From 46ee485bb9dee952cab3e7b22138b9ad0e5cb468 Mon Sep 17 00:00:00 2001 From: Vishal Moola Date: Mon, 29 Jun 2026 11:57:37 -0700 Subject: [PATCH] x86/mm: Convert arch_sync_kernel_mappings() to ptdescs Convert arch_sync_kernel_mappings() to ptdescs in preparation for the eventual splitting of ptdescs from struct page. Following this patch, we can successfully boot a 32-bit x86 kernel with separately allocated ptdescs. Signed-off-by: Vishal Moola Signed-off-by: Dave Hansen Reviewed-by: William Kucharski Acked-by: Mike Rapoport (Microsoft) Link: https://patch.msgid.link/20260629185742.126987-5-vishal.moola@gmail.com --- arch/x86/mm/fault.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 45b99c3b1442..c31ffeac0714 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -275,17 +275,17 @@ void arch_sync_kernel_mappings(unsigned long start, unsigned long end) for (addr = start & PMD_MASK; addr >= TASK_SIZE_MAX && addr < VMALLOC_END; addr += PMD_SIZE) { - struct page *page; + struct ptdesc *ptdesc; spin_lock(&pgd_lock); - list_for_each_entry(page, &pgd_list, lru) { + list_for_each_entry(ptdesc, &pgd_list, pt_list) { spinlock_t *pgt_lock; /* 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); - vmalloc_sync_one(page_address(page), addr); + vmalloc_sync_one(ptdesc_address(ptdesc), addr); spin_unlock(pgt_lock); } spin_unlock(&pgd_lock);