Re: [PATCH 1/2] docs/about: Deprecate 32-bit x86 hosts and qemu-system-i386

On 2/27/23 10:12, Michael S. Tsirkin wrote: > On Mon, Feb 27, 2023 at 11:50:07AM +0000, Daniel P. Berrangé wrote: > > I feel like we should have separate deprecation entries for the > > i686 host support, and for qemu-system-i386 emulator binary, as > > although they're related they are independant features with > > differing impact. eg removing qemu-system-i386 affects all > > host architectures, not merely 32-bit x86 host, so I think we > > can explain the impact more clearly if we separate them. > > Removing qemu-system-i386 seems ok to me - I think qemu-system-x86_64 is > a superset. > > Removing support for building on 32 bit systems seems like a pity - it's > one of a small number of ways to run 64 bit binaries on 32 bit systems, > and the maintainance overhead is quite small. It's not that small. It only works for single-threaded system mode. It silently does not honor atomicity for user-only mode, which is perhaps worse not working at all.