Message-ID: <4D5A8021.2060001@zytor.com>
Date: Tue, 15 Feb 2011 05:31:13 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Will Newton <will.newton@gmail.com>
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Subject: Re: [PATCH 0/2] jump label: 2.6.38 updates
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On 02/15/2011 03:01 AM, Will Newton wrote:
> 
> The CPU in question has two sets of instructions:
> 
>   load/store - these go via the cache (write through)
>   ll/sc - these operate literally as if there is no cache (they do not
> hit on read or write)
> 
> This may or may not be a sensible way to architect a CPU, but I think
> it is possible to make it work. Making it work efficiently is more of
> a challenge.
> 

a) What "CPU in question" is this?
b) Why should we let this particular insane CPU slow ALL OTHER CPUs down?

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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