1 // SPDX-License-Identifier: GPL-2.0
3 #include <linux/types.h>
4 #include <linux/mmdebug.h>
7 #include <asm/sections.h>
9 phys_addr_t __virt_to_phys(unsigned long x)
12 * Boundary checking aginst the kernel linear mapping space.
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);
18 return __va_to_pa_nodebug(x);
20 EXPORT_SYMBOL(__virt_to_phys);
22 phys_addr_t __phys_addr_symbol(unsigned long x)
24 unsigned long kernel_start = kernel_map.virt_addr;
25 unsigned long kernel_end = (unsigned long)_end;
28 * Boundary checking aginst the kernel image mapping.
29 * __pa_symbol should only be used on kernel symbol addresses.
31 VIRTUAL_BUG_ON(x < kernel_start || x > kernel_end);
33 return __va_to_pa_nodebug(x);
35 EXPORT_SYMBOL(__phys_addr_symbol);