On Mon, Jan 26, 2009 at 11:15:01AM +0100, Jakub Jelinek wrote: > Another question is if we finally could bump the minimum supported kernel > version in Fedora 11 glibc. Currently Fedora 10 glibc requires 2.6.9 or > later kernel, which means it can't assume a lot of stuff (e.g. private > futexes, a lot of added syscalls etc.), which means it has to test for them > at runtime of every program (e.g. every threaded program does a dummy futex > syscall to check for private futexes, for futex realtime clock support and > has to use variables for this, instead of oring constants in the mutexes > etc., and glibc has to check for ENOSYS and have fallbacks compiled in). > 2.6.9 default comes I think still from the RHEL4 kernels. > Could we bump this ideally to 2.6.29? It would mean Fedora 11 userland > only runs on 2.6.29 and later kernels, but we could gain speed and decrease > size of glibc shared libraries. > No. No. No. No. No. No. Breaking userspace for anyone attempting to bisect a regression? Get real. You owe your users better than that. Ship two copies of glibc and decide at runtime, but a hardcoded limit is just BROKEN software design. regards, Kyle -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
