linux-kernel - Re: [PATCH 05/24] xen/arm: empty implementation of grant

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Message-ID: <20120801141624.GD7227@phenom.dumpdata.com>
Date:	Wed, 1 Aug 2012 10:16:24 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc:	linux-kernel@...r.kernel.org, xen-devel@...ts.xensource.com,
	Ian.Campbell@...rix.com, tim@....org,
	linux-arm-kernel@...ts.infradead.org, linaro-dev@...ts.linaro.org,
	catalin.marinas@....com, arnd@...db.de
Subject: Re: [PATCH 05/24] xen/arm: empty implementation of grant_table arch
 specific functions

On Thu, Jul 26, 2012 at 04:33:47PM +0100, Stefano Stabellini wrote:
> Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
> ---
>  arch/arm/xen/Makefile      |    2 +-
>  arch/arm/xen/grant-table.c |   53 ++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 54 insertions(+), 1 deletions(-)
>  create mode 100644 arch/arm/xen/grant-table.c
> 
> diff --git a/arch/arm/xen/Makefile b/arch/arm/xen/Makefile
> index b9d6acc..4384103 100644
> --- a/arch/arm/xen/Makefile
> +++ b/arch/arm/xen/Makefile
> @@ -1 +1 @@
> -obj-y		:= enlighten.o hypercall.o
> +obj-y		:= enlighten.o hypercall.o grant-table.o
> diff --git a/arch/arm/xen/grant-table.c b/arch/arm/xen/grant-table.c
> new file mode 100644
> index 0000000..0a4ee80
> --- /dev/null
> +++ b/arch/arm/xen/grant-table.c
> @@ -0,0 +1,53 @@
> +/******************************************************************************
> + * grant_table.c
> + * ARM specific part
> + *
> + * Granting foreign access to our memory reservation.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License version 2
> + * as published by the Free Software Foundation; or, when distributed
> + * separately from the Linux kernel or incorporated into other
> + * software packages, subject to the following license:
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a copy
> + * of this source file (the "Software"), to deal in the Software without
> + * restriction, including without limitation the rights to use, copy, modify,
> + * merge, publish, distribute, sublicense, and/or sell copies of the Software,
> + * and to permit persons to whom the Software is furnished to do so, subject to
> + * the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
> + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> + * IN THE SOFTWARE.
> + */
> +
> +#include <xen/interface/xen.h>
> +#include <xen/page.h>
> +#include <xen/grant_table.h>
> +
> +int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
> +			   unsigned long max_nr_gframes,
> +			   void **__shared)
> +{
> +	return -1;

-ENOSYS
> +}
> +
> +void arch_gnttab_unmap(void *shared, unsigned long nr_gframes)
> +{
> +	return;
> +}
> +
> +int arch_gnttab_map_status(uint64_t *frames, unsigned long nr_gframes,
> +			   unsigned long max_nr_gframes,
> +			   grant_status_t **__shared)
> +{
> +	return -1;

Same here -ENOSYS
> +}
> -- 
> 1.7.2.5
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