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 (1015B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_POWERPC_PGALLOC_32_H
      3#define _ASM_POWERPC_PGALLOC_32_H
      4
      5#include <linux/threads.h>
      6#include <linux/slab.h>
      7
      8/*
      9 * We don't have any real pmd's, and this code never triggers because
     10 * the pgd will always be present..
     11 */
     12/* #define pmd_alloc_one(mm,address)       ({ BUG(); ((pmd_t *)2); }) */
     13#define pmd_free(mm, x) 		do { } while (0)
     14#define __pmd_free_tlb(tlb,x,a)		do { } while (0)
     15/* #define pgd_populate(mm, pmd, pte)      BUG() */
     16
     17static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp,
     18				       pte_t *pte)
     19{
     20	if (IS_ENABLED(CONFIG_BOOKE))
     21		*pmdp = __pmd((unsigned long)pte | _PMD_PRESENT);
     22	else
     23		*pmdp = __pmd(__pa(pte) | _PMD_PRESENT);
     24}
     25
     26static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp,
     27				pgtable_t pte_page)
     28{
     29	if (IS_ENABLED(CONFIG_BOOKE))
     30		*pmdp = __pmd((unsigned long)pte_page | _PMD_PRESENT);
     31	else
     32		*pmdp = __pmd(__pa(pte_page) | _PMD_USER | _PMD_PRESENT);
     33}
     34
     35#endif /* _ASM_POWERPC_PGALLOC_32_H */