linux-kernel - RE: [PATCH V2 6/7] x86/insn: perf tools: Add new memory protection keys instructions

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Date:	Thu, 3 Sep 2015 16:00:49 +0000
From:	平松雅巳 / HIRAMATU，MASAMI 
	<masami.hiramatsu.pt@...achi.com>
To:	"'Adrian Hunter'" <adrian.hunter@...el.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jiri Olsa <jolsa@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Qiaowei Ren <qiaowei.ren@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: RE: [PATCH V2 6/7] x86/insn: perf tools: Add new memory protection
 keys instructions

> From: Adrian Hunter [mailto:adrian.hunter@...el.com]
> 
> Add rdpkru and wrpkru to the op code map and the perf tools
> new instructions test.  In the case of the test, only the
> bytes can be tested at the moment since binutils doesn't
> support the instructions yet.  To run the test:
> 
>     $ tools/perf/perf test "x86 ins"
>     39: Test x86 instruction decoder - new instructions          : Ok
> 
> Or to see the details:
> 
>     $ tools/perf/perf test -v "x86 ins" 2>&1 | grep pkru
> 
> For information about rdpkru and wrpkru, refer the Intel SDM.

Looks very nice to me.


Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>


Thanks!

> 
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
>  arch/x86/lib/x86-opcode-map.txt                     | 2 +-
>  tools/perf/tests/insn-x86.c                         | 4 ++++
>  tools/perf/util/intel-pt-decoder/x86-opcode-map.txt | 2 +-
>  3 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86-opcode-map.txt
> index f4f0451a301e..5a9705ed9139 100644
> --- a/arch/x86/lib/x86-opcode-map.txt
> +++ b/arch/x86/lib/x86-opcode-map.txt
> @@ -885,7 +885,7 @@ GrpTable: Grp7
>  2: LGDT Ms | XGETBV (000),(11B) | XSETBV (001),(11B) | VMFUNC (100),(11B) | XEND (101)(11B) | XTEST (110)(11B)
>  3: LIDT Ms
>  4: SMSW Mw/Rv
> -5:
> +5: rdpkru (110),(11B) | wrpkru (111),(11B)
>  6: LMSW Ew
>  7: INVLPG Mb | SWAPGS (o64),(000),(11B) | RDTSCP (001),(11B)
>  EndTable
> diff --git a/tools/perf/tests/insn-x86.c b/tools/perf/tests/insn-x86.c
> index 0e126a099874..5c49eec81349 100644
> --- a/tools/perf/tests/insn-x86.c
> +++ b/tools/perf/tests/insn-x86.c
> @@ -17,11 +17,15 @@ struct test_data {
> 
>  struct test_data test_data_32[] = {
>  #include "insn-x86-dat-32.c"
> +	{{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee             \trdpkru"},
> +	{{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef             \twrpkru"},
>  	{{0}, 0, 0, NULL, NULL, NULL},
>  };
> 
>  struct test_data test_data_64[] = {
>  #include "insn-x86-dat-64.c"
> +	{{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee             \trdpkru"},
> +	{{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef             \twrpkru"},
>  	{{0}, 0, 0, NULL, NULL, NULL},
>  };
> 
> diff --git a/tools/perf/util/intel-pt-decoder/x86-opcode-map.txt b/tools/perf/util/intel-pt-decoder/x86-opcode-map.txt
> index f4f0451a301e..5a9705ed9139 100644
> --- a/tools/perf/util/intel-pt-decoder/x86-opcode-map.txt
> +++ b/tools/perf/util/intel-pt-decoder/x86-opcode-map.txt
> @@ -885,7 +885,7 @@ GrpTable: Grp7
>  2: LGDT Ms | XGETBV (000),(11B) | XSETBV (001),(11B) | VMFUNC (100),(11B) | XEND (101)(11B) | XTEST (110)(11B)
>  3: LIDT Ms
>  4: SMSW Mw/Rv
> -5:
> +5: rdpkru (110),(11B) | wrpkru (111),(11B)
>  6: LMSW Ew
>  7: INVLPG Mb | SWAPGS (o64),(000),(11B) | RDTSCP (001),(11B)
>  EndTable
> --
> 1.9.1