Patchwork [26/28] KVM: PPC: bookehv: Add guest computation mode for irq delivery

login
register
mail settings
Submitter Alexander Graf
Date Dec. 6, 2012, 12:41 a.m.
Message ID <1354754477-15472-27-git-send-email-agraf@suse.de>
Download mbox | patch
Permalink /patch/204049/
State New
Headers show

Comments

Alexander Graf - Dec. 6, 2012, 12:41 a.m.
From: Mihai Caraman <mihai.caraman@freescale.com>

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>
---
 arch/powerpc/kvm/booke.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

Patch

diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 7c9c389..9457fb1 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);