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

ioremap.c (485B)

      1// SPDX-License-Identifier: GPL-2.0
      2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
      3
      4#include <linux/export.h>
      5#include <linux/mm.h>
      6#include <linux/io.h>
      7
      8pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
      9			      unsigned long size, pgprot_t vma_prot)
     10{
     11	if (!pfn_valid(pfn)) {
     12		return pgprot_noncached(vma_prot);
     13	} else if (file->f_flags & O_SYNC) {
     14		return pgprot_writecombine(vma_prot);
     15	}
     16
     17	return vma_prot;
     18}
     19EXPORT_SYMBOL(phys_mem_access_prot);