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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dma.c (309B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/dma-direct.h>
      3
      4dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
      5{
      6	return paddr | 0x80000000;
      7}
      8
      9phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr)
     10{
     11	if (dma_addr > 0x8fffffff)
     12		return dma_addr;
     13	return dma_addr & 0x0fffffff;
     14}