Add a pointer to the pagetable to the pkram_super_block page.
Signed-off-by: Anthony Yznaga <anthony.yznaga@xxxxxxxxxx>
---
mm/pkram.c | 20 +++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/mm/pkram.c b/mm/pkram.c
index 5a7b8f61a55d..54b2779d0813 100644
--- a/mm/pkram.c
+++ b/mm/pkram.c
@@ -94,6 +94,7 @@ struct pkram_node {
*/
struct pkram_super_block {
__u64 node_pfn; /* first element of the node list */
+ __u64 pgd_pfn;
};
static unsigned long pkram_sb_pfn __initdata;
@@ -769,15 +770,20 @@ static void __pkram_reboot(void)
struct page *page;
struct pkram_node *node;
unsigned long node_pfn = 0;
-
- list_for_each_entry_reverse(page, &pkram_nodes, lru) {
- node = page_address(page);
- if (WARN_ON(node->flags & PKRAM_ACCMODE_MASK))
- continue;
- node->node_pfn = node_pfn;
- node_pfn = page_to_pfn(page);
+ unsigned long pgd_pfn = 0;
+
+ if (pkram_pgd) {
+ list_for_each_entry_reverse(page, &pkram_nodes, lru) {
+ node = page_address(page);
+ if (WARN_ON(node->flags & PKRAM_ACCMODE_MASK))
+ continue;
+ node->node_pfn = node_pfn;
+ node_pfn = page_to_pfn(page);
+ }
+ pgd_pfn = page_to_pfn(virt_to_page(pkram_pgd));
}
pkram_sb->node_pfn = node_pfn;
+ pkram_sb->pgd_pfn = pgd_pfn;
}
static int pkram_reboot(struct notifier_block *notifier,
--
2.13.3
