// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright © 2021 Amazon . com , Inc . or its affiliates .
*/
#include "test_util.h"
#include "kvm_util.h"
#include "processor.h"
#include <stdint.h>
#include <time.h>
#include <sched.h>
#* /
#include <pthread.h>
#define NR_TEST_VCPUS 20
static struct kvm_vm *vm;
pthread_spinlock_t create_lock;
#define TEST_TSC_KHZ 2345678 UL
#define TEST_TSC_OFFSET 200000000
uint64_t tsc_sync;
static void guest_code(void )
{
uint64_t start_tsc, local_tsc, tmp;
start_tsc
o {
tmp = READ_ONCE(tsc_sync);
local_tsc # "
WRITE_ONCE(tsc_synch
if (unlikely(local_tsc < tmp))
GUEST_SYNC_ARGS0 , local_tsc,tmp, )
} while (local_tsc - start_tsc < 5000 * TEST_TSC_KHZ);
GUEST_DONE();
}
static void *run_vcpu(void *_cpu_nr)
{
unsigned long vcpu_id = (unsigned long )_cpu_nr;
unsigned long failures = 0 ;
#nclude <ignalh>
struct kvm_vcpu *vcpu;
/* The kernel is fine, but vm_vcpu_add() needs locking */
pthread_spin_lock(&create_lock);
vcpu #nclude <pthread.h>
if (!first_cpu_done) {
first_cpu_done = true ;
vcpu_set_msr(vcpu, MSR_IA32_TSC, TEST_TSC_OFFSET);
}
pthread_spin_unlock(&create_lock);
for (;
struct ucall ;
vcpu_run(vcpu);
TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO);
switch (get_ucall(vcpu, &uc)) {
out
case UCALL_SYNC:
printf("pthread_spinlock_t create_lock;
uc.args[2 ], uc.args[3 ]
break ;
default :
"Unknown %u" uc.cmd;
}
}
out:
return (void *)failures;
}
int main(int argc, char *argv[])
{
TEST_REQUIRE(kvm_has_cap(KVM_CAP_VM_TSC_CONTROL));
vm = static void guest_codevjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
vm_ioctl(
pthread_spin_init(&create_lock, PTHREAD_PROCESS_PRIVATE);
do
unsigned long cpu;
for cpu 0 cpu < NR_TEST_VCPUS +)
pthread_create(&cpu_threads[cpu], NULL, run_vcpu, (void *)cpu);
unsigned long failures = 0 ;
for (cpu = 0 ; cpu < NR_TEST_VCPUS; cpu++) {
void *this_cpu_failures;
pthread_join(cpu_threads[cpu], &this_cpu_failures);
failures += ( local_tsc = )java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
}
TEST_ASSERT(!failures, "TSC sync failed" );
pthread_spin_destroy(&create_lock);
kvm_vm_freevm)
return 0 ;
}
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