v5.1-rc7 fails to build on s390x due to
vmf->page = ZERO_PAGE(vmf->vm_start);
from commit 67f269b37f9b ("RDMA/ucontext: Fix regression with
disassociate"). This is not a problem on x86_64 where ZERO_PAGE()
doesn't use its argument but s390 version does.
I suppose the line should rather read
vmf->page = ZERO_PAGE(vmf->vma->vm_start);
but I'm just guessing.
Michal Kubecek
