linux-kernel - Re: [PATCH 3/4] x86,module: Detect VMX vs SLD conflicts

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Message-ID: <55dfd3fd-26c2-77d6-4961-3cef8d746f7f@citrix.com>
Date:   Tue, 7 Apr 2020 18:16:58 +0100
From:   Andrew Cooper <andrew.cooper3@...rix.com>
To:     Masami Hiramatsu <mhiramat@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
CC:     <tglx@...utronix.de>, <linux-kernel@...r.kernel.org>,
        <hch@...radead.org>, <sean.j.christopherson@...el.com>,
        <mingo@...hat.com>, <bp@...en8.de>, <hpa@...or.com>,
        <x86@...nel.org>, <kenny@...ix.com>, <jeyu@...nel.org>,
        <rasmus.villemoes@...vas.dk>, <pbonzini@...hat.com>,
        <fenghua.yu@...el.com>, <xiaoyao.li@...el.com>,
        <nadav.amit@...il.com>, <thellstrom@...are.com>,
        <tony.luck@...el.com>, <rostedt@...dmis.org>,
        <gregkh@...uxfoundation.org>, <jannh@...gle.com>,
        <keescook@...omium.org>, <David.Laight@...lab.com>,
        <dcovelli@...are.com>
Subject: Re: [PATCH 3/4] x86,module: Detect VMX vs SLD conflicts

On 07/04/2020 17:51, Masami Hiramatsu wrote:
> diff --git a/tools/arch/x86/tools/gen-insn-attr-x86.awk b/tools/arch/x86/tools/gen-insn-attr-x86.awk
> index d74d9e605723..ade80796453c 100644
> --- a/tools/arch/x86/tools/gen-insn-attr-x86.awk
> +++ b/tools/arch/x86/tools/gen-insn-attr-x86.awk
> @@ -70,6 +70,8 @@ BEGIN {
>  	mmx_expr = "^(emms|fxsave|fxrstor|ldmxcsr|stmxcsr)" # MMX/SSE nmemonics lacking operands
>  	fpu_expr = "^x87"
>  
> +	vmx_expr = "^VM.*" # All mnemonic start with "VM" are VMX instructions

Not really.

VMMCALL, VMLOAD, VMSAVE and VMRUN are SVM instructions.

VMASKMOV is a AVX instruction.

~Andrew