linux-kernel - [PATCH 05/37] KVM: ppc: Add dbsr in kvm_vcpu

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Date:	Fri, 27 Feb 2009 12:26:28 +0200
From:	Avi Kivity <avi@...hat.com>
To:	kvm@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 05/37] KVM: ppc: Add dbsr in kvm_vcpu_arch

From: Hollis Blanchard <hollisb@...ibm.com>

Kernel for E500 need clear dbsr when startup.
So add dbsr register in kvm_vcpu_arch for BOOKE.

Signed-off-by: Liu Yu <yu.liu@...escale.com>
Signed-off-by: Hollis Blanchard <hollisb@...ibm.com>
Signed-off-by: Avi Kivity <avi@...hat.com>
---
 arch/powerpc/include/asm/kvm_host.h |    1 +
 arch/powerpc/kvm/booke_emulate.c    |    4 ++++
 2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 65c4d49..50e5ce1 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -163,6 +163,7 @@ struct kvm_vcpu_arch {
 	u32 ccr1;
 	u32 dbcr0;
 	u32 dbcr1;
+	u32 dbsr;
 
 #ifdef CONFIG_KVM_EXIT_TIMING
 	struct kvmppc_exit_timing timing_exit;
diff --git a/arch/powerpc/kvm/booke_emulate.c b/arch/powerpc/kvm/booke_emulate.c
index 8aa78f1..aebc65e 100644
--- a/arch/powerpc/kvm/booke_emulate.c
+++ b/arch/powerpc/kvm/booke_emulate.c
@@ -111,6 +111,8 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
 		vcpu->arch.dbcr0 = vcpu->arch.gpr[rs]; break;
 	case SPRN_DBCR1:
 		vcpu->arch.dbcr1 = vcpu->arch.gpr[rs]; break;
+	case SPRN_DBSR:
+		vcpu->arch.dbsr &= ~vcpu->arch.gpr[rs]; break;
 	case SPRN_TSR:
 		vcpu->arch.tsr &= ~vcpu->arch.gpr[rs]; break;
 	case SPRN_TCR:
@@ -204,6 +206,8 @@ int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
 		vcpu->arch.gpr[rt] = vcpu->arch.dbcr0; break;
 	case SPRN_DBCR1:
 		vcpu->arch.gpr[rt] = vcpu->arch.dbcr1; break;
+	case SPRN_DBSR:
+		vcpu->arch.gpr[rt] = vcpu->arch.dbsr; break;
 
 	case SPRN_IVOR0:
 		vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
-- 
1.6.0.6

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