Insert the appropriate UNWIND hint into the kvm_exc_entry assembly function to guide the generation of correct ORC table entries, thereby solving the timeout problem ("unreliable stack") while loading the livepatch-sample module on a physical machine running virtual machines with multiple vcpus. Cc: stable@vger.kernel.org Signed-off-by: Xianglai Li <lixianglai@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>