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Notify vcpus participating in the rendezvous of the pending event to ensure

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that they execute the rendezvous function as soon as possible.
This commit is contained in:
neel 2014-03-17 23:30:38 +00:00
parent d5f533fd03
commit 9e498dc116
1 changed files with 11 additions and 0 deletions
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11
sys/amd64/vmm/vmm.c
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@ -1657,6 +1657,8 @@ void
vm_smp_rendezvous(struct vm *vm, int vcpuid, cpuset_t dest,
vm_rendezvous_func_t func, void *arg)
{
int i;
/*
* Enforce that this function is called without any locks
*/
@ -1687,6 +1689,15 @@ vm_smp_rendezvous(struct vm *vm, int vcpuid, cpuset_t dest,
vm_set_rendezvous_func(vm, func);
mtx_unlock(&vm->rendezvous_mtx);
/*
* Wake up any sleeping vcpus and trigger a VM-exit in any running
* vcpus so they handle the rendezvous as soon as possible.
*/
for (i = 0; i < VM_MAXCPU; i++) {
if (CPU_ISSET(i, &dest))
vcpu_notify_event(vm, i, false);
}
vm_handle_rendezvous(vm, vcpuid);
}