Slight correction: PAE paging can access up to 52 physical address
bits, for 4 PBytes of memory. Section 4.4 of the Intel® 64 and IA-32
Architectures Software Developer’s Manual Volume 3 (3A, 3B, 3C & 3D):
System Programming Guide covers it.
Brian J. Johnson
Vincent,
Thanks! I’d forgotten about that path.
The other answer is defer the work to a DXE driver that runs 64-bit x86.
Thanks,
Andrew Fish
> On Nov 9, 2022, at 10:58 AM, vincent zimmer wrote:
>
> we have the challenge of 32-bit PEI needing to access 64-bit addresses to
> support 64-bit D
