root/arch/arm64/mm/physaddr.c

DEFINITIONS

1. __virt_to_phys
2. __phys_addr_symbol

   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 
  10 phys_addr_t __virt_to_phys(unsigned long x)
  11 {
  12         WARN(!__is_lm_address(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 }
  19 EXPORT_SYMBOL(__virt_to_phys);
  20 
  21 phys_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 }
  31 EXPORT_SYMBOL(__phys_addr_symbol);