ubuntu-linux-kernel/arch/riscv/kernel/vdso/flush_icache.S

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2024-04-01 15:06:58 +00:00
/*
* Copyright (C) 2017 SiFive
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/linkage.h>
#include <asm/unistd.h>
.text
/* int __vdso_flush_icache(void *start, void *end, unsigned long flags); */
ENTRY(__vdso_flush_icache)
.cfi_startproc
#ifdef CONFIG_SMP
li a7, __NR_riscv_flush_icache
ecall
#else
fence.i
li a0, 0
#endif
ret
.cfi_endproc
ENDPROC(__vdso_flush_icache)