return freelist;
}
-static void free_pagetable(struct protection_domain *domain)
+static void free_pagetable(struct domain_pgtable *pgtable)
{
- struct domain_pgtable pgtable;
struct page *freelist = NULL;
unsigned long root;
- amd_iommu_domain_get_pgtable(domain, &pgtable);
- atomic64_set(&domain->pt_root, 0);
+ if (pgtable->mode == PAGE_MODE_NONE)
+ return;
- BUG_ON(pgtable.mode < PAGE_MODE_NONE ||
- pgtable.mode > PAGE_MODE_6_LEVEL);
+ BUG_ON(pgtable->mode < PAGE_MODE_NONE ||
+ pgtable->mode > PAGE_MODE_6_LEVEL);
- root = (unsigned long)pgtable.root;
- freelist = free_sub_pt(root, pgtable.mode, freelist);
+ root = (unsigned long)pgtable->root;
+ freelist = free_sub_pt(root, pgtable->mode, freelist);
free_page_list(freelist);
}
*/
static void dma_ops_domain_free(struct protection_domain *domain)
{
+ struct domain_pgtable pgtable;
+
if (!domain)
return;
iommu_put_dma_cookie(&domain->domain);
- free_pagetable(domain);
+ amd_iommu_domain_get_pgtable(domain, &pgtable);
+ atomic64_set(&domain->pt_root, 0);
+ free_pagetable(&pgtable);
if (domain->id)
domain_id_free(domain->id);
break;
default:
amd_iommu_domain_get_pgtable(domain, &pgtable);
-
- if (pgtable.mode != PAGE_MODE_NONE)
- free_pagetable(domain);
+ atomic64_set(&domain->pt_root, 0);
+ free_pagetable(&pgtable);
if (domain->flags & PD_IOMMUV2_MASK)
free_gcr3_table(domain);
struct protection_domain *domain = to_pdomain(dom);
struct domain_pgtable pgtable;
unsigned long flags;
- u64 pt_root;
spin_lock_irqsave(&domain->lock, flags);
amd_iommu_domain_get_pgtable(domain, &pgtable);
/* Update data structure */
- pt_root = amd_iommu_domain_encode_pgtable(NULL, PAGE_MODE_NONE);
- atomic64_set(&domain->pt_root, pt_root);
+ atomic64_set(&domain->pt_root, 0);
/* Make changes visible to IOMMUs */
update_domain(domain);
- /* Restore old pgtable in domain->ptroot to free page-table */
- pt_root = amd_iommu_domain_encode_pgtable(pgtable.root, pgtable.mode);
- atomic64_set(&domain->pt_root, pt_root);
-
/* Page-table is not visible to IOMMU anymore, so free it */
- free_pagetable(domain);
+ free_pagetable(&pgtable);
spin_unlock_irqrestore(&domain->lock, flags);
}