| Laura Abbott | ec6d06e | 2017-01-10 13:35:50 -0800 | [diff] [blame] | 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); |