Hello! I've tried to use 64-bit VMX instructions like
VMREAD qword [rbx], rax
VMWRITE rax, qword [rbx]
but got error "Invalid size of operand". In the Intel manual volume 2B is written:
VMREAD r/m64, r64
VMWRITE r64, r/m64
But FASM allows to use only the following syntax:
vmread qword [rbx], eax
vmwrite eax, qword [rbx]
Is it right?

I personally wouldn't be surprised if VT-x instructions were broken... Intel has some mistakes in manual, because of which we don't know which way the rm/r or r/rm is.

No, I think it's equal to instructions like mov cr0, rax. Such instructions are 64-bit by default.

oh... I missed your point. I thouth you was speaking about order of "rm/r" or "r/rm", because this is quite unclear from manual.

Seems that these instructions are REALLY broken I'll move it to compiler internals for Tomasz.

Fixed in 1.67.28.

Version 1.67.26 seems to be present at the download section, but I cannot find version 1.67.28.

Regards,
Mac2004

Because it's not released yet - I still have couple more of bugs to fix.

Neverthelress, since I forgot to release 1.67.27 in the meantime anyway, I'm renaming it back to 1.67.27 - with this number it will get released soon.

Ok, I'll be waiting to get a copy of version 1.67.27.

regrads,
Mac2004