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

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Message-ID: <4560C23D.6080304@ru.mvista.com>
Date:	Sun, 19 Nov 2006 23:44:45 +0300
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	linuxppc-dev@...abs.org, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org, dwalker@...sta.com
Subject: Re: [PATCH] 2.6.18-rt7: PowerPC: fix breakage in threaded fasteoi
 type IRQ handlers

Hello.

Sergei Shtylyov wrote:

>>On MPIC or XICS, this is implicit by reading the vector. On some more
>>dumb controllers, this has to be done explicitely.

>     This is not implicit -- CPU has to read INTACK reg. on OpenPIC. Really 

    Sorry, it's the same for x86 version of OpenPIC according to spec. I meant 
the PPC implementation here.

>>Ben.

WBR, Sergei
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