Re: [PATCH 2/4] i386 GDT cleanups: Use per-cpu GDT immediately upon boot

From: Eric W. Biederman
Date: Wed Mar 21 2007 - 12:52:46 EST


Rusty Russell <rusty@xxxxxxxxxxxxxxx> writes:

> On Wed, 2007-03-21 at 03:31 -0600, Eric W. Biederman wrote:
>> Rusty Russell <rusty@xxxxxxxxxxxxxxx> writes:
>> > -/*
>> > - * The boot_gdt_table must mirror the equivalent in setup.S and is
>> > - * used only for booting.
>> > - */
>>
>> It looks like you are killing a useful comment here for no good reason.
>
> Hi Eric,
>
> I think one has to look harder, then. There is no "equivalent in
> setup.S": there is no setup.S, and it's certainly not clear what GDT
> this "must mirror": it doesn't mirror any GDT at the moment.

see the gdt in:
arch/i386/boot/setup.S

> This leaves us with "is only used for booting". The name
> "boot_gdt_table" and the code itself are pretty clear.
>
> A comment might well deserve to live here, but not this one 8)
>
> Hope that clarifies,

Some of your confusion at least.

If anything the comment should read these values are fixed by the boot
protocol and we can't change them.

Eric
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