KVM: x86: Invert emulation re-execute behavior to make it opt-in

KVM: x86: Invert emulation re-execute behavior to make it opt-in

commit 8065dbd1ee0ef04321d80da7999b4f0086e0a407 upstream.

Re-execution of an instruction after emulation decode failure is
intended to be used only when emulating shadow page accesses.  Invert
the flag to make allowing re-execution opt-in since that behavior is
by far in the minority.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>