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List: kvm-ppc
Subject: [PATCH 28/28] KVM: PPC: booke: Get/set guest EPCR register using ONE_REG interface
From: Alexander Graf <agraf () suse ! de>
Date: 2012-12-06 0:41:17
Message-ID: 1354754477-15472-29-git-send-email-agraf () suse ! de
[Download RAW message or body]
From: Mihai Caraman <mihai.caraman@freescale.com>
Implement ONE_REG interface for EPCR register adding KVM_REG_PPC_EPCR to
the list of ONE_REG PPC supported registers.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[agraf: remove HV dependency, use get/put_user]
Signed-off-by: Alexander Graf <agraf@suse.de>
---
Documentation/virtual/kvm/api.txt | 1 +
arch/powerpc/include/uapi/asm/kvm.h | 2 ++
arch/powerpc/kvm/booke.c | 14 ++++++++++++++
3 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index a5607c5..a4df553 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -1773,6 +1773,7 @@ registers, find a list below:
PPC | KVM_REG_PPC_VPA_ADDR | 64
PPC | KVM_REG_PPC_VPA_SLB | 128
PPC | KVM_REG_PPC_VPA_DTL | 128
+ PPC | KVM_REG_PPC_EPCR | 32
4.69 KVM_GET_ONE_REG
diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h
index 514883d..2fba8a6 100644
--- a/arch/powerpc/include/uapi/asm/kvm.h
+++ b/arch/powerpc/include/uapi/asm/kvm.h
@@ -411,4 +411,6 @@ struct kvm_get_htab_header {
#define KVM_REG_PPC_VPA_SLB (KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x83)
#define KVM_REG_PPC_VPA_DTL (KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x84)
+#define KVM_REG_PPC_EPCR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x85)
+
#endif /* __LINUX_KVM_POWERPC_H */
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 037d045..69f1140 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -1388,6 +1388,11 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
&vcpu->arch.dbg_reg.dac[dac], sizeof(u64));
break;
}
+#if defined(CONFIG_64BIT)
+ case KVM_REG_PPC_EPCR:
+ r = put_user(vcpu->arch.epcr, (u32 __user *)(long)reg->addr);
+ break;
+#endif
default:
break;
}
@@ -1415,6 +1420,15 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
(u64 __user *)(long)reg->addr, sizeof(u64));
break;
}
+#if defined(CONFIG_64BIT)
+ case KVM_REG_PPC_EPCR: {
+ u32 new_epcr;
+ r = get_user(new_epcr, (u32 __user *)(long)reg->addr);
+ if (r == 0)
+ kvmppc_set_epcr(vcpu, new_epcr);
+ break;
+ }
+#endif
default:
break;
}
--
1.6.0.2
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