linux-kernel - Re: [PATCH 0/4] AHCI: Conserve interrupts with pci_enable_msi_block

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Message-ID: <20130904145743.GC25788@mtj.dyndns.org>
Date:	Wed, 4 Sep 2013 10:57:43 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Alexander Gordeev <agordeev@...hat.com>
Cc:	linux-kernel@...r.kernel.org, x86@...nel.org,
	linux-pci@...r.kernel.org, linux-ide@...r.kernel.org,
	Ingo Molnar <mingo@...nel.org>, Joerg Roedel <joro@...tes.org>,
	Jan Beulich <JBeulich@...e.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH 0/4] AHCI: Conserve interrupts with
 pci_enable_msi_block_part() interface

Hello,

On Wed, Sep 04, 2013 at 02:32:39PM +0200, Alexander Gordeev wrote:
> Hmm.. that is actually a great idea. What I am not sure about whether is
> a dummy port still can send (spurious?) interrupts? The hardware interrupt
> handler would have to be reworked then. Seems as a yet another topic to me ;)

Only unimplemented ports are assigned to be dummies and it's highly
unlikely that they'll generate spurious interrupts.  That said, I
think it'd be a good idea to be ready for that if that doesn't add too
much complexity / overhead.

Thanks.

-- 
tejun
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