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

pfn.h (666B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_PFN_H_
      3#define _LINUX_PFN_H_
      4
      5#ifndef __ASSEMBLY__
      6#include <linux/types.h>
      7
      8/*
      9 * pfn_t: encapsulates a page-frame number that is optionally backed
     10 * by memmap (struct page).  Whether a pfn_t has a 'struct page'
     11 * backing is indicated by flags in the high bits of the value.
     12 */
     13typedef struct {
     14	u64 val;
     15} pfn_t;
     16#endif
     17
     18#define PFN_ALIGN(x)	(((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
     19#define PFN_UP(x)	(((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
     20#define PFN_DOWN(x)	((x) >> PAGE_SHIFT)
     21#define PFN_PHYS(x)	((phys_addr_t)(x) << PAGE_SHIFT)
     22#define PHYS_PFN(x)	((unsigned long)((x) >> PAGE_SHIFT))
     23
     24#endif