KVM: VMX: fix invalid cpu passed to smp_call_function_single

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In loaded_vmcs_clear, loaded_vmcs->cpu is the fist parameter passed to
smp_call_function_single, if the target cpu is downing (doing cpu hot remove),
loaded_vmcs->cpu can become -1 then -1 is passed to smp_call_function_single

It can be triggered when vcpu is being destroyed, loaded_vmcs_clear is called
in the preemptionable context

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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Xiao Guangrong 2012-11-28 20:53:15 +08:00 • committed by Marcelo Tosatti

parent 859f8450d8

commit e6c7d32172

1 changed files with 5 additions and 3 deletions

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arch/x86/kvm/vmx.c

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