On 12.09.2012, at 02:18, Paul Mackerras wrote:
> This enables userspace to get and set various SPRs (special-purpose
> registers) using the KVM_[GS]ET_ONE_REG ioctls. With this, userspace
> can get and set all the SPRs that are part of the guest state, either
> through the KVM_[GS]ET_REGS ioctls, the KVM_[GS]ET_SREGS ioctls, or
> the KVM_[GS]ET_ONE_REG ioctls.
>
> The SPRs that are added here are:
>
> - DABR: Data address breakpoint register
> - DSCR: Data stream control register
> - PURR: Processor utilization of resources register
> - SPURR: Scaled PURR
> - DAR: Data address register
> - DSISR: Data storage interrupt status register
> - AMR: Authority mask register
> - UAMOR: User authority mask override register
> - MMCR0, MMCR1, MMCRA: Performance monitor unit control registers
> - PMC1..PMC8: Performance monitor unit counter registers
>
> Signed-off-by: Paul Mackerras <paulus@xxxxxxxxx>
> ---
> arch/powerpc/include/asm/kvm.h | 21 ++++++++
> arch/powerpc/kvm/book3s_hv.c | 106 ++++++++++++++++++++++++++++++++++++++++
Documentation/virtual/kvm/api.txt | +++++++++++
:)
Alex
> 2 files changed, 127 insertions(+)
>
> diff --git a/arch/powerpc/include/asm/kvm.h b/arch/powerpc/include/asm/kvm.h
> index 3c14202..9557576 100644
> --- a/arch/powerpc/include/asm/kvm.h
> +++ b/arch/powerpc/include/asm/kvm.h
> @@ -338,5 +338,26 @@ struct kvm_book3e_206_tlb_params {
> #define KVM_REG_PPC_IAC4 (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x5)
> #define KVM_REG_PPC_DAC1 (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x6)
> #define KVM_REG_PPC_DAC2 (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x7)
> +#define KVM_REG_PPC_DABR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x8)
> +#define KVM_REG_PPC_DSCR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x9)
> +#define KVM_REG_PPC_PURR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xa)
> +#define KVM_REG_PPC_SPURR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xb)
> +#define KVM_REG_PPC_DAR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc)
> +#define KVM_REG_PPC_DSISR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0xd)
> +#define KVM_REG_PPC_AMR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xe)
> +#define KVM_REG_PPC_UAMOR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xf)
> +
> +#define KVM_REG_PPC_MMCR0 (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x10)
> +#define KVM_REG_PPC_MMCR1 (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x11)
> +#define KVM_REG_PPC_MMCRA (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x12)
> +
> +#define KVM_REG_PPC_PMC1 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x18)
> +#define KVM_REG_PPC_PMC2 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x19)
> +#define KVM_REG_PPC_PMC3 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1a)
> +#define KVM_REG_PPC_PMC4 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1b)
> +#define KVM_REG_PPC_PMC5 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1c)
> +#define KVM_REG_PPC_PMC6 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1d)
> +#define KVM_REG_PPC_PMC7 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1e)
> +#define KVM_REG_PPC_PMC8 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1f)
>
> #endif /* __LINUX_KVM_POWERPC_H */
> diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
> index 83e929e..7fe5c9a 100644
> --- a/arch/powerpc/kvm/book3s_hv.c
> +++ b/arch/powerpc/kvm/book3s_hv.c
> @@ -538,11 +538,53 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
> int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
> {
> int r = -EINVAL;
> + long int i;
>
> switch (reg->id) {
> case KVM_REG_PPC_HIOR:
> r = put_user(0, (u64 __user *)reg->addr);
> break;
> + case KVM_REG_PPC_DABR:
> + r = put_user(vcpu->arch.dabr, (u64 __user *)reg->addr);
> + break;
> + case KVM_REG_PPC_DSCR:
> + r = put_user(vcpu->arch.dscr, (u64 __user *)reg->addr);
> + break;
> + case KVM_REG_PPC_PURR:
> + r = put_user(vcpu->arch.purr, (u64 __user *)reg->addr);
> + break;
> + case KVM_REG_PPC_SPURR:
> + r = put_user(vcpu->arch.spurr, (u64 __user *)reg->addr);
> + break;
> + case KVM_REG_PPC_DAR:
> + r = put_user(vcpu->arch.shregs.dar, (u64 __user *)reg->addr);
> + break;
> + case KVM_REG_PPC_DSISR:
> + r = put_user(vcpu->arch.shregs.dsisr, (u32 __user *)reg->addr);
> + break;
> + case KVM_REG_PPC_AMR:
> + r = put_user(vcpu->arch.amr, (u64 __user *)reg->addr);
> + break;
> + case KVM_REG_PPC_UAMOR:
> + r = put_user(vcpu->arch.uamor, (u64 __user *)reg->addr);
> + break;
> + case KVM_REG_PPC_MMCR0:
> + case KVM_REG_PPC_MMCR1:
> + case KVM_REG_PPC_MMCRA:
> + i = reg->id - KVM_REG_PPC_MMCR0;
> + r = put_user(vcpu->arch.mmcr[i], (u64 __user *)reg->addr);
> + break;
> + case KVM_REG_PPC_PMC1:
> + case KVM_REG_PPC_PMC2:
> + case KVM_REG_PPC_PMC3:
> + case KVM_REG_PPC_PMC4:
> + case KVM_REG_PPC_PMC5:
> + case KVM_REG_PPC_PMC6:
> + case KVM_REG_PPC_PMC7:
> + case KVM_REG_PPC_PMC8:
> + i = reg->id - KVM_REG_PPC_PMC1;
> + r = put_user(vcpu->arch.pmc[i], (u32 __user *)reg->addr);
> + break;
> default:
> break;
> }
> @@ -553,6 +595,9 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
> int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
> {
> int r = -EINVAL;
> + u64 val;
> + u32 wval;
> + long int i;
>
> switch (reg->id) {
> case KVM_REG_PPC_HIOR:
> @@ -564,6 +609,67 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
> r = -EINVAL;
> break;
> }
> + case KVM_REG_PPC_DABR:
> + r = get_user(val, (u64 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.dabr = val;
> + break;
> + case KVM_REG_PPC_DSCR:
> + r = get_user(val, (u64 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.dscr = val;
> + break;
> + case KVM_REG_PPC_PURR:
> + r = get_user(val, (u64 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.purr = val;
> + break;
> + case KVM_REG_PPC_SPURR:
> + r = get_user(val, (u64 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.spurr = val;
> + break;
> + case KVM_REG_PPC_DAR:
> + r = get_user(val, (u64 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.shregs.dar = val;
> + break;
> + case KVM_REG_PPC_DSISR:
> + r = get_user(wval, (u32 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.shregs.dsisr = wval;
> + break;
> + case KVM_REG_PPC_AMR:
> + r = get_user(val, (u64 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.amr = val;
> + break;
> + case KVM_REG_PPC_UAMOR:
> + r = get_user(val, (u64 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.uamor = val;
> + break;
> + case KVM_REG_PPC_MMCR0:
> + case KVM_REG_PPC_MMCR1:
> + case KVM_REG_PPC_MMCRA:
> + i = reg->id - KVM_REG_PPC_MMCR0;
> + r = get_user(val, (u64 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.mmcr[i] = val;
> + break;
> + case KVM_REG_PPC_PMC1:
> + case KVM_REG_PPC_PMC2:
> + case KVM_REG_PPC_PMC3:
> + case KVM_REG_PPC_PMC4:
> + case KVM_REG_PPC_PMC5:
> + case KVM_REG_PPC_PMC6:
> + case KVM_REG_PPC_PMC7:
> + case KVM_REG_PPC_PMC8:
> + i = reg->id - KVM_REG_PPC_PMC1;
> + r = get_user(wval, (u32 __user *)reg->addr);
> + if (!r)
> + vcpu->arch.pmc[i] = wval;
> + break;
> default:
> break;
> }
> --
> 1.7.10.rc3.219.g53414
>
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