linux-kernel - Re: [PATCH v2 4/6] AHCI: Conserve interrupts with pci_enable_msi_block

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Message-ID: <20130905131050.GB26314@htj.dyndns.org>
Date:	Thu, 5 Sep 2013 09:10:50 -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 v2 4/6] AHCI: Conserve interrupts with
 pci_enable_msi_block_part() interface

Hello,

On Thu, Sep 05, 2013 at 02:53:47PM +0200, Alexander Gordeev wrote:
> Make use of the new pci_enable_msi_block_part() interface
> and conserve on othewise wasted interrupt resources for 10
> of 16 unused MSI vectors on Intel chipsets.
> 
> Signed-off-by: Alexander Gordeev <agordeev@...hat.com>

 Acked-by: Tejun Heo <tj@...nel.org>

One more question tho.  How much does saving some interrupt vectors
matter?  Are int vectors contrained resource on some configurations?

Thanks.

-- 
tejun
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