From patchwork Mon Aug 3 09:05:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudio Fontana X-Patchwork-Id: 277195 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5175EC433E0 for ; Mon, 3 Aug 2020 09:08:50 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 145242068F for ; Mon, 3 Aug 2020 09:08:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 145242068F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:50920 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k2WSg-0001yS-2R for qemu-devel@archiver.kernel.org; Mon, 03 Aug 2020 05:08:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60882) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k2WPe-0006WY-UO for qemu-devel@nongnu.org; Mon, 03 Aug 2020 05:05:42 -0400 Received: from mx2.suse.de ([195.135.220.15]:51544) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k2WPc-0002od-5T for qemu-devel@nongnu.org; Mon, 03 Aug 2020 05:05:42 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 41D04B6EC; Mon, 3 Aug 2020 09:05:53 +0000 (UTC) From: Claudio Fontana To: Paolo Bonzini , =?utf-8?q?Alex_Benn=C3=A9e?= , Peter Maydell , =?utf-8?q?Philippe_Mathieu-?= =?utf-8?b?RGF1ZMOp?= Subject: [RFC v3 2/8] cpus: prepare new CpusAccel cpu accelerator interface Date: Mon, 3 Aug 2020 11:05:27 +0200 Message-Id: <20200803090533.7410-3-cfontana@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20200803090533.7410-1-cfontana@suse.de> References: <20200803090533.7410-1-cfontana@suse.de> Received-SPF: pass client-ip=195.135.220.15; envelope-from=cfontana@suse.de; helo=mx2.suse.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/02 22:52:29 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x (no timestamps) [generic] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Thomas Huth , Eduardo Habkost , Pavel Dovgalyuk , Marcelo Tosatti , qemu-devel@nongnu.org, Markus Armbruster , Roman Bolshakov , Wenchao Wang , Colin Xu , Claudio Fontana , haxm-team@intel.com, Sunil Muthuswamy , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The new interface starts unused, will start being used by the next patches. It provides methods for each accelerator to start a vcpu, kick a vcpu, synchronize state, get cpu virtual clock and elapsed ticks. Signed-off-by: Claudio Fontana --- hw/core/cpu.c | 1 + hw/i386/x86.c | 2 +- include/sysemu/cpu-timers.h | 9 +- include/sysemu/cpus.h | 36 ++++++++ include/sysemu/hw_accel.h | 69 ++------------- softmmu/cpu-timers.c | 9 +- softmmu/cpus.c | 194 ++++++++++++++++++++++++++++++++--------- stubs/Makefile.objs | 2 + stubs/cpu-synchronize-state.c | 15 ++++ stubs/cpus-get-virtual-clock.c | 8 ++ util/qemu-timer.c | 8 +- 11 files changed, 231 insertions(+), 122 deletions(-) create mode 100644 stubs/cpu-synchronize-state.c create mode 100644 stubs/cpus-get-virtual-clock.c diff --git a/hw/core/cpu.c b/hw/core/cpu.c index 594441a150..b389a312df 100644 --- a/hw/core/cpu.c +++ b/hw/core/cpu.c @@ -33,6 +33,7 @@ #include "hw/qdev-properties.h" #include "trace-root.h" #include "qemu/plugin.h" +#include "sysemu/hw_accel.h" CPUInterruptHandler cpu_interrupt_handler; diff --git a/hw/i386/x86.c b/hw/i386/x86.c index 58cf2229d5..00c35bad7e 100644 --- a/hw/i386/x86.c +++ b/hw/i386/x86.c @@ -264,7 +264,7 @@ static long get_file_size(FILE *f) /* TSC handling */ uint64_t cpu_get_tsc(CPUX86State *env) { - return cpu_get_ticks(); + return cpus_get_elapsed_ticks(); } /* IRQ handling */ diff --git a/include/sysemu/cpu-timers.h b/include/sysemu/cpu-timers.h index 07d724672f..cb83cc5584 100644 --- a/include/sysemu/cpu-timers.h +++ b/include/sysemu/cpu-timers.h @@ -64,9 +64,8 @@ void cpu_enable_ticks(void); void cpu_disable_ticks(void); /* - * return the time elapsed in VM between vm_start and vm_stop. Unless - * icount is active, cpu_get_ticks() uses units of the host CPU cycle - * counter. + * return the time elapsed in VM between vm_start and vm_stop. + * cpu_get_ticks() uses units of the host CPU cycle counter. */ int64_t cpu_get_ticks(void); @@ -78,4 +77,8 @@ int64_t cpu_get_clock(void); void qemu_timer_notify_cb(void *opaque, QEMUClockType type); +/* get the VIRTUAL clock and VM elapsed ticks via the cpus accel interface */ +int64_t cpus_get_virtual_clock(void); +int64_t cpus_get_elapsed_ticks(void); + #endif /* SYSEMU_CPU_TIMERS_H */ diff --git a/include/sysemu/cpus.h b/include/sysemu/cpus.h index 149de000a0..db196dd96f 100644 --- a/include/sysemu/cpus.h +++ b/include/sysemu/cpus.h @@ -4,7 +4,43 @@ #include "qemu/timer.h" /* cpus.c */ + +/* CPU execution threads */ + +typedef struct CpusAccel { + void (*create_vcpu_thread)(CPUState *cpu); /* MANDATORY */ + void (*kick_vcpu_thread)(CPUState *cpu); + + void (*synchronize_post_reset)(CPUState *cpu); + void (*synchronize_post_init)(CPUState *cpu); + void (*synchronize_state)(CPUState *cpu); + void (*synchronize_pre_loadvm)(CPUState *cpu); + + int64_t (*get_virtual_clock)(void); + int64_t (*get_elapsed_ticks)(void); +} CpusAccel; + +/* register accel-specific cpus interface implementation */ +void cpus_register_accel(CpusAccel *i); + +/* interface available for cpus accelerator threads */ + +/* For temporary buffers for forming a name */ +#define VCPU_THREAD_NAME_SIZE 16 + +void cpus_kick_thread(CPUState *cpu); +bool cpu_work_list_empty(CPUState *cpu); +bool cpu_thread_is_idle(CPUState *cpu); bool all_cpu_threads_idle(void); +bool cpu_can_run(CPUState *cpu); +void qemu_wait_io_event_common(CPUState *cpu); +void qemu_wait_io_event(CPUState *cpu); +void cpu_thread_signal_created(CPUState *cpu); +void cpu_thread_signal_destroyed(CPUState *cpu); +void cpu_handle_guest_debug(CPUState *cpu); + +/* end interface for cpus accelerator threads */ + bool qemu_in_vcpu_thread(void); void qemu_init_cpu_loop(void); void resume_all_vcpus(void); diff --git a/include/sysemu/hw_accel.h b/include/sysemu/hw_accel.h index e128f8b06b..ffed6192a3 100644 --- a/include/sysemu/hw_accel.h +++ b/include/sysemu/hw_accel.h @@ -1,5 +1,5 @@ /* - * QEMU Hardware accelertors support + * QEMU Hardware accelerators support * * Copyright 2016 Google, Inc. * @@ -17,68 +17,9 @@ #include "sysemu/hvf.h" #include "sysemu/whpx.h" -static inline void cpu_synchronize_state(CPUState *cpu) -{ - if (kvm_enabled()) { - kvm_cpu_synchronize_state(cpu); - } - if (hax_enabled()) { - hax_cpu_synchronize_state(cpu); - } - if (hvf_enabled()) { - hvf_cpu_synchronize_state(cpu); - } - if (whpx_enabled()) { - whpx_cpu_synchronize_state(cpu); - } -} - -static inline void cpu_synchronize_post_reset(CPUState *cpu) -{ - if (kvm_enabled()) { - kvm_cpu_synchronize_post_reset(cpu); - } - if (hax_enabled()) { - hax_cpu_synchronize_post_reset(cpu); - } - if (hvf_enabled()) { - hvf_cpu_synchronize_post_reset(cpu); - } - if (whpx_enabled()) { - whpx_cpu_synchronize_post_reset(cpu); - } -} - -static inline void cpu_synchronize_post_init(CPUState *cpu) -{ - if (kvm_enabled()) { - kvm_cpu_synchronize_post_init(cpu); - } - if (hax_enabled()) { - hax_cpu_synchronize_post_init(cpu); - } - if (hvf_enabled()) { - hvf_cpu_synchronize_post_init(cpu); - } - if (whpx_enabled()) { - whpx_cpu_synchronize_post_init(cpu); - } -} - -static inline void cpu_synchronize_pre_loadvm(CPUState *cpu) -{ - if (kvm_enabled()) { - kvm_cpu_synchronize_pre_loadvm(cpu); - } - if (hax_enabled()) { - hax_cpu_synchronize_pre_loadvm(cpu); - } - if (hvf_enabled()) { - hvf_cpu_synchronize_pre_loadvm(cpu); - } - if (whpx_enabled()) { - whpx_cpu_synchronize_pre_loadvm(cpu); - } -} +void cpu_synchronize_state(CPUState *cpu); +void cpu_synchronize_post_reset(CPUState *cpu); +void cpu_synchronize_post_init(CPUState *cpu); +void cpu_synchronize_pre_loadvm(CPUState *cpu); #endif /* QEMU_HW_ACCEL_H */ diff --git a/softmmu/cpu-timers.c b/softmmu/cpu-timers.c index 64addb315d..3e1da79735 100644 --- a/softmmu/cpu-timers.c +++ b/softmmu/cpu-timers.c @@ -61,18 +61,13 @@ static int64_t cpu_get_ticks_locked(void) } /* - * return the time elapsed in VM between vm_start and vm_stop. Unless - * icount is active, cpu_get_ticks() uses units of the host CPU cycle - * counter. + * return the time elapsed in VM between vm_start and vm_stop. + * cpu_get_ticks() uses units of the host CPU cycle counter. */ int64_t cpu_get_ticks(void) { int64_t ticks; - if (icount_enabled()) { - return icount_get(); - } - qemu_spin_lock(&timers_state.vm_clock_lock); ticks = cpu_get_ticks_locked(); qemu_spin_unlock(&timers_state.vm_clock_lock); diff --git a/softmmu/cpus.c b/softmmu/cpus.c index 54fdb2761c..bad6302ca3 100644 --- a/softmmu/cpus.c +++ b/softmmu/cpus.c @@ -87,7 +87,7 @@ bool cpu_is_stopped(CPUState *cpu) return cpu->stopped || !runstate_is_running(); } -static inline bool cpu_work_list_empty(CPUState *cpu) +bool cpu_work_list_empty(CPUState *cpu) { bool ret; @@ -97,7 +97,7 @@ static inline bool cpu_work_list_empty(CPUState *cpu) return ret; } -static bool cpu_thread_is_idle(CPUState *cpu) +bool cpu_thread_is_idle(CPUState *cpu) { if (cpu->stop || !cpu_work_list_empty(cpu)) { return false; @@ -215,6 +215,11 @@ void hw_error(const char *fmt, ...) abort(); } +/* + * The chosen accelerator is supposed to register this. + */ +static CpusAccel *cpus_accel; + void cpu_synchronize_all_states(void) { CPUState *cpu; @@ -251,6 +256,102 @@ void cpu_synchronize_all_pre_loadvm(void) } } +void cpu_synchronize_state(CPUState *cpu) +{ + if (cpus_accel && cpus_accel->synchronize_state) { + cpus_accel->synchronize_state(cpu); + } + if (kvm_enabled()) { + kvm_cpu_synchronize_state(cpu); + } + if (hax_enabled()) { + hax_cpu_synchronize_state(cpu); + } + if (whpx_enabled()) { + whpx_cpu_synchronize_state(cpu); + } +} + +void cpu_synchronize_post_reset(CPUState *cpu) +{ + if (cpus_accel && cpus_accel->synchronize_post_reset) { + cpus_accel->synchronize_post_reset(cpu); + } + if (kvm_enabled()) { + kvm_cpu_synchronize_post_reset(cpu); + } + if (hax_enabled()) { + hax_cpu_synchronize_post_reset(cpu); + } + if (whpx_enabled()) { + whpx_cpu_synchronize_post_reset(cpu); + } +} + +void cpu_synchronize_post_init(CPUState *cpu) +{ + if (cpus_accel && cpus_accel->synchronize_post_init) { + cpus_accel->synchronize_post_init(cpu); + } + if (kvm_enabled()) { + kvm_cpu_synchronize_post_init(cpu); + } + if (hax_enabled()) { + hax_cpu_synchronize_post_init(cpu); + } + if (whpx_enabled()) { + whpx_cpu_synchronize_post_init(cpu); + } +} + +void cpu_synchronize_pre_loadvm(CPUState *cpu) +{ + if (cpus_accel && cpus_accel->synchronize_pre_loadvm) { + cpus_accel->synchronize_pre_loadvm(cpu); + } + if (kvm_enabled()) { + kvm_cpu_synchronize_pre_loadvm(cpu); + } + if (hax_enabled()) { + hax_cpu_synchronize_pre_loadvm(cpu); + } + if (hvf_enabled()) { + hvf_cpu_synchronize_pre_loadvm(cpu); + } + if (whpx_enabled()) { + whpx_cpu_synchronize_pre_loadvm(cpu); + } +} + +int64_t cpus_get_virtual_clock(void) +{ + if (cpus_accel && cpus_accel->get_virtual_clock) { + return cpus_accel->get_virtual_clock(); + } + if (icount_enabled()) { + return icount_get(); + } else if (qtest_enabled()) { /* for qtest_clock_warp */ + return qtest_get_virtual_clock(); + } + return cpu_get_clock(); +} + +/* + * return the time elapsed in VM between vm_start and vm_stop. Unless + * icount is active, cpu_get_ticks() uses units of the host CPU cycle + * counter. + */ +int64_t cpus_get_elapsed_ticks(void) +{ + if (cpus_accel && cpus_accel->get_elapsed_ticks) { + return cpus_accel->get_elapsed_ticks(); + } + if (icount_enabled()) { + return icount_get(); + } + return cpu_get_ticks(); +} + static int do_vm_stop(RunState state, bool send_stop) { int ret = 0; @@ -279,7 +380,7 @@ int vm_shutdown(void) return do_vm_stop(RUN_STATE_SHUTDOWN, false); } -static bool cpu_can_run(CPUState *cpu) +bool cpu_can_run(CPUState *cpu) { if (cpu->stop) { return false; @@ -290,7 +391,7 @@ static bool cpu_can_run(CPUState *cpu) return true; } -static void cpu_handle_guest_debug(CPUState *cpu) +void cpu_handle_guest_debug(CPUState *cpu) { gdb_set_stop_cpu(cpu); qemu_system_debug_request(); @@ -396,7 +497,7 @@ static void qemu_cpu_stop(CPUState *cpu, bool exit) qemu_cond_broadcast(&qemu_pause_cond); } -static void qemu_wait_io_event_common(CPUState *cpu) +void qemu_wait_io_event_common(CPUState *cpu) { atomic_mb_set(&cpu->thread_kicked, false); if (cpu->stop) { @@ -421,7 +522,7 @@ static void qemu_tcg_rr_wait_io_event(void) } } -static void qemu_wait_io_event(CPUState *cpu) +void qemu_wait_io_event(CPUState *cpu) { bool slept = false; @@ -437,7 +538,8 @@ static void qemu_wait_io_event(CPUState *cpu) } #ifdef _WIN32 - /* Eat dummy APC queued by qemu_cpu_kick_thread. */ + /* Eat dummy APC queued by qemu_cpu_kick_thread. */ + /* NB!!! Should not this be if (hax_enabled)? Is this wrong for whpx? */ if (!tcg_enabled()) { SleepEx(0, TRUE); } @@ -467,8 +569,7 @@ static void *qemu_kvm_cpu_thread_fn(void *arg) kvm_init_cpu_signals(cpu); /* signal CPU creation */ - cpu->created = true; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_created(cpu); qemu_guest_random_seed_thread_part2(cpu->random_seed); do { @@ -482,8 +583,7 @@ static void *qemu_kvm_cpu_thread_fn(void *arg) } while (!cpu->unplug || cpu_can_run(cpu)); qemu_kvm_destroy_vcpu(cpu); - cpu->created = false; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_destroyed(cpu); qemu_mutex_unlock_iothread(); rcu_unregister_thread(); return NULL; @@ -511,8 +611,7 @@ static void *qemu_dummy_cpu_thread_fn(void *arg) sigaddset(&waitset, SIG_IPI); /* signal CPU creation */ - cpu->created = true; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_created(cpu); qemu_guest_random_seed_thread_part2(cpu->random_seed); do { @@ -660,8 +759,7 @@ static void deal_with_unplugged_cpus(void) CPU_FOREACH(cpu) { if (cpu->unplug && !cpu_can_run(cpu)) { qemu_tcg_destroy_vcpu(cpu); - cpu->created = false; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_destroyed(cpu); break; } } @@ -688,9 +786,8 @@ static void *qemu_tcg_rr_cpu_thread_fn(void *arg) qemu_thread_get_self(cpu->thread); cpu->thread_id = qemu_get_thread_id(); - cpu->created = true; cpu->can_do_io = 1; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_created(cpu); qemu_guest_random_seed_thread_part2(cpu->random_seed); /* wait for initial kick-off after machine start */ @@ -800,11 +897,9 @@ static void *qemu_hax_cpu_thread_fn(void *arg) qemu_thread_get_self(cpu->thread); cpu->thread_id = qemu_get_thread_id(); - cpu->created = true; current_cpu = cpu; - hax_init_vcpu(cpu); - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_created(cpu); qemu_guest_random_seed_thread_part2(cpu->random_seed); do { @@ -843,8 +938,7 @@ static void *qemu_hvf_cpu_thread_fn(void *arg) hvf_init_vcpu(cpu); /* signal CPU creation */ - cpu->created = true; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_created(cpu); qemu_guest_random_seed_thread_part2(cpu->random_seed); do { @@ -858,8 +952,7 @@ static void *qemu_hvf_cpu_thread_fn(void *arg) } while (!cpu->unplug || cpu_can_run(cpu)); hvf_vcpu_destroy(cpu); - cpu->created = false; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_destroyed(cpu); qemu_mutex_unlock_iothread(); rcu_unregister_thread(); return NULL; @@ -884,8 +977,7 @@ static void *qemu_whpx_cpu_thread_fn(void *arg) } /* signal CPU creation */ - cpu->created = true; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_created(cpu); qemu_guest_random_seed_thread_part2(cpu->random_seed); do { @@ -902,8 +994,7 @@ static void *qemu_whpx_cpu_thread_fn(void *arg) } while (!cpu->unplug || cpu_can_run(cpu)); whpx_destroy_vcpu(cpu); - cpu->created = false; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_destroyed(cpu); qemu_mutex_unlock_iothread(); rcu_unregister_thread(); return NULL; @@ -936,10 +1027,9 @@ static void *qemu_tcg_cpu_thread_fn(void *arg) qemu_thread_get_self(cpu->thread); cpu->thread_id = qemu_get_thread_id(); - cpu->created = true; cpu->can_do_io = 1; current_cpu = cpu; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_created(cpu); qemu_guest_random_seed_thread_part2(cpu->random_seed); /* process any pending work */ @@ -980,14 +1070,13 @@ static void *qemu_tcg_cpu_thread_fn(void *arg) } while (!cpu->unplug || cpu_can_run(cpu)); qemu_tcg_destroy_vcpu(cpu); - cpu->created = false; - qemu_cond_signal(&qemu_cpu_cond); + cpu_thread_signal_destroyed(cpu); qemu_mutex_unlock_iothread(); rcu_unregister_thread(); return NULL; } -static void qemu_cpu_kick_thread(CPUState *cpu) +void cpus_kick_thread(CPUState *cpu) { #ifndef _WIN32 int err; @@ -1017,7 +1106,10 @@ static void qemu_cpu_kick_thread(CPUState *cpu) void qemu_cpu_kick(CPUState *cpu) { qemu_cond_broadcast(cpu->halt_cond); - if (tcg_enabled()) { + + if (cpus_accel && cpus_accel->kick_vcpu_thread) { + cpus_accel->kick_vcpu_thread(cpu); + } else if (tcg_enabled()) { if (qemu_tcg_mttcg_enabled()) { cpu_exit(cpu); } else { @@ -1031,14 +1123,14 @@ void qemu_cpu_kick(CPUState *cpu) */ cpu->exit_request = 1; } - qemu_cpu_kick_thread(cpu); + cpus_kick_thread(cpu); } } void qemu_cpu_kick_self(void) { assert(current_cpu); - qemu_cpu_kick_thread(current_cpu); + cpus_kick_thread(current_cpu); } bool qemu_cpu_is_self(CPUState *cpu) @@ -1088,6 +1180,21 @@ void qemu_cond_timedwait_iothread(QemuCond *cond, int ms) qemu_cond_timedwait(cond, &qemu_global_mutex, ms); } +/* signal CPU creation */ +void cpu_thread_signal_created(CPUState *cpu) +{ + cpu->created = true; + qemu_cond_signal(&qemu_cpu_cond); +} + +/* signal CPU destruction */ +void cpu_thread_signal_destroyed(CPUState *cpu) +{ + cpu->created = false; + qemu_cond_signal(&qemu_cpu_cond); +} + + static bool all_vcpus_paused(void) { CPUState *cpu; @@ -1163,9 +1270,6 @@ void cpu_remove_sync(CPUState *cpu) qemu_mutex_lock_iothread(); } -/* For temporary buffers for forming a name */ -#define VCPU_THREAD_NAME_SIZE 16 - static void qemu_tcg_init_vcpu(CPUState *cpu) { char thread_name[VCPU_THREAD_NAME_SIZE]; @@ -1286,6 +1390,13 @@ static void qemu_whpx_start_vcpu(CPUState *cpu) #endif } +void cpus_register_accel(CpusAccel *ca) +{ + assert(ca != NULL); + assert(ca->create_vcpu_thread != NULL); /* mandatory */ + cpus_accel = ca; +} + static void qemu_dummy_start_vcpu(CPUState *cpu) { char thread_name[VCPU_THREAD_NAME_SIZE]; @@ -1316,7 +1427,10 @@ void qemu_init_vcpu(CPUState *cpu) cpu_address_space_init(cpu, 0, "cpu-memory", cpu->memory); } - if (kvm_enabled()) { + if (cpus_accel) { + /* accelerator already implements the CpusAccel interface */ + cpus_accel->create_vcpu_thread(cpu); + } else if (kvm_enabled()) { qemu_kvm_start_vcpu(cpu); } else if (hax_enabled()) { qemu_hax_start_vcpu(cpu); diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs index e97ad407fa..16345eec43 100644 --- a/stubs/Makefile.objs +++ b/stubs/Makefile.objs @@ -1,6 +1,7 @@ stub-obj-y += blk-commit-all.o stub-obj-y += cmos.o stub-obj-y += cpu-get-clock.o +stub-obj-y += cpus-get-virtual-clock.o stub-obj-y += qemu-timer-notify-cb.o stub-obj-y += icount.o stub-obj-y += dump.o @@ -28,6 +29,7 @@ stub-obj-y += trace-control.o stub-obj-y += vmgenid.o stub-obj-y += vmstate.o stub-obj-$(CONFIG_SOFTMMU) += win32-kbd-hook.o +stub-obj-y += cpu-synchronize-state.o ####################################################################### # code used by both qemu system emulation and qemu-img diff --git a/stubs/cpu-synchronize-state.c b/stubs/cpu-synchronize-state.c new file mode 100644 index 0000000000..3112fe439d --- /dev/null +++ b/stubs/cpu-synchronize-state.c @@ -0,0 +1,15 @@ +#include "qemu/osdep.h" +#include "sysemu/hw_accel.h" + +void cpu_synchronize_state(CPUState *cpu) +{ +} +void cpu_synchronize_post_reset(CPUState *cpu) +{ +} +void cpu_synchronize_post_init(CPUState *cpu) +{ +} +void cpu_synchronize_pre_loadvm(CPUState *cpu) +{ +} diff --git a/stubs/cpus-get-virtual-clock.c b/stubs/cpus-get-virtual-clock.c new file mode 100644 index 0000000000..fd447d53f3 --- /dev/null +++ b/stubs/cpus-get-virtual-clock.c @@ -0,0 +1,8 @@ +#include "qemu/osdep.h" +#include "sysemu/cpu-timers.h" +#include "qemu/main-loop.h" + +int64_t cpus_get_virtual_clock(void) +{ + return cpu_get_clock(); +} diff --git a/util/qemu-timer.c b/util/qemu-timer.c index db51e68f25..50b325c65b 100644 --- a/util/qemu-timer.c +++ b/util/qemu-timer.c @@ -635,13 +635,7 @@ int64_t qemu_clock_get_ns(QEMUClockType type) return get_clock(); default: case QEMU_CLOCK_VIRTUAL: - if (icount_enabled()) { - return icount_get(); - } else if (qtest_enabled()) { /* for qtest_clock_warp */ - return qtest_get_virtual_clock(); - } else { - return cpu_get_clock(); - } + return cpus_get_virtual_clock(); case QEMU_CLOCK_HOST: return REPLAY_CLOCK(REPLAY_CLOCK_HOST, get_clock_realtime()); case QEMU_CLOCK_VIRTUAL_RT: From patchwork Mon Aug 3 09:05:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudio Fontana X-Patchwork-Id: 277196 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNWANTED_LANGUAGE_BODY, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0DED0C433E0 for ; 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Mon, 03 Aug 2020 05:05:43 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 0473AB728; Mon, 3 Aug 2020 09:05:55 +0000 (UTC) From: Claudio Fontana To: Paolo Bonzini , =?utf-8?q?Alex_Benn=C3=A9e?= , Peter Maydell , =?utf-8?q?Philippe_Mathieu-?= =?utf-8?b?RGF1ZMOp?= Subject: [RFC v3 4/8] cpus: extract out qtest-specific code to accel/qtest Date: Mon, 3 Aug 2020 11:05:29 +0200 Message-Id: <20200803090533.7410-5-cfontana@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20200803090533.7410-1-cfontana@suse.de> References: <20200803090533.7410-1-cfontana@suse.de> Received-SPF: pass client-ip=195.135.220.15; envelope-from=cfontana@suse.de; helo=mx2.suse.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/02 22:52:29 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x (no timestamps) [generic] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Thomas Huth , Eduardo Habkost , Pavel Dovgalyuk , Marcelo Tosatti , qemu-devel@nongnu.org, Markus Armbruster , Roman Bolshakov , Wenchao Wang , Colin Xu , Claudio Fontana , haxm-team@intel.com, Sunil Muthuswamy , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" register a "CpusAccel" interface for qtest as well. Signed-off-by: Claudio Fontana --- MAINTAINERS | 2 +- accel/Makefile.objs | 2 +- accel/qtest/Makefile.objs | 2 ++ accel/qtest/qtest-cpus.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++ accel/qtest/qtest-cpus.h | 17 +++++++++ accel/{ => qtest}/qtest.c | 7 ++++ softmmu/cpus.c | 64 +-------------------------------- 7 files changed, 120 insertions(+), 65 deletions(-) create mode 100644 accel/qtest/Makefile.objs create mode 100644 accel/qtest/qtest-cpus.c create mode 100644 accel/qtest/qtest-cpus.h rename accel/{ => qtest}/qtest.c (86%) diff --git a/MAINTAINERS b/MAINTAINERS index 7dcc3ef4c8..f8bac8cb64 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2442,7 +2442,7 @@ M: Laurent Vivier R: Paolo Bonzini S: Maintained F: softmmu/qtest.c -F: accel/qtest.c +F: accel/qtest/ F: tests/qtest/ X: tests/qtest/bios-tables-test-allowed-diff.h diff --git a/accel/Makefile.objs b/accel/Makefile.objs index ff72f0d030..c5e58eb53d 100644 --- a/accel/Makefile.objs +++ b/accel/Makefile.objs @@ -1,5 +1,5 @@ common-obj-$(CONFIG_SOFTMMU) += accel.o -obj-$(call land,$(CONFIG_SOFTMMU),$(CONFIG_POSIX)) += qtest.o +obj-$(call land,$(CONFIG_SOFTMMU),$(CONFIG_POSIX)) += qtest/ obj-$(CONFIG_KVM) += kvm/ obj-$(CONFIG_TCG) += tcg/ obj-$(CONFIG_XEN) += xen/ diff --git a/accel/qtest/Makefile.objs b/accel/qtest/Makefile.objs new file mode 100644 index 0000000000..627014200e --- /dev/null +++ b/accel/qtest/Makefile.objs @@ -0,0 +1,2 @@ +obj-y += qtest.o +obj-y += qtest-cpus.o diff --git a/accel/qtest/qtest-cpus.c b/accel/qtest/qtest-cpus.c new file mode 100644 index 0000000000..ac10976ac6 --- /dev/null +++ b/accel/qtest/qtest-cpus.c @@ -0,0 +1,91 @@ +/* + * QTest accelerator code + * + * Copyright IBM, Corp. 2011 + * + * Authors: + * Anthony Liguori + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "qemu/rcu.h" +#include "qapi/error.h" +#include "qemu/module.h" +#include "qemu/option.h" +#include "qemu/config-file.h" +#include "sysemu/accel.h" +#include "sysemu/qtest.h" +#include "sysemu/cpus.h" +#include "sysemu/cpu-timers.h" +#include "qemu/guest-random.h" +#include "qemu/main-loop.h" +#include "hw/core/cpu.h" + +#include "qtest-cpus.h" + +static void *qtest_cpu_thread_fn(void *arg) +{ +#ifdef _WIN32 + error_report("qtest is not supported under Windows"); + exit(1); +#else + CPUState *cpu = arg; + sigset_t waitset; + int r; + + rcu_register_thread(); + + qemu_mutex_lock_iothread(); + qemu_thread_get_self(cpu->thread); + cpu->thread_id = qemu_get_thread_id(); + cpu->can_do_io = 1; + current_cpu = cpu; + + sigemptyset(&waitset); + sigaddset(&waitset, SIG_IPI); + + /* signal CPU creation */ + cpu_thread_signal_created(cpu); + qemu_guest_random_seed_thread_part2(cpu->random_seed); + + do { + qemu_mutex_unlock_iothread(); + do { + int sig; + r = sigwait(&waitset, &sig); + } while (r == -1 && (errno == EAGAIN || errno == EINTR)); + if (r == -1) { + perror("sigwait"); + exit(1); + } + qemu_mutex_lock_iothread(); + qemu_wait_io_event(cpu); + } while (!cpu->unplug); + + qemu_mutex_unlock_iothread(); + rcu_unregister_thread(); + return NULL; +#endif +} + +static void qtest_start_vcpu_thread(CPUState *cpu) +{ + char thread_name[VCPU_THREAD_NAME_SIZE]; + + cpu->thread = g_malloc0(sizeof(QemuThread)); + cpu->halt_cond = g_malloc0(sizeof(QemuCond)); + qemu_cond_init(cpu->halt_cond); + snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/DUMMY", + cpu->cpu_index); + qemu_thread_create(cpu->thread, thread_name, qtest_cpu_thread_fn, cpu, + QEMU_THREAD_JOINABLE); +} + +CpusAccel qtest_cpus = { + .create_vcpu_thread = qtest_start_vcpu_thread, + .get_virtual_clock = qtest_get_virtual_clock, +}; diff --git a/accel/qtest/qtest-cpus.h b/accel/qtest/qtest-cpus.h new file mode 100644 index 0000000000..c1fab96b9e --- /dev/null +++ b/accel/qtest/qtest-cpus.h @@ -0,0 +1,17 @@ +/* + * Accelerator CPUS Interface + * + * Copyright 2020 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QTEST_CPUS_H +#define QTEST_CPUS_H + +#include "sysemu/cpus.h" + +extern CpusAccel qtest_cpus; + +#endif /* QTEST_CPUS_H */ diff --git a/accel/qtest.c b/accel/qtest/qtest.c similarity index 86% rename from accel/qtest.c rename to accel/qtest/qtest.c index 119d0f16a4..537e8b449c 100644 --- a/accel/qtest.c +++ b/accel/qtest/qtest.c @@ -12,6 +12,7 @@ */ #include "qemu/osdep.h" +#include "qemu/rcu.h" #include "qapi/error.h" #include "qemu/module.h" #include "qemu/option.h" @@ -20,9 +21,15 @@ #include "sysemu/qtest.h" #include "sysemu/cpus.h" #include "sysemu/cpu-timers.h" +#include "qemu/guest-random.h" +#include "qemu/main-loop.h" +#include "hw/core/cpu.h" + +#include "qtest-cpus.h" static int qtest_init_accel(MachineState *ms) { + cpus_register_accel(&qtest_cpus); return 0; } diff --git a/softmmu/cpus.c b/softmmu/cpus.c index eaed6749e3..9b4c59f6f5 100644 --- a/softmmu/cpus.c +++ b/softmmu/cpus.c @@ -40,7 +40,6 @@ #include "qemu/thread.h" #include "qemu/plugin.h" #include "sysemu/cpus.h" -#include "sysemu/qtest.h" #include "qemu/main-loop.h" #include "qemu/option.h" #include "qemu/bitmap.h" @@ -247,9 +246,6 @@ int64_t cpus_get_virtual_clock(void) if (cpus_accel && cpus_accel->get_virtual_clock) { return cpus_accel->get_virtual_clock(); } - if (qtest_enabled()) { /* for qtest_clock_warp */ - return qtest_get_virtual_clock(); - } return cpu_get_clock(); } @@ -483,51 +479,6 @@ static void *qemu_kvm_cpu_thread_fn(void *arg) return NULL; } -static void *qemu_dummy_cpu_thread_fn(void *arg) -{ -#ifdef _WIN32 - error_report("qtest is not supported under Windows"); - exit(1); -#else - CPUState *cpu = arg; - sigset_t waitset; - int r; - - rcu_register_thread(); - - qemu_mutex_lock_iothread(); - qemu_thread_get_self(cpu->thread); - cpu->thread_id = qemu_get_thread_id(); - cpu->can_do_io = 1; - current_cpu = cpu; - - sigemptyset(&waitset); - sigaddset(&waitset, SIG_IPI); - - /* signal CPU creation */ - cpu_thread_signal_created(cpu); - qemu_guest_random_seed_thread_part2(cpu->random_seed); - - do { - qemu_mutex_unlock_iothread(); - do { - int sig; - r = sigwait(&waitset, &sig); - } while (r == -1 && (errno == EAGAIN || errno == EINTR)); - if (r == -1) { - perror("sigwait"); - exit(1); - } - qemu_mutex_lock_iothread(); - qemu_wait_io_event(cpu); - } while (!cpu->unplug); - - qemu_mutex_unlock_iothread(); - rcu_unregister_thread(); - return NULL; -#endif -} - static void *qemu_hax_cpu_thread_fn(void *arg) { CPUState *cpu = arg; @@ -905,19 +856,6 @@ void cpus_register_accel(CpusAccel *ca) cpus_accel = ca; } -static void qemu_dummy_start_vcpu(CPUState *cpu) -{ - char thread_name[VCPU_THREAD_NAME_SIZE]; - - cpu->thread = g_malloc0(sizeof(QemuThread)); - cpu->halt_cond = g_malloc0(sizeof(QemuCond)); - qemu_cond_init(cpu->halt_cond); - snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/DUMMY", - cpu->cpu_index); - qemu_thread_create(cpu->thread, thread_name, qemu_dummy_cpu_thread_fn, cpu, - QEMU_THREAD_JOINABLE); -} - void qemu_init_vcpu(CPUState *cpu) { MachineState *ms = MACHINE(qdev_get_machine()); @@ -947,7 +885,7 @@ void qemu_init_vcpu(CPUState *cpu) } else if (whpx_enabled()) { qemu_whpx_start_vcpu(cpu); } else { - qemu_dummy_start_vcpu(cpu); + assert(0); } while (!cpu->created) { From patchwork Mon Aug 3 09:05:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudio Fontana X-Patchwork-Id: 277194 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A3619C433DF for ; Mon, 3 Aug 2020 09:10:35 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 752DD206E2 for ; Mon, 3 Aug 2020 09:10:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 752DD206E2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:57808 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k2WUN-0004uU-EL for qemu-devel@archiver.kernel.org; Mon, 03 Aug 2020 05:10:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60920) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k2WPg-0006Y4-Vg for qemu-devel@nongnu.org; Mon, 03 Aug 2020 05:05:45 -0400 Received: from mx2.suse.de ([195.135.220.15]:52048) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k2WPe-0002rL-NU for qemu-devel@nongnu.org; Mon, 03 Aug 2020 05:05:44 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id CBD09B745; Mon, 3 Aug 2020 09:05:55 +0000 (UTC) From: Claudio Fontana To: Paolo Bonzini , =?utf-8?q?Alex_Benn=C3=A9e?= , Peter Maydell , =?utf-8?q?Philippe_Mathieu-?= =?utf-8?b?RGF1ZMOp?= Subject: [RFC v3 5/8] cpus: extract out kvm-specific code to accel/kvm Date: Mon, 3 Aug 2020 11:05:30 +0200 Message-Id: <20200803090533.7410-6-cfontana@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20200803090533.7410-1-cfontana@suse.de> References: <20200803090533.7410-1-cfontana@suse.de> Received-SPF: pass client-ip=195.135.220.15; envelope-from=cfontana@suse.de; helo=mx2.suse.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/02 22:52:29 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x (no timestamps) [generic] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Thomas Huth , Eduardo Habkost , Pavel Dovgalyuk , Marcelo Tosatti , qemu-devel@nongnu.org, Markus Armbruster , Roman Bolshakov , Wenchao Wang , Colin Xu , Claudio Fontana , haxm-team@intel.com, Sunil Muthuswamy , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" register a "CpusAccel" interface for KVM as well. Signed-off-by: Claudio Fontana --- accel/kvm/Makefile.objs | 2 ++ accel/kvm/kvm-all.c | 14 +++++++- accel/kvm/kvm-cpus.c | 88 +++++++++++++++++++++++++++++++++++++++++++++++++ accel/kvm/kvm-cpus.h | 17 ++++++++++ accel/stubs/kvm-stub.c | 3 +- include/sysemu/kvm.h | 2 +- softmmu/cpus.c | 77 ------------------------------------------- 7 files changed, 122 insertions(+), 81 deletions(-) create mode 100644 accel/kvm/kvm-cpus.c create mode 100644 accel/kvm/kvm-cpus.h diff --git a/accel/kvm/Makefile.objs b/accel/kvm/Makefile.objs index fdfa481578..ce0f492b8d 100644 --- a/accel/kvm/Makefile.objs +++ b/accel/kvm/Makefile.objs @@ -1,2 +1,4 @@ obj-y += kvm-all.o +obj-y += kvm-cpus.o + obj-$(call lnot,$(CONFIG_SEV)) += sev-stub.o diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 63ef6af9a1..fbd82cb444 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -44,6 +44,9 @@ #include "qapi/qapi-types-common.h" #include "qapi/qapi-visit-common.h" #include "sysemu/reset.h" +#include "qemu/guest-random.h" +#include "sysemu/hw_accel.h" +#include "kvm-cpus.h" #include "hw/boards.h" @@ -378,7 +381,7 @@ err: return ret; } -int kvm_destroy_vcpu(CPUState *cpu) +static int do_kvm_destroy_vcpu(CPUState *cpu) { KVMState *s = kvm_state; long mmap_size; @@ -412,6 +415,14 @@ err: return ret; } +void kvm_destroy_vcpu(CPUState *cpu) +{ + if (do_kvm_destroy_vcpu(cpu) < 0) { + error_report("kvm_destroy_vcpu failed"); + exit(EXIT_FAILURE); + } +} + static int kvm_get_vcpu(KVMState *s, unsigned long vcpu_id) { struct KVMParkedVcpu *cpu; @@ -2232,6 +2243,7 @@ static int kvm_init(MachineState *ms) assert(!ret); } + cpus_register_accel(&kvm_cpus); return 0; err: diff --git a/accel/kvm/kvm-cpus.c b/accel/kvm/kvm-cpus.c new file mode 100644 index 0000000000..7866a2e9c3 --- /dev/null +++ b/accel/kvm/kvm-cpus.c @@ -0,0 +1,88 @@ +/* + * QEMU KVM support + * + * Copyright IBM, Corp. 2008 + * Red Hat, Inc. 2008 + * + * Authors: + * Anthony Liguori + * Glauber Costa + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "qemu/error-report.h" +#include "qemu/main-loop.h" +#include "sysemu/kvm_int.h" +#include "sysemu/runstate.h" +#include "sysemu/cpus.h" +#include "qemu/guest-random.h" + +#include "kvm-cpus.h" + +static void *kvm_vcpu_thread_fn(void *arg) +{ + CPUState *cpu = arg; + int r; + + rcu_register_thread(); + + qemu_mutex_lock_iothread(); + qemu_thread_get_self(cpu->thread); + cpu->thread_id = qemu_get_thread_id(); + cpu->can_do_io = 1; + current_cpu = cpu; + + r = kvm_init_vcpu(cpu); + if (r < 0) { + error_report("kvm_init_vcpu failed: %s", strerror(-r)); + exit(1); + } + + kvm_init_cpu_signals(cpu); + + /* signal CPU creation */ + cpu_thread_signal_created(cpu); + qemu_guest_random_seed_thread_part2(cpu->random_seed); + + do { + if (cpu_can_run(cpu)) { + r = kvm_cpu_exec(cpu); + if (r == EXCP_DEBUG) { + cpu_handle_guest_debug(cpu); + } + } + qemu_wait_io_event(cpu); + } while (!cpu->unplug || cpu_can_run(cpu)); + + kvm_destroy_vcpu(cpu); + cpu_thread_signal_destroyed(cpu); + qemu_mutex_unlock_iothread(); + rcu_unregister_thread(); + return NULL; +} + +static void kvm_start_vcpu_thread(CPUState *cpu) +{ + char thread_name[VCPU_THREAD_NAME_SIZE]; + + cpu->thread = g_malloc0(sizeof(QemuThread)); + cpu->halt_cond = g_malloc0(sizeof(QemuCond)); + qemu_cond_init(cpu->halt_cond); + snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/KVM", + cpu->cpu_index); + qemu_thread_create(cpu->thread, thread_name, kvm_vcpu_thread_fn, + cpu, QEMU_THREAD_JOINABLE); +} + +CpusAccel kvm_cpus = { + .create_vcpu_thread = kvm_start_vcpu_thread, + + .synchronize_post_reset = kvm_cpu_synchronize_post_reset, + .synchronize_post_init = kvm_cpu_synchronize_post_init, + .synchronize_state = kvm_cpu_synchronize_state, + .synchronize_pre_loadvm = kvm_cpu_synchronize_pre_loadvm, +}; diff --git a/accel/kvm/kvm-cpus.h b/accel/kvm/kvm-cpus.h new file mode 100644 index 0000000000..62fbc911d9 --- /dev/null +++ b/accel/kvm/kvm-cpus.h @@ -0,0 +1,17 @@ +/* + * Accelerator CPUS Interface + * + * Copyright 2020 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef KVM_CPUS_H +#define KVM_CPUS_H + +#include "sysemu/cpus.h" + +extern CpusAccel kvm_cpus; + +#endif /* KVM_CPUS_H */ diff --git a/accel/stubs/kvm-stub.c b/accel/stubs/kvm-stub.c index 82f118d2df..69f8a842da 100644 --- a/accel/stubs/kvm-stub.c +++ b/accel/stubs/kvm-stub.c @@ -32,9 +32,8 @@ bool kvm_readonly_mem_allowed; bool kvm_ioeventfd_any_length_allowed; bool kvm_msi_use_devid; -int kvm_destroy_vcpu(CPUState *cpu) +void kvm_destroy_vcpu(CPUState *cpu) { - return -ENOSYS; } int kvm_init_vcpu(CPUState *cpu) diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index b4174d941c..7a5f973b6f 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -218,7 +218,7 @@ int kvm_has_intx_set_mask(void); int kvm_init_vcpu(CPUState *cpu); int kvm_cpu_exec(CPUState *cpu); -int kvm_destroy_vcpu(CPUState *cpu); +void kvm_destroy_vcpu(CPUState *cpu); /** * kvm_arm_supports_user_irq diff --git a/softmmu/cpus.c b/softmmu/cpus.c index 9b4c59f6f5..f4cc05128b 100644 --- a/softmmu/cpus.c +++ b/softmmu/cpus.c @@ -179,9 +179,6 @@ void cpu_synchronize_state(CPUState *cpu) if (cpus_accel && cpus_accel->synchronize_state) { cpus_accel->synchronize_state(cpu); } - if (kvm_enabled()) { - kvm_cpu_synchronize_state(cpu); - } if (hax_enabled()) { hax_cpu_synchronize_state(cpu); } @@ -195,9 +192,6 @@ void cpu_synchronize_post_reset(CPUState *cpu) if (cpus_accel && cpus_accel->synchronize_post_reset) { cpus_accel->synchronize_post_reset(cpu); } - if (kvm_enabled()) { - kvm_cpu_synchronize_post_reset(cpu); - } if (hax_enabled()) { hax_cpu_synchronize_post_reset(cpu); } @@ -211,9 +205,6 @@ void cpu_synchronize_post_init(CPUState *cpu) if (cpus_accel && cpus_accel->synchronize_post_init) { cpus_accel->synchronize_post_init(cpu); } - if (kvm_enabled()) { - kvm_cpu_synchronize_post_init(cpu); - } if (hax_enabled()) { hax_cpu_synchronize_post_init(cpu); } @@ -227,9 +218,6 @@ void cpu_synchronize_pre_loadvm(CPUState *cpu) if (cpus_accel && cpus_accel->synchronize_pre_loadvm) { cpus_accel->synchronize_pre_loadvm(cpu); } - if (kvm_enabled()) { - kvm_cpu_synchronize_pre_loadvm(cpu); - } if (hax_enabled()) { hax_cpu_synchronize_pre_loadvm(cpu); } @@ -384,14 +372,6 @@ void run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data) do_run_on_cpu(cpu, func, data, &qemu_global_mutex); } -static void qemu_kvm_destroy_vcpu(CPUState *cpu) -{ - if (kvm_destroy_vcpu(cpu) < 0) { - error_report("kvm_destroy_vcpu failed"); - exit(EXIT_FAILURE); - } -} - static void qemu_cpu_stop(CPUState *cpu, bool exit) { g_assert(qemu_cpu_is_self(cpu)); @@ -437,48 +417,6 @@ void qemu_wait_io_event(CPUState *cpu) qemu_wait_io_event_common(cpu); } -static void *qemu_kvm_cpu_thread_fn(void *arg) -{ - CPUState *cpu = arg; - int r; - - rcu_register_thread(); - - qemu_mutex_lock_iothread(); - qemu_thread_get_self(cpu->thread); - cpu->thread_id = qemu_get_thread_id(); - cpu->can_do_io = 1; - current_cpu = cpu; - - r = kvm_init_vcpu(cpu); - if (r < 0) { - error_report("kvm_init_vcpu failed: %s", strerror(-r)); - exit(1); - } - - kvm_init_cpu_signals(cpu); - - /* signal CPU creation */ - cpu_thread_signal_created(cpu); - qemu_guest_random_seed_thread_part2(cpu->random_seed); - - do { - if (cpu_can_run(cpu)) { - r = kvm_cpu_exec(cpu); - if (r == EXCP_DEBUG) { - cpu_handle_guest_debug(cpu); - } - } - qemu_wait_io_event(cpu); - } while (!cpu->unplug || cpu_can_run(cpu)); - - qemu_kvm_destroy_vcpu(cpu); - cpu_thread_signal_destroyed(cpu); - qemu_mutex_unlock_iothread(); - rcu_unregister_thread(); - return NULL; -} - static void *qemu_hax_cpu_thread_fn(void *arg) { CPUState *cpu = arg; @@ -802,19 +740,6 @@ static void qemu_hax_start_vcpu(CPUState *cpu) #endif } -static void qemu_kvm_start_vcpu(CPUState *cpu) -{ - char thread_name[VCPU_THREAD_NAME_SIZE]; - - cpu->thread = g_malloc0(sizeof(QemuThread)); - cpu->halt_cond = g_malloc0(sizeof(QemuCond)); - qemu_cond_init(cpu->halt_cond); - snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/KVM", - cpu->cpu_index); - qemu_thread_create(cpu->thread, thread_name, qemu_kvm_cpu_thread_fn, - cpu, QEMU_THREAD_JOINABLE); -} - static void qemu_hvf_start_vcpu(CPUState *cpu) { char thread_name[VCPU_THREAD_NAME_SIZE]; @@ -876,8 +801,6 @@ void qemu_init_vcpu(CPUState *cpu) if (cpus_accel) { /* accelerator already implements the CpusAccel interface */ cpus_accel->create_vcpu_thread(cpu); - } else if (kvm_enabled()) { - qemu_kvm_start_vcpu(cpu); } else if (hax_enabled()) { qemu_hax_start_vcpu(cpu); } else if (hvf_enabled()) { From patchwork Mon Aug 3 09:05:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudio Fontana X-Patchwork-Id: 277193 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A1A54C433E0 for ; Mon, 3 Aug 2020 09:12:10 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7B9CD206E2 for ; Mon, 3 Aug 2020 09:12:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B9CD206E2 Authentication-Results: mail.kernel.org; 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Mon, 3 Aug 2020 09:05:57 +0000 (UTC) From: Claudio Fontana To: Paolo Bonzini , =?utf-8?q?Alex_Benn=C3=A9e?= , Peter Maydell , =?utf-8?q?Philippe_Mathieu-?= =?utf-8?b?RGF1ZMOp?= Subject: [RFC v3 7/8] cpus: extract out whpx-specific code to target/i386/ Date: Mon, 3 Aug 2020 11:05:32 +0200 Message-Id: <20200803090533.7410-8-cfontana@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20200803090533.7410-1-cfontana@suse.de> References: <20200803090533.7410-1-cfontana@suse.de> Received-SPF: pass client-ip=195.135.220.15; envelope-from=cfontana@suse.de; helo=mx2.suse.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/02 22:52:29 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x (no timestamps) [generic] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Thomas Huth , Eduardo Habkost , Pavel Dovgalyuk , Marcelo Tosatti , qemu-devel@nongnu.org, Markus Armbruster , Roman Bolshakov , Wenchao Wang , Colin Xu , Claudio Fontana , haxm-team@intel.com, Sunil Muthuswamy , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" register a "CpusAccel" interface for WHPX as well. Signed-off-by: Claudio Fontana --- MAINTAINERS | 1 + softmmu/cpus.c | 79 -------------------------------------- target/i386/Makefile.objs | 2 +- target/i386/whpx-all.c | 3 ++ target/i386/whpx-cpus.c | 96 +++++++++++++++++++++++++++++++++++++++++++++++ target/i386/whpx-cpus.h | 17 +++++++++ 6 files changed, 118 insertions(+), 80 deletions(-) create mode 100644 target/i386/whpx-cpus.c create mode 100644 target/i386/whpx-cpus.h diff --git a/MAINTAINERS b/MAINTAINERS index f8bac8cb64..e38097a265 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -450,6 +450,7 @@ WHPX CPUs M: Sunil Muthuswamy S: Supported F: target/i386/whpx-all.c +F: target/i386/whpx-cpus.c F: target/i386/whp-dispatch.h F: accel/stubs/whpx-stub.c F: include/sysemu/whpx.h diff --git a/softmmu/cpus.c b/softmmu/cpus.c index 784593adec..586b4acaab 100644 --- a/softmmu/cpus.c +++ b/softmmu/cpus.c @@ -34,7 +34,6 @@ #include "sysemu/hw_accel.h" #include "sysemu/kvm.h" #include "sysemu/hvf.h" -#include "sysemu/whpx.h" #include "exec/exec-all.h" #include "qemu/thread.h" #include "qemu/plugin.h" @@ -178,9 +177,6 @@ void cpu_synchronize_state(CPUState *cpu) if (cpus_accel && cpus_accel->synchronize_state) { cpus_accel->synchronize_state(cpu); } - if (whpx_enabled()) { - whpx_cpu_synchronize_state(cpu); - } } void cpu_synchronize_post_reset(CPUState *cpu) @@ -188,9 +184,6 @@ void cpu_synchronize_post_reset(CPUState *cpu) if (cpus_accel && cpus_accel->synchronize_post_reset) { cpus_accel->synchronize_post_reset(cpu); } - if (whpx_enabled()) { - whpx_cpu_synchronize_post_reset(cpu); - } } void cpu_synchronize_post_init(CPUState *cpu) @@ -198,9 +191,6 @@ void cpu_synchronize_post_init(CPUState *cpu) if (cpus_accel && cpus_accel->synchronize_post_init) { cpus_accel->synchronize_post_init(cpu); } - if (whpx_enabled()) { - whpx_cpu_synchronize_post_init(cpu); - } } void cpu_synchronize_pre_loadvm(CPUState *cpu) @@ -211,9 +201,6 @@ void cpu_synchronize_pre_loadvm(CPUState *cpu) if (hvf_enabled()) { hvf_cpu_synchronize_pre_loadvm(cpu); } - if (whpx_enabled()) { - whpx_cpu_synchronize_pre_loadvm(cpu); - } } int64_t cpus_get_virtual_clock(void) @@ -446,48 +433,6 @@ static void *qemu_hvf_cpu_thread_fn(void *arg) return NULL; } -static void *qemu_whpx_cpu_thread_fn(void *arg) -{ - CPUState *cpu = arg; - int r; - - rcu_register_thread(); - - qemu_mutex_lock_iothread(); - qemu_thread_get_self(cpu->thread); - cpu->thread_id = qemu_get_thread_id(); - current_cpu = cpu; - - r = whpx_init_vcpu(cpu); - if (r < 0) { - fprintf(stderr, "whpx_init_vcpu failed: %s\n", strerror(-r)); - exit(1); - } - - /* signal CPU creation */ - cpu_thread_signal_created(cpu); - qemu_guest_random_seed_thread_part2(cpu->random_seed); - - do { - if (cpu_can_run(cpu)) { - r = whpx_vcpu_exec(cpu); - if (r == EXCP_DEBUG) { - cpu_handle_guest_debug(cpu); - } - } - while (cpu_thread_is_idle(cpu)) { - qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex); - } - qemu_wait_io_event_common(cpu); - } while (!cpu->unplug || cpu_can_run(cpu)); - - whpx_destroy_vcpu(cpu); - cpu_thread_signal_destroyed(cpu); - qemu_mutex_unlock_iothread(); - rcu_unregister_thread(); - return NULL; -} - void cpus_kick_thread(CPUState *cpu) { #ifndef _WIN32 @@ -502,12 +447,6 @@ void cpus_kick_thread(CPUState *cpu) fprintf(stderr, "qemu:%s: %s", __func__, strerror(err)); exit(1); } -#else /* _WIN32 */ - if (!qemu_cpu_is_self(cpu)) { - if (whpx_enabled()) { - whpx_vcpu_kick(cpu); - } - } #endif } @@ -682,22 +621,6 @@ static void qemu_hvf_start_vcpu(CPUState *cpu) cpu, QEMU_THREAD_JOINABLE); } -static void qemu_whpx_start_vcpu(CPUState *cpu) -{ - char thread_name[VCPU_THREAD_NAME_SIZE]; - - cpu->thread = g_malloc0(sizeof(QemuThread)); - cpu->halt_cond = g_malloc0(sizeof(QemuCond)); - qemu_cond_init(cpu->halt_cond); - snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/WHPX", - cpu->cpu_index); - qemu_thread_create(cpu->thread, thread_name, qemu_whpx_cpu_thread_fn, - cpu, QEMU_THREAD_JOINABLE); -#ifdef _WIN32 - cpu->hThread = qemu_thread_get_handle(cpu->thread); -#endif -} - void cpus_register_accel(CpusAccel *ca) { assert(ca != NULL); @@ -727,8 +650,6 @@ void qemu_init_vcpu(CPUState *cpu) cpus_accel->create_vcpu_thread(cpu); } else if (hvf_enabled()) { qemu_hvf_start_vcpu(cpu); - } else if (whpx_enabled()) { - qemu_whpx_start_vcpu(cpu); } else { assert(0); } diff --git a/target/i386/Makefile.objs b/target/i386/Makefile.objs index ee5a8fd4b4..606dec67d1 100644 --- a/target/i386/Makefile.objs +++ b/target/i386/Makefile.objs @@ -18,7 +18,7 @@ ifeq ($(CONFIG_POSIX),y) obj-$(CONFIG_HAX) += hax-posix.o endif obj-$(CONFIG_HVF) += hvf/ -obj-$(CONFIG_WHPX) += whpx-all.o +obj-$(CONFIG_WHPX) += whpx-all.o whpx-cpus.o endif obj-$(CONFIG_SEV) += sev.o obj-$(call lnot,$(CONFIG_SEV)) += sev-stub.o diff --git a/target/i386/whpx-all.c b/target/i386/whpx-all.c index c78baac6df..8b6986c864 100644 --- a/target/i386/whpx-all.c +++ b/target/i386/whpx-all.c @@ -24,6 +24,8 @@ #include "migration/blocker.h" #include "whp-dispatch.h" +#include "whpx-cpus.h" + #include #include @@ -1575,6 +1577,7 @@ static int whpx_accel_init(MachineState *ms) whpx_memory_init(); cpu_interrupt_handler = whpx_handle_interrupt; + cpus_register_accel(&whpx_cpus); printf("Windows Hypervisor Platform accelerator is operational\n"); return 0; diff --git a/target/i386/whpx-cpus.c b/target/i386/whpx-cpus.c new file mode 100644 index 0000000000..3a0b69f771 --- /dev/null +++ b/target/i386/whpx-cpus.c @@ -0,0 +1,96 @@ +/* + * QEMU Windows Hypervisor Platform accelerator (WHPX) + * + * Copyright Microsoft Corp. 2017 + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "sysemu/kvm_int.h" +#include "qemu/main-loop.h" +#include "sysemu/cpus.h" +#include "qemu/guest-random.h" + +#include "sysemu/whpx.h" +#include "whpx-cpus.h" + +#include +#include + +static void *whpx_cpu_thread_fn(void *arg) +{ + CPUState *cpu = arg; + int r; + + rcu_register_thread(); + + qemu_mutex_lock_iothread(); + qemu_thread_get_self(cpu->thread); + cpu->thread_id = qemu_get_thread_id(); + current_cpu = cpu; + + r = whpx_init_vcpu(cpu); + if (r < 0) { + fprintf(stderr, "whpx_init_vcpu failed: %s\n", strerror(-r)); + exit(1); + } + + /* signal CPU creation */ + cpu_thread_signal_created(cpu); + qemu_guest_random_seed_thread_part2(cpu->random_seed); + + do { + if (cpu_can_run(cpu)) { + r = whpx_vcpu_exec(cpu); + if (r == EXCP_DEBUG) { + cpu_handle_guest_debug(cpu); + } + } + while (cpu_thread_is_idle(cpu)) { + qemu_cond_wait_iothread(cpu->halt_cond); + } + qemu_wait_io_event_common(cpu); + } while (!cpu->unplug || cpu_can_run(cpu)); + + whpx_destroy_vcpu(cpu); + cpu_thread_signal_destroyed(cpu); + qemu_mutex_unlock_iothread(); + rcu_unregister_thread(); + return NULL; +} + +static void whpx_start_vcpu_thread(CPUState *cpu) +{ + char thread_name[VCPU_THREAD_NAME_SIZE]; + + cpu->thread = g_malloc0(sizeof(QemuThread)); + cpu->halt_cond = g_malloc0(sizeof(QemuCond)); + qemu_cond_init(cpu->halt_cond); + snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/WHPX", + cpu->cpu_index); + qemu_thread_create(cpu->thread, thread_name, whpx_cpu_thread_fn, + cpu, QEMU_THREAD_JOINABLE); +#ifdef _WIN32 + cpu->hThread = qemu_thread_get_handle(cpu->thread); +#endif +} + +static void whpx_kick_vcpu_thread(CPUState *cpu) +{ + if (!qemu_cpu_is_self(cpu)) { + whpx_vcpu_kick(cpu); + } +} + +CpusAccel whpx_cpus = { + .create_vcpu_thread = whpx_start_vcpu_thread, + .kick_vcpu_thread = whpx_kick_vcpu_thread, + + .synchronize_post_reset = whpx_cpu_synchronize_post_reset, + .synchronize_post_init = whpx_cpu_synchronize_post_init, + .synchronize_state = whpx_cpu_synchronize_state, + .synchronize_pre_loadvm = whpx_cpu_synchronize_pre_loadvm, +}; diff --git a/target/i386/whpx-cpus.h b/target/i386/whpx-cpus.h new file mode 100644 index 0000000000..60b7be3735 --- /dev/null +++ b/target/i386/whpx-cpus.h @@ -0,0 +1,17 @@ +/* + * Accelerator CPUS Interface + * + * Copyright 2020 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef WHPX_CPUS_H +#define WHPX_CPUS_H + +#include "sysemu/cpus.h" + +extern CpusAccel whpx_cpus; + +#endif /* WHPX_CPUS_H */