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ptdesc: remove ptdesc_to_virt() 

This has the same effect as ptdesc_address() so convert the callers to use
that and delete the function.  Add kernel-doc for ptdesc_address().

Link: https://lkml.kernel.org/r/20250908171104.2409217-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2025-09-08 18:11:02 +01:00 committed by Andrew Morton
parent f0c92726e8
commit 90ec2df9dd
3 changed files with 10 additions and 9 deletions
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2
arch/arm/mm/mmu.c
View File

@ -737,7 +737,7 @@ static void *__init late_alloc(unsigned long sz)
if (!ptdesc || !pagetable_pte_ctor(NULL, ptdesc))
BUG();
return ptdesc_to_virt(ptdesc);
return ptdesc_address(ptdesc);
}
static pte_t * __init arm_pte_alloc(pmd_t *pmd, unsigned long addr,

6
arch/s390/mm/pgalloc.c
View File

@ -21,7 +21,7 @@ unsigned long *crst_table_alloc(struct mm_struct *mm)
if (!ptdesc)
return NULL;
table = ptdesc_to_virt(ptdesc);
table = ptdesc_address(ptdesc);
__arch_set_page_dat(table, 1UL << CRST_ALLOC_ORDER);
return table;
}
@ -119,7 +119,7 @@ struct ptdesc *page_table_alloc_pgste(struct mm_struct *mm)
ptdesc = pagetable_alloc(GFP_KERNEL, 0);
if (ptdesc) {
table = (u64 *)ptdesc_to_virt(ptdesc);
table = (u64 *)ptdesc_address(ptdesc);
__arch_set_page_dat(table, 1);
memset64(table, _PAGE_INVALID, PTRS_PER_PTE);
memset64(table + PTRS_PER_PTE, 0, PTRS_PER_PTE);
@ -146,7 +146,7 @@ unsigned long *page_table_alloc(struct mm_struct *mm)
pagetable_free(ptdesc);
return NULL;
}
table = ptdesc_to_virt(ptdesc);
table = ptdesc_address(ptdesc);
__arch_set_page_dat(table, 1);
memset64((u64 *)table, _PAGE_INVALID, PTRS_PER_PTE);
memset64((u64 *)table + PTRS_PER_PTE, 0, PTRS_PER_PTE);

11
include/linux/mm.h
View File

@ -2944,11 +2944,12 @@ static inline struct ptdesc *virt_to_ptdesc(const void *x)
return page_ptdesc(virt_to_page(x));
}
static inline void *ptdesc_to_virt(const struct ptdesc *pt)
{
return page_to_virt(ptdesc_page(pt));
}
/**
* ptdesc_address - Virtual address of page table.
* @pt: Page table descriptor.
*
* Return: The first byte of the page table described by @pt.
*/
static inline void *ptdesc_address(const struct ptdesc *pt)
{
return folio_address(ptdesc_folio(pt));