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Message-ID: <alpine.DEB.2.02.1602081142360.27008@kaball.uk.xensource.com>
Date:	Mon, 8 Feb 2016 11:43:27 +0000
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Shannon Zhao <zhaoshenglong@...wei.com>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<ard.biesheuvel@...aro.org>, <stefano.stabellini@...rix.com>,
	<david.vrabel@...rix.com>, <catalin.marinas@....com>,
	<will.deacon@....com>, <mark.rutland@....com>,
	<julien.grall@...rix.com>, <xen-devel@...ts.xen.org>,
	<devicetree@...r.kernel.org>, <linux-efi@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <ian.campbell@...rix.com>,
	<shannon.zhao@...aro.org>, <peter.huangpeng@...wei.com>
Subject: Re: [PATCH v4 05/17] xen: memory : Add new XENMAPSPACE type
 XENMAPSPACE_dev_mmio

On Fri, 5 Feb 2016, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@...aro.org>
> 
> Add a new type of Xen map space for Dom0 to map device's MMIO region.
> 
> Signed-off-by: Shannon Zhao <shannon.zhao@...aro.org>
> ---
>  include/xen/interface/memory.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/xen/interface/memory.h b/include/xen/interface/memory.h
> index 2ecfe4f..9aa8988 100644
> --- a/include/xen/interface/memory.h
> +++ b/include/xen/interface/memory.h
> @@ -160,6 +160,7 @@ DEFINE_GUEST_HANDLE_STRUCT(xen_machphys_mapping_t);
>  #define XENMAPSPACE_gmfn_foreign 4 /* GMFN from another dom,
>  				    * XENMEM_add_to_physmap_range only.
>  				    */
> +#define XENMAPSPACE_dev_mmio     5 /* device mmio region */
>  
>  /*
>   * Sets the GPFN at which a particular page appears in the specified guest's

This patch needs to wait at least until the corresponding Xen patch
(the one which introduces XENMAPSPACE_dev_mmio on the Xen side) is
Acked by one of the Xen maintainers.

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