i8259: don't abort when trying to use level sensitive irqs
This is a guest-triggerable error, as seen when using Xenix 2.3.4. Replace hw_error by LOG_UNIMPL, so that guests can continue. With this patch, I can install and use Xenix 2.3.4a without any problem. I can also start installation of Xenix 2.3.4q, but it fails due to not finding an hard disk. Signed-off-by: NHervé Poussineau <hpoussin@reactos.org> Acked-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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