linux-kernel - Re: failed 'ljmp' in linear addressing mode

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Message-ID: <456F0432.8010203@cfl.rr.com>
Date:	Thu, 30 Nov 2006 11:17:54 -0500
From:	Phillip Susi <psusi@....rr.com>
To:	"linux-os (Dick Johnson)" <linux-os@...logic.com>
CC:	Jun Sun <jsun@...sun.net>, linux-kernel@...r.kernel.org
Subject: Re: failed 'ljmp' in linear addressing mode

linux-os (Dick Johnson) wrote:
> Get a copy of the Intel 486 Microprocessor Reference Manual or read it on-
> line. There is no way that you can make a call like that. You would need to
> call through a task-gate or otherwise set the code-segment and the instruction 
> pointer at the same instant. First, look at the startup code for a GDT entry 

Setting the code segment and instruction pointer at the same time is 
exactly what the long jump does.

OP:  What is at the linear address 0x10000000?


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