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35 lines
1013 B
35 lines
1013 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __ASM_ALTERNATIVE_H |
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#define __ASM_ALTERNATIVE_H |
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#include <asm/alternative-macros.h> |
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#ifndef __ASSEMBLY__ |
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#include <linux/init.h> |
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#include <linux/types.h> |
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#include <linux/stddef.h> |
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struct alt_instr { |
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s32 orig_offset; /* offset to original instruction */ |
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s32 alt_offset; /* offset to replacement instruction */ |
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u16 cpufeature; /* cpufeature bit set for replacement */ |
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u8 orig_len; /* size of original instruction(s) */ |
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u8 alt_len; /* size of new instruction(s), <= orig_len */ |
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}; |
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typedef void (*alternative_cb_t)(struct alt_instr *alt, |
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__le32 *origptr, __le32 *updptr, int nr_inst); |
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void __init apply_boot_alternatives(void); |
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void __init apply_alternatives_all(void); |
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bool alternative_is_applied(u16 cpufeature); |
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#ifdef CONFIG_MODULES |
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void apply_alternatives_module(void *start, size_t length); |
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#else |
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static inline void apply_alternatives_module(void *start, size_t length) { } |
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#endif |
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#endif /* __ASSEMBLY__ */ |
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#endif /* __ASM_ALTERNATIVE_H */
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