The following commit has been merged into the x86/mm branch of tip:

Commit-ID:     9c453f8784dc033a35d06dff929be1eaedb3020c
Gitweb:        https://git.kernel.org/tip/9c453f8784dc033a35d06dff929be1eaedb3020c
Author:        Vishal Moola <vishal.moola@gmail.com>
AuthorDate:    Mon, 29 Jun 2026 11:57:39 -07:00
Committer:     Dave Hansen <dave.hansen@linux.intel.com>
CommitterDate: Mon, 13 Jul 2026 15:55:10 -07:00

x86/mm: Convert sync_global_pgds_l4() to ptdescs

Convert sync_global_pgds_l4() to ptdescs in preparation for the
eventual splitting of ptdescs from struct page.

Signed-off-by: Vishal Moola <vishal.moola@gmail.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: William Kucharski <william.kucharski@linux.dev>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Link: https://patch.msgid.link/20260629185742.126987-7-vishal.moola@gmail.com
---
 arch/x86/mm/init_64.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index a097ec1..1441f5f 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -174,7 +174,7 @@ static void sync_global_pgds_l4(unsigned long start, unsigned long end)
 	for (addr = start; addr <= end; addr = ALIGN(addr + 1, PGDIR_SIZE)) {
 		pgd_t *pgd_ref = pgd_offset_k(addr);
 		const p4d_t *p4d_ref;
-		struct page *page;
+		struct ptdesc *ptdesc;
 
 		/*
 		 * With folded p4d, pgd_none() is always false, we need to
@@ -187,15 +187,15 @@ static void sync_global_pgds_l4(unsigned long start, unsigned long end)
 			continue;
 
 		spin_lock(&pgd_lock);
-		list_for_each_entry(page, &pgd_list, lru) {
+		list_for_each_entry(ptdesc, &pgd_list, pt_list) {
 			pgd_t *pgd;
 			p4d_t *p4d;
 			spinlock_t *pgt_lock;
 
-			pgd = (pgd_t *)page_address(page) + pgd_index(addr);
+			pgd = (pgd_t *)ptdesc_address(ptdesc) + pgd_index(addr);
 			p4d = p4d_offset(pgd, addr);
 			/* the pgt_lock only for Xen */
-			pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
+			pgt_lock = &pgd_page_get_mm(ptdesc_page(ptdesc))->page_table_lock;
 			spin_lock(pgt_lock);
 
 			if (!p4d_none(*p4d_ref) && !p4d_none(*p4d))