diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv.c')
-rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 907935764de0..59c296743595 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1093,115 +1093,6 @@ int kvmppc_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu) return r; } -static long kvmppc_stt_npages(unsigned long window_size) -{ - return ALIGN((window_size >> SPAPR_TCE_SHIFT) - * sizeof(u64), PAGE_SIZE) / PAGE_SIZE; -} - -static void release_spapr_tce_table(struct kvmppc_spapr_tce_table *stt) -{ - struct kvm *kvm = stt->kvm; - int i; - - mutex_lock(&kvm->lock); - list_del(&stt->list); - for (i = 0; i < kvmppc_stt_npages(stt->window_size); i++) - __free_page(stt->pages[i]); - kfree(stt); - mutex_unlock(&kvm->lock); - - kvm_put_kvm(kvm); -} - -static int kvm_spapr_tce_fault(struct vm_area_struct *vma, struct vm_fault *vmf) -{ - struct kvmppc_spapr_tce_table *stt = vma->vm_file->private_data; - struct page *page; - - if (vmf->pgoff >= kvmppc_stt_npages(stt->window_size)) - return VM_FAULT_SIGBUS; - - page = stt->pages[vmf->pgoff]; - get_page(page); - vmf->page = page; - return 0; -} - -static const struct vm_operations_struct kvm_spapr_tce_vm_ops = { - .fault = kvm_spapr_tce_fault, -}; - -static int kvm_spapr_tce_mmap(struct file *file, struct vm_area_struct *vma) -{ - vma->vm_ops = &kvm_spapr_tce_vm_ops; - return 0; -} - -static int kvm_spapr_tce_release(struct inode *inode, struct file *filp) -{ - struct kvmppc_spapr_tce_table *stt = filp->private_data; - - release_spapr_tce_table(stt); - return 0; -} - -static struct file_operations kvm_spapr_tce_fops = { - .mmap = kvm_spapr_tce_mmap, - .release = kvm_spapr_tce_release, -}; - -long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, - struct kvm_create_spapr_tce *args) -{ - struct kvmppc_spapr_tce_table *stt = NULL; - long npages; - int ret = -ENOMEM; - int i; - - /* Check this LIOBN hasn't been previously allocated */ - list_for_each_entry(stt, &kvm->arch.spapr_tce_tables, list) { - if (stt->liobn == args->liobn) - return -EBUSY; - } - - npages = kvmppc_stt_npages(args->window_size); - - stt = kzalloc(sizeof(*stt) + npages* sizeof(struct page *), - GFP_KERNEL); - if (!stt) - goto fail; - - stt->liobn = args->liobn; - stt->window_size = args->window_size; - stt->kvm = kvm; - - for (i = 0; i < npages; i++) { - stt->pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO); - if (!stt->pages[i]) - goto fail; - } - - kvm_get_kvm(kvm); - - mutex_lock(&kvm->lock); - list_add(&stt->list, &kvm->arch.spapr_tce_tables); - - mutex_unlock(&kvm->lock); - - return anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops, - stt, O_RDWR); - -fail: - if (stt) { - for (i = 0; i < npages; i++) - if (stt->pages[i]) - __free_page(stt->pages[i]); - - kfree(stt); - } - return ret; -} /* Work out RMLS (real mode limit selector) field value for a given RMA size. Assumes POWER7 or PPC970. */ |