Messages in this thread | | | Date | Sat, 27 Apr 2013 22:50:36 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 2/3] perf tools: allow user to specify hardware breakpoint bp_len |
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On 04/27/2013 09:58 AM, Oleg Nesterov wrote: > > Stupid question... So X86_FEATURE_BPEXT only works for r/w? I mean, it > doesn't allow to specify the mask for an execute breakpoint? >
x86 execute breakpoints in general are only a single byte, which has to be the first byte of the instruction.
-hpa
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