From 352df1deb2e3c40e65ff94c8d7c62d9144446b1c Mon Sep 17 00:00:00 2001 From: Mihai Caraman Date: Thu, 11 Oct 2012 06:13:29 +0000 Subject: [PATCH] KVM: PPC: booke: Get/set guest EPCR register using ONE_REG interface 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 [agraf: remove HV dependency, use get/put_user] Signed-off-by: Alexander Graf --- 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(+) diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index a5607c571cb3..a4df5535996b 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 514883dd311e..2fba8a66fb10 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 037d045db3f1..69f114015780 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; }