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f0bddf5058
This patch converts riscv to use the generic entry infrastructure from kernel/entry/*. The generic entry makes maintainers' work easier and codes more elegant. Here are the changes: - More clear entry.S with handle_exception and ret_from_exception - Get rid of complex custom signal implementation - Move syscall procedure from assembly to C, which is much more readable. - Connect ret_from_fork & ret_from_kernel_thread to generic entry. - Wrap with irqentry_enter/exit and syscall_enter/exit_from_user_mode - Use the standard preemption code instead of custom Suggested-by: Huacai Chen <chenhuacai@kernel.org> Reviewed-by: Björn Töpel <bjorn@rivosinc.com> Tested-by: Yipeng Zou <zouyipeng@huawei.com> Tested-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org> Cc: Ben Hutchings <ben@decadent.org.uk> Link: https://lore.kernel.org/r/20230222033021.983168-5-guoren@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
23 lines
490 B
C
23 lines
490 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2019 SiFive, Inc.
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*/
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#ifndef __ASM_HEAD_H
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#define __ASM_HEAD_H
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#include <linux/linkage.h>
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#include <linux/init.h>
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extern atomic_t hart_lottery;
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asmlinkage void __init setup_vm(uintptr_t dtb_pa);
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#ifdef CONFIG_XIP_KERNEL
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asmlinkage void __init __copy_data(void);
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#endif
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#ifdef CONFIG_RISCV_BOOT_SPINWAIT
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extern void *__cpu_spinwait_stack_pointer[];
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extern void *__cpu_spinwait_task_pointer[];
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#endif
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#endif /* __ASM_HEAD_H */
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