Hi.,

Nope, it will not clear the upper 32bit right.

From: Marvin Häuser <mhaeuser@posteo.de>
Sent: Sunday, March 19, 2023 3:38 AM
To: S, Ashraf Ali <ashraf.ali.s@intel.com>; devel@edk2.groups.io
Subject: Re: [edk2-devel] [PATCH v2] IntelFsp2Pkg: Fix NASM X64 build warnings.

Hi Ashraf,

”mov eax, eax” does clear the high 32 Bits of rax.

Best regards,
Marvin