KVM: PPC: E500: Implement MMU notifiers
The e500 target has lived without mmu notifiers ever since it got
introduced, but fails for the user space check on them with hugetlbfs.
So in order to get that one working, implement mmu notifiers in a
reasonably dumb fashion and be happy. On embedded hardware, we almost
never end up with mmu notifier calls, since most people don't overcommit.
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 70a86c0..52f6cbb 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -459,6 +459,10 @@
if (vcpu->requests) {
if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu))
update_timer_ints(vcpu);
+#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
+ if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
+ kvmppc_core_flush_tlb(vcpu);
+#endif
}
}
@@ -579,6 +583,8 @@
#endif
kvm_guest_exit();
+ vcpu->mode = OUTSIDE_GUEST_MODE;
+ smp_wmb();
out:
vcpu->mode = OUTSIDE_GUEST_MODE;