b594fba4ec
This reverts commit "MdeModulePkg/SMM: Disallow unregister SMI handler in other SMI handler" for better design later. Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Jiaxin Wu <jiaxin.wu@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>