arch/riscv/mm/cacheflush.c

   1 /*
   2  * Copyright (C) 2017 SiFive
   3  *
   4  *   This program is free software; you can redistribute it and/or
   5  *   modify it under the terms of the GNU General Public License
   6  *   as published by the Free Software Foundation, version 2.
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details.
  12  */
  13
  14 #include <asm/pgtable.h>
  15 #include <asm/cacheflush.h>
  16
  17 void flush_icache_pte(pte_t pte)
  18 {
  19         struct page *page = pte_page(pte);
  20
  21         if (!test_and_set_bit(PG_dcache_clean, &page->flags))
  22                 flush_icache_all();
  23 }