Stable release queue build failures (3.18, 4.1)

v3.18.109-42-g6009175, s390:allnoconfig:

arch/s390/mm/vmem.c:30:20: warning: 'vmem_alloc_pages' defined but not used [-Wunused-function] arch/s390/kernel/irq.c: Assembler messages: arch/s390/kernel/irq.c:180: Error: Unrecognized opcode: `brasl'

v4.1.51-555-g5b61994, {i386,x86_64}:{allyesconfig,allmodconfig}:

arch/x86/kvm/vmx.c: In function 'vmx_handle_external_intr': arch/x86/kvm/vmx.c:8016:4: error: expected ':' or ')' before 'CALL_NOSPEC'

Guenter