Cregit: Linux 6.11: sync

Contributors: 4
Author	Tokens	Token Proportion	Commits	Commit Proportion
Andrea Parri	56	84.85%	1	20.00%
Linus Torvalds (pre-git)	6	9.09%	2	40.00%
Anup Patel	3	4.55%	1	20.00%
Balbir Singh	1	1.52%	1	20.00%
Total	66		5

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_RISCV_SYNC_CORE_H
#define _ASM_RISCV_SYNC_CORE_H

/*
 * RISC-V implements return to user-space through an xRET instruction,
 * which is not core serializing.
 */
static inline void sync_core_before_usermode(void)
{
	asm volatile ("fence.i" ::: "memory");
}

#ifdef CONFIG_SMP
/*
 * Ensure the next switch_mm() on every CPU issues a core serializing
 * instruction for the given @mm.
 */
static inline void prepare_sync_core_cmd(struct mm_struct *mm)
{
	cpumask_setall(&mm->context.icache_stale_mask);
}
#else
static inline void prepare_sync_core_cmd(struct mm_struct *mm)
{
}
#endif /* CONFIG_SMP */

#endif /* _ASM_RISCV_SYNC_CORE_H */

sync_core.h