linux-kernel - Re: [PATCH REPOST] IB/ehca: In case of lost interrupts, trigger EOI to reenable interrupts

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Message-Id: <200806101701.47090.ossrosch@linux.vnet.ibm.com>
Date:	Tue, 10 Jun 2008 17:01:45 +0200
From:	Stefan Roscher <ossrosch@...ux.vnet.ibm.com>
To:	Roland Dreier <rdreier@...co.com>
Cc:	Roland Dreier <rolandd@...co.com>,
	Paul Mackerras <paulus@...ba.org>,
	"LinuxPPC-Dev" <linuxppc-dev@...abs.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"OF-EWG" <ewg@...ts.openfabrics.org>,
	general@...ts.openfabrics.org, fenkes@...ibm.com,
	raisch@...ibm.com, hnguyen@...ibm.com, TKLEIN@...ibm.com,
	THEMANN@...ibm.com
Subject: Re: [PATCH REPOST] IB/ehca: In case of lost interrupts, trigger EOI to reenable interrupts

On Tuesday 10 June 2008 16:52:57 Roland Dreier wrote:
>  > During corner case testing, we noticed that some versions of ehca 
>  > do not properly transition to interrupt done in special load situations.
>  > This can be resolved by periodically triggering EOI through H_EOI, 
>  > if eqes are pending.
> 
> So just to be clear: this is a workaround for a hardware/firmware bug?
> 
>  - R.
> 

Yes it is.
regards Stefan
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