Re: [PATCH v13 04/11] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pud_clear()

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On Wed, 12 Feb 2025 03:13:57 +1100 Andrew Donnellan <ajd@xxxxxxxxxxxxx> wrote:

> This reverts commit 931c38e16499 ("mm/page_table_check: remove unused
> parameter in [__]page_table_check_pud_clear").
> 
> Reinstate previously unused parameters for the purpose of supporting
> powerpc platforms, as many do not encode user/kernel ownership of the
> page in the pte, but instead in the address of the access.

My x86-64 allmodconfig exploded.

./arch/x86/include/asm/pgtable.h: In function 'pudp_establish':
./arch/x86/include/asm/pgtable.h:1443:46: error: passing argument 2 of 'page_table_check_pud_set' makes integer from pointer without a cast [-Werror=int-conversion]
 1443 |         page_table_check_pud_set(vma->vm_mm, pudp, pud);
      |                                              ^~~~
      |                                              |
      |                                              pud_t *



#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
static inline pud_t pudp_establish(struct vm_area_struct *vma,
                unsigned long address, pud_t *pudp, pud_t pud)
{
	page_table_check_pud_set(vma->vm_mm, pudp, pud);
	...




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