arch/arm64/mm/physaddr.c

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