tpmif_t *tpmif;
tpmif = kmem_cache_alloc(tpmif_cachep, GFP_KERNEL);
- if (!tpmif)
- return ERR_PTR(-ENOMEM);
+ if (tpmif == NULL)
+ goto out_of_memory;
memset(tpmif, 0, sizeof (*tpmif));
tpmif->domid = domid;
snprintf(tpmif->devname, sizeof(tpmif->devname), "tpmif%d", domid);
atomic_set(&tpmif->refcnt, 1);
- tpmif->pagerange = balloon_alloc_empty_page_range(TPMIF_TX_RING_SIZE);
- BUG_ON(tpmif->pagerange == NULL);
- tpmif->mmap_vstart = (unsigned long)pfn_to_kaddr(
- page_to_pfn(tpmif->pagerange));
+ tpmif->mmap_pages = alloc_empty_pages_and_pagevec(TPMIF_TX_RING_SIZE);
+ if (tpmif->mmap_pages == NULL)
+ goto out_of_memory;
list_add(&tpmif->tpmif_list, &tpmif_list);
num_frontends++;
return tpmif;
+
+ out_of_memory:
+ if (tpmif != NULL)
+ kmem_cache_free(tpmif_cachep, tpmif);
+ printk("%s: out of memory\n", __FUNCTION__);
+ return ERR_PTR(-ENOMEM);
}
static void free_tpmif(tpmif_t * tpmif)
{
num_frontends--;
list_del(&tpmif->tpmif_list);
- balloon_dealloc_empty_page_range(tpmif->pagerange, TPMIF_TX_RING_SIZE);
+ free_empty_pages_and_pagevec(tpmif->mmap_pages, TPMIF_TX_RING_SIZE);
kmem_cache_free(tpmif_cachep, tpmif);
}