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kvmclock: run KVM_KVMCLOCK_CTRL ioctl in vcpu thread 

According to KVM API Documentation, we should only
run vcpu ioctls from the same thread that was used
to create the vcpu. This patch makes KVM_KVMCLOCK_CTRL
ioctl consistent with the Documentation.

No functional change.

Signed-off-by: Yongji Xie <xieyongji@baidu.com>
Signed-off-by: Chai Wen <chaiwen@baidu.com>
Message-Id: <1531315364-2551-1-git-send-email-xieyongji@baidu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Yongji Xie <elohimes@gmail.com>
This commit is contained in:
Yongji Xie 2018-07-11 21:22:44 +08:00 committed by Paolo Bonzini
parent 5ee547bb78
commit 4c3e250627
1 changed files with 10 additions and 7 deletions
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17
hw/i386/kvm/clock.c
View File

@ -147,6 +147,15 @@ static void kvm_update_clock(KVMClockState *s)
s->clock_is_reliable = kvm_has_adjust_clock_stable();
}
static void do_kvmclock_ctrl(CPUState *cpu, run_on_cpu_data data)
{
int ret = kvm_vcpu_ioctl(cpu, KVM_KVMCLOCK_CTRL, 0);
if (ret && ret != -EINVAL) {
fprintf(stderr, "%s: %s\n", __func__, strerror(-ret));
}
}
static void kvmclock_vm_state_change(void *opaque, int running,
RunState state)
{
@ -183,13 +192,7 @@ static void kvmclock_vm_state_change(void *opaque, int running,
return;
}
CPU_FOREACH(cpu) {
ret = kvm_vcpu_ioctl(cpu, KVM_KVMCLOCK_CTRL, 0);
if (ret) {
if (ret != -EINVAL) {
fprintf(stderr, "%s: %s\n", __func__, strerror(-ret));
}
return;
}
run_on_cpu(cpu, do_kvmclock_ctrl, RUN_ON_CPU_NULL);
}
} else {