Aurelien Jarno <aurel...@aurel32.net> writes: 64-bit CPUs check for the L bit of comparison instruction to determine if the instruction is 32-bit wide, and not to the MSR SF bit. L=1 on a 32-bit CPU should generate an invalid instruction exception. No. See my previous post.
The L bit is to be ignored for 32-bit CPUs, just like the original code did. -- Torbjörn
