KVM: PPC: bookehv: Add guest computation mode for irq delivery

When delivering guest IRQs, update MSR computation mode according to guest
interrupt computation mode found in EPCR.

Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[agraf: remove HV dependency in the code]
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 8 insertions, 1 deletions

diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 7c9c3891a14a..9457fb1b41c9 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -312,6 +312,7 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
         bool crit;
         bool keep_irq = false;
         enum int_class int_class;
+        ulong new_msr = vcpu->arch.shared->msr;
 
         /* Truncate crit indicators in 32 bit mode */
         if (!(vcpu->arch.shared->msr & MSR_SF)) {
@@ -407,7 +408,13 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
                         set_guest_esr(vcpu, vcpu->arch.queued_esr);
                 if (update_dear == true)
                         set_guest_dear(vcpu, vcpu->arch.queued_dear);
-                kvmppc_set_msr(vcpu, vcpu->arch.shared->msr & msr_mask);
+
+                new_msr &= msr_mask;
+#if defined(CONFIG_64BIT)
+                if (vcpu->arch.epcr & SPRN_EPCR_ICM)
+                        new_msr |= MSR_CM;
+#endif
+                kvmppc_set_msr(vcpu, new_msr);
 
                 if (!keep_irq)
                         clear_bit(priority, &vcpu->arch.pending_exceptions);