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x86/mm/pat: Convert collapse_pmd_page() to ptdescs

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Convert collapse_pmd_page() 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/20260629185742.126987-4-vishal.moola@gmail.com
This commit is contained in:
Vishal Moola 2026-06-29 11:57:36 -07:00 committed by Dave Hansen
parent e27d938b0d
commit 5fcb2abffe
1 changed files with 3 additions and 3 deletions
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6
arch/x86/mm/pat/set_memory.c
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@ -1297,11 +1297,11 @@ static int collapse_pmd_page(pmd_t *pmd, unsigned long addr,
list_add(&page_ptdesc(pmd_page(old_pmd))->pt_list, pgtables);
if (IS_ENABLED(CONFIG_X86_32)) {
struct page *page;
struct ptdesc *ptdesc;
/* Update all PGD tables to use the same large page */
list_for_each_entry(page, &pgd_list, lru) {
pgd_t *pgd = (pgd_t *)page_address(page) + pgd_index(addr);
list_for_each_entry(ptdesc, &pgd_list, pt_list) {
pgd_t *pgd = (pgd_t *)ptdesc_address(ptdesc) + pgd_index(addr);
p4d_t *p4d = p4d_offset(pgd, addr);
pud_t *pud = pud_offset(p4d, addr);
pmd_t *pmd = pmd_offset(pud, addr);