Commit c22ca4a9 authored by Vishal Moola (Oracle)'s avatar Vishal Moola (Oracle) Committed by Dave Hansen
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x86/mm/pat: Convert pte code to use page table apis 



Use the ptdesc APIs for all page table allocation and free sites to allow
their separate allocation from struct page in the future. Convert the PTE
allocation and free sites to use the generic page table APIs, as they
already use ptdescs.

Pass through init_mm since these are kernel page tables; otherwise,
pte_alloc_one_kernel() becomes a no-op.

Signed-off-by: default avatarVishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
Acked-by: default avatarMike Rapoport (Microsoft) <rppt@kernel.org>
Link: https://patch.msgid.link/20260303194828.1406905-2-vishal.moola@gmail.com
parent 11439c46

arch/x86/mm/pat/set_memory.c

+2 −2
Original line number Diff line number Diff line
@@ -1408,7 +1408,7 @@ static bool try_to_free_pte_page(pte_t *pte) 
		if (!pte_none(pte[i]))

			return false;



	free_page((unsigned long)pte);

	pte_free_kernel(&init_mm, pte);

	return true;

}
@@ -1539,7 +1539,7 @@ static void unmap_pud_range(p4d_t *p4d, unsigned long start, unsigned long end) 


static int alloc_pte_page(pmd_t *pmd)

{

	pte_t *pte = (pte_t *)get_zeroed_page(GFP_KERNEL);

	pte_t *pte = pte_alloc_one_kernel(&init_mm);

	if (!pte)

		return -1;