root/arch/riscv/kernel/vdso/flush_icache.S

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   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2017 SiFive
   4  */
   5 
   6 #include <linux/linkage.h>
   7 #include <asm/unistd.h>
   8 
   9         .text
  10 /* int __vdso_flush_icache(void *start, void *end, unsigned long flags); */
  11 ENTRY(__vdso_flush_icache)
  12         .cfi_startproc
  13 #ifdef CONFIG_SMP
  14         li a7, __NR_riscv_flush_icache
  15         ecall
  16 #else
  17         fence.i
  18         li a0, 0
  19 #endif
  20         ret
  21         .cfi_endproc
  22 ENDPROC(__vdso_flush_icache)
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