> In Fedora rawhide we're currently seeing oopses whenever a
> processes dlopen()s a library which prelink() has previously relocated
> above 1Gb. Some more details at:
>
>
https://bugzilla.redhat.com/436453
>
> The issue seems to be that during xen_pgd_pin(), we only pin
> PTE pages, but xen's release_pmd() tries to unpin PMD pages too.
>
> The following series of patches is against the latest x86
> tree.