diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2019-11-15 10:30:50 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-11-15 10:30:50 +0100 |
| commit | ac94be498f84f7327533b62faca4c3da64434904 (patch) | |
| tree | 63893f37afb67cd400bf60ec16a35440d16f2a90 /arch/parisc/include/asm/alternative.h | |
| parent | dce7cd62754b5d4a6e401b8b0769ec94cf971041 (diff) | |
| parent | 8c5bd25bf42effd194d4b0b43895c42b374e620b (diff) | |
Merge branch 'linus' into x86/hyperv
Pick up upstream fixes to avoid conflicts.
Diffstat (limited to 'arch/parisc/include/asm/alternative.h')
| -rw-r--r-- | arch/parisc/include/asm/alternative.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/parisc/include/asm/alternative.h b/arch/parisc/include/asm/alternative.h index 793d8baa3a10..0ec54f43d6d2 100644 --- a/arch/parisc/include/asm/alternative.h +++ b/arch/parisc/include/asm/alternative.h @@ -8,6 +8,7 @@ #define ALT_COND_NO_ICACHE 0x04 /* if system has no i-cache */ #define ALT_COND_NO_SPLIT_TLB 0x08 /* if split_tlb == 0 */ #define ALT_COND_NO_IOC_FDC 0x10 /* if I/O cache does not need flushes */ +#define ALT_COND_RUN_ON_QEMU 0x20 /* if running on QEMU */ #define INSN_PxTLB 0x02 /* modify pdtlb, pitlb */ #define INSN_NOP 0x08000240 /* nop */ @@ -21,7 +22,7 @@ struct alt_instr { s32 orig_offset; /* offset to original instructions */ - u32 len; /* end of original instructions */ + s32 len; /* end of original instructions */ u32 cond; /* see ALT_COND_XXX */ u32 replacement; /* replacement instruction or code */ }; @@ -40,12 +41,20 @@ void apply_alternatives(struct alt_instr *start, struct alt_instr *end, #else +/* to replace one single instructions by a new instruction */ #define ALTERNATIVE(from, to, cond, replacement)\ .section .altinstructions, "aw" ! \ .word (from - .), (to - from)/4 ! \ .word cond, replacement ! \ .previous +/* to replace multiple instructions by new code */ +#define ALTERNATIVE_CODE(from, num_instructions, cond, new_instr_ptr)\ + .section .altinstructions, "aw" ! \ + .word (from - .), -num_instructions ! \ + .word cond, (new_instr_ptr - .) ! \ + .previous + #endif /* __ASSEMBLY__ */ #endif /* __ASM_PARISC_ALTERNATIVE_H */ |