr, void *data, int size, bool write); 4909651SAndreas.Sandberg@ARM.com 4919753Sandreas@sandberg.pp.se /** @{ */ 4929753Sandreas@sandberg.pp.se /** 4939753Sandreas@sandberg.pp.se * Set the signal mask used in kvmRun() 4949753Sandreas@sandberg.pp.se * 4959753Sandreas@sandberg.pp.se * This method allows the signal mask of the thread executing 4969753Sandreas@sandberg.pp.se * kvmRun() to be overridden inside the actual system call. This 4979753Sandreas@sandberg.pp.se * allows us to mask timer signals used to force KVM exits while 4989753Sandreas@sandberg.pp.se * in gem5. 4999753Sandreas@sandberg.pp.se * 5009753Sandreas@sandberg.pp.se * The signal mask can be disabled by setting it to NULL. 5019753Sandreas@sandberg.pp.se * 5029753Sandreas@sandberg.pp.se * @param mask Signals to mask 5039753Sandreas@sandberg.pp.se */ 5049753Sandreas@sandberg.pp.se void setSignalMask(const sigset_t *mask); 5059753Sandreas@sandberg.pp.se /** @} */ 5069651SAndreas.Sandberg@ARM.com 5079651SAndreas.Sandberg@ARM.com /** 5089651SAndreas.Sandberg@ARM.com * @addtogroup KvmIoctl 5099651SAndreas.Sandberg@ARM.com * @{ 5109651SAndreas.Sandberg@ARM.com */ 5119651SAndreas.Sandberg@ARM.com /** 5129651SAndreas.Sandberg@ARM.com * vCPU ioctl interface. 5139651SAndreas.Sandberg@ARM.com * 5149651SAndreas.Sandberg@ARM.com * @param request KVM vCPU request 5159651SAndreas.Sandberg@ARM.com * @param p1 Optional request parameter 5169651SAndreas.Sandberg@ARM.com * 5179651SAndreas.Sandberg@ARM.com * @return -1 on error (error number in errno), ioctl dependent 5189651SAndreas.Sandberg@ARM.com * value otherwise. 5199651SAndreas.Sandberg@ARM.com */ 5209651SAndreas.Sandberg@ARM.com int ioctl(int request, long p1) const; 5219651SAndreas.Sandberg@ARM.com int ioctl(int request, void *p1) const { 5229651SAndreas.Sandberg@ARM.com return ioctl(request, (long)p1); 5239651SAndreas.Sandberg@ARM.com } 5249651SAndreas.Sandberg@ARM.com int ioctl(int request) const { 5259651SAndreas.Sandberg@ARM.com return ioctl(request, 0L); 5269651SAndreas.Sandberg@ARM.com } 5279651SAndreas.Sandberg@ARM.com /** @} */ 5289651SAndreas.Sandberg@ARM.com 5299688Sandreas@sandberg.pp.se 5309688Sandreas@sandberg.pp.se /** 5319688Sandreas@sandberg.pp.se * KVM memory port. Uses the default MasterPort behavior, but 5329688Sandreas@sandberg.pp.se * panics on timing accesses. 5339688Sandreas@sandberg.pp.se */ 5349688Sandreas@sandberg.pp.se class KVMCpuPort : public MasterPort 5359688Sandreas@sandberg.pp.se { 5369688Sandreas@sandberg.pp.se 5379688Sandreas@sandberg.pp.se public: 5389688Sandreas@sandberg.pp.se KVMCpuPort(const std::string &_name, BaseKvmCPU *_cpu) 5399688Sandreas@sandberg.pp.se : MasterPort(_name, _cpu) 5409688Sandreas@sandberg.pp.se { } 5419688Sandreas@sandberg.pp.se 5429688Sandreas@sandberg.pp.se protected: 5439688Sandreas@sandberg.pp.se bool recvTimingResp(PacketPtr pkt) 5449688Sandreas@sandberg.pp.se { 5459688Sandreas@sandberg.pp.se panic("The KVM CPU doesn't expect recvTimingResp!\n"); 5469688Sandreas@sandberg.pp.se return true; 5479688Sandreas@sandberg.pp.se } 5489688Sandreas@sandberg.pp.se 5499688Sandreas@sandberg.pp.se void recvRetry() 5509688Sandreas@sandberg.pp.se { 5519688Sandreas@sandberg.pp.se panic("The KVM CPU doesn't expect recvRetry!\n"); 5529688Sandreas@sandberg.pp.se } 5539688Sandreas@sandberg.pp.se 5549688Sandreas@sandberg.pp.se }; 5559688Sandreas@sandberg.pp.se 5569651SAndreas.Sandberg@ARM.com /** Port for data requests */ 5579688Sandreas@sandberg.pp.se KVMCpuPort dataPort; 5589651SAndreas.Sandberg@ARM.com 5599651SAndreas.Sandberg@ARM.com /** Unused dummy port for the instruction interface */ 5609688Sandreas@sandberg.pp.se KVMCpuPort instPort; 5619651SAndreas.Sandberg@ARM.com 5629651SAndreas.Sandberg@ARM.com /** Pre-allocated MMIO memory request */ 5639651SAndreas.Sandberg@ARM.com Request mmio_req; 5649651SAndreas.Sandberg@ARM.com 5659651SAndreas.Sandberg@ARM.com /** 5669651SAndreas.Sandberg@ARM.com * Is the gem5 context dirty? Set to true to force an update of 5679651SAndreas.Sandberg@ARM.com * the KVM vCPU state upon the next call to kvmRun(). 5689651SAndreas.Sandberg@ARM.com */ 5699652SAndreas.Sandberg@ARM.com bool threadContextDirty; 5709652SAndreas.Sandberg@ARM.com 5719652SAndreas.Sandberg@ARM.com /** 5729652SAndreas.Sandberg@ARM.com * Is the KVM state dirty? Set to true to force an update of 5739652SAndreas.Sandberg@ARM.com * the KVM vCPU state upon the next call to kvmRun(). 5749652SAndreas.Sandberg@ARM.com */ 5759652SAndreas.Sandberg@ARM.com bool kvmStateDirty; 5769651SAndreas.Sandberg@ARM.com 5779651SAndreas.Sandberg@ARM.com /** KVM internal ID of the vCPU */ 5789651SAndreas.Sandberg@ARM.com const long vcpuID; 5799651SAndreas.Sandberg@ARM.com 5809651SAndreas.Sandberg@ARM.com private: 5819651SAndreas.Sandberg@ARM.com struct TickEvent : public Event 5829651SAndreas.Sandberg@ARM.com { 5839651SAndreas.Sandberg@ARM.com BaseKvmCPU &cpu; 5849651SAndreas.Sandberg@ARM.com 5859651SAndreas.Sandberg@ARM.com TickEvent(BaseKvmCPU &c) 5869651SAndreas.Sandberg@ARM.com : Event(CPU_Tick_Pri), cpu(c) {} 5879651SAndreas.Sandberg@ARM.com 5889651SAndreas.Sandberg@ARM.com void process() { cpu.tick(); } 5899651SAndreas.Sandberg@ARM.com 5909651SAndreas.Sandberg@ARM.com const char *description() const { 5919651SAndreas.Sandberg@ARM.com return "BaseKvmCPU tick"; 5929651SAndreas.Sandberg@ARM.com } 5939651SAndreas.Sandberg@ARM.com }; 5949651SAndreas.Sandberg@ARM.com 5959651SAndreas.Sandberg@ARM.com /** 5969651SAndreas.Sandberg@ARM.com * Service MMIO requests in the mmioRing. 5979651SAndreas.Sandberg@ARM.com * 5989651SAndreas.Sandberg@ARM.com * 5999651SAndreas.Sandberg@ARM.com * @return Number of ticks spent servicing the MMIO requests in 6009651SAndreas.Sandberg@ARM.com * the MMIO ring buffer 6019651SAndreas.Sandberg@ARM.com */ 6029651SAndreas.Sandberg@ARM.com Tick flushCoalescedMMIO(); 6039651SAndreas.Sandberg@ARM.com 6049651SAndreas.Sandberg@ARM.com /** 6059651SAndreas.Sandberg@ARM.com * Setup a signal handler to catch the timer signal used to 6069651SAndreas.Sandberg@ARM.com * switch back to the monitor. 6079651SAndreas.Sandberg@ARM.com */ 6089651SAndreas.Sandberg@ARM.com void setupSignalHandler(); 6099651SAndreas.Sandberg@ARM.com 6109753Sandreas@sandberg.pp.se /** 6119753Sandreas@sandberg.pp.se * Discard a (potentially) pending signal. 6129753Sandreas@sandberg.pp.se * 6139753Sandreas@sandberg.pp.se * @param signum Signal to discard 6149753Sandreas@sandberg.pp.se * @return true if the signal was pending, false otherwise. 6159753Sandreas@sandberg.pp.se */ 6169753Sandreas@sandberg.pp.se bool discardPendingSignal(int signum) const; 6179753Sandreas@sandberg.pp.se 6189651SAndreas.Sandberg@ARM.com /** Setup hardware performance counters */ 6199651SAndreas.Sandberg@ARM.com void setupCounters(); 6209651SAndreas.Sandberg@ARM.com 6219753Sandreas@sandberg.pp.se /** Try to drain the CPU if a drain is pending */ 6229753Sandreas@sandberg.pp.se bool tryDrain(); 6239753Sandreas@sandberg.pp.se 6249753Sandreas@sandberg.pp.se /** Execute the KVM_RUN ioctl */ 6259753Sandreas@sandberg.pp.se void ioctlRun(); 6269753Sandreas@sandberg.pp.se 6279651SAndreas.Sandberg@ARM.com /** KVM vCPU file descriptor */ 6289651SAndreas.Sandberg@ARM.com int vcpuFD; 6299651SAndreas.Sandberg@ARM.com /** Size of MMAPed kvm_run area */ 6309651SAndreas.Sandberg@ARM.com int vcpuMMapSize; 6319651SAndreas.Sandberg@ARM.com /** 6329651SAndreas.Sandberg@ARM.com * Pointer to the kvm_run structure used to communicate parameters 6339651SAndreas.Sandberg@ARM.com * with KVM. 6349651SAndreas.Sandberg@ARM.com * 6359651SAndreas.Sandberg@ARM.com * @note This is the base pointer of the MMAPed KVM region. The 6369651SAndreas.Sandberg@ARM.com * first page contains the kvm_run structure. Subsequent pages may 6379651SAndreas.Sandberg@ARM.com * contain other data such as the MMIO ring buffer. 6389651SAndreas.Sandberg@ARM.com */ 6399651SAndreas.Sandberg@ARM.com struct kvm_run *_kvmRun; 6409651SAndreas.Sandberg@ARM.com /** 6419651SAndreas.Sandberg@ARM.com * Coalesced MMIO ring buffer. NULL if coalesced MMIO is not 6429651SAndreas.Sandberg@ARM.com * supported. 6439651SAndreas.Sandberg@ARM.com */ 6449651SAndreas.Sandberg@ARM.com struct kvm_coalesced_mmio_ring *mmioRing; 6459651SAndreas.Sandberg@ARM.com /** Cached page size of the host */ 6469651SAndreas.Sandberg@ARM.com const long pageSize; 6479651SAndreas.Sandberg@ARM.com 6489651SAndreas.Sandberg@ARM.com TickEvent tickEvent; 6499651SAndreas.Sandberg@ARM.com 6509651SAndreas.Sandberg@ARM.com /** @{ */ 6519651SAndreas.Sandberg@ARM.com /** Guest performance counters */ 6529651SAndreas.Sandberg@ARM.com PerfKvmCounter hwCycles; 6539651SAndreas.Sandberg@ARM.com PerfKvmCounter hwInstructions; 6549651SAndreas.Sandberg@ARM.com /** @} */ 6559651SAndreas.Sandberg@ARM.com 6569651SAndreas.Sandberg@ARM.com /** 6579655SAndreas.Sandberg@ARM.com * Does the runTimer control the performance counters? 6589655SAndreas.Sandberg@ARM.com * 6599655SAndreas.Sandberg@ARM.com * The run timer will automatically enable and disable performance 6609655SAndreas.Sandberg@ARM.com * counters if a PerfEvent-based timer is used to control KVM 6619655SAndreas.Sandberg@ARM.com * exits. 6629655SAndreas.Sandberg@ARM.com */ 6639655SAndreas.Sandberg@ARM.com bool perfControlledByTimer; 6649655SAndreas.Sandberg@ARM.com 6659655SAndreas.Sandberg@ARM.com /** 6669651SAndreas.Sandberg@ARM.com * Timer used to force execution into the monitor after a 6679651SAndreas.Sandberg@ARM.com * specified number of simulation tick equivalents have executed 6689651SAndreas.Sandberg@ARM.com * in the guest. This counter generates the signal specified by 6699651SAndreas.Sandberg@ARM.com * KVM_TIMER_SIGNAL. 6709651SAndreas.Sandberg@ARM.com */ 6719651SAndreas.Sandberg@ARM.com std::unique_ptr<BaseKvmTimer> runTimer; 6729651SAndreas.Sandberg@ARM.com 6739754Sandreas@sandberg.pp.se /** Host frequency */ 6749754Sandreas@sandberg.pp.se Tick hostFreq; 6759754Sandreas@sandberg.pp.se 6769754Sandreas@sandberg.pp.se /** Host factor as specified in the configuration */ 6779651SAndreas.Sandberg@ARM.com float hostFactor; 6789651SAndreas.Sandberg@ARM.com 6799753Sandreas@sandberg.pp.se /** 6809753Sandreas@sandberg.pp.se * Drain manager to use when signaling drain completion 6819753Sandreas@sandberg.pp.se * 6829753Sandreas@sandberg.pp.se * This pointer is non-NULL when draining and NULL otherwise. 6839753Sandreas@sandberg.pp.se */ 6849753Sandreas@sandberg.pp.se DrainManager *drainManager; 6859753Sandreas@sandberg.pp.se 6869651SAndreas.Sandberg@ARM.com public: 6879651SAndreas.Sandberg@ARM.com /* @{ */ 6889684Sandreas@sandberg.pp.se Stats::Scalar numInsts; 6899651SAndreas.Sandberg@ARM.com Stats::Scalar numVMExits; 6909651SAndreas.Sandberg@ARM.com Stats::Scalar numMMIO; 6919651SAndreas.Sandberg@ARM.com Stats::Scalar numCoalescedMMIO; 6929651SAndreas.Sandberg@ARM.com Stats::Scalar numIO; 6939651SAndreas.Sandberg@ARM.com Stats::Scalar numHalt; 6949651SAndreas.Sandberg@ARM.com Stats::Scalar numInterrupts; 6959651SAndreas.Sandberg@ARM.com Stats::Scalar numHypercalls; 6969651SAndreas.Sandberg@ARM.com /* @} */ 6979752Sandreas@sandberg.pp.se 6989752Sandreas@sandberg.pp.se /** Number of instructions executed by the CPU */ 6999752Sandreas@sandberg.pp.se Counter ctrInsts; 7009651SAndreas.Sandberg@ARM.com}; 7019651SAndreas.Sandberg@ARM.com 7029651SAndreas.Sandberg@ARM.com#endif 703