KVM: VMX: do not try to reexecute failed instruction while emulating invalid guest...

KVM: VMX: do not try to reexecute failed instruction while emulating invalid guest state

commit 991eebf9f8e523e7ff1e4d31ac80641582b2e57a upstream.

During invalid guest state emulation vcpu cannot enter guest mode to try
to reexecute instruction that emulator failed to emulate, so emulation
will happen again and again.  Prevent that by telling the emulator that
instruction reexecution should not be attempted.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>