On 11/26/23 09:56, Paolo Bonzini wrote:
Il sab 25 nov 2023, 13:23 Petr Cvek <petrcve...@gmail.com <mailto:petrcve...@gmail.com>> ha scritto:GCC defines __i386__ for i386 and i486, which both lack RDTSC instruction. The i386 seems to be impossible to distinguish, but i486 can be identified by checking for undefined __i486__.As far as I know QEMU cannot be run on i486 anyway since TCG assumes the presence of CPUID. Have you actually tried?
TCG does not assume CPUID. We might have problems without cmpxchg8b, but if so that's in accel/tcg/ not tcg/. r~
