include/qemu/cacheflush.h

   1 /*
   2  * Flush the host cpu caches.
   3  *
   4  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #ifndef QEMU_CACHEFLUSH_H
   9 #define QEMU_CACHEFLUSH_H
  10
  11 /**
  12  * flush_idcache_range:
  13  * @rx: instruction address
  14  * @rw: data address
  15  * @len: length to flush
  16  *
  17  * Flush @len bytes of the data cache at @rw and the icache at @rx
  18  * to bring them in sync.  The two addresses may be different virtual
  19  * mappings of the same physical page(s).
  20  */
  21
  22 #if defined(__i386__) || defined(__x86_64__) || defined(__s390__)
  23
  24 static inline void flush_idcache_range(uintptr_t rx, uintptr_t rw, size_t len)
  25 {
  26     /* icache is coherent and does not require flushing. */
  27 }
  28
  29 #else
  30
  31 void flush_idcache_range(uintptr_t rx, uintptr_t rw, size_t len);
  32
  33 #endif
  34
  35 #endif /* QEMU_CACHEFLUSH_H */