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Date: Fri, 19 May 2017 23:28:26 +0900
From: Masami Hiramatsu <mhiramat@...nel.org>
To: Adrian Hunter <adrian.hunter@...el.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/insn: perf tools: Add new ptwrite instruction
On Fri, 19 May 2017 10:50:30 +0300
Adrian Hunter <adrian.hunter@...el.com> wrote:
> Add ptwrite to the op code map and the perf tools new instructions test.
> 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 ptwrite
>
> For information about ptwrite, refer the Intel SDM.
>
OK, I've checked that this exists at least "March 2017" revision.
(But Table A-6 is not updated... sigh)
Looks good to me.
Acked-by: Masami Hiramatsu <mhiramat@...nel.org>
Thank you,
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
> arch/x86/lib/x86-opcode-map.txt | 2 +-
> tools/objtool/arch/x86/insn/x86-opcode-map.txt | 2 +-
> tools/perf/arch/x86/tests/insn-x86-dat-32.c | 12 +++++++++
> tools/perf/arch/x86/tests/insn-x86-dat-64.c | 30 ++++++++++++++++++++++
> tools/perf/arch/x86/tests/insn-x86-dat-src.c | 30 ++++++++++++++++++++++
> .../perf/util/intel-pt-decoder/x86-opcode-map.txt | 2 +-
> 6 files changed, 75 insertions(+), 3 deletions(-)
>
> diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86-opcode-map.txt
> index 767be7c76034..12e377184ee4 100644
> --- a/arch/x86/lib/x86-opcode-map.txt
> +++ b/arch/x86/lib/x86-opcode-map.txt
> @@ -1009,7 +1009,7 @@ GrpTable: Grp15
> 1: fxstor | RDGSBASE Ry (F3),(11B)
> 2: vldmxcsr Md (v1) | WRFSBASE Ry (F3),(11B)
> 3: vstmxcsr Md (v1) | WRGSBASE Ry (F3),(11B)
> -4: XSAVE
> +4: XSAVE | ptwrite Ey (F3),(11B)
> 5: XRSTOR | lfence (11B)
> 6: XSAVEOPT | clwb (66) | mfence (11B)
> 7: clflush | clflushopt (66) | sfence (11B)
> diff --git a/tools/objtool/arch/x86/insn/x86-opcode-map.txt b/tools/objtool/arch/x86/insn/x86-opcode-map.txt
> index 767be7c76034..12e377184ee4 100644
> --- a/tools/objtool/arch/x86/insn/x86-opcode-map.txt
> +++ b/tools/objtool/arch/x86/insn/x86-opcode-map.txt
> @@ -1009,7 +1009,7 @@ GrpTable: Grp15
> 1: fxstor | RDGSBASE Ry (F3),(11B)
> 2: vldmxcsr Md (v1) | WRFSBASE Ry (F3),(11B)
> 3: vstmxcsr Md (v1) | WRGSBASE Ry (F3),(11B)
> -4: XSAVE
> +4: XSAVE | ptwrite Ey (F3),(11B)
> 5: XRSTOR | lfence (11B)
> 6: XSAVEOPT | clwb (66) | mfence (11B)
> 7: clflush | clflushopt (66) | sfence (11B)
> diff --git a/tools/perf/arch/x86/tests/insn-x86-dat-32.c b/tools/perf/arch/x86/tests/insn-x86-dat-32.c
> index 0f196eec9f48..3cbf6fad169f 100644
> --- a/tools/perf/arch/x86/tests/insn-x86-dat-32.c
> +++ b/tools/perf/arch/x86/tests/insn-x86-dat-32.c
> @@ -1664,3 +1664,15 @@
> "0f c7 1d 78 56 34 12 \txrstors 0x12345678",},
> {{0x0f, 0xc7, 0x9c, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 8, 0, "", "",
> "0f c7 9c c8 78 56 34 12 \txrstors 0x12345678(%eax,%ecx,8)",},
> +{{0xf3, 0x0f, 0xae, 0x20, }, 4, 0, "", "",
> +"f3 0f ae 20 \tptwritel (%eax)",},
> +{{0xf3, 0x0f, 0xae, 0x25, 0x78, 0x56, 0x34, 0x12, }, 8, 0, "", "",
> +"f3 0f ae 25 78 56 34 12 \tptwritel 0x12345678",},
> +{{0xf3, 0x0f, 0xae, 0xa4, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 9, 0, "", "",
> +"f3 0f ae a4 c8 78 56 34 12 \tptwritel 0x12345678(%eax,%ecx,8)",},
> +{{0xf3, 0x0f, 0xae, 0x20, }, 4, 0, "", "",
> +"f3 0f ae 20 \tptwritel (%eax)",},
> +{{0xf3, 0x0f, 0xae, 0x25, 0x78, 0x56, 0x34, 0x12, }, 8, 0, "", "",
> +"f3 0f ae 25 78 56 34 12 \tptwritel 0x12345678",},
> +{{0xf3, 0x0f, 0xae, 0xa4, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 9, 0, "", "",
> +"f3 0f ae a4 c8 78 56 34 12 \tptwritel 0x12345678(%eax,%ecx,8)",},
> diff --git a/tools/perf/arch/x86/tests/insn-x86-dat-64.c b/tools/perf/arch/x86/tests/insn-x86-dat-64.c
> index af25bc8240d0..aa512fa944dd 100644
> --- a/tools/perf/arch/x86/tests/insn-x86-dat-64.c
> +++ b/tools/perf/arch/x86/tests/insn-x86-dat-64.c
> @@ -1696,3 +1696,33 @@
> "0f c7 9c c8 78 56 34 12 \txrstors 0x12345678(%rax,%rcx,8)",},
> {{0x41, 0x0f, 0xc7, 0x9c, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 9, 0, "", "",
> "41 0f c7 9c c8 78 56 34 12 \txrstors 0x12345678(%r8,%rcx,8)",},
> +{{0xf3, 0x0f, 0xae, 0x20, }, 4, 0, "", "",
> +"f3 0f ae 20 \tptwritel (%rax)",},
> +{{0xf3, 0x41, 0x0f, 0xae, 0x20, }, 5, 0, "", "",
> +"f3 41 0f ae 20 \tptwritel (%r8)",},
> +{{0xf3, 0x0f, 0xae, 0x24, 0x25, 0x78, 0x56, 0x34, 0x12, }, 9, 0, "", "",
> +"f3 0f ae 24 25 78 56 34 12 \tptwritel 0x12345678",},
> +{{0xf3, 0x0f, 0xae, 0xa4, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 9, 0, "", "",
> +"f3 0f ae a4 c8 78 56 34 12 \tptwritel 0x12345678(%rax,%rcx,8)",},
> +{{0xf3, 0x41, 0x0f, 0xae, 0xa4, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 10, 0, "", "",
> +"f3 41 0f ae a4 c8 78 56 34 12 \tptwritel 0x12345678(%r8,%rcx,8)",},
> +{{0xf3, 0x0f, 0xae, 0x20, }, 4, 0, "", "",
> +"f3 0f ae 20 \tptwritel (%rax)",},
> +{{0xf3, 0x41, 0x0f, 0xae, 0x20, }, 5, 0, "", "",
> +"f3 41 0f ae 20 \tptwritel (%r8)",},
> +{{0xf3, 0x0f, 0xae, 0x24, 0x25, 0x78, 0x56, 0x34, 0x12, }, 9, 0, "", "",
> +"f3 0f ae 24 25 78 56 34 12 \tptwritel 0x12345678",},
> +{{0xf3, 0x0f, 0xae, 0xa4, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 9, 0, "", "",
> +"f3 0f ae a4 c8 78 56 34 12 \tptwritel 0x12345678(%rax,%rcx,8)",},
> +{{0xf3, 0x41, 0x0f, 0xae, 0xa4, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 10, 0, "", "",
> +"f3 41 0f ae a4 c8 78 56 34 12 \tptwritel 0x12345678(%r8,%rcx,8)",},
> +{{0xf3, 0x48, 0x0f, 0xae, 0x20, }, 5, 0, "", "",
> +"f3 48 0f ae 20 \tptwriteq (%rax)",},
> +{{0xf3, 0x49, 0x0f, 0xae, 0x20, }, 5, 0, "", "",
> +"f3 49 0f ae 20 \tptwriteq (%r8)",},
> +{{0xf3, 0x48, 0x0f, 0xae, 0x24, 0x25, 0x78, 0x56, 0x34, 0x12, }, 10, 0, "", "",
> +"f3 48 0f ae 24 25 78 56 34 12 \tptwriteq 0x12345678",},
> +{{0xf3, 0x48, 0x0f, 0xae, 0xa4, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 10, 0, "", "",
> +"f3 48 0f ae a4 c8 78 56 34 12 \tptwriteq 0x12345678(%rax,%rcx,8)",},
> +{{0xf3, 0x49, 0x0f, 0xae, 0xa4, 0xc8, 0x78, 0x56, 0x34, 0x12, }, 10, 0, "", "",
> +"f3 49 0f ae a4 c8 78 56 34 12 \tptwriteq 0x12345678(%r8,%rcx,8)",},
> diff --git a/tools/perf/arch/x86/tests/insn-x86-dat-src.c b/tools/perf/arch/x86/tests/insn-x86-dat-src.c
> index 979487dae8d4..6cdb65d25b79 100644
> --- a/tools/perf/arch/x86/tests/insn-x86-dat-src.c
> +++ b/tools/perf/arch/x86/tests/insn-x86-dat-src.c
> @@ -1343,6 +1343,26 @@ int main(void)
> asm volatile("xrstors 0x12345678(%rax,%rcx,8)");
> asm volatile("xrstors 0x12345678(%r8,%rcx,8)");
>
> + /* ptwrite */
> +
> + asm volatile("ptwrite (%rax)");
> + asm volatile("ptwrite (%r8)");
> + asm volatile("ptwrite (0x12345678)");
> + asm volatile("ptwrite 0x12345678(%rax,%rcx,8)");
> + asm volatile("ptwrite 0x12345678(%r8,%rcx,8)");
> +
> + asm volatile("ptwritel (%rax)");
> + asm volatile("ptwritel (%r8)");
> + asm volatile("ptwritel (0x12345678)");
> + asm volatile("ptwritel 0x12345678(%rax,%rcx,8)");
> + asm volatile("ptwritel 0x12345678(%r8,%rcx,8)");
> +
> + asm volatile("ptwriteq (%rax)");
> + asm volatile("ptwriteq (%r8)");
> + asm volatile("ptwriteq (0x12345678)");
> + asm volatile("ptwriteq 0x12345678(%rax,%rcx,8)");
> + asm volatile("ptwriteq 0x12345678(%r8,%rcx,8)");
> +
> #else /* #ifdef __x86_64__ */
>
> /* bound r32, mem (same op code as EVEX prefix) */
> @@ -2653,6 +2673,16 @@ int main(void)
> asm volatile("xrstors (0x12345678)");
> asm volatile("xrstors 0x12345678(%eax,%ecx,8)");
>
> + /* ptwrite */
> +
> + asm volatile("ptwrite (%eax)");
> + asm volatile("ptwrite (0x12345678)");
> + asm volatile("ptwrite 0x12345678(%eax,%ecx,8)");
> +
> + asm volatile("ptwritel (%eax)");
> + asm volatile("ptwritel (0x12345678)");
> + asm volatile("ptwritel 0x12345678(%eax,%ecx,8)");
> +
> #endif /* #ifndef __x86_64__ */
>
> /* Following line is a marker for the awk script - do not change */
> 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 767be7c76034..12e377184ee4 100644
> --- a/tools/perf/util/intel-pt-decoder/x86-opcode-map.txt
> +++ b/tools/perf/util/intel-pt-decoder/x86-opcode-map.txt
> @@ -1009,7 +1009,7 @@ GrpTable: Grp15
> 1: fxstor | RDGSBASE Ry (F3),(11B)
> 2: vldmxcsr Md (v1) | WRFSBASE Ry (F3),(11B)
> 3: vstmxcsr Md (v1) | WRGSBASE Ry (F3),(11B)
> -4: XSAVE
> +4: XSAVE | ptwrite Ey (F3),(11B)
> 5: XRSTOR | lfence (11B)
> 6: XSAVEOPT | clwb (66) | mfence (11B)
> 7: clflush | clflushopt (66) | sfence (11B)
> --
> 1.9.1
>
--
Masami Hiramatsu <mhiramat@...nel.org>
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