arch/riscv/include/asm/entry-common.h at v6.8

tjh.dev / kernel

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

kernel / arch / riscv / include / asm / entry-common.h

at v6.8 42 lines 1.1 kB view raw

wrap content

 1/* SPDX-License-Identifier: GPL-2.0 */
 2
 3#ifndef _ASM_RISCV_ENTRY_COMMON_H
 4#define _ASM_RISCV_ENTRY_COMMON_H
 5
 6#include <asm/stacktrace.h>
 7#include <asm/thread_info.h>
 8#include <asm/vector.h>
 9
10static inline void arch_exit_to_user_mode_prepare(struct pt_regs *regs,
11						  unsigned long ti_work)
12{
13	if (ti_work & _TIF_RISCV_V_DEFER_RESTORE) {
14		clear_thread_flag(TIF_RISCV_V_DEFER_RESTORE);
15		/*
16		 * We are already called with irq disabled, so go without
17		 * keeping track of riscv_v_flags.
18		 */
19		riscv_v_vstate_restore(&current->thread.vstate, regs);
20	}
21}
22
23#define arch_exit_to_user_mode_prepare arch_exit_to_user_mode_prepare
24
25void handle_page_fault(struct pt_regs *regs);
26void handle_break(struct pt_regs *regs);
27
28#ifdef CONFIG_RISCV_MISALIGNED
29int handle_misaligned_load(struct pt_regs *regs);
30int handle_misaligned_store(struct pt_regs *regs);
31#else
32static inline int handle_misaligned_load(struct pt_regs *regs)
33{
34	return -1;
35}
36static inline int handle_misaligned_store(struct pt_regs *regs)
37{
38	return -1;
39}
40#endif
41
42#endif /* _ASM_RISCV_ENTRY_COMMON_H */