421f81a243
When RISCV_ALWAYS_SWITCH_THROUGH_ECALL is enabled, do_swap() enables PMP checking in is_kernel_syscall. If the PMP stack guard is triggered and do_swap() is called from the fault handler, a PMP error occurs because the stack usage violates the previous PMP setting. Remove the stack guard setting during a stack overflow handler to allow enabling PMP checking safely in fault handler. Signed-off-by: Jimmy Zheng <jimmyzhe@andestech.com>
18 lines
509 B
C
18 lines
509 B
C
/*
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* Copyright (c) 2022 BayLibre, SAS
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef PMP_H_
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#define PMP_H_
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void z_riscv_pmp_init(void);
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void z_riscv_pmp_stackguard_prepare(struct k_thread *thread);
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void z_riscv_pmp_stackguard_enable(struct k_thread *thread);
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void z_riscv_pmp_stackguard_disable(void);
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void z_riscv_pmp_usermode_init(struct k_thread *thread);
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void z_riscv_pmp_usermode_prepare(struct k_thread *thread);
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void z_riscv_pmp_usermode_enable(struct k_thread *thread);
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#endif /* PMP_H_ */
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