void p2m_teardown(struct domain *d)
{
struct p2m_domain *p2m = &d->arch.p2m;
struct page_info *pg;
spin_lock(&p2m->lock);
while ( (pg = page_list_remove_head(&p2m->pages)) )
free_domheap_page(pg);
p2m->first_level = NULL;
spin_unlock(&p2m->lock);
}
void p2m_teardown(struct p2m_domain *p2m)
/* Return all the p2m pages to Xen.
* We know we don't have any extra mappings to these pages */
{
struct page_info *pg;
struct domain *d;
if (p2m == NULL)
return;
d = p2m->domain;
p2m_lock(p2m);
ASSERT(atomic_read(&d->shr_pages) == 0);
p2m->phys_table = pagetable_null();
while ( (pg = page_list_remove_head(&p2m->pages)) )
d->arch.paging.free_page(d, pg);
p2m_unlock(p2m);
}
int arch_iommu_populate_page_table(struct domain *d)
{
const struct domain_iommu *hd = dom_iommu(d);
struct page_info *page;
int rc = 0, n = 0;
d->need_iommu = -1;
this_cpu(iommu_dont_flush_iotlb) = 1;
spin_lock(&d->page_alloc_lock);
if ( unlikely(d->is_dying) )
rc = -ESRCH;
while ( !rc && (page = page_list_remove_head(&d->page_list)) )
{
if ( has_hvm_container_domain(d) ||
(page->u.inuse.type_info & PGT_type_mask) == PGT_writable_page )
{
unsigned long mfn = page_to_mfn(page);
unsigned long gfn = mfn_to_gmfn(d, mfn);
if ( gfn != gfn_x(INVALID_GFN) )
{
ASSERT(!(gfn >> DEFAULT_DOMAIN_ADDRESS_WIDTH));
BUG_ON(SHARED_M2P(gfn));
rc = hd->platform_ops->map_page(d, gfn, mfn,
IOMMUF_readable |
IOMMUF_writable);
}
if ( rc )
{
page_list_add(page, &d->page_list);
break;
}
}
