On Wed, Jun 12, 2024 at 06:40:09PM +0300, Alexander Monakov wrote: > > On Wed, 12 Jun 2024, Daniel P. Berrangé wrote: > > > I learnt that FESCo approved a surprisingly loose rule saying > > > > "Libraries packaged in Fedora may require ISA extensions, > > however any packaged application must not crash on any > > officially supported architecture, either by providing > > a generic fallback implementation OR by cleanly exiting > > when the requisite hardware support is unavailable." > > > > This might suggest we could put a runtime feature check in main(), > > print a warning and then exit(1), however, QEMU has alot of code > > that is triggered from ELF constructors. If we're building the > > entire of QEMU codebase with extra features enabled, I worry that > > the constructors could potentially cause a illegal instruction > > crash before main() runs ? > > Are you literally suggesting to find a solution that satisfies the letter > of Fedora rules, and not what's good for the spirit of a wider community.
I'm interested in exploring what the options are. Personally I still think QEMU ought to maintain compat with the original x86_64 ABI, since very few distros have moved to requiring -v2, but if that doesn't happen I want to understand the implications for Fedora since that's where I'm a maintainer. With regards, Daniel -- |: 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 :|
