cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pgalloc.h (1569B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_IA64_PGALLOC_H
      3#define _ASM_IA64_PGALLOC_H
      4
      5/*
      6 * This file contains the functions and defines necessary to allocate
      7 * page tables.
      8 *
      9 * This hopefully works with any (fixed) ia-64 page-size, as defined
     10 * in <asm/page.h> (currently 8192).
     11 *
     12 * Copyright (C) 1998-2001 Hewlett-Packard Co
     13 *	David Mosberger-Tang <davidm@hpl.hp.com>
     14 * Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com>
     15 */
     16
     17
     18#include <linux/compiler.h>
     19#include <linux/mm.h>
     20#include <linux/page-flags.h>
     21#include <linux/threads.h>
     22
     23#include <asm-generic/pgalloc.h>
     24
     25#include <asm/mmu_context.h>
     26
     27static inline pgd_t *pgd_alloc(struct mm_struct *mm)
     28{
     29	return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
     30}
     31
     32#if CONFIG_PGTABLE_LEVELS == 4
     33static inline void
     34p4d_populate(struct mm_struct *mm, p4d_t * p4d_entry, pud_t * pud)
     35{
     36	p4d_val(*p4d_entry) = __pa(pud);
     37}
     38
     39#define __pud_free_tlb(tlb, pud, address)	pud_free((tlb)->mm, pud)
     40#endif /* CONFIG_PGTABLE_LEVELS == 4 */
     41
     42static inline void
     43pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
     44{
     45	pud_val(*pud_entry) = __pa(pmd);
     46}
     47
     48#define __pmd_free_tlb(tlb, pmd, address)	pmd_free((tlb)->mm, pmd)
     49
     50static inline void
     51pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, pgtable_t pte)
     52{
     53	pmd_val(*pmd_entry) = page_to_phys(pte);
     54}
     55
     56static inline void
     57pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte)
     58{
     59	pmd_val(*pmd_entry) = __pa(pte);
     60}
     61
     62#define __pte_free_tlb(tlb, pte, address)	pte_free((tlb)->mm, pte)
     63
     64#endif				/* _ASM_IA64_PGALLOC_H */