linux-kernel - Re: [PATCH v2] xen: add support for MSI message groups

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Date:	Thu, 27 Feb 2014 13:45:32 -0500
From:	Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:	Roger Pau Monne <roger.pau@...rix.com>
CC:	xen-devel@...ts.xen.org, linux-kernel@...r.kernel.org,
	David Vrabel <david.vrabel@...rix.com>
Subject: Re: [PATCH v2] xen: add support for MSI message groups

On 02/27/2014 01:15 PM, Roger Pau Monne wrote:
> Add support for MSI message groups for Xen Dom0 using the
> MAP_PIRQ_TYPE_MULTI_MSI pirq map type.
>
> In order to keep track of which pirq is the first one in the group all
> pirqs in the MSI group except for the first one have the newly
> introduced PIRQ_MSI_GROUP flag set. This prevents calling
> PHYSDEVOP_unmap_pirq on them, since the unmap must be done with the
> first pirq in the group.

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>


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