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Re: [Xen-devel] pvops-2.6.32 - Interrupt routing problem

To: "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>
Subject: Re: [Xen-devel] pvops-2.6.32 - Interrupt routing problem
From: Bastian Blank <waldi@xxxxxxxxxx>
Date: Fri, 19 Mar 2010 12:06:13 +0100
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Fraser <keir.fraser@xxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
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References: <20100314152334.GA6483@xxxxxxxxxxxxxxxxxxxxxxx> <4B9D0726.3060304@xxxxxxxx> <20100314161750.GA7790@xxxxxxxxxxxxxxxxxxxxxxx> <EB8593BCECAB3D40A8248BE0B6400A38464169F7@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20100315101126.GA24650@xxxxxxxxxxxxxxxxxxxxxxx> <EB8593BCECAB3D40A8248BE0B6400A38464AE52E@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20100315211459.GA9314@xxxxxxxxxxxxxxxxxxxxxxx> <20100316013114.GD7622@xxxxxxxxxxxxxxxxxxx> <20100316081832.GA20502@xxxxxxxxxxxxxxxxxxxxxxx> <EB8593BCECAB3D40A8248BE0B6400A384651FFBC@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
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On Fri, Mar 19, 2010 at 10:55:53AM +0800, Zhang, Xiantao wrote:
> Maybe we need allow dom0 to re-programme the first 15 GSIs to solve this 
> issue.  And the root-cause is that the IRQ info(polarity&trigger mode) 
> provided in MP table in some platforms is not always trusted, and system 
> should re-programme it according to the info parsed from ACPI.  If the 
> platform provide correct info in MP table, the issue should be gone.   
> Attached a proposed patch, could you have a try to see whether it can fix 
> your issue.  

The outcome is exactly the same than
<20100316182053.GA2258@xxxxxxxxxxxxxxxxxxxxxxx>. However it still
reports errors back to the domain.

Bastian

-- 
I'm a soldier, not a diplomat.  I can only tell the truth.
                -- Kirk, "Errand of Mercy", stardate 3198.9

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