[PATCH 0/3] Support userspace irqchip with arch timers

[Alexander Graf]

On 27.09.16 21:08, Christoffer Dall wrote:
> Hi Alex,
> 
> Marc and I have been looking at this during Linaro connect and have
> slightly reworked your patch into this small series.
> 
> It would be good if you could have a look at it and test it out.
> 
> I've tested it with your QEMU, and it works for UP, but secondary CPUs
> fail to come up, and it looks like the kernel never gets an IPI for
> those CPUs from userspace.  Any chance you're willing to take a look at
> that?

I still need to see whether I can come up with a prettier solution, but
for now this works:

diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index f1ad805..8b9a084 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -2393,7 +2393,11 @@ static int kvm_get_mp_state(X86CPU *cpu)
         return ret;
     }
     env->mp_state = mp_state.mp_state;
+#ifdef CONFIG_ARM
+    if (kvm_enabled()) {
+#else
     if (kvm_irqchip_in_kernel()) {
+#endif
         cs->halted = (mp_state.mp_state == KVM_MP_STATE_HALTED);
     }
     return 0;


Alex