Default ISA/tuning flags for GCC, --enable-kernel= level for glibc

[Kevin Kofler]

Daniel P. Berrange wrote:
> There is no such restriction with Xen paravirtualization. The host & guest
> kernel have no need to be running the same version. The hypervisor ABI,
> and device ABI is what is fixed & this is independant of kernel version.
> You are thinking of container based virtualization where there is no
> separate guest kernel.

But Koji just uses a plain chroot, not actual virtualization at all.

        Kevin Kofler