linux-kernel - Re: [PATCH 1/2] iommu/amd: Add align parameter to alloc_irq

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Message-ID: <alpine.DEB.2.20.1710081038320.1922@nanos>
Date:   Sun, 8 Oct 2017 10:39:32 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Joerg Roedel <joro@...tes.org>
cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH 1/2] iommu/amd: Add align parameter to
 alloc_irq_index()

On Fri, 6 Oct 2017, Joerg Roedel wrote:

> From: Joerg Roedel <jroedel@...e.de>
> 
> For multi-MSI IRQ ranges the IRQ index needs to be aligned
> to the power-of-two of the requested IRQ count. Extend the
> alloc_irq_index() function to allow such an allocation.
> 
> Reported-by: Thomas Gleixner <tglx@...utronix.de>
> Fixes: 2b324506341cb ('iommu/amd: Add routines to manage irq remapping tables')
> Signed-off-by: Joerg Roedel <jroedel@...e.de>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>