struct page *p;
/* High level code is not ready for clflush yet */
- if (0 && cpu_has_clflush) {
+ if (cpu_has_clflush) {
list_for_each_entry (p, lh, lru)
cache_flush_page(p);
} else if (boot_cpu_data.x86_model >= 4)
ref_prot));
}
+static inline void save_page(struct page *kpte_page)
+{
+ if (!test_and_set_bit(PG_arch_1, &kpte_page->flags))
+ list_add(&kpte_page->lru, &df_list);
+}
+
static int
__change_page_attr(struct page *page, pgprot_t prot)
{
if (!kpte)
return -EINVAL;
kpte_page = virt_to_page(kpte);
+ BUG_ON(PageLRU(kpte_page));
+ BUG_ON(PageCompound(kpte_page));
+
if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) {
if (!pte_huge(*kpte)) {
set_pte_atomic(kpte, mk_pte(page, prot));
* time (not via split_large_page) and in turn we must not
* replace it with a largepage.
*/
+
+ save_page(kpte_page);
if (!PageReserved(kpte_page)) {
if (cpu_has_pse && (page_private(kpte_page) == 0)) {
- ClearPagePrivate(kpte_page);
paravirt_release_pt(page_to_pfn(kpte_page));
- list_add(&kpte_page->lru, &df_list);
revert_page(kpte_page, address);
}
}
spin_unlock_irq(&cpa_lock);
flush_map(&l);
list_for_each_entry_safe(pg, next, &l, lru) {
+ list_del(&pg->lru);
+ clear_bit(PG_arch_1, &pg->flags);
+ if (PageReserved(pg) || !cpu_has_pse || page_private(pg) != 0)
+ continue;
+ ClearPagePrivate(pg);
__free_page(pg);
}
}