linux-kernel - Re: [PATCH] Introduce config option for pci reroute quirks (was: [PATCH 0/3] Boot IRQ quirks for Broadcom and AMD/ATI)

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Date:	Fri, 18 Jul 2008 19:31:29 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Stefan Assmann <sassmann@...e.de>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Jon Masters <jonathan@...masters.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Ihno Krumreich <ihno@...e.de>,
	Sven Dietrich <sdietrich@...e.de>,
	Daniel Gollub <dgollub@...e.de>,
	Felix Foerster <ffoerster@...e.de>, Olaf Dabrunz <od@...e.de>
Subject: Re: [PATCH] Introduce config option for pci reroute quirks (was:
	[PATCH 0/3] Boot IRQ quirks for Broadcom and AMD/ATI)


* Stefan Assmann <sassmann@...e.de> wrote:

> This is against linux-2.6-tip, branch pci-ioapic-boot-irq-quirks.
> 
> From: Stefan Assmann <sassmann@...e.de>
> Subject: Introduce config option for pci reroute quirks
> 
> The config option X86_REROUTE_FOR_BROKEN_BOOT_IRQS is introduced to 
> enable (or disable) the redirection of the interrupt handler to the 
> boot interrupt line by default. Depending on the existence of 
> interrupt masking / threaded interrupt handling in the kernel 
> (vanilla, rt, ...) and the maturity of the rerouting patch, users can 
> enable or disable the redirection by default.
> 
> This means that the reroute quirk can be applied to any kernel without 
> changing it.
> 
> Interrupt sharing could be increased if this option is enabled. 
> However this option is vital for threaded interrupt handling, as done 
> by the RT kernel. It should simplify the consolidation with the RT 
> kernel.
> 
> The option can be overridden by either pci=ioapicreroute or 
> pci=noioapicreroute.

applied, thanks Stefan.

	Ingo
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