| /drivers/video/drm/drm_stub.c |
|---|
| 107,3 → 107,23 |
| return order; |
| } |
| extern int x86_clflush_size; |
| static inline void clflush(volatile void *__p) |
| { |
| asm volatile("clflush %0" : "+m" (*(volatile char*)__p)); |
| } |
| void |
| drm_clflush_virt_range(char *addr, unsigned long length) |
| { |
| char *end = addr + length; |
| mb(); |
| for (; addr < end; addr += x86_clflush_size) |
| clflush(addr); |
| clflush(end - 1); |
| mb(); |
| return; |
| } |