"3.1.1 Boot Manager Programming" in the UEFI 2.5 spec mandates that Boot#### and similar options contain EFI_LOAD_OPTION structures. The EFI_LOAD_OPTION structure encodes the fixed initial part of the payload, and we can (and should) use it to enforce a minimum size for variable contents. This patch is meant as a safety improvement. Cc: Jaben Carsey <jaben.carsey@intel.com> Cc: Ryan Harkin <ryan.harkin@linaro.org> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19710 6f19259b-4bc3-4df7-8a09-765794883524