On Thu, 8 May 2025 at 13:21, Michael S. Tsirkin <m...@redhat.com> wrote: > > compilers that QEMU requires support int128 > (though arithmetic might be more challenging). > As virtio wants to use int128 with bitwise opts only, > make it simple by failing configure if not there.
IIRC the problem is not the compiler version but whether or not it's targeting a 32-bit host: compilers will implement an int128 based on 2 64-bit registers, but not one based on 4 32-bit registers. Did you check this on all our supported host platforms ? (We've deprecated 32-bit host support, but not dropped it yet, I think.) thanks -- PMM
