1 // SPDX-License-Identifier: GPL-2.0
2 
3 #include <linux/types.h>
4 #include <linux/mmdebug.h>
5 #include <linux/mm.h>
6 #include <asm/page.h>
7 #include <asm/sections.h>
8 
__virt_to_phys(unsigned long x)9 phys_addr_t __virt_to_phys(unsigned long x)
10 {
11 	/*
12 	 * Boundary checking aginst the kernel linear mapping space.
13 	 */
14 	WARN(!is_linear_mapping(x) && !is_kernel_mapping(x),
15 	     "virt_to_phys used for non-linear address: %pK (%pS)\n",
16 	     (void *)x, (void *)x);
17 
18 	return __va_to_pa_nodebug(x);
19 }
20 EXPORT_SYMBOL(__virt_to_phys);
21 
__phys_addr_symbol(unsigned long x)22 phys_addr_t __phys_addr_symbol(unsigned long x)
23 {
24 	unsigned long kernel_start = kernel_map.virt_addr;
25 	unsigned long kernel_end = (unsigned long)_end;
26 
27 	/*
28 	 * Boundary checking aginst the kernel image mapping.
29 	 * __pa_symbol should only be used on kernel symbol addresses.
30 	 */
31 	VIRTUAL_BUG_ON(x < kernel_start || x > kernel_end);
32 
33 	return __va_to_pa_nodebug(x);
34 }
35 EXPORT_SYMBOL(__phys_addr_symbol);
36