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_64.h (2764B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _SPARC64_PGALLOC_H
      3#define _SPARC64_PGALLOC_H
      4
      5#include <linux/kernel.h>
      6#include <linux/sched.h>
      7#include <linux/mm.h>
      8#include <linux/slab.h>
      9
     10#include <asm/spitfire.h>
     11#include <asm/cpudata.h>
     12#include <asm/cacheflush.h>
     13#include <asm/page.h>
     14
     15/* Page table allocation/freeing. */
     16
     17extern struct kmem_cache *pgtable_cache;
     18
     19static inline void __p4d_populate(p4d_t *p4d, pud_t *pud)
     20{
     21	p4d_set(p4d, pud);
     22}
     23
     24#define p4d_populate(MM, P4D, PUD)	__p4d_populate(P4D, PUD)
     25
     26static inline pgd_t *pgd_alloc(struct mm_struct *mm)
     27{
     28	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
     29}
     30
     31static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
     32{
     33	kmem_cache_free(pgtable_cache, pgd);
     34}
     35
     36static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
     37{
     38	pud_set(pud, pmd);
     39}
     40
     41#define pud_populate(MM, PUD, PMD)	__pud_populate(PUD, PMD)
     42
     43static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
     44{
     45	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
     46}
     47
     48static inline void pud_free(struct mm_struct *mm, pud_t *pud)
     49{
     50	kmem_cache_free(pgtable_cache, pud);
     51}
     52
     53static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
     54{
     55	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
     56}
     57
     58static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
     59{
     60	kmem_cache_free(pgtable_cache, pmd);
     61}
     62
     63pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
     64pgtable_t pte_alloc_one(struct mm_struct *mm);
     65void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
     66void pte_free(struct mm_struct *mm, pgtable_t ptepage);
     67
     68#define pmd_populate_kernel(MM, PMD, PTE)	pmd_set(MM, PMD, PTE)
     69#define pmd_populate(MM, PMD, PTE)		pmd_set(MM, PMD, PTE)
     70
     71void pgtable_free(void *table, bool is_page);
     72
     73#ifdef CONFIG_SMP
     74
     75struct mmu_gather;
     76void tlb_remove_table(struct mmu_gather *, void *);
     77
     78static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
     79{
     80	unsigned long pgf = (unsigned long)table;
     81	if (is_page)
     82		pgf |= 0x1UL;
     83	tlb_remove_table(tlb, (void *)pgf);
     84}
     85
     86static inline void __tlb_remove_table(void *_table)
     87{
     88	void *table = (void *)((unsigned long)_table & ~0x1UL);
     89	bool is_page = false;
     90
     91	if ((unsigned long)_table & 0x1UL)
     92		is_page = true;
     93	pgtable_free(table, is_page);
     94}
     95#else /* CONFIG_SMP */
     96static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
     97{
     98	pgtable_free(table, is_page);
     99}
    100#endif /* !CONFIG_SMP */
    101
    102static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
    103				  unsigned long address)
    104{
    105	pgtable_free_tlb(tlb, pte, true);
    106}
    107
    108#define __pmd_free_tlb(tlb, pmd, addr)		      \
    109	pgtable_free_tlb(tlb, pmd, false)
    110
    111#define __pud_free_tlb(tlb, pud, addr)		      \
    112	pgtable_free_tlb(tlb, pud, false)
    113
    114#endif /* _SPARC64_PGALLOC_H */