KVM: PPC: Book3S HV: Make the guest hash table size configurable

[pandora-kernel.git] / arch / powerpc / kvm / powerpc.c

diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 1493c8d..87f4dc8 100644 (file)
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -246,6 +246,7 @@ int kvm_dev_ioctl_check_extension(long ext)
 #endif
 #ifdef CONFIG_PPC_BOOK3S_64
        case KVM_CAP_SPAPR_TCE:
+       case KVM_CAP_PPC_ALLOC_HTAB:
                r = 1;
                break;
 #endif /* CONFIG_PPC_BOOK3S_64 */
@@ -802,6 +803,23 @@ long kvm_arch_vm_ioctl(struct file *filp,
                        r = -EFAULT;
                break;
        }
+
+       case KVM_PPC_ALLOCATE_HTAB: {
+               struct kvm *kvm = filp->private_data;
+               u32 htab_order;
+
+               r = -EFAULT;
+               if (get_user(htab_order, (u32 __user *)argp))
+                       break;
+               r = kvmppc_alloc_reset_hpt(kvm, &htab_order);
+               if (r)
+                       break;
+               r = -EFAULT;
+               if (put_user(htab_order, (u32 __user *)argp))
+                       break;
+               r = 0;
+               break;
+       }
 #endif /* CONFIG_KVM_BOOK3S_64_HV */
 
 #ifdef CONFIG_PPC_BOOK3S_64