linux-kernel - Re: [PATCH HACK] powerpc: quick hack to get a functional eHEA with hardirq preemption, eHCA is close

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Message-ID: <OFD7842B7A.ADC47EED-ONC12574C8.003A2CB3-C12574C8.003AC948@de.ibm.com>
Date:	Thu, 18 Sep 2008 12:42:05 +0200
From:	Christoph Raisch <RAISCH@...ibm.com>
To:	Sebastien Dugue <sebastien.dugue@...l.net>
Cc:	Benjamin Herrenschmidt <bherren@....ibm.com>,
	gilles.carry@....bull.net, Jan-Bernd Themann <THEMANN@...ibm.com>,
	jean-pierre.dion@...l.net,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Linux-rt <linux-rt-users@...r.kernel.org>,
	linux-ppc <linuxppc-dev@...abs.org>, netdev@...r.kernel.org,
	Thomas Q Klein <TKLEIN@...ibm.com>, tinytim@...ibm.com,
	Hoang-Nam Nguyen <HNGUYEN@...ibm.com>
Subject: Re: [PATCH HACK] powerpc: quick hack to get a functional eHEA with hardirq
 preemption, eHCA is close


Sebastien Dugue <sebastien.dugue@...l.net> wrote on 18.09.2008 11:27:13:

>
>   It would be really interresting to know if the eHCA exhibits the same
> problem under -rt as it's the only other user of the ibmebus.
> Unfortunately I don't have the hardware to test.
>

eHCA is very close from the interrupt generation and handling perspective,
so yes, could be an issue there as well.


Gruss / Regards
Christoph Raisch


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