KVM: nVMX: Fix VMXON emulation

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handle_vmon doesn't check if L1 is already in root mode (VMXON
was previously called). This patch adds this missing check and calls
nested_vmx_failValid if VMX is already ON.
We need this check because L0 will allocate the shadow vmcs when L1
executes VMXON and we want to avoid host leaks (due to shadow vmcs
allocation) if L1 executes VMXON repeatedly.

Signed-off-by: Abel Gordon <abelg@il.ibm.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

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Abel Gordon 2013-04-18 14:36:55 +03:00 • committed by Gleb Natapov

parent 20b97feaf6

commit 145c28dd19

1 changed files with 8 additions and 0 deletions

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arch/x86/kvm/vmx.c

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