linux-kernel - Re: [PATCH] x86: warn on apic error

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Message-ID: <20080718174931.GE6897@asus>
Date:	Fri, 18 Jul 2008 21:49:31 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Vegard Nossum <vegard.nossum@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	"Maciej W. Rozycki" <macro@...ux-mips.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: warn on apic error

[Vegard Nossum - Fri, Jul 18, 2008 at 07:45:53PM +0200]
| On Fri, Jul 18, 2008 at 7:44 PM, Cyrill Gorcunov <gorcunov@...il.com> wrote:
| > [Vegard Nossum - Fri, Jul 18, 2008 at 07:28:21PM +0200]
| > | From e89f2a9f33d01a2df7553b63cb1df525c6e75ad4 Mon Sep 17 00:00:00 2001
| > | From: Vegard Nossum <vegard.nossum@...il.com>
| > | Date: Fri, 18 Jul 2008 19:14:06 +0200
| > | Subject: [PATCH] x86: warn on apic error
| > |
| > | There are certain APIC errors which are obviously programmer errors,
| > | e.g. writing to illegal APIC registers, or sending invalid interrupt
| > | vectors. Since the error interrupt happens spot on the erroneous code,
| > | we might as well make a bit of noise about it and display the stack-
| > | trace.
| 
| > Hi Vegard, i think you better should use  #APIC_ESR_... macroses
| > from apicdef.h instead of hardcoded bits.
| 
| OOps. I actually had this in my commit message, but it disappeared mysteriously:
| 
|     In particular, the errors we do this for are:
| 
|     - Send CS error
|     - Send accept error
|     - Send illegal vector
|     - Illegal register address
| 
|     (The error codes are listed in a comment just above the code in
|     question.)
| 
| But if these definitions exist, then I will use them. Thanks!
| 
| 
| Vegard
| 
| -- 
| "The animistic metaphor of the bug that maliciously sneaked in while
| the programmer was not looking is intellectually dishonest as it
| disguises that the error is the programmer's own creation."
| 	-- E. W. Dijkstra, EWD1036
| 

iirc, they all were there (though some error codes are specific for
particular processor classes like P4, pentium and other - don't remeber
you could check intel dev manual for this).

		- Cyrill -
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