From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH v6 01/18] iommu/dma: Allow MSI-only cookies
Date: Fri, 6 Jan 2017 11:59:45 +0100
Message-ID: <20170106105945.GK17255@8bytes.org>
References: <1483643086-2883-1-git-send-email-eric.auger@redhat.com>
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To: Eric Auger <eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
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On Thu, Jan 05, 2017 at 07:04:29PM +0000, Eric Auger wrote:
>  struct iommu_dma_cookie {
> -	struct iova_domain	iovad;
> -	struct list_head	msi_page_list;
> -	spinlock_t		msi_lock;
> +	union {
> +		struct iova_domain	iovad;
> +		dma_addr_t		msi_iova;
> +	};
> +	struct list_head		msi_page_list;
> +	spinlock_t			msi_lock;
> +	enum iommu_dma_cookie_type	type;

Please move the type to the beginning of the struct and add a comment
how the type relates to the union.



	Joerg