linux-kernel - Re: [PATCH v3] x86: insn: Add insn_is

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Date:   Wed, 15 Apr 2020 17:23:31 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Christian König <christian.koenig@....com>,
        Jann Horn <jannh@...gle.com>,
        Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>, amd-gfx@...ts.freedesktop.org,
        Alex Deucher <alexander.deucher@....com>,
        David Zhou <David1.Zhou@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        the arch/x86 maintainers <x86@...nel.org>,
        kernel list <linux-kernel@...r.kernel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Andy Lutomirski <luto@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: [PATCH v3] x86: insn: Add insn_is_fpu()

On Fri, 10 Apr 2020 10:22:30 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:

> @@ -318,10 +331,14 @@ function convert_operands(count,opnd,       i,j,imm,mod)
>  		if (match(opcode, rex_expr))
>  			flags = add_flags(flags, "INAT_MAKE_PREFIX(INAT_PFX_REX)")
>  
> -		# check coprocessor escape : TODO
> -		if (match(opcode, fpu_expr))
> +		# x87 escape opcode needs MODRM
> +		if (match(ext, x87_expr))

Oops, it must be match(opcode, x87_expr). I'll fix it.

Thanks,

-- 
Masami Hiramatsu <mhiramat@...nel.org>