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Subject[PATCH 22/38] KVM: PPC E500: Add register l1csr0 emulation
Date
From: Liu Yu <yu.liu@freescale.com>

Latest kernel start to access l1csr0 to contron L1.
We just tell guest no operation is on going.

Signed-off-by: Liu Yu <yu.liu@freescale.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---
arch/powerpc/include/asm/kvm_e500.h | 1 +
arch/powerpc/kvm/e500_emulate.c | 6 ++++++
2 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_e500.h b/arch/powerpc/include/asm/kvm_e500.h
index 9d497ce..569dfd3 100644
--- a/arch/powerpc/include/asm/kvm_e500.h
+++ b/arch/powerpc/include/asm/kvm_e500.h
@@ -52,6 +52,7 @@ struct kvmppc_vcpu_e500 {
u32 mas5;
u32 mas6;
u32 mas7;
+ u32 l1csr0;
u32 l1csr1;
u32 hid0;
u32 hid1;
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index 7644f7a..95f8ec8 100644
--- a/arch/powerpc/kvm/e500_emulate.c
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -99,6 +99,10 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
vcpu_e500->mas6 = spr_val; break;
case SPRN_MAS7:
vcpu_e500->mas7 = spr_val; break;
+ case SPRN_L1CSR0:
+ vcpu_e500->l1csr0 = spr_val;
+ vcpu_e500->l1csr0 &= ~(L1CSR0_DCFI | L1CSR0_CLFC);
+ break;
case SPRN_L1CSR1:
vcpu_e500->l1csr1 = spr_val; break;
case SPRN_HID0:
@@ -179,6 +183,8 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
break;
}

+ case SPRN_L1CSR0:
+ kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr0); break;
case SPRN_L1CSR1:
kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr1); break;
case SPRN_HID0:
--
1.6.5.3


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