Messages in this thread | | | Date | Tue, 01 Sep 2015 11:17:34 +0300 | From | Adrian Hunter <> | Subject | Re: [PATCH 1/4] perf tools: Add a test for decoding of new x86 instructions |
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On 01/09/15 03:18, 平松雅巳 / HIRAMATU,MASAMI wrote: >> From: Adrian Hunter [mailto:adrian.hunter@intel.com] >> >> Add a new test titled: >> >> Test x86 instruction decoder - new instructions >> >> The purpose of this test is to check the instruction decoder >> after new instructions have been added. Initially, MPX >> instructions are tested which are already supported, but the >> definitions in x86-opcode-map.txt will be tweaked in a >> subsequent patch, after which this test can be run to verify >> those changes. > > Hmm, btw, why should this test in perf? It seems that we need > this test in kselftest or build-time selftest. > I prefer to put this in arch/x86/tools/ or lib/. What would you > think ?
There are 2 reasons perf tools needs a test: 1. perf tools is source code independent from the kernel i.e. it has its own copy of the instruction decoder. 2. perf tools test also tests the Intel PT decoder's categorization of instructions.
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