Commit 66aebe56 authored by Vishal Moola (Oracle)'s avatar Vishal Moola (Oracle) Committed by Geert Uytterhoeven
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m68k: mm: Convert init_pointer_table() to use ptdescs 



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: default avatar"Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Reviewed-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/20250611001255.527952-4-vishal.moola@gmail.com


Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
parent 5bea6468

arch/m68k/mm/motorola.c

+6 −6
Original line number Diff line number Diff line
@@ -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;

}