[PATCH v3 3/7] x86: re-work insn/suffix recognition

[Jan Beulich]

On 06.10.2022 01:52, H.J. Lu wrote:
> Does the new assembler work on Linux kernel which has "rep movsd"?

No. And it shouldn't, as they should never have used MOVSD. The only valid
mnemonic (in AT&T syntax) is MOVSL. If you're meaning to suggest that we
continue to support MOVSD in AT&T mode, then this will - once again for
consistency - need extending to _all_ other D-suffixable insns the SDM
specifies. I can only repeat what I've said before: Consistency is a
requirement such that users can predict assembler behavior.

In the meantime I guess I'll make a patch for Linux.

Jan