linux-kernel - Re: [PATCH 2/2 v5] irqchip/Layerscape: Add SCFG MSI controller support

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Message-ID: <1547622.IrIylJTC5Q@ws-stein>
Date:	Wed, 23 Mar 2016 12:19:30 +0100
From:	Alexander Stein <alexander.stein@...tec-electronic.com>
To:	Marc Zyngier <marc.zyngier@....com>
Cc:	linux-kernel@...r.kernel.org,
	Minghuan Lian <Minghuan.Lian@....com>,
	linux-arm-kernel@...ts.infradead.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>,
	Roy Zang <roy.zang@....com>, Mingkai Hu <mingkai.hu@....com>,
	Stuart Yoder <stuart.yoder@....com>,
	Yang-Leo Li <leoyang.li@....com>
Subject: Re: [PATCH 2/2 v5] irqchip/Layerscape: Add SCFG MSI controller support

On Wednesday 23 March 2016 11:08:04, Marc Zyngier wrote:
> > Using an intel e1000e card which uses 3 MSIs. But the IRQ numbers are a bit strange though:
> >> grep eth3 /proc/interrupts
> >>
> >>  63:         49          0       MSI 134742016 Edge      eth3-rx-0
> >>  64:          3          0       MSI 134742017 Edge      eth3-tx-0
> >>  65:          4          0       MSI 134742018 Edge      eth3
> 
> This is a virtual interrupt number (despite being displayed as a hwirq),
> computed from the PCI requester ID and the MSI index. You shouldn't
> infer anything from it.

Why show it anyway then if you can't infer anything?

Best regards,
Alexander