From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH 4/5] x86 idle floppy: delete
	disable_hlt()/enable_hlt()
Date: Thu, 24 Mar 2011 08:58:25 -0700
Message-ID: <m239mcv7by.fsf@firstfloor.org>
References: <1300950508-22746-1-git-send-email-lenb@kernel.org>
	<fb07f62522099f5d3f2b7aa6014329d716081b62.1300950095.git.len.brown@intel.com>
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	(Len Brown's message of "Thu, 24 Mar 2011 03:08:27 -0400")
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To: Len Brown <lenb@kernel.org>
Cc: Len Brown <len.brown@intel.com>, linux-pm@lists.linux-foundation.org, x86@kernel.org, linux-kernel@vger.kernel.org
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Len Brown <lenb@kernel.org> writes:
>
> floppy.c said:
>
> "disable hlt during certain critical i/o operations"
>
> x86/kernel/process.c said:
>
> "This halt magic was a workaround for ancient floppy DMA
>  wreckage. It should be safe to remove."

AFAIK it was used on some 386/486s. I suspect it's safe to remove now.

-Andi


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