From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/arm64/include/asm/alternative.h | 38 ++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 arch/arm64/include/asm/alternative.h (limited to 'arch/arm64/include/asm/alternative.h') diff --git a/arch/arm64/include/asm/alternative.h b/arch/arm64/include/asm/alternative.h new file mode 100644 index 0000000000..00d97b8a75 --- /dev/null +++ b/arch/arm64/include/asm/alternative.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_ALTERNATIVE_H +#define __ASM_ALTERNATIVE_H + +#include + +#ifndef __ASSEMBLY__ + +#include +#include +#include + +struct alt_instr { + s32 orig_offset; /* offset to original instruction */ + s32 alt_offset; /* offset to replacement instruction */ + u16 cpucap; /* cpucap bit set for replacement */ + u8 orig_len; /* size of original instruction(s) */ + u8 alt_len; /* size of new instruction(s), <= orig_len */ +}; + +typedef void (*alternative_cb_t)(struct alt_instr *alt, + __le32 *origptr, __le32 *updptr, int nr_inst); + +void __init apply_boot_alternatives(void); +void __init apply_alternatives_all(void); +bool alternative_is_applied(u16 cpucap); + +#ifdef CONFIG_MODULES +void apply_alternatives_module(void *start, size_t length); +#else +static inline void apply_alternatives_module(void *start, size_t length) { } +#endif + +void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr, + __le32 *updptr, int nr_inst); + +#endif /* __ASSEMBLY__ */ +#endif /* __ASM_ALTERNATIVE_H */ -- cgit v1.2.3