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// SPDX-License-Identifier: GPL-2.0
#include <asm/pgalloc.h>
#include <linux/gfp.h>
#include <linux/kernel.h>
#include <linux/pgtable.h>
#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
int p4d_set_huge(p4d_t *p4d, phys_addr_t addr, pgprot_t prot)
{
return 0;
}
void p4d_clear_huge(p4d_t *p4d)
{
}
int pud_set_huge(pud_t *pud, phys_addr_t phys, pgprot_t prot)
{
pud_t new_pud = pfn_pud(__phys_to_pfn(phys), prot);
set_pud(pud, new_pud);
return 1;
}
int pud_clear_huge(pud_t *pud)
{
if (!pud_leaf(READ_ONCE(*pud)))
return 0;
pud_clear(pud);
return 1;
}
int pud_free_pmd_page(pud_t *pud, unsigned long addr)
{
pmd_t *pmd = pud_pgtable(*pud);
int i;
pud_clear(pud);
flush_tlb_kernel_range(addr, addr + PUD_SIZE);
for (i = 0; i < PTRS_PER_PMD; i++) {
if (!pmd_none(pmd[i])) {
pte_t *pte = (pte_t *)pmd_page_vaddr(pmd[i]);
pte_free_kernel(NULL, pte);
}
}
pmd_free(NULL, pmd);
return 1;
}
int pmd_set_huge(pmd_t *pmd, phys_addr_t phys, pgprot_t prot)
{
pmd_t new_pmd = pfn_pmd(__phys_to_pfn(phys), prot);
set_pmd(pmd, new_pmd);
return 1;
}
int pmd_clear_huge(pmd_t *pmd)
{
if (!pmd_leaf(READ_ONCE(*pmd)))
return 0;
pmd_clear(pmd);
return 1;
}
int pmd_free_pte_page(pmd_t *pmd, unsigned long addr)
{
pte_t *pte = (pte_t *)pmd_page_vaddr(*pmd);
pmd_clear(pmd);
flush_tlb_kernel_range(addr, addr + PMD_SIZE);
pte_free_kernel(NULL, pte);
return 1;
}
#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */
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