On Fri, 2014-01-10 at 14:52 -0500, David Miller wrote:
> From: Paul Gortmaker <paul.gortmaker@windriver.com>
> Date: Fri, 10 Jan 2014 14:28:16 -0500
> 
> > As of commit 7f12ad741a4870b8b6e3aafbcd868d0191770802 ("i40evf: transmit
> > and receive functionality") the s390 builds (allyesconfig) fail with:
> > 
> > drivers/net/ethernet/intel/i40evf/i40e_txrx.c: In function 'i40e_clean_rx_irq':
> > drivers/net/ethernet/intel/i40evf/i40e_txrx.c:818:3: error: implicit declaration of function 'prefetch'
> > make[5]: *** [drivers/net/ethernet/intel/i40evf/i40e_txrx.o] Error 1
> > 
> > due to an implicit assumption that the prototype from linux/prefetch.h
> > will be present.
> > 
> > Cc: Mitch Williams <mitch.a.williams@intel.com>
> > Cc: Greg Rose <gregory.v.rose@intel.com>
> > Cc: Sibai Li <sibai.li@intel.com>
> > Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
> > Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
> 
> I hope the Intel folks will pick this up quickly and push it to me.

Yep, Aaron has it in the queue and it is being reviewed and tested
currently.