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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physaddr.c (786B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/bug.h>
      3#include <linux/export.h>
      4#include <linux/types.h>
      5#include <linux/mmdebug.h>
      6#include <linux/mm.h>
      7
      8#include <asm/memory.h>
      9
     10phys_addr_t __virt_to_phys(unsigned long x)
     11{
     12	WARN(!__is_lm_address(__tag_reset(x)),
     13	     "virt_to_phys used for non-linear address: %pK (%pS)\n",
     14	      (void *)x,
     15	      (void *)x);
     16
     17	return __virt_to_phys_nodebug(x);
     18}
     19EXPORT_SYMBOL(__virt_to_phys);
     20
     21phys_addr_t __phys_addr_symbol(unsigned long x)
     22{
     23	/*
     24	 * This is bounds checking against the kernel image only.
     25	 * __pa_symbol should only be used on kernel symbol addresses.
     26	 */
     27	VIRTUAL_BUG_ON(x < (unsigned long) KERNEL_START ||
     28		       x > (unsigned long) KERNEL_END);
     29	return __pa_symbol_nodebug(x);
     30}
     31EXPORT_SYMBOL(__phys_addr_symbol);