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>
---
v2: use case a...b: notation for MMCR0/1/A and PMCs
Documentation/virtual/kvm/api.txt | 19 ++++++++
arch/powerpc/include/asm/kvm.h | 21 +++++++++
arch/powerpc/kvm/book3s_hv.c | 88 +++++++++++++++++++++++++++++++++++++
3 files changed, 128 insertions(+)
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index a12f4e4..407556f 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -1740,6 +1740,25 @@ registers, find a list below:
PPC | KVM_REG_PPC_IAC4 | 64
PPC | KVM_REG_PPC_DAC1 | 64
PPC | KVM_REG_PPC_DAC2 | 64
+ PPC | KVM_REG_PPC_DABR | 64
+ PPC | KVM_REG_PPC_DSCR | 64
+ PPC | KVM_REG_PPC_PURR | 64
+ PPC | KVM_REG_PPC_SPURR | 64
+ PPC | KVM_REG_PPC_DAR | 64
+ PPC | KVM_REG_PPC_DSISR | 32
+ PPC | KVM_REG_PPC_AMR | 64
+ PPC | KVM_REG_PPC_UAMOR | 64
+ PPC | KVM_REG_PPC_MMCR0 | 64
+ PPC | KVM_REG_PPC_MMCR1 | 64
+ PPC | KVM_REG_PPC_MMCRA | 64
+ PPC | KVM_REG_PPC_PMC1 | 32
+ PPC | KVM_REG_PPC_PMC2 | 32
+ PPC | KVM_REG_PPC_PMC3 | 32
+ PPC | KVM_REG_PPC_PMC4 | 32
+ PPC | KVM_REG_PPC_PMC5 | 32
+ PPC | KVM_REG_PPC_PMC6 | 32
+ PPC | KVM_REG_PPC_PMC7 | 32
+ PPC | KVM_REG_PPC_PMC8 | 32
4.69 KVM_GET_ONE_REG
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 38c7f1b..c4b5636 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -547,11 +547,44 @@ 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 ... 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 ... 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;
}
@@ -562,6 +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:
@@ -573,6 +609,58 @@ 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 ... 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 ... 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
--
To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
