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

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Message-ID: <530F32C6.5060901@citrix.com>
Date:	Thu, 27 Feb 2014 12:42:46 +0000
From:	David Vrabel <david.vrabel@...rix.com>
To:	Roger Pau Monne <roger.pau@...rix.com>
CC:	<xen-devel@...ts.xen.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [Xen-devel] [PATCH] xen: add support for MSI message groups

On 26/02/14 16:24, 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: David Vrabel <david.vrabel@...rix.com>

David
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