linux-kernel - Re: [PATCH]x86_64: build and use GDT on copied compressed kernel

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Message-ID: <86802c440705122329y27c6ef92v8cff43d52b99ae69@mail.gmail.com>
Date:	Sat, 12 May 2007 23:29:23 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	"Andi Kleen" <ak@...e.de>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Vivek Goyal" <vgoyal@...ibm.com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH]x86_64: build and use GDT on copied compressed kernel

On 5/12/07, Eric W. Biederman <ebiederm@...ssion.com> wrote:
> Overwriting the GDT should be fine because we don't reload the segments,
> after we overwrite it.  GDT entries are only read when we load segments.
> Interrupts are disabled so that should not cause a problem.
>
> Why do you think the current behaviour is a problem?

just think if GDT should not be overwriten when we are still under
that GDT setting.
didn't have chance to test that in HDT or other debug device, when
setting breaking point after that GDT is overwriten.

YH
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