On Thu, Jun 05, 2014 at 02:35:12PM +0200, Ingo Molnar wrote:
> 
> * Peter Zijlstra <peterz@infradead.org> wrote:
> 
> > On Thu, Jun 05, 2014 at 01:11:10PM +0200, Ingo Molnar wrote:
> > > Unfortunately even with the latest bits from you the breakage I 
> > > reported weeks ago is not resolved:
> > 
> > crap, its the qrwlock bits, I fixed it for the config you gave me. 
> > Some paravirt crap header hell thing. Happen to have another 
> > .config?
> 
> A simple 'make defconfig' triggers the build failure for me:
> 
>   kernel/locking/qrwlock.c:24:25: fatal error: asm/qrwlock.h: No such file or directory
> 
> If I apply the minimal feature-enabling patch below on top of the base 
> qrwlock patch.
> 

Well, that second patch which you neutered below would've provided that
asm/qrwlock.h.

Lemme see if I can find it with randconfig with both patches applied.