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-rw-r--r--arch/powerpc/kvm/book3s_hv.c8
-rw-r--r--include/uapi/linux/kvm.h3
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 1182cfd79857..f62ad2e9085f 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -3331,6 +3331,14 @@ static int kvm_vm_ioctl_get_smmu_info_hv(struct kvm *kvm,
if (radix_enabled())
return -EINVAL;
+ /*
+ * POWER7, POWER8 and POWER9 all support 32 storage keys for data.
+ * POWER7 doesn't support keys for instruction accesses,
+ * POWER8 and POWER9 do.
+ */
+ info->data_keys = 32;
+ info->instr_keys = cpu_has_feature(CPU_FTR_ARCH_207S) ? 32 : 0;
+
info->flags = KVM_PPC_PAGE_SIZES_REAL;
if (mmu_has_feature(MMU_FTR_1T_SEGMENT))
info->flags |= KVM_PPC_1T_SEGMENTS;
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 6cd63c18708a..838887587411 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -711,7 +711,8 @@ struct kvm_ppc_one_seg_page_size {
struct kvm_ppc_smmu_info {
__u64 flags;
__u32 slb_size;
- __u32 pad;
+ __u16 data_keys; /* # storage keys supported for data */
+ __u16 instr_keys; /* # storage keys supported for instructions */
struct kvm_ppc_one_seg_page_size sps[KVM_PPC_PAGE_SIZES_MAX_SZ];
};