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

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Message-ID: <19f34abd0807181045k239c81e8i1520291922909e93@mail.gmail.com>
Date:	Fri, 18 Jul 2008 19:45:53 +0200
From:	"Vegard Nossum" <vegard.nossum@...il.com>
To:	"Cyrill Gorcunov" <gorcunov@...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

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
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