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| author | Stefan Agner <stefan.agner@toradex.com> | 2019-11-12 13:57:30 +0100 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2019-11-12 13:57:30 +0100 |
| commit | 401bf3f29b1aa6d9ca32bd3252fc9beabe93d80b (patch) | |
| tree | 6dd86325823a9b44b6e696acbd077e68c47d3108 /arch/arm64/kernel/ftrace.c | |
| parent | 5a9c845fe261dec87f892f3fd3c2e32604d952c0 (diff) | |
| parent | b260a0862e3a9fccdac23ec3b783911b098c1c74 (diff) | |
Merge tag 'v5.3.10' into toradex_5.3.ytoradex_5.3.y
This is the 5.3.10 stable release
Diffstat (limited to 'arch/arm64/kernel/ftrace.c')
| -rw-r--r-- | arch/arm64/kernel/ftrace.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/arm64/kernel/ftrace.c b/arch/arm64/kernel/ftrace.c index 171773257974..06e56b470315 100644 --- a/arch/arm64/kernel/ftrace.c +++ b/arch/arm64/kernel/ftrace.c @@ -121,10 +121,16 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr) /* * Ensure updated trampoline is visible to instruction - * fetch before we patch in the branch. + * fetch before we patch in the branch. Although the + * architecture doesn't require an IPI in this case, + * Neoverse-N1 erratum #1542419 does require one + * if the TLB maintenance in module_enable_ro() is + * skipped due to rodata_enabled. It doesn't seem worth + * it to make it conditional given that this is + * certainly not a fast-path. */ - __flush_icache_range((unsigned long)&dst[0], - (unsigned long)&dst[1]); + flush_icache_range((unsigned long)&dst[0], + (unsigned long)&dst[1]); } addr = (unsigned long)dst; #else /* CONFIG_ARM64_MODULE_PLTS */ |