KVM: ppc: Add emulation of E500 register mmucsr0

Latest kernel flushes TLB via mmucsr0.

Signed-off-by: Liu Yu <yu.liu@freescale.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c
index d437160d388c..72386ddbd9d5 100644
--- a/arch/powerpc/kvm/e500_tlb.c
+++ b/arch/powerpc/kvm/e500_tlb.c
@@ -391,6 +391,22 @@ static int kvmppc_e500_gtlbe_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500,
         return 0;
 }
 
+int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value)
+{
+        int esel;
+
+        if (value & MMUCSR0_TLB0FI)
+                for (esel = 0; esel < vcpu_e500->guest_tlb_size[0]; esel++)
+                        kvmppc_e500_gtlbe_invalidate(vcpu_e500, 0, esel);
+        if (value & MMUCSR0_TLB1FI)
+                for (esel = 0; esel < vcpu_e500->guest_tlb_size[1]; esel++)
+                        kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel);
+
+        _tlbil_all();
+
+        return EMULATE_DONE;
+}
+
 int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb)
 {
         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);