Messages in this thread | | | Date | Tue, 20 Aug 2019 15:21:10 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 1/3] kprobes/x86: use instruction_pointer and instruction_pointer_set |
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On Tue, Aug 20, 2019 at 09:02:59AM +0000, Jisheng Zhang wrote: > In v2, actually, the arm64 version's kprobe_ftrace_handler() is the same > as x86's, the only difference is comment, e.g > > /* Kprobe handler expects regs->ip = ip + 1 as breakpoint hit */ > > while in arm64 > > /* Kprobe handler expects regs->pc = ip + 1 as breakpoint hit */
What's weird; I thought ARM has fixed sized instructions and they are all 4 bytes? So how does a single byte offset make sense for ARM?
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