linux-kernel - Re: [PATCH] Remove default_ldt, and simplify ldt-setting.

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Message-ID: <44EE3515.6000304@vmware.com>
Date:	Thu, 24 Aug 2006 16:24:05 -0700
From:	Zachary Amsden <zach@...are.com>
To:	Andi Kleen <ak@...e.de>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Remove default_ldt, and simplify ldt-setting.

Andi Kleen wrote:
>
>> If there are no LDT entries, the LDT register is loaded
>> with a NULL descriptor.
>>     
>
> x86-64 currently doesn't do this -- do you see an particular advantage 
> in it?
>   

It's friendlier to virtual machines ;)  And you can't get a zero sized 
LDT otherwise.
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