Re: kvm-45 problems

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

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Zhao, Yunfeng wrote:
> This fix cannot resolve this issue.
> Against latest kvm commits, SMP linux with 4 vcpus still cannot boot up.
> But the issue will not happen , if adding "-smp4 -no-acpi".
>   

Can you try the attached patch?




-- 
error compiling committee.c: too many arguments to function


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diff --git a/kernel/kvm_main.c b/kernel/kvm_main.c
index 0b2894a..61d931e 100644
--- a/kernel/kvm_main.c
+++ b/kernel/kvm_main.c
@@ -235,11 +235,7 @@ void kvm_flush_remote_tlbs(struct kvm *kvm)
 	 * to complete.
 	 */
 	for (cpu = first_cpu(cpus); cpu != NR_CPUS; cpu = next_cpu(cpu, cpus))
-		smp_call_function_single(cpu, ack_flush, &completed, 1, 0);
-	while (atomic_read(&completed) != needed) {
-		cpu_relax();
-		barrier();
-	}
+		smp_call_function_single(cpu, ack_flush, &completed, 1, 1);
 }
 
 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id)

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