linux-kernel - Re: [patch 08/16] genirq: Introduce callback irq_chip.irq_write_msi

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Message-ID: <alpine.DEB.2.11.1412101102420.13233@nanos>
Date:	Wed, 10 Dec 2014 11:25:12 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	"Yun Wu (Abel)" <wuyun.wu@...wei.com>
cc:	Marc Zyngier <marc.zyngier@....com>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	Yijing Wang <wangyijing@...wei.com>
Subject: Re: [patch 08/16] genirq: Introduce callback
 irq_chip.irq_write_msi_msg

On Wed, 10 Dec 2014, Yun Wu (Abel) wrote:
> On 2014/11/19 19:11, Thomas Gleixner wrote:
> I spent last two weeks implementing and testing my original idea about making
> the sub domains generic, based on stacked domain feature. Now it comes real,
> please see the attached patch.

Can you please send patches inline? Attached is a pain to reply to.
 
> With this patch applied, I think things will get easier.

I don't see what gets easier. It's just another infrastructure which
is painfully similar to MSI.

> This patch (also with several other patches) is tested on Hisilicon ARM64 SoC,
> with non PCI devices capable of message based interrupts. The PCI part is not
> tested because it needs large refactoring work to do. So yes, the testing work
> is not sufficient, but I think the patch is enough to present what I really
> wanted to express. :)

Not really.

If you provide proper patches which make use of it and most important
a proper refactoring of the PCI/MSI side then we can discuss that, but
for now it's just handwaving.

Thanks,

	tglx





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