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m68k: mm: Convert init_pointer_table() to use ptdescs

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Motorola uses init_pointer_table() for page tables, so it should be using
struct ptdesc, not struct page.

This helps us prepare to allocate ptdescs as their own memory
descriptor, and prepares to remove a user of page->lru.

Signed-off-by: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/20250611001255.527952-4-vishal.moola@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Vishal Moola (Oracle) 2025-06-10 17:12:54 -07:00 • committed by Geert Uytterhoeven
parent 5bea64689d
commit 66aebe56de
1 changed files with 6 additions and 6 deletions
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12
arch/m68k/mm/motorola.c
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@ -121,10 +121,10 @@ void __init init_pointer_table(void *table, int type)
{
ptable_desc *dp;
unsigned long ptable = (unsigned long)table;
unsigned long page = ptable & PAGE_MASK;
unsigned int mask = 1U << ((ptable - page)/ptable_size(type));
unsigned long pt_addr = ptable & PAGE_MASK;
unsigned int mask = 1U << ((ptable - pt_addr)/ptable_size(type));
dp = PD_PTABLE(page);
dp = PD_PTABLE(pt_addr);
if (!(PD_MARKBITS(dp) & mask)) {
PD_MARKBITS(dp) = ptable_mask(type);
list_add(dp, &ptable_list[type]);
@ -133,9 +133,9 @@ void __init init_pointer_table(void *table, int type)
PD_MARKBITS(dp) &= ~mask;
pr_debug("init_pointer_table: %lx, %x\n", ptable, PD_MARKBITS(dp));
/* unreserve the page so it's possible to free that page */
__ClearPageReserved(PD_PAGE(dp));
init_page_count(PD_PAGE(dp));
/* unreserve the ptdesc so it's possible to free that ptdesc */
__ClearPageReserved(ptdesc_page(PD_PTDESC(dp)));
init_page_count(ptdesc_page(PD_PTDESC(dp)));
return;
}