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Re: [PATCH] Import updates from i386's i8259.c

To: "Maciej W. Rozycki" <>
Subject: Re: [PATCH] Import updates from i386's i8259.c
From: Sergei Shtylyov <>
Date: Wed, 06 Dec 2006 18:12:44 +0300
Cc: Ingo Molnar <>,, Ralf Baechle <>,
In-reply-to: <>
Organization: MontaVista Software Inc.
Original-recipient: rfc822;
References: <> <> <> <> <> <> <> <>
User-agent: Mozilla/5.0 (X11; U; Linux i686; rv:1.7.2) Gecko/20040803

Maciej W. Rozycki wrote:

And with the "IO-APIC-edge" and "IO-APIC-level" alternatives back when the
concept of IRQ controllers was introduced, "XT-PIC" rather than "8259A"
sounded quite right.

  I don't follow you here.

These were the three first names of interrupt controllers introduced back in 2.1 and the names chosen looked consistent.

   I'd say they *only* looked consistent then. :-)
In fact, i8259.c is driving two coupled together 8259 chips, so using the word "XT" in this context was absolutely wrong.
   As for the I/O APIC, I think i82903AA was "the reference design" for it...


WBR, Sergei

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