The x86 instruction decoder is used for both kernel instructions and
user space instructions (e.g. uprobes, perf tools Intel PT), so it is
good to update it with new instructions.

Add AMX instructions to the x86 instruction decoder test.

A subsequent patch adds the instructions to the instruction decoder.

Reference:
Intel Architecture Instruction Set Extensions and Future Features
Programming Reference
May 2021
Document Number: 319433-044

Example:

  $ INSN='ldtilecfg\|sttilecfg\|tdpbf16ps\|tdpbssd\|'
  $ INSN+='tdpbsud\|tdpbusd\|'tdpbuud\|tileloadd\|'
  $ INSN+='tileloaddt1\|tilerelease\|tilestored\|tilezero'
  $ perf test -v "x86 instruction decoder" |& grep -i $INSN
  Failed to decode: c4 e2 78 49 04 c8    	ldtilecfg (%rax,%rcx,8)
  Failed to decode: c4 c2 78 49 04 c8    	ldtilecfg (%r8,%rcx,8)
  Failed to decode: c4 e2 79 49 04 c8    	sttilecfg (%rax,%rcx,8)
  Failed to decode: c4 c2 79 49 04 c8    	sttilecfg (%r8,%rcx,8)
  Failed to decode: c4 e2 7a 5c d1       	tdpbf16ps %tmm0,%tmm1,%tmm2
  Failed to decode: c4 e2 7b 5e d1       	tdpbssd %tmm0,%tmm1,%tmm2
  Failed to decode: c4 e2 7a 5e d1       	tdpbsud %tmm0,%tmm1,%tmm2
  Failed to decode: c4 e2 79 5e d1       	tdpbusd %tmm0,%tmm1,%tmm2
  Failed to decode: c4 e2 78 5e d1       	tdpbuud %tmm0,%tmm1,%tmm2
  Failed to decode: c4 e2 7b 4b 0c c8    	tileloadd (%rax,%rcx,8),%tmm1
  Failed to decode: c4 c2 7b 4b 14 c8    	tileloadd (%r8,%rcx,8),%tmm2
  Failed to decode: c4 e2 79 4b 0c c8    	tileloaddt1 (%rax,%rcx,8),%tmm1
  Failed to decode: c4 c2 79 4b 14 c8    	tileloaddt1 (%r8,%rcx,8),%tmm2
  Failed to decode: c4 e2 78 49 c0       	tilerelease
  Failed to decode: c4 e2 7a 4b 0c c8    	tilestored %tmm1,(%rax,%rcx,8)
  Failed to decode: c4 c2 7a 4b 14 c8    	tilestored %tmm2,(%r8,%rcx,8)
  Failed to decode: c4 e2 7b 49 c0       	tilezero %tmm0
  Failed to decode: c4 e2 7b 49 f8       	tilezero %tmm7
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20211202095029.2165714-2-adrian.hunter@intel.com