The upstream QEMU community is raising the possibility of deprecating, and subsequently deleting, support for running emulation guests on 32-bit *hosts*. Running 32-bit guests would *not* be affected. See this thread: https://lists.gnu.org/archive/html/qemu-devel/2019-09/msg06168.html IOW, if you have a armv7/i686/ppc *host* machine, you would no longer be able to use QEMU for either full machine system emulation (TCG), nor linux userspace emulators (TCG). Potentially KVM for 32-bit *host* would be dropped too, but QEMU might deal with that separately, to align with kernel support for KVM on 32-bit. In simple terms, we're talking this proposed matrix for running virtual machines or linux userspace with emulated CPU architectures: | Host 32-bit | Host 64-bit -------------+-------------+------------ Guest 32-bit | dropped | supported Guest 64-bit | dropped | supported Given that i686 is no longer composed in Fedora, that leaves armv7 as the Fedora host arch which would be affected. If upstream goes ahead, we have 2 releases with deprecation[1], so the earliest it would be deleted is the QEMU release in Aug 2020, which would be Fedora 33 timeframe IIUC. At that time any RPM with a dependancy on QEMU on 32-bit would need some %ifarch, or ExclusiveArch magic. I'm assuming there's nothing in Fedora infra that uses 32-bit hosts, as IIUC, our armv7 koji builders are all on aarch64 hosts. Does anyone know of, or have, any critical/important use cases that would be disrupted by QEMU dropping 32-bit *host* support ? If so, let me know here & I can forward feedback on. Or feel free to go direct to QEMU thread upstream. Regards, Daniel [1] https://qemu.weilnetz.de/doc/qemu-doc.html#Deprecated-features -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
