cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

page.h (2397B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ALPHA_PAGE_H
      3#define _ALPHA_PAGE_H
      4
      5#include <linux/const.h>
      6#include <asm/pal.h>
      7
      8/* PAGE_SHIFT determines the page size */
      9#define PAGE_SHIFT	13
     10#define PAGE_SIZE	(_AC(1,UL) << PAGE_SHIFT)
     11#define PAGE_MASK	(~(PAGE_SIZE-1))
     12
     13#ifndef __ASSEMBLY__
     14
     15#define STRICT_MM_TYPECHECKS
     16
     17extern void clear_page(void *page);
     18#define clear_user_page(page, vaddr, pg)	clear_page(page)
     19
     20#define alloc_zeroed_user_highpage_movable(vma, vaddr) \
     21	alloc_page_vma(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, vma, vaddr)
     22#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE_MOVABLE
     23
     24extern void copy_page(void * _to, void * _from);
     25#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
     26
     27#ifdef STRICT_MM_TYPECHECKS
     28/*
     29 * These are used to make use of C type-checking..
     30 */
     31typedef struct { unsigned long pte; } pte_t;
     32typedef struct { unsigned long pmd; } pmd_t;
     33typedef struct { unsigned long pgd; } pgd_t;
     34typedef struct { unsigned long pgprot; } pgprot_t;
     35
     36#define pte_val(x)	((x).pte)
     37#define pmd_val(x)	((x).pmd)
     38#define pgd_val(x)	((x).pgd)
     39#define pgprot_val(x)	((x).pgprot)
     40
     41#define __pte(x)	((pte_t) { (x) } )
     42#define __pmd(x)	((pmd_t) { (x) } )
     43#define __pgd(x)	((pgd_t) { (x) } )
     44#define __pgprot(x)	((pgprot_t) { (x) } )
     45
     46#else
     47/*
     48 * .. while these make it easier on the compiler
     49 */
     50typedef unsigned long pte_t;
     51typedef unsigned long pmd_t;
     52typedef unsigned long pgd_t;
     53typedef unsigned long pgprot_t;
     54
     55#define pte_val(x)	(x)
     56#define pmd_val(x)	(x)
     57#define pgd_val(x)	(x)
     58#define pgprot_val(x)	(x)
     59
     60#define __pte(x)	(x)
     61#define __pgd(x)	(x)
     62#define __pgprot(x)	(x)
     63
     64#endif /* STRICT_MM_TYPECHECKS */
     65
     66typedef struct page *pgtable_t;
     67
     68#ifdef USE_48_BIT_KSEG
     69#define PAGE_OFFSET		0xffff800000000000UL
     70#else
     71#define PAGE_OFFSET		0xfffffc0000000000UL
     72#endif
     73
     74#else
     75
     76#ifdef USE_48_BIT_KSEG
     77#define PAGE_OFFSET		0xffff800000000000
     78#else
     79#define PAGE_OFFSET		0xfffffc0000000000
     80#endif
     81
     82#endif /* !__ASSEMBLY__ */
     83
     84#define __pa(x)			((unsigned long) (x) - PAGE_OFFSET)
     85#define __va(x)			((void *)((unsigned long) (x) + PAGE_OFFSET))
     86
     87#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
     88#define virt_addr_valid(kaddr)	pfn_valid((__pa(kaddr) >> PAGE_SHIFT))
     89
     90#ifdef CONFIG_FLATMEM
     91#define pfn_valid(pfn)		((pfn) < max_mapnr)
     92#endif /* CONFIG_FLATMEM */
     93
     94#include <asm-generic/memory_model.h>
     95#include <asm-generic/getorder.h>
     96
     97#endif /* _ALPHA_PAGE_H */