On Thu, 2018-07-26 at 17:09 +0200, Sebastian Andrzej Siewior wrote: > On 2018-07-11 17:07:22 [+0200], Mike Galbraith wrote: > > Greetings, > > > > With the patch below, there's still one neon splat to figure out what > > to do with should this patch not die a gruesome death. Cavium box > > boots and seemingly works fine modulo kvm, which is utterly deadly in > > 4.16-rt due to.. > > > > 972 if (!vgic_initialized(vcpu->kvm)) > > 973 return false; > > 974 > > 975 irq = vgic_get_irq(vcpu->kvm, vcpu, vintid); > > 976 spin_lock_irqsave(&irq->irq_lock, flags); > > > > ..that lock apparently having wandered into a minefield post v4.14. > > > > Remaining neon splat: > > I don't have this with preempt-disable patch for kernel_neon_begin() > (posted seconds ago). Oh, forget you _ever saw_ that patch. It later demonstrated it's "correctness" quite convincingly. I didn't explicitly recall it due to the patch it tried to build upon proving in the end to be a bit south of wonderful itself, making the whole exercise a "let's make a bad situation even worse" kinda thing :) -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
