The code has a simple bug on calculating aligned page table address. We can just use AllocateAlignedPages in MemoryAllocationLib instead. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Heyi Guo <heyi.guo@linaro.org> Cc: Leif Lindholm <leif.lindholm@linaro.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18421 6f19259b-4bc3-4df7-8a09-765794883524