linux-kernel - Re: [PATCH] 2.6.18-rt7: PowerPC: fix breakage in threaded fasteoi type IRQ handlers

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Message-ID: <20061120165621.GA1504@elte.hu>
Date:	Mon, 20 Nov 2006 17:56:21 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	dwalker@...sta.com
Subject: Re: [PATCH] 2.6.18-rt7: PowerPC: fix breakage in threaded fasteoi type IRQ handlers


* Sergei Shtylyov <sshtylyov@...mvista.com> wrote:

> >on PPC64, 'get the vector' initiates an ACK as well - is that done 
> >before handle_irq() is done?
> 
>    Exactly. How else do_IRQ() would know the vector?

the reason i'm asking is that in this case masking is a bit late at this 
point and there's a chance for a repeat interrupt.

	Ingo
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