Gregory Haskins wrote:
> Halting in userspace requires a relatively cumbersome mechanism to signal the
> halted VCPU. Implementing halt in kernel should be relatively straight
> forward and it eliminates the need for the signaling
>
> /*
> + * The vCPU has executed a HLT instruction with in-kernel mode enabled.
> + */
> +static int kvm_vcpu_kern_halt(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
> +{
> + DECLARE_WAITQUEUE(wait, current);
> + sigset_t sigblocked, sigsaved;
> + int r = 1;
> +
> + /*
> + * Unmask all signals while we wait
> + */
> + memset(&sigblocked, 0, sizeof(sigblocked));
> + sigprocmask(SIG_SETMASK, &sigblocked, &sigsved);
>
We have a specialized signal mask for the kernel, and it is already in
effect here. See KVM_SET_SIGNAL_MASK.
--
error compiling committee.c: too many arguments to function
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