Re: [PATCH RFC] meson: require int128 type

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, May 08, 2025 at 01:30:25PM +0100, Peter Maydell wrote:
> On Thu, 8 May 2025 at 13:21, Michael S. Tsirkin <mst@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

Thanks for the feedback, indeed I did not. Will check some
config.