From 57038a92bb06111fbee57f56c0231359573e805d Mon Sep 17 00:00:00 2001
From: Claudio Fontana <cfontana@suse.de>
Date: Tue, 7 Jul 2020 10:54:37 +0200
Subject: cpus: extract out kvm-specific code to accel/kvm
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

register a "CpusAccel" interface for KVM as well.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[added const]
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 softmmu/cpus.c | 77 ----------------------------------------------------------
 1 file changed, 77 deletions(-)

(limited to 'softmmu')

diff --git a/softmmu/cpus.c b/softmmu/cpus.c
index b14b22161f..9fa73735a2 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));
@@ -436,48 +416,6 @@ 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;
@@ -801,19 +739,6 @@ 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];
@@ -875,8 +800,6 @@ 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()) {
-- 
cgit v1.2.3