UefiCpuPkg/PiSmmCpuDxeSmm: Remove assert check for PDE entry not exist

If 2MB-page is selected, PDE entry might exist, it's incorrect to assert
it's not exist. Detailed see blow case analysis (it's similar case if
address exceeds 4G):

Assume the Default Page table has covered below 6M size range:
[0000000000001000, 0000000000601000)
Then, with PageTableMap API, below Page table entry will be
created if 1G-page or 2M-page mode is selected:
[0000000000001000, 0000000000002000) -->  4K
[0000000000002000, 0000000000003000) -->  4K
...
[00000000001FF000, 0000000000200000) -->  4k
[0000000000200000, 0000000000400000) -->  2M
[0000000000400000, 0000000000600000) -->  2M
[0000000000600000, 0000000000601000) -->  4K
Above will cover 2M aligned address (0000000000600000) in page table. If
Page Fault happen by accessing 0000000000602000, need create the page
entry:
[0000000000602000, 0000000000603000) -->  4K
But PDE entry has been created/existed in page table with 0 PS bit.

So, this patch removes the assert check. The page table entry created
will be the platform-specified PageSize granularity.

Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>

0 files changed, 0 insertions, 0 deletions