linux-kernel - Re: [RFC] x86: Disable traditional FPU instructions too

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Date:	Mon, 27 Jan 2014 09:01:38 -0800
From:	Andi Kleen <andi@...stfloor.org>
To:	Jiri Kosina <jkosina@...e.cz>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Michael Matz <matz@...e.de>, Michal Hocko <mhocko@...e.cz>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] x86: Disable traditional FPU instructions too

Jiri Kosina <jkosina@...e.cz> writes:

> On Mon, 27 Jan 2014, H. Peter Anvin wrote:
>
>> I don't think it'd hurt... although I think the above pretty much
>> requires that the code contain actual floating-point types to ever be
>> generated.  
>
> Unfortunately using float-typed constants (such as 1EexpL) are enough for 
> this to happen.

checkpatch would seem to be the right place to check for this?

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only
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